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Agronomy, Volume 10, Issue 3

March 2020 - 136 articles

Cover Story: High quality fruit production requires the regulation of the crop load on fruit trees by reducing the number of flowers and fruitlets early in the growing season, if the bearing is too high. In this article, the multi-view perspective from the Red–Green–Blue (RGB) colored dense point clouds retrieved from drone imagery are compared and evaluated against the field-based flower cluster number per tree. Experimental results obtained on a dataset of two pear tree orchards (N = 144) demonstrate that our 3D object-based method, a combination of pixel-based classification with the stochastic gradient boosting algorithm and density-based clustering (DBSCAN), significantly outperforms the state-of-the-art in flower cluster estimations from the 2D top-view (R2 = 0.53), with R2 > 0.7 and RRMSE < 15%. View this paper
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Articles (136)

  • Article
  • Open Access
59 Citations
9,030 Views
15 Pages

New Eco-Friendly Polymeric-Coated Urea Fertilizers Enhanced Crop Yield in Wheat

  • Ricardo Gil-Ortiz,
  • Miguel Ángel Naranjo,
  • Antonio Ruiz-Navarro,
  • Marcos Caballero-Molada,
  • Sergio Atares,
  • Carlos García and
  • Oscar Vicente

23 March 2020

Presently, there is a growing interest in developing new controlled-release fertilizers based on ecological raw materials. The present study aims to compare the efficacy of two new ureic-based controlled-release fertilizers formulated with water-solu...

  • Editorial
  • Open Access
13 Citations
7,617 Views
5 Pages

23 March 2020

A diverse set of molecular markers techniques have been developed over the last almost 40 years and used with success for breeding a number of major crops. These have been narrowed down to a few preferred DNA based marker types, and emphasis is now o...

  • Concept Paper
  • Open Access
15 Citations
6,719 Views
15 Pages

The ‘Palo a Pique’ Long-Term Research Platform: First 25 Years of a Crop–Livestock Experiment in Uruguay

  • Pablo Rovira,
  • Walter Ayala,
  • José Terra,
  • Fernando García-Préchac,
  • Paul Harris,
  • Michael R.F. Lee and
  • M. Jordana Rivero

23 March 2020

Mixed crop–livestock long-term experiments (LTE) are critical to increase the understanding of sustainability in complex agroecosystems. One example is the ‘Palo a Pique’ LTE which has been running for 25 years in Uruguay (from 1995...

  • Article
  • Open Access
32 Citations
7,637 Views
15 Pages

Spraying Agro-Industrial Compost Tea on Baby Spinach Crops: Evaluation of Yield, Plant Quality and Soil Health in Field Experiments

  • Margarita Ros,
  • María Hurtado-Navarro,
  • Almudena Giménez,
  • Juan Antonio Fernández,
  • Catalina Egea-Gilabert,
  • Pedro Lozano-Pastor and
  • José Antonio Pascual

23 March 2020

Compost tea is a liquid fraction extracted from composts, and it is of great interest in sustainable agriculture because it reduces the unsustainable use of chemical-based pesticides and fertilizers. In this study, during two spinach field cycles, we...

  • Article
  • Open Access
9 Citations
4,057 Views
19 Pages

High Sowing Densities in Rainfed Common Beans (Phaseolus vulgaris L.) in Mexican Semi-Arid Highlands under Future Climate Change

  • Alma Delia Baez-Gonzalez,
  • Ricardo Fajardo-Díaz,
  • Giovanni Garcia-Romero,
  • Esteban Osuna-Ceja,
  • James R. Kiniry and
  • Manyowa N. Meki

23 March 2020

Mexico holds the largest single bean production area in the world that is vulnerable to drought. Using field data and two future climate scenarios (RCP4.5 and RCP8.5) for the period 2020–2039, this study evaluated three common bean (Phaseolus v...

  • Review
  • Open Access
44 Citations
10,080 Views
13 Pages

Legume Biofortification and the Role of Plant Growth-Promoting Bacteria in a Sustainable Agricultural Era

  • Mariana Roriz,
  • Susana M. P. Carvalho,
  • Paula M. L. Castro and
  • Marta W. Vasconcelos

22 March 2020

World population growth, together with climate changes and increased hidden hunger, bring an urgent need for finding sustainable and eco-friendly agricultural approaches to improve crop yield and nutritional value. The existing methodologies for enha...

  • Article
  • Open Access
9 Citations
3,424 Views
9 Pages

21 March 2020

This study analyzes the effects that action 112 of the Rural Development Policy had on the socioeconomic status of Slovenian dairy farms. The data used in this paper were collected from Farm Accountancy Data Network (FADN), a database for applicants...

  • Article
  • Open Access
17 Citations
5,370 Views
14 Pages

Estimating the Protein Concentration in Rice Grain Using UAV Imagery Together with Agroclimatic Data

  • Akira Hama,
  • Kei Tanaka,
  • Atsushi Mochizuki,
  • Yasuo Tsuruoka and
  • Akihiko Kondoh

21 March 2020

Global warming and climate change can potentially change not only rice production but also rice nutrient content. To adapt a rice-dependent country’s farming to the impacts of climate change, it is necessary to assess and monitor the potential...

  • Article
  • Open Access
2 Citations
3,755 Views
17 Pages

Nitrogen Rate Increase Not Required for No-Till Wheat in Cool and Humid Conditions

  • Juan Manuel Herrera,
  • Christos Noulas,
  • Peter Stamp,
  • Lilia Levy-Häner,
  • Didier Pellet and
  • Ruijun Qin

21 March 2020

An increased nitrogen (N) supply was proposed to avoid grain yield (GY) reductions and successfully implement conservation agriculture (CA). We investigated interactions effects of tillage system and N supply on winter wheat (Triticum aestivum L.) at...

  • Review
  • Open Access
135 Citations
14,749 Views
27 Pages

Durum Wheat Breeding in the Mediterranean Region: Current Status and Future Prospects

  • Ioannis N. Xynias,
  • Ioannis Mylonas,
  • Evangelos G. Korpetis,
  • Elissavet Ninou,
  • Aphrodite Tsaballa,
  • Ilias D. Avdikos and
  • Athanasios G. Mavromatis

21 March 2020

This brief historical review focuses on durum wheat domestication and breeding in the Mediterranean region. Important milestones in durum wheat breeding programs across the countries of the Mediterranean basin before and after the Green Revolution ar...

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Agronomy - ISSN 2073-4395