Organic Agroforestry Long-Term Field Experiment Designing Trough Actors’ Knowledge towards Food System Sustainability

: The implementation of agroecology principles within organic farming research is a crux to redesign sustainable agri-food systems. To govern this transition, the local research demand should be addressed by direct engagement of all stakeholders in the research process. The ﬁrst step is the involvement of farmers and technicians, with the aim of restoring their decision-making role, switching governance to local scale. The co-design/co-management of Long-Term Experiments (LTEs) can be crucial to govern the above-described transition through networking and participatory activities. In this study, we report the experience of co-designing a new LTE in Southern Italy by local actors and scientists. Through a participatory action research methodology, an LTE was considered as a biophysical component of an agroecological living lab, a public–private environment aimed to design a local food system. The setup of parallel ﬁeld trials in satellite farms stands for the other biophysical component, whereas the stakeholder platform represents the social one. Through deﬁnition of common objectives, a step-by-step process is presented, which highlights the interest of local organic actors to share ideas and perspectives for the territory, pointing out the inclusion of end-users (the consumers) in the process to complete the transition to sustainable food systems.


Introduction
Many authors have pointed out that the modern food systems are not sustainable from economic, social, and environmental perspectives [1][2][3][4]. Moreover, the COVID-19 crisis put in evidence all points of weakness of food systems at once: breakdown of supply chains, risks for workers, more hunger and malnutrition, and other problems from production through distribution to consumption [5]. As argued by some authors [6,7], it is the time to design and set up food systems more at the service of the right to food (food sovereignty), enhancing territoriality and control at the local level and aiming to reduce ecosystems degradation. However, the identification and implementation of more In this paper, we report the experience of the AgroforSyLL (AGROFORestry SYstem Living Lab) setup initiative, carried out in Basilicata region (Southern Italy), through the involvement of farmers and other stakeholders following participatory research methods. We identified a framework based on two lines of redesign: (i) movement/governance scale, promoting farmers' decision-making power; and (ii) practice scale, co-projecting diversified sustainable agroforestry systems. The present work aimed at developing and activating a virtuous path of food-system redesign based on the continuous interaction and circular feedback-loop between a platform of organic actors and a multidisciplinary network of scientists. The general aim was to share goals and perspectives on a local scale, identifying solutions suitable for the territory.

Materials and Methods
A co-innovation process was implemented to activate the ALL and set up the LTE embedded with the actual research needs of the area in which the LTE is located, following the three phases described by Ciaccia et al. [14]: (1) identification both of the cultural broker and the network of actors (actor platform-AP); (2) definition of the objectives of common interest for researchers and AP to co-design the LTE; and (3) definition of the LTE layout and setting of parallel trials at satellite farms (the ALL definition). The activities started in 2019 and are still ongoing.
The described process was discussed and implemented at the experimental farm "Campo 7" of the Council for Agricultural Research and Economics (CREA), located in Metaponto (MT), Southern Italy (lat 40 • 24 N; long 16 • 48 E and 8 m a.s.l.). The experimental farm is involved in organic and sustainable agriculture research for over 20 years; moreover, it is included in the Italian network of organic long-term experiments [19].

