نتایج جستجو برای: berseem clover sole cropping weed contaminated

تعداد نتایج: 86035  

2014
Stephen L. Young George Meyer Wayne Woldt S. L. Young G. E. Meyer W. E. Woldt

In cropping systems, integrated weed management is based on diversification. Rather than relying solely on one or two herbicides, a multiplicity of weed control strategies is employed. Yet, integrated weed management as currently practiced is far from integrated; every weed is still managed the same regardless of location or season. The recent development of precision application technology is ...

2002
Muhammad Sarwar

Four million hectares of wheat are planted after cotton and rice in Pakistan. Little research has been done on the aronomy of wheat following these crops on a cropping pattern basis. Both of these crops delay wheat planting, and it is estimated that 40–50 kg of wheat grain is lost for every day that planting is delayed past 20 November. Current recommendations for land preparation, fertilizer u...

2010
Raj Malik

Cropping systems in Western Australia (WA) are strongly dominated by cereals (wheat, barley and oaten hay) and are inextricably linked to soil quality and moisture supply. So a major research challenge is to devise cropping systems that improve soil health and maximise water-use efficiency. For a profitable and sustainable production system there is a clear need for ‘break crop’ to provide a pe...

2010

Weed pressure in 1995 was incredible! What happened to produce such a glorious crop of weeds? The answer: drought! The Drought of 1995 and Weeds and Weed Control in 1996 Weed pressure in 1995 was, in a word, incredible! I toured many areas — golf courses, lawns, athletic fields, and institutional grounds — that were solid crabgrass, knotweed, clover, etc. In many of these areas, if there weren’...

ژورنال: علوم آب و خاک 2000
ارزانی, احمد ,

Knowledge of the effects of row spacings and seeding rates on dual-purpose forage and seed production of an annual legume crop is essential for its proper agronomical exploitation. In this study, the effects of various row spacings and seeding rates on dry matter and seed yield in berseem clover (Trifolium alexandrinum L.) were evaluated in two consecutive years. The experimental design was a s...

2015
A. N. Rao B. S. Chauhan

India has a wide range of agroclimates and soil types. The highly diverse agriculture and fanning systems are beset with different types of weed problems. Weeds cause 10-80% crop yield losses besides impairing product quality and causing health and environmental hazards. Invasive alien weeds are a major constraint to agriculture, forestry and aquatic environment. Crop-specific problematic weeds...

Journal: :journal of agricultural science and technology 2010
gh. r. mohsenabadi m. r. jahansooz m. r. chaichi h. rahimian a. liaghat

to evaluate the yield and quality of barley (hordeum vulgare)–vetch (vicia desycarpa) intercropping, a series of experiments were conducted at the experimental field of the college of agriculture, university of tehran, in karaj (iran) from 2003 to 2005. the ex-periments were arranged in a randomized complete block with a split plot design and four replications. three levels (0, 45 and 90 kg n h...

Journal: :بوم شناسی کشاورزی 0
آلاله متقیان همت اله پیردشتی وحید اکبر پور غزال سراج پور محمد یعقوبی خانقاهی سجاد شریعت نژاد

in order to study the possibility of intercropping of basil and sesame, an experiment was carried out in a randomized complete block design with three replications at the sari agricultural sciences and natural resources university during growing season of 2009-2010. treatments consisted of different planting ratio, p1: sole cropping of basil, p2: 75% basil+ 25% sesame, p3: 50% basil+ 50 % sesam...

Journal: :Phytopathology 2006
Robert P Larkin C Wayne Honeycutt

ABSTRACT Eight different 3-year cropping systems, consisting of soybean-canola, soybean-barley, sweet corn-canola, sweet corn-soybean, green bean-sweet corn, canola-sweet corn, barley-clover, and continuous potato (non-rotation control) followed by potato as the third crop in all systems, were established in replicated field plots with two rotation entry points in Presque Isle, ME, in 1998. Cro...

Journal: :یافته های تحقیقاتی در گیاهان زراعی و باغی 0
محمد زمانیان مؤسسه تحقیقات اصلاح و تهیه نهال و بذر، کرج محمد اکبری راد محمدرضا عباسی اردلان مهرانی علی مقدم ناصر ظریفی نیا خلیل چابک

in order to select and release of alborz-1, the new cultivar of crimson clover suitable for cropping systems based on clover planting, several research projects were carried out at seed and plant improvement institute (spii) during 1997-2008. these studies were carried out using a split plot design (based on a rcbd) with 12 treatments and four replications in karaj, dezful and esfahan research ...

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