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Agronomy, Volume 9, Issue 10

October 2019 - 100 articles

Cover Story: Unmanned Aircraft System (UAS) technology has allowed for a more integrated and optimized approach to various farming tasks such as field mapping, plant stress detection, biomass estimation, weed management, inventory counting, and chemical spraying, among others. These systems can be highly specialized depending on the particular goals of the researcher or farmer, yet many aspects of UAS are similar. All systems require an underlying platform—or unmanned aerial vehicle (UAV)—and one or more peripherals and sensing equipment such as imaging devices (RGB, multispectral, hyperspectral, near infra-red, RGB depth), gripping tools, or spraying equipment. Along with these wide-ranging peripherals and sensing equipment comes a great deal of data processing. Common tools to aid in this processing include vegetation indices, point clouds, machine learning models, and statistical methods. View this paper
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Articles (100)

  • Article
  • Open Access
44 Citations
8,377 Views
22 Pages

Retrieval of Evapotranspiration from Sentinel-2: Comparison of Vegetation Indices, Semi-Empirical Models and SNAP Biophysical Processor Approach

  • Nieves Pasqualotto,
  • Guido D’Urso,
  • Salvatore Falanga Bolognesi,
  • Oscar Rosario Belfiore,
  • Shari Van Wittenberghe,
  • Jesús Delegido,
  • Alejandro Pezzola,
  • Cristina Winschel and
  • José Moreno

22 October 2019

Remote sensing evapotranspiration estimation over agricultural areas is increasingly used for irrigation management during the crop growing cycle. Different methodologies based on remote sensing have emerged for the leaf area index (LAI) and the cano...

  • Article
  • Open Access
24 Citations
5,717 Views
14 Pages

22 October 2019

Sorghum and pearl millet are the most important stable crops in the drylands of West Africa. This four-year study based on two experiments assessed different low-cost methods for intensification of sorghum and millet production under contrasting rain...

  • Article
  • Open Access
10 Citations
6,325 Views
19 Pages

22 October 2019

The expected increase in population and the pressure posed by climate change on agricultural production require the assessment of future yield levels and the evaluation of the most suitable management options to minimize climate risk and promote sust...

  • Article
  • Open Access
5 Citations
6,147 Views
11 Pages

Identification of New Hosts of Pseudocercospora fijiensis Suggests Innovative Pest Management Programs for Black Sigatoka Disease in Banana Plantations

  • Roberto Vázquez-Euán,
  • Bartolomé Chi-Manzanero,
  • Ioreni Hernández-Velázquez,
  • Miguel Tzec-Simá,
  • Ignacio Islas-Flores,
  • Luciano Martínez-Bolaños,
  • Eduardo R. Garrido-Ramírez and
  • Blondy Canto-Canché

22 October 2019

Black Sigatoka is the main constraint to banana production worldwide, and epidemic outbreaks are continuously causing huge losses. Successful management of diseases requires a profound knowledge of the epidemiological factors that influence disease d...

  • Article
  • Open Access
12 Citations
3,634 Views
18 Pages

Lessons from Assessing Uncertainty in Agricultural Water Supply Estimation for Sustainable Rice Production

  • Jung-Hun Song,
  • Younggu Her,
  • Sang Min Jun,
  • Soonho Hwang,
  • Jihoon Park and
  • Moon-Seong Kang

21 October 2019

Agricultural water supply (AWS) estimation is one of the first and fundamental steps of developing agricultural management plans, and its accuracy must have substantial impacts on the following decision-making processes. In modeling the AWS for paddy...

  • Article
  • Open Access
13 Citations
3,723 Views
25 Pages

Functional Analysis of Three miRNAs in Agropyron mongolicum Keng under Drought Stress

  • Xuting Zhang,
  • Bobo Fan,
  • Zhuo Yu,
  • Lizhen Nie,
  • Yan Zhao,
  • Xiaoxia Yu,
  • Fengcheng Sun,
  • Xuefeng Lei and
  • Yanhong Ma

20 October 2019

Agropyron mongolicum Keng, a perennial diploid grass with high drought tolerance, belongs to the genus Agropyron, tribe Triticeae. It has made tremendous contributions toward reseeding natural pasture and seeding artificial grassland in China, especi...

  • Article
  • Open Access
28 Citations
4,787 Views
13 Pages

Effect of Different Water Salinity Levels on the Germination of Imazamox-Resistant and Sensitive Weedy Rice and Cultivated Rice

  • Silvia Fogliatto,
  • Francesca Serra,
  • Lorenzo Patrucco,
  • Marco Milan and
  • Francesco Vidotto

19 October 2019

Weeds that have become resistant to herbicides may threaten rice production. Rice cultivation is mainly carried out in coastal and river delta areas that often suffer salinity problems. The aims of this study were to evaluate the effects of salinity...

  • Article
  • Open Access
8 Citations
4,102 Views
17 Pages

19 October 2019

Humic substances (HS) are important soil components playing pivotal roles in guaranteeing long-term soil fertility. In this study, the chemical and biological properties of HS extracted from earthworm coprolites collected in soils subjected to differ...

  • Article
  • Open Access
11 Citations
4,658 Views
18 Pages

19 October 2019

A two-year greenhouse study was conducted to assess the effects of the application of I (as KIO3), Se (as Na2SeO3), and salicylic acid (SA) in nutrient solutions on the chemical composition of six lettuce cultivars, i.e., two butterhead lettuces (BUT...

  • Article
  • Open Access
22 Citations
6,534 Views
11 Pages

18 October 2019

Trichoderma asperellum, composted plant residues, and its combination can control vascular-streak dieback (VSD) disease caused by fungus Ceratobasidium theobromae in laboratory conditions. In this trial, we evaluated these treatments in two years thr...

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Agronomy - ISSN 2073-4395