نتایج جستجو برای: cropping system

تعداد نتایج: 2237513  

2008
Ardell D. Halvorson Stephen J. Del Grosso

We evaluated the eff ects of irrigated crop management practices on nitrous oxide (N2O) emissions from soil. Emissions were monitored from several irrigated cropping systems receiving N fertilizer rates ranging from 0 to 246 kg N ha−1 during the 2005 and 2006 growing seasons. Cropping systems included conventional-till (CT) continuous corn (Zea mays L.), no-till (NT) continuous corn, NT corn–dr...

Journal: :Journal of environmental quality 2004
J S Strock P M Porter M P Russelle

Despite the use of best management practices for nitrogen (N) application rate and timing, significant losses of nitrate nitrogen (NO3(-)-N) in drainage discharge continue to occur from row crop cropping systems. Our objective was to determine whether a autumn-seeded winter rye (Secale cereale L.) cover crop following corn (Zea mays L.) would reduce NO3(-)-N losses through subsurface tile drain...

Journal: :Journal of agricultural and food chemistry 2013
R C Kaufman J D Wilson S R Bean D R Presley H Blanco-Canqui M Mikha

Cover crop treatments and nitrogen (N) fertilization rates were investigated for their impact on sorghum grain quality attributes. Sorghum was planted in field plots treated with differing cover cropping systems and fertilization rates. The size (weight and diameter) and hardness of the kernels were influenced by both the cover crop and N rates. The protein content increased as the N rate incre...

Journal: :Environment international 2017
Sabine-Karen Lammoglia Marc C Kennedy Enrique Barriuso Lionel Alletto Eric Justes Nicolas Munier-Jolain Laure Mamy

BACKGROUND Reducing the risks and impacts of pesticide use on human health and on the environment is one of the objectives of the European Commission Directive 2009/128/EC in the quest for a sustainable use of pesticides. This Directive, developed through European national plans such as Ecophyto plan in France, promotes the introduction of innovative cropping systems relying, for example, on in...

Journal: :Oriental journal of computer science and technology 2018

Journal: :International journal of research in agronomy 2023

The objective of this review paper is to organize relevant literature on the multiple advantages intercropping system using results researches undertaken in different parts world. Accordingly, materials including journal articles reviews and short communications were used entitled “intercropping as a advantage cropping system”. material can assist researchers who are interested conduct their re...

Journal: :The Science of the total environment 2013
Ram C Dalal Craig M Thornton Bruce A Cowie

The continuing clearance of native vegetation for pasture, and especially cropping, is a concern due to declines in soil organic C (SOC) and N, deteriorating soil health, and adverse environment impact such as increased emissions of major greenhouse gases (CO2, N2O and CH4). There is a need to quantify the rates of SOC and N budget changes, and the impact on greenhouse gas emissions from land u...

2013
Bing Gao Xiaotang Ju Fang Su Fengbin Gao Qingsen Cao Oene Oenema Peter Christie Xinping Chen Fusuo Zhang

We monitored soil respiration (Rs), soil temperature (T) and volumetric water content (VWC%) over four years in one typical conventional and four alternative cropping systems to understand Rs in different cropping systems with their respective management practices and environmental conditions. The control was conventional double-cropping system (winter wheat and summer maize in one year--Con.W/...

2016
Xingyue Li Edwin E. Lewis Qizhi Liu Heqin Li Chunqi Bai Yuzhu Wang

Continuous cropping changes soil physiochemical parameters, enzymes and microorganism communities, causing "replant problem" in strawberry cultivation. We hypothesized that soil nematode community would reflect the changes in soil conditions caused by long-term continuous cropping, in ways that are consistent and predictable. To test this hypothesis, we studied the soil nematode communities and...

Journal: :Journal of environmental quality 2008
Q Fang L Ma Q Yu R W Malone S A Saseendran L R Ahuja

Excessive N and water use in agriculture causes environmental degradation and can potentially jeopardize the sustainability of the system. A field study was conducted from 2000 to 2002 to study the effects of four N treatments (0, 100, 200, and 300 kg N ha(-1) per crop) on a wheat (Triticum aestivum L.) and maize (Zea mays L.) double cropping system under 70 +/- 15% field capacity in the North ...

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