Results 11 to 20 of about 685,091 (269)

Banco de sementes em cerrado sensu stricto sob queimada e sistemas de cultivo Seedbanks in cerrado sensu stricto under burning and cultivation system

open access: yesPesquisa Agropecuária Brasileira, 2008
O objetivo deste trabalho foi avaliar o efeito de queimada e de sistemas de cultivo sobre o banco de sementes em solo de Cerrado. Foi realizada amostragem em área sob cerrado sensu stricto queimada e não queimada, assim como em área de pastagem e lavoura
Fernanda Satie Ikeda   +3 more
doaj   +1 more source

The Spatiotemporal Distribution, Abundance, and Seasonal Dynamics of Cotton-Infesting Aphids in the Southern U.S.

open access: yesInsects, 2023
Cotton leafroll dwarf virus (CLRDV) is an emerging aphid-borne pathogen infecting cotton, Gossypium hirsutum L., in the southern United States (U.S.).
John W. Mahas   +17 more
doaj   +1 more source

Grassland and Cropland Net Ecosystem Production of the U.S. Great Plains: Regression Tree Model Development and Comparative Analysis

open access: yesRemote Sensing, 2016
This paper presents the methodology and results of two ecological-based net ecosystem production (NEP) regression tree models capable of up scaling measurements made at various flux tower sites throughout the U.S. Great Plains.
Bruce Wylie   +6 more
doaj   +1 more source

Research Status and Prospect on Height Estimation of Field Crop Using Near-Field Remote Sensing Technology

open access: yes智慧农业, 2021
Plant height is a key indicator to dynamically measure crop health and overall growth status, which is widely used to estimate the biological yield and final grain yield of crops.
ZHANG Jian   +3 more
doaj   +1 more source

Seasonal variation and its impacts in rice-growing regions of the Mekong Delta [PDF]

open access: yesInternational Journal of Climate Change Strategies and Management, 2021
Purpose – In recent years, agricultural activities in the Mekong Delta have frequently faced the potential risks of drought, saline intrusion and unusually heavy rainfall because of climate change, leading to a decline in crop yield.
Van Hong Nguyen, Hoang Phan Hai Yen
doaj   +1 more source

Supplemental Food Production With Plants: A Review of NASA Research

open access: yesFrontiers in Astronomy and Space Sciences, 2021
Bioregenerative life-support systems for space have been investigated for 60 years, and plants and other photosynthetic organisms are central to this concept for their ability to produce food and O2, remove CO2, and help recycle wastewater.
Christina M. Johnson   +9 more
doaj   +1 more source

Comparative effect of different insecticides on the growth and yield of soybeans

open access: yesPlant Protection Science, 2020
The yield of soybeans, an economically important crop worldwide, is substantially reduced by different abiotic and biotic factors, including insect pests. Different insecticides are applied to control soybean insect pests. The application of insecticides
Sanjeev Kumar Dhungana   +5 more
doaj   +1 more source

Automated greenhouse, instrumentation and fuzzy logic

open access: yesVisión Electrónica, 2020
Crops are vulnerable to climatic conditions; therefore, their quality may vary according to environmental behavior. Under optimal conditions the crop can have a good productive development and an increase in the yield per unit area, reducing the risks ...
Sergio Alejandro Vaca Vargas
doaj   +1 more source

Key role of China and its agriculture in global sustainable phosphorus management

open access: yesEnvironmental Research Letters, 2014
Growing global demand for food leads to increased pressure on phosphorus (P), a finite and dwindling resource. China is the largest producer and consumer of P fertilizer in the world.
S Z Sattari   +4 more
doaj   +1 more source

New records of heterostigmatic mites (Acari: Heterostimatina) from dry rice cultivation of Gorgan, northern Iran [PDF]

open access: yesJournal of Insect Biodiversity and Systematics, 2022
View on Scopus Gorgan, is a city in northern Iran where its moderate and humid climate and fertile soil provides an appropriate condition for various arthropods and crops.
Vahid Rahiminejad   +2 more
doaj  

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