The Local Context
The Metaponto plain area-with a utilized agricultural area (UAA) of about 75,000 hais one of the most relevant productive area of the Basilicata region, particularly for vegetable production (mainly leafy vegetables, Cucurbitaceae and Brassicaceae). The area is also an important hub of strawberry and other fruit productions (e.g., apricot and orange). Organic production with 103,234 ha and 516 operators represents more than 20% of the total UAA in the Basilicata Region and about the 6% of the total producers are organic, with an increase of more than 2% and 3% in the 2018/2019 period, respectively, in line with the national trend of +2% for both organic area and operators in the same time span [21]. Organic farmers of the area, particularly small holders, are open to exchange opinions and solutions in participatory activities aimed at (i) meeting the growing demand for local products and (ii) getting an appropriate price for their products, considering production costs, and ensuring profit [14]. Diversification strategies (e.g., intercropping and agroforestry) are often considered as a valuable option to pursue both these final goals. In this context, CREA was interested in setting up a new LTE aimed at facing the research priorities for local organic farmers on vegetable production.
The climate of the Metaponto plain is classified as "accentuated thermomediterranean" according to the UNESCO-FAO classification [22], with mean monthly temperatures of 8.8 • C in the winter and 24.4 • C in the summer. The site is characterized by winter temperatures which can fall below 0 • C, and summer temperatures which can rise above 40 • C. Rainfall (average 490 mm year −1 ) is unevenly distributed during the year and concentrated mainly in the winter months. The annual potential evaporation rate is high with a mean annual pan evaporation rate of 1549 mm. In the last two decades, the area has been affected by the increased recurrence of flooding events during the rainy period (e.g., autumn), due to natural factors (soil characteristics), climate changes, and human activity [23]. In this climate change context, the research activities carried out in the last decade at the experimental farm focused on the assessment of the suitability of a set of agroecological techniques (e.g., soil hydraulic arrangement, crop rotations, agroecological service crops (ASCs) and their termination methods, and composting and organic fertilization) as poten-tial adaptation strategies for organic agroecosystems in Mediterranean environment [24,25]. The soil of the experimental farm is classified as a Typic Epiaquert [26]. It has a clay loam texture (60 and 36% of the clay and silt, respectively) with a soil bulk density of 1350 kg m −3 , and it contains 1.0 and 19.0 g kg −1 of N and organic matter, respectively.

The AgroforSyLL Experience
Actions to move towards sustainability along a transformative pathway are managed according to a long-range, cyclical, self-correcting mechanism, following a simple fourstep model (plan, act, observe, and reflect, according to the Action Research Spiral [27]), for maintaining and enhancing the effectiveness of the results through self-analysis and self-renewal [28] (Figure 1). In other words, the pathways to transition are not set at the beginning and tested out and, hopefully, released as in a top-down approach, but, on the contrary, through participation, dialogue, and validation. To this end, a common direction is chosen by the confluence of different wills and interests. a mean annual pan evaporation rate of 1549 mm. In the last two decades, the area has been affected by the increased recurrence of flooding events during the rainy period (e.g., autumn), due to natural factors (soil characteristics), climate changes, and human activity [23]. In this climate change context, the research activities carried out in the last decade at the experimental farm focused on the assessment of the suitability of a set of agroecological techniques (e.g., soil hydraulic arrangement, crop rotations, agroecological service crops (ASCs) and their termination methods, and composting and organic fertilization) as potential adaptation strategies for organic agroecosystems in Mediterranean environment [24,25]. The soil of the experimental farm is classified as a Typic Epiaquert [26]. It has a clay loam texture (60 and 36% of the clay and silt, respectively) with a soil bulk density of 1350 kg m −3 , and it contains 1.0 and 19.0 g kg −1 of N and organic matter, respectively.

The AgroforSyLL Experience
Actions to move towards sustainability along a transformative pathway are managed according to a long-range, cyclical, self-correcting mechanism, following a simple fourstep model (plan, act, observe, and reflect, according to the Action Research Spiral [27]), for maintaining and enhancing the effectiveness of the results through self-analysis and self-renewal [28] (Figure 1). In other words, the pathways to transition are not set at the beginning and tested out and, hopefully, released as in a top-down approach, but, on the contrary, through participation, dialogue, and validation. To this end, a common direction is chosen by the confluence of different wills and interests. A Participatory Action Research (PAR) methodological approach was used to collaborate with the local communities to reach a clear understanding of the role, assets and skills of researchers and other actors throughout the process of definition of a new LTE as ALL [14,20,29,30]. The ultimate goal was to create a research infrastructure (the ALL) embedded with the actual needs of agriculture in the Metaponto plain area. To do it, the degree of local actors' involvement in the formulation of the overall activity goals and in specific research topics for the LTE setup was decided, considering an evolution of their role and modes of interacting over time [10,14].
The three steps followed in the research process and the degree of participation are summarized in Figure 2. ALL [14,20,29,30]. The ultimate goal was to create a research infrastructure (the ALL) embedded with the actual needs of agriculture in the Metaponto plain area. To do it, the degree of local actors' involvement in the formulation of the overall activity goals and in specific research topics for the LTE setup was decided, considering an evolution of their role and modes of interacting over time [10,14].
The three steps followed in the research process and the degree of participation are summarized in Figure 2. Functions of facilitation by expert stakeholders are crucial. The role of some actors (e.g., farmers, technicians, associations) as intermediary is recognized, indeed, to be a key aspect to support innovation processes, which progressively moved from a linear, topdown model to a network-based, bottom-up and systemic approach [31]. The identification of a cultural broker (i.e., the person who facilitates connection among groups of people of different cultural backgrounds [32]) is the first step for the definition of an Actor Platform (AP) and its objectives. The Agenzia Lucana di Sviluppo e di Innovazione in Agricoltura (ALSIA), a public institution working for support and innovation in agriculture, was identified at the beginning of the process as the cultural broker for its active role at the local level in researcher-local actor communication. ALSIA was asked to pinpoint local organic actors classifying them in accordance with (i) their potential interest in collaborating with a public research institute and (ii) their role as opinion leader in the area. ALSIA was asked to assign a value (1-10 scale) to potential participants; actors with a mean value higher than 6 were selected. Participation and active role at previous activities were also used for the identification of the local actors.
Besides the AP, a Research Platform (RP) was identified and composed by scientists interested in collaborating in the co-research and co-innovation process. Scientists were selected on the basis of previous collaborations with the experimental farm and to guar- Functions of facilitation by expert stakeholders are crucial. The role of some actors (e.g., farmers, technicians, associations) as intermediary is recognized, indeed, to be a key aspect to support innovation processes, which progressively moved from a linear, topdown model to a network-based, bottom-up and systemic approach [31]. The identification of a cultural broker (i.e., the person who facilitates connection among groups of people of different cultural backgrounds [32]) is the first step for the definition of an Actor Platform (AP) and its objectives. The Agenzia Lucana di Sviluppo e di Innovazione in Agricoltura (ALSIA), a public institution working for support and innovation in agriculture, was identified at the beginning of the process as the cultural broker for its active role at the local level in researcher-local actor communication. ALSIA was asked to pinpoint local organic actors classifying them in accordance with (i) their potential interest in collaborating with a public research institute and (ii) their role as opinion leader in the area. ALSIA was asked to assign a value (1-10 scale) to potential participants; actors with a mean value higher than 6 were selected. Participation and active role at previous activities were also used for the identification of the local actors.
Besides the AP, a Research Platform (RP) was identified and composed by scientists interested in collaborating in the co-research and co-innovation process. Scientists were selected on the basis of previous collaborations with the experimental farm and to guarantee multidisciplinary to the process. The AP and the RP jointly represented the Stakeholder Platform (SP). The SP must be dynamic, allowing new stakeholders to join the network. A research survey was carried out to select the potential and broad research topics to be implemented in the new LTE and to be used to define research objectives of the ALL in phase 2. Each scientist of the RP was asked to identify a set of broad topics to be investigated in the studied areas, defining (i) the importance at the local scale, (ii) the relevance at the farm scale, and (iii) a feasibility analysis (in terms of digital/physical infrastructure needed, costs and time for their implementation, human works, and operative limits). Through a synthesis analysis of collected results, a selection of the main topics relevant for the Metaponto plain was identified and used as the starting point for the discussion with the AP.

