نتایج جستجو برای: weed biomass

تعداد نتایج: 73899  

2006
K. Saito B. Linquist B. Keobualapha K. Phanthaboon T. Shiraiwa T. Horie

In northern Laos, rapid population growth and government policies to reduce the area under slash-and-burn systems have resulted in increased cropping intensity, which has increased weed pressure and reduced yields of upland rice. Promising alternative cropping systems include the use of weed-suppressing and multi-purpose legumes as short-term fallow crops. In this study, Stylosanthes guianensis...

2006
FRANK L. YOUNG MARK E. THORNE DOUGLAS L. YOUNG

No-till cropping is an option for growers needing to reduce soil erosion in the Palouse annual-cropped region of the Pacific Northwest, which is well suited for wheat production. A 6-yr field study was conducted to determine optimum levels of fertilizer and herbicide inputs in a no-till continuous wheat crop production system. Three levels of nitrogen (N) and two weed management levels (WML) we...

2014
Leilei Tang Chuanpeng Cheng Kaiyuan Wan Ruhai Li Daozhong Wang Yong Tao Junfeng Pan Juan Xie Fang Chen

Weeding and fertilization are important farming practices. Integrated weed management should protect or improve the biodiversity of farmland weed communities for a better ecological environment with not only increased crop yield, but also reduced use of herbicides. This study hypothesized that appropriate fertilization would benefit both crop growth and the biodiversity of farmland weed communi...

Ahmad Tobeh Gorban Didehