نتایج جستجو برای: with 50 per cent vetch cover crop

تعداد نتایج: 9437544  

2005
Daniela J. Shebitz Robin W. Kimmerer

The restoration potential of Sweetgrass (Anthoxanthum nitens (Weber) Y. Schouten & Veldkamp) was evaluated through a field experiment conducted on Kanatsiohareke, a Mohawk farm, and at the LaFayette Experiment Station near Syracuse, New York. The effects of competition reduction and two cover crops on Sweetgrass reestablishment success were examined. Sweetgrass was planted under four treatments...

Journal: :بوم شناسی کشاورزی 0
سیده ثمانه هاشمی فائزه زعفریان اسفندیار فرهمندفر میلاد باقری شیروان

introduction amount and vertical distribution of leaf area are essential for estimating interception and utilization of solar radiation of crop canopies and, consequently dry matter accumulation (valentinuz & tollenaar, 2006). vertical distribution of leaf area is leaf areas per horizontal layers, based on height (boedhram et al., 2001). above-ground biomass is one of the central traits in func...

2017
Rebecca E. Shelton Krista L. Jacobsen Rebecca L. McCulley

Agroecosystem nitrogen (N) loss produces greenhouse gases, induces eutrophication, and is costly for farmers; therefore, conservation agricultural management practices aimed at reducing N loss are increasingly adopted. However, the ecosystem consequences of these practices have not been well-studied. We quantified N loss via leaching, NH3 volatilization, N2O emissions, and N retention in plant ...

Journal: :بوم شناسی کشاورزی 0
عباداله مؤیدی شهرکی مجید جامی الاحمدی محمد علی بهدانی سهراب محمودی

in order to evaluate the effect of cover crops and mulch management on yield and yield components of safflower (carthamus tinctorius l.), a study was conducted as split-plot based on a complete randomized block design with four replications during 2008-2009. the mulch managements as main factor were consisted of three levels including incorporation of cover crops with soil, harvesting + removin...

2009
Yao-Chi Lu YAO-CHI LU K. BRADLEY WATKINS JOHN R. TEASDALE AREF A. ABDUL-BAKI

Cover crops are important components of sustainable agricultural systems. They increase surface residue and aid in the reduction of soil erosion. They improve the structure and water-holding capacity of the soil and thus increase the effectiveness of applied N fertilizer. Legume cover crops such as hairy vetch and crimson clover fix nitrogen and contribute to the nitrogen requirements of subseq...

2016
G. H. Mehring

Field experiments at Oakes, ND, USA in 2010 and Carrington, ND, USA in 2011 were conducted to evaluate the potential for cover crops grown in the Northern Great Plains, USA in order to reduce weed emergence and density in irrigated potatoes. Treatments included five cover crop treatments and three cover crop termination treatments. Termination of cover crops was done with glyphosate, disk-till,...

2006
Upendra M. Sainju Wayne F. Whitehead Bharat P. Singh Shirley Wang

Sustainable soil and crop management practices that reduce soil erosion and nitrogen (N) leaching, conserve soil organic matter, and optimize otton and sorghum yields still remain a challenge. We examined the influence of three tillage practices (no-till, strip till and chisel till), four cover rops {legume [hairy vetch (Vicia villosa Roth)], nonlegume [rye (Secaele cereale L.)], vetch/rye bicu...

2017
P. J. Moran S. M. Greenberg

Weeds may be suppressed by winter cover crops and the use of organic herbicides such as vinegar. Black oat (Avena strigosa) and hairy vetch (Vicia villosa) winter cover crops were planted for 2 years as part of a sustainable production system for cotton in the Lower Rio Grande Valley of Texas, and were till-killed each spring prior to cotton planting. Palmer amaranth (Amaranthus palmeri), commo...

جلیل اصغری میدانی خشنود علیزاده دیزج علیرضا فخرواعظی, فرهاد آهک‌پز محسن مهدیه مقصود حسن پورحسنی

    Drylands cover about 6.2 million hectares of arable lands across Iran, but annual feed legumes are not present in rainfed crop rotations. Introduction of new forage cultivars with high productivity and nutritive values is a key solution in drylands development. Vd-2446 a vetch (Vicia dasycarpa) line with origin of Italy has been selected from vetch nurseries provided by ICARDA during 1995 a...

2005
Upendra M. Sainju Wayne F. Whitehead Bharat P. Singh

leach into groundwater after crop harvest in the fall, and depending on the species, can sequester atmospheric C Biculture legume–cereal cover cropping may enhance aboveand and/or N, thereby reducing the amount of N fertilizer belowground biomass yields and C and N contents. The increase in C and N supply to the soil has the potential to improve soil quality required for summer crops (Hargrove,...

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