Results 141 to 150 of about 7,615,538 (400)

Evaluation of CERES‐Maize Model for Predicting Yield, Evapotranspiration, Water Productivity and Drought Stress Indices Under Center Pivot, Subsurface Drip and Furrow Irrigation Systems With Different Irrigation Levels Simultaneously

open access: yesIrrigation and Drainage, EarlyView.
ABSTRACT The effects of different irrigation methods (center pivot [CPI], subsurface drip [SDI] and furrow irrigation [FI]) and levels (full irrigation treatment [FIT], 80% FIT, 60% FIT and rainfed) on yield, crop evapotranspiration (ETc), ET‐water productivity (WPET) and drought stress index for leaf expansion (SIE) and photosynthesis (SIP) of maize ...
Ebrahim Amiri   +2 more
wiley   +1 more source

Research Progress [PDF]

open access: yes, 1963
Cooperating with the United States Department of AgricultureIntroduction -- Outlook -- History -- Facilities -- Organization -- Financing -- Report of progress -- Fertilizers -- Dairying -- Grazing -- Forages -- Irrigation -- Cereals -- Weed control ...

core  

Sustainable Weed Management for Conservation Agriculture: Options for Smallholder Farmers

open access: yesAgriculture, 2018
Land degradation and soil fertility deterioration are two of the main causes of agricultural production stagnation and decline in many parts of the world.
B. Sims   +5 more
semanticscholar   +1 more source

The effects of ongoing internal immigration enforcement on the US agricultural labor supply

open access: yesJournal of the Agricultural and Applied Economics Association, EarlyView.
Abstract We demonstrate that unexpected increases in enforcement have a temporary but costly impact on labor supply among noncitizen farmworkers. Analyzing Current Population Survey data and immigration‐related arrests, we find that unexpected increases in immigration arrests decrease labor force participation (LFP) among noncitizen farmworkers by up ...
Alejandro Gutiérrez‐Li   +1 more
wiley   +1 more source

Optimising woody-weed control [PDF]

open access: yes
Woody weeds pose significant threats to the 12.3 billion dollar Australian grazing industry. These weeds reduce stocking rate, increase mustering effort, and impede cattle access to waterways. Two major concerns of woody-weed management are the high cost
Cacho, Oscar J.   +2 more
core   +1 more source

An Integrated Weed Management framework: A pan-European perspective

open access: yesEuropean Journal of Agronomy, 2022
M. Riemens   +4 more
semanticscholar   +1 more source

Weeds and weed management in lettuce

open access: yes, 2007
Published
Tei, F.   +12 more
openaire   +1 more source

Late spring urea application increased apparent carbon dioxide equivalence emissions but fall and summer applications did not

open access: yesJournal of Environmental Quality, EarlyView.
Abstract Synchronizing nitrogen (N) fertilizer application with plant N uptake, as opposed to applying earlier, is believed to improve N use efficiency while simultaneously reducing nitrate leaching, ammonia volatilization, and greenhouse gas emissions. However, little research has been conducted to confirm that this is true.
G. W. Reicks   +6 more
wiley   +1 more source

Livestock in diverse cropping systems improve weed management and sustain yields whilst reducing inputs

open access: yesJournal of Applied Ecology, 2018
1. Intensive cropping systems select for a low diversity of weeds tolerant of chemical control, leading to persistent weed-crop competition and declining biodiversity.
C. MacLaren   +4 more
semanticscholar   +1 more source

Greenhouse gas emissions altered by the introduction of a year‐long fallow to continuous rice systems

open access: yesJournal of Environmental Quality, EarlyView.
Abstract Rice (Oryza sativa L.) production in California follows a norm of mono‐cropping with little to no rotations or fallows. Both winter droughts, which lead to water restrictions, and spring rains, which inhibit field machinery operations, have resulted in increased fallow frequencies, where no crop is grown during the summer growing season.
Zhenglin Zhang   +2 more
wiley   +1 more source

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