Phase 2: Research Demand and Main Criteria for LTE Setup
In phase 2, a modified "participation by consultation" approach was followed [33], in which the AP was consulted with a questionnaire and iteratively by face-to-face meetings. The actors selected in phase 1 were invited to attend a first face-to-face meeting as the Sustainability 2021, 13, 5532 6 of 17 AP and a part of them (hereafter reported as "Panel") agreed also to participate in the questionnaire. Both the questionnaire and the first face-to-face meeting contributed to identify the research demand and the consequent objectives to be implemented in the ALL, starting from the broad topics selected through the research survey in phase 1.
The questionnaire, based on previous experiences in Italy [14,34] and on the main research topics identified by RP in the previous phase, was composed by 20 questions, including six open-ended and 14 closed-ended questions, the questionnaire was aimed to identify (i) the actor profile, (ii) the interest on the main topics and additional research demand for the local area, (iii) the personal visions about participatory research and previous experiences, and (iv) the willingness to join participatory activities. Five out six open-ended questions were nominal-polytomous questions [35], with five to seven unordered options and an open section in which it was asked to justify the previous choice and/or add additional options [34]. The 14 closed-ended questions were simply nominal-polytomous.
Since the organization of the first face-to-face meeting in May 2019 at the Metaponto experimental farm, actors were invited to join activities and discussions. Through an active listening approach, a communication technique in which the researcher verifies with the actors to ensure a correct and accurate understanding [36], the objectives of the meeting and the participants' research needs were discussed and deepened. The meeting has been devised to provide an active and safe space for collaboration: with more and less formal slot (e.g., proper meeting and farm visit) and breaking up in small groups to allow every participant to carve out comfortable way to contribute (i.e., Crowd Wise engagement method [37]), to then rearrange and recompose the input collected in a plenary session where contributions were debated, prioritized, and validated by the whole group.
Questionnaire results and workshop outputs were analyzed, and the synthesis with the selected topics to drive the LTE co-design was shared and discussed with the AP in a subsequent face-to-face meeting in October 2019 in the same site. Ideas, point of views, and suggestions were collected through a Crowd Wise workshop and used for the formulation of the new LTE implementing most of the research demands risen during this phase 2.

Phase 3: Agroecological Living Lab Definition
The last phase is characterized by a deepen interaction with the local actors through the organization of cyclical meetings with the AP, farm visits and direct researchers-local actors' communication. In this phase is crucial the direct interaction of the researchers with the cultural broker (ALSIA), to correct and fine tune the process of actors' involvement in the different activities.
Through the cultural broker, farm visit tours were organized in July 2020 and September 2020, to deepen the priorities of research raised during phase 2 and promote the participatory activity to enlarge the network.
Finally, this phase foresees the discussion with the AP of the LTE proposal drawn through the information and suggestions collected in phase 2.

Stakeholder Platform Composition and Research Survey
At the end of the phase 1 the SP was composed, through the selection of both AP and RP. ALSIA identified 44 potential actors and, by the stakeholder analysis, 22 of them were extracted and accepted to join the next activities as the AP. They were representative actors of the local area (i.e., farmers, technicians, advisors, and trade associations) and were engaged in the process, aiming to identify the research demand to be implemented. The RP was instead composed by nine scientists from CREA, covering different disciplines (agronomy, ecology, soil biology, and chemistry) and competences (i.e., agroecological practices, sustainability assessment, horticulture, carbon modeling, functional biodiversity, waste recycling, and participatory research), thus guaranteeing a multidisciplinary approach to the poll.
Through the research survey, the poll identified four main broad topics to be investigated and discussed with local actors, namely (i) soil organic matter conservation/restoration (67% of the poll indicated it as a priority to be investigated), (ii) climate change mitigation and adaptation (56%), iii) diversification strategies for agroecosystems (56%), and (iv) water-use optimization (22%). For each topic, 5-7 subtopics were identified and included in the questionnaire shared in phase 2 with the selected panel within the AP and then discussed with the whole AP. The composition of the panel, the AP, and the RP composing the stakeholder platform are reported in Table 1, and the interactions are summarized in Figure 2. Other two Scientists joint the RP after the second meeting in 2020. 2 More than one option available to respondent.

