Constraints and Balances among Soil Properties, Microorganisms, and Agronomic Techniques

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Soil and Plant Nutrition".

Deadline for manuscript submissions: closed (20 October 2023) | Viewed by 2510

Special Issue Editor


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Guest Editor
ICAR - Indian Agricultural Research Institute, New Delhi, India
Interests: precision agriculture; watershed management; water conservation and management; soil management; cropping systems; nutrient management; integrated crop management; conservation agriculture; system of crop intensification

Special Issue Information

Dear Colleagues,

Healthy soils are the key resource to the sustainability of life on Earth—be it plants, animals, or microflora and microfauna. The physical, chemical and biological properties of soil determine the capacity of the soil to function as a vital living system delivering many ecosystem services apart from producing food and raw materials. Microbes and plants exert a tremendous influence on soil functions; soils having active microbes and close interactions between fauna and plants augment efficient nutrient cycling, pathogen resistance and overall crop health, and enhance long-term ecosystem stability in addition to increasing food crop yield, nutritional quality and safety. However, fertile and high-quality soils are diminishing at an increasing rate. The physical degradation of soils through water and wind erosion, anthropogenic activities, loss of vegetation and biodiversity, floods, chemical degradation (e.g., acidification, alkalization, salinization), and the deterioration of soil microbiome are prominent issues related to soil, and need to be assessed and addressed with priority. Agronomic practices need to be designed and tailored in such way that potential productivity is harnessed and at the same time soil properties are improved or maintained. Agronomic practices like precision input management, conservation agriculture, crop diversification, resource conservation technologies, and organic production systems hold the promise of producing a sufficient yield while also improving soil conditions.  However, agronomic practices vary with soil conditions. Again, in order to solve these problems, soils will require different management practices. Enhancing the interplay of soil, water, microbes and plants could be the solution to low productivity, loss of soil health and unsustainable production systems.

The aim of this Special Issue is to improve our understanding of the complex mechanisms involved in the development of soil properties and their role in long-term productivity; depletion/disturbances in the vitality of soils and the effects of the interactions of micro- and macro-biome on the behavior of soils. The scope of this Special Issue covers the characterization of arable soils, including the physical, chemical and biological health of soils using conventional approaches, remote sensing and drone technologies, the deterioration of soil health and agronomic management (suitable crops, plant types, genotypes, tillage, land configurations, amendments, manures, fertilizers, microbial consortia, water management, crop-residues, etc.).

The acquisition of information enabling the assessment of soil and crop characteristics using sensors, IoT, spectroscopy, spectral characteristics, and thermal properties is of special interest. The modelling of soil and crop behaviors is another important area being addressed worldwide. Precision agriculture, conservation agriculture, smart farming, and energy-efficient production systems have a huge impact on soil and crop productivity, and have gained the attention of researchers.          

This Special Issue will include papers emerging from basic, applied and strategic research, case studies and reviews on the latest developments in the above areas.           

Dr. Anchal Dass
Guest Editor

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Keywords

  • soil properties
  • microbiomes
  • soil degradation
  • agronomic management
  • soil management
  • spectroscopy
  • sensors
  • IoT
  • soil–microbe–plant interactions

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Published Papers (1 paper)

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Research

18 pages, 3726 KiB  
Article
A Greener Approach to Spinach Farming: Drip Nutrigation with Biogas Slurry Digestate
by Rashmi Yadav, Susama Sudhishri, Manoj Khanna, Khajanchi Lal, Anchal Dass, Hari Lal Kushwaha, Kalikinkar Bandyopadhyay, Archna Suman, Anupama Singh, Rajiv Kumar Singh and Raj Singh
Agronomy 2024, 14(4), 681; https://doi.org/10.3390/agronomy14040681 - 27 Mar 2024
Cited by 2 | Viewed by 1907
Abstract
To achieve higher crop yields and maintain environmental conservation, it is imperative to adopt novel agricultural methods that improve both the quantity and quality of produce. The following study focused on investigating the effectiveness of integrated use of biogas slurry and inorganic nutrigation [...] Read more.
To achieve higher crop yields and maintain environmental conservation, it is imperative to adopt novel agricultural methods that improve both the quantity and quality of produce. The following study focused on investigating the effectiveness of integrated use of biogas slurry and inorganic nutrigation on spinach growth and nutrient uptake through drip irrigation. A field experiment was conducted using a split-plot design; spinach was cultivated with seven different treatments: biogas slurry nutrigation (BSN) (T1), integrated inorganic + organic nutrigation: 40% Recommended dose of fertilizer (RDF) + BSN (T2), 60% RDF + BSN (T3), 80% RDF + BSN (T4), 100% RDF (T5), slurry broadcasting (SB) (T6), and control (T7). The results showed that spinach grown with (T4) 80% RDF + BSN exhibited optimum plant height and leaf count compared to spinach under other treatments and was at par with T5 100% RDF for crop parameters. T5 treated plants demonstrated the longest roots, followed by T4 treated plants. The highest recorded yield of 5.72 tons ha−1 was achieved in treatment T5 with 100% RDF, followed closely by T4 with 80% RDF + BSN at 5.52 tons ha−1 and T3 with 60% RDF + BSN at 5.36 tons ha−1. These three treatments exhibited comparable yields, showcasing the effectiveness of incorporating biogas slurry nutrigation in conjunction with inorganic fertilizer for achieving high spinach yields. In terms of macronutrient content in spinach leaves, significant differences were found for nitrogen (N), phosphorus (P), and potassium (K) contents. Incorporating biogas slurry into the soil modified microbial enzyme activities, specifically dehydrogenase and phosphatase. Normally, alkaline phosphatase shows greater activity than acidic phosphatase, but the addition of biogas slurry equalized the enzymatic activity of both, establishing a harmonized enzymatic profile. Our results suggest that fertilizing spinach with integrated biogas slurry nutrigation (if properly filtered) + inorganic nutrigation through drip nutrigation is a viable strategy for improving the morphological parameters and productivity of spinach while also contributing to environmental preservation and a reduction in production costs. Full article
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