Questionnaire Analysis
Main results of the questionnaire are reported in Figure 3 (interest to the main topics) and Figure 4 (vision about participatory activities). The panel recognized the overriding interest in the following: (i) the use of cover crops and soil amendments (69%), the composting at the farm scale, and the waste recycling strategies (69% and 56%, respectively) for soil organic matter conservation ( Figure 3a); (ii) the use of perennial crops (69%), hydraulic arrangements (56%), and minimum tillage (44%) as climate-change mitigation strategies ( Figure 3b); (iii) the valorization of local varieties/landraces (81%), the implementation of hedgerows and other ecological infrastructures (60%), and the use of cover crops (53%) as diversification strategies ( Figure 3c); (iv) the use of intercropping (40%), soil arrangements (40%) and the use of automatization of management (33%) for water use optimization (Figure 3d).
Individual vision and perceptions of the panel pointed out the participatory research as an opportunity (Figure 4a) to increase own knowledge on specific topics (75%), to share own competence with other actors (50%) and to connect local needs with research priorities (50%). About expectations (Figure 4b), the panel identified participatory activities to set up a peer-to-peer experimental activity and data analysis (75%), to obtain a more democratic research aimed to transdisciplinary goals (50%) and to valorize farmers' knowledge (50%). The panel considered the implementation of participatory research as positively impacting on ( Figure 4c) the promotion of sustainable practices (88%), the revaluation of farmers' role in research (31%) and the isolation often characterizing farmers' activity (25%). Finally, the panel recognized the lack of incentives to farmers (53%), the lack of common researchfarmer/technicians' language (31%) and the lack of time (31%) as the main constraints for the implementation of research activities (Figure 4d). crops (53%) as diversification strategies ( Figure 3c); (iv) the use of intercropping (40%), soil arrangements (40%) and the use of automatization of management (33%) for water use optimization (Figure 3d). Individual vision and perceptions of the panel pointed out the participatory research as an opportunity (Figure 4a) to increase own knowledge on specific topics (75%), to share own competence with other actors (50%) and to connect local needs with research priorities (50%). About expectations (Figure 4b), the panel identified participatory activities to set up a peer-to-peer experimental activity and data analysis (75%), to obtain a more democratic research aimed to transdisciplinary goals (50%) and to valorize farmers' knowledge (50%). The panel considered the implementation of participatory research as positively impacting on ( Figure 4c) the promotion of sustainable practices (88%), the revaluation of farmers' role in research (31%) and the isolation often characterizing farmers' activity (25%). Finally, the panel recognized the lack of incentives to farmers (53%), the lack of common research-farmer/technicians' language (31%) and the lack of time (31%) as the main constraints for the implementation of research activities (Figure 4d).

Workshop and Open Discussion Output
During the first face-to-face meeting, the questionnaire results were discussed and validated. The AP confirmed the interest on the selected topics and the priorities pointed out by the panel, highlighting the crucial need to design a diversified rotation for the success of environmentally and economically sustainable organic vegetable systems. Further-

Workshop and Open Discussion Output
During the first face-to-face meeting, the questionnaire results were discussed and validated. The AP confirmed the interest on the selected topics and the priorities pointed out by the panel, highlighting the crucial need to design a diversified rotation for the success of environmentally and economically sustainable organic vegetable systems. Furthermore, intercropping among vegetables and with perennial crops was recognized as an important strategy for both soil organic matter conservation and climate change mitigation. Similarly, the use of cover crops in the rotation was identified as a tool for soil organic matter restoration and as diversification strategy. The AP recognized the central role of local varieties/landraces, as well as the cultivation of heterogeneous materials (i.e., genetically diverse plant individuals of the same crop species obtained by the Evolutionary Plant Breeding Program based on the combined effect of natural and artificial selection acting on heterogeneous populations [38]) as an opportunity for adaptation to climate change, wateruse optimization, tolerance to pest diseases, and as economically relevant diversification practice. The AP underlined how all the proposed and discussed re-design practices might be associated to a parallel analysis of the opportunity offered by the market, analysing alternative to short-chain and carrying out research activities able to upscale from the farm context. Therefore, the AP identified the consumer awareness and education as additional main topic and expressed the need to enlarge the platform encompassing economic competences.

Second Face-to-Face Meeting and Criteria Selection
According to the action research spiral, based on the results collected from the panel and the AP, the following topics were selected to drive the LTE co-design: (i) soil and hydraulic arrangements; (ii) cover crop, soil amendment, and composting implementation; (iii) introduction of fruit tree crops as redesign strategy in horticultural systems (agroforestry); (iv) diversification practices of horticultural systems; (v) innovation on system management; (vi) open-pollinated and local vegetable varieties/landraces introduction; and (vii) simplified sustainable analysis of the proposed systems.
In the second face-to-face meeting, the AP was asked to give individual and collective opinions on some topics, in particular (a) interest on agroforestry system and suggested fruit crop species, (b) which diversification strategy besides introduction of perennial crops to be implemented, (c) which management strategy should have priority in research, (d) which local varieties should be rescued/used, and (e) any other overriding topic to be investigated. In addition, with the aim of facing the AP requests risen at the previous meeting, an expert on the field of agricultural economics was invited to the meeting and actively participated in open discussion, together with the other scientists of the RP involved in the process. The AP highlighted great interest in the introduction of fruit crops as diversification strategy in horticultural systems, suggesting the introduction of this component as alley crop within the field. The proposed fruit species and the main comments are reported in Table 2.
The AP showed interest for species with multiple production attitudes (fresh, dry, and/or processed products), preferring those typical of the area. Besides fruit crops, the introduction of agroecological infrastructures was recognized as one of the priority diversification strategy. In particular, the introduction of hedgerows projected considering both the ecological services provision and the potential recycling of pruning residues within farm boarder was discussed. Among management practices, on the one hand, the use of cover crops and intercropping was indicated as the most promising strategy for soil organic matter and water management; on the other hand, soil/hydraulic arrangements through ridge-furrow system were considered to support the introduction of perennial crops as adaptation strategy to climate change and flooding. The introduction of heterogeneous materials, as far as the use of local varieties, was extensively discussed, pointing out the relevance of their introduction and rescue to meet the growing demand of such products in local and gross distribution markets. Finally, the strategies for accessing the market and the identification of new opportunities for products derived from diversified systems (e.g., through market analysis) were carefully analyzed (data not reported). Table 2. Result of the second face-to-face meeting: perennial crops and the opportunities for the territory offered by their introduction. Interest in local varieties, answering to a growing demand of these products

Species
The crop is not widespread in the plains due to its high chilling requirement

Berry fruits
Interest in connecting their production with the distribution chain of strawberry In the area, strawberry is widespread also in rotation with vegetable crops

Officinal plants
Growing demand of dry products Presence of organic producers in the area X

The Biophysical Component: The LTE Proposal
The new LTE design was based on a hydraulic arrangement able to protect crops from flooding in the case of heavy rainfall events. It consisted in the realization of a bedding systems with channels separating the raised beds that are 24 m wide and 60 m long. The raised beds should be realized through ploughing, guaranteeing a difference of 0.5 m height between the center of the bed and channel, respectively. On each bed, a different vegetable production system should be implemented, for a total of three different systems repeated three times in a three-blocks layout ( Figure 5).
A perimetral 9 m-wide hedgerow should be planted to separate the new LTE from the surrounding environments external to experimental farm boarder. Internal hedgerows (4 m wide) were projected to separate the three blocks. Perimetral and internal hedgerows should differ in species composition to increase the diversification and ecosystem services provided, trying to limit the shading effect of introduced plants on the cropping systems. The three compared systems were based on a four-year vegetable rotation with introduction of Agroecological Service Crops (e.g., cover crops and living mulches), as well as local varieties/landraces, and each system should be divided into four 5 m-wide strips, corresponding to the four rotative years.
systems (e.g., through market analysis) were carefully analyzed (data not reported).

The Biophysical Component: The LTE Proposal
The new LTE design was based on a hydraulic arrangement able to protect crops from flooding in the case of heavy rainfall events. It consisted in the realization of a bedding systems with channels separating the raised beds that are 24 m wide and 60 m long. The raised beds should be realized through ploughing, guaranteeing a difference of 0.5 m height between the center of the bed and channel, respectively. On each bed, a different vegetable production system should be implemented, for a total of three different systems repeated three times in a three-blocks layout ( Figure 5). A perimetral 9 m-wide hedgerow should be planted to separate the new LTE from the surrounding environments external to experimental farm boarder. Internal hedgerows (4 m wide) were projected to separate the three blocks. Perimetral and internal hedgerows should differ in species composition to increase the diversification and ecosystem services provided, trying to limit the shading effect of introduced plants on the AF1 AF2 OR AF2 OR AF1 OR AF1 AF2

Perimetral hedgerow
Internal hedgerow Internal hedgerow The systems should be organized as follow: (i) AF1, a central alley of two rows of shrub/bush crops separating the four rotative area into two groups (Agroforestry System 1); (ii) AF2, a central alley of one row of fruit crop separating the four rotative area into two groups (Agroforestry System 2); and (iii) OR, organic rotation systems.
Once the introduction of Agroforestry systems raised as an option, the RP was enlarged to other CREA scientists with expertise on fruit-crop management, selection, and physiology, to identify the perennial crops suitable for the specific pedoclimatic conditions of the experimental area. Based on the AP suggestions (Table 2), different hypotheses were evaluated, considering both the risk of direct competition with the intercropped vegetables and the workload requested for crop management (compatibility with the vegetable crop rotation). The pros and the cons of the most suitable options were analyzed and discussed within the RP (Table 3). Table 3. Advantages and disadvantages of principal solutions for agroforestry systems in the LTE. Based on the farm visits, the following aspects were identified as priority research and considered for the LTE and parallel trials projecting (a) trees training system solutions and (b) fruit-processing techniques for organic systems. Finally, a list of international, national, and local varieties responding to the production needs risen during the visits was identified and shared with the AP during phase 3.

Discussion
Our participatory research experience has shown a strong interest of local actors in joining all the activities, expressing the will to find answers to their needs in terms of innovation and perspectives. In their study of perceived benefits of ecological intensification between scientists and farmers, Kleijn et al. [39] report a little interest of European farmers in ecological practices, generally preferring those ones that interfere little with normal farming operations. In contrast with this statement, the interviewed panel expressed the idea of participatory research as a tool to widely spread sustainable practices (Figure 4c), proposing use of perennials, intercropping, and soil/hydraulic arrangements as solutions for the discussed topics (Figure 3). This different outcome can be explained by the peculiar composition of our panel, made up only by actors of organic systems, generally characterized by high dynamism and aptitude to exchange experiences in participatory activities [14,40]. Regarding constraints limiting participatory research (Figure 4d), the lack of full support by institutions was the key one confirming the result of Delate et al. [34]. This limit is due to the lack of explicit demands request of on-farm trials within the grant requirements released by Italian funding agencies, despite the involvement of real farms and farmers being strongly promoted for research projects. The aspects related to opportunity costs for scientists and farmers were highly debated and should be considered, depending on the level of desired involvement and the final objectives of the co-research activities [41]. With the final goal to activate a system redesign process, the involvement of local actors should be high; by this, the final decision of the SP was to promote the participation also through the release of some incentives. Among them, the fruit crops provision to farms hosting the parallel trials, in accordance with a "participation for material incentives" approach was planned [32]. The "lack of time" cited together with "lack of common language" as the second most important constraint factor is strictly connected with the previous aspect of financing. Indeed, Hoffman et al. [41] underlines how opportunity costs should be respected if farmers dedicate time to research. The perceived "lack of common language" highlighted the difficulties in communication among different stakeholders, pointing out the role of facilitation in enabling conditions for collaborative learning [10].
Qualitative results obtained during face-to-face meetings showed interest and concerns about the introduction of perennial crops in vegetable systems. Interest was mainly related to the benefits derived by diversification of horticultural cropping systems, allowing (i) the production of more per unit area and more sustainably [18] and (ii) the reduction of the economic damage in the case of extreme climatic event like flooding [42]. Constraints were mainly related to work organization and competition between agricultural practices and between crops. For this reason, the AP pointed out alley system as the agroforestry system to be studied. This result confirms what reported by Camilli et al. [43] about the perception of stakeholders on agroforestry introduction effects, being generally positive on production and the environment, but negative on management.
The interviewees indicated the introduction in the rotation of ASCs and use of soil amendments (by composting and other waste-recycling strategies) as preferred practices for soil organic matter restoration and conservation (Figure 4a). They highlighted an interest in strategies able to maximize nutrient turnover within the farm border, in a circular dimension typical of closed-loops model [25,44]. Similarly, also the introduction of ecological infrastructures as hedgerows (Figure 4c) was considered in a functional perspective for on-farm recycling, since the AP pointed out the role of using their vegetable residues in composting processes (e.g., hedgerows' pruning residues) more than for related ecosystems and landscape benefits. This result is in line with the study of Fantappié et al. [45] on farmers' perception of soil conservation practices in Western Sicily. The panel and the AP put a strong interest in the introduction of local varieties/landraces (Figure 4c, both the face-to-face meetings), pointing out the bond of local actors with their own cultural heritage in contrast with crop uniformity of modern agriculture. This is a common aspect in the Italian agriculture, especially for small farms in Southern Italy and reflected by the large use and request by the population for locally adapted vegetable varieties [46,47]. The use of wide rotation was reported as basic diversification strategy, in accordance with previous studies [39].
Among the abovementioned (Table 3) fruit tree crops, the use of both traditional species, such as the fig and the persimmon, as well as alternative berry crops, represent an opportunity for farmers to significantly enlarge the ripening calendar, from mid-April (spring) until December (winter). Moreover, fig and berry productions allow the opportunity for growers to promote also dried and transformed productions. In the case of figs, it is important to highlight the diffusion of new pest diseases in Italy for the species [48]; therefore, the choice of the cultivars should consider local genotypes well adapted to the area. The new trends observed in the studied area for the training system need knowledge on the reproductive habitus of the species and represent a key factor to improve the harvest-season length and guarantee high fruit-qualitative standards [49]. For berry crops-for the red raspberry, in particular-the cultivars should be chosen among the primocane-fruiting group. These cultivars are well adapted for Mediterranean and coastal areas since they have a lower chilling requirement compared to the floricane cultivars [50]. The red raspberry primocane fruiting, moreover, can guarantee the possibility to obtain two productions, by using different training forms for a wide commercialization period.

Next Steps and AGROFORSYLL Perspectives
Due to the policies restricting people's movement during the pandemic and the need to rearrange activities on web-basis phase 3 is still ongoing.
To definitively confirm the LTE design and implement the proposed solutions in the experimental farm, a new meeting is going to be organized with the AP. Once the LTE proposal will have satisfied the stakeholder platform's ideas, needs and objectives, by the final acceptance of the design and implemented topics, new challenges, and new steps to be followed will raise. They might be mainly related to (i) LTE monitoring and management (e.g., local varieties/landraces to be tested in the proposed systems, relevant indicators selection, etc.); and (ii) actor platform empowerment and enlargement. LTE monitoring should then pursue and analyze the topic implemented, studying the compared system on agronomic, biochemical, and agronomic aspect, evaluating the solutions in the context of adaptation to climate changes. Moreover, with the aim to verify the sustainability of the analyzed systems, an ex post Multi-Criteria Analysis (MCA) will be implemented and adopted. The MCA will consider and evaluate, together, all three aspects of the sustainability (economic, environmental, and social), allowing us to analyze the consequences and the impact of many different conservation agriculture management strategies simultaneously and their synergistic approach on the systems.
The AP should be enlarged by inviting new actors selected by ALSIA and identified during the activities carried out during phase 2, finally defining the social dimension of the ALL. This improvement should be done following a higher gender balance in the AP, still not representative of the role of women in agriculture in the Basilicata Region (35% of farms and enterprise in agriculture are managed by women [51]) and due to a scarce participation in the activities carried out in previous experiences. Comments, suggested changes and point of views might be then integrated in an LTE co-design perspective. By face-to-face or web meeting, the willingness of AP farmers to set up parallel trials on the same topics will be discussed, starting a new process of re-definition of the satellite farms composing the agroecological living lab biophysical dimension [52]. The implementation of research topics in parallel field trials of the satellite farms (AP network) allows us to move from the field to farm scale and maximize the impact of the activities to a territorial/local one [19]. The LTE-satellite farms connection should be a valuable tool for bridging the gap between science and practice, satisfying both the needs of farmers and other value chains operators (more dynamic, interested to profits and market evolution), and researchers (more static, interested in slow-evolution processes) [39].
Finally, the already carried out workshops and open discussions raised the need of involved actors to upscale from the field and the farm contexts, finding in consumers and policy makers involvement the recognized strategy for an effective system redesign towards and agroecological territory definition, as reported by several authors [5,7,11,28]. Further activities should then encompass the engagement of these actors in the network, by the implementation of the correct methodology in the process [53]. Therefore, in this process, the three major domains for the agroecological transition take place, namely (i) adaptation of agricultural practices, (ii) conservation of biodiversity (including traditional cultivar valorization) and natural resources, and (iii) development of embedded food systems, so defining the ALL as an Agroecological Territory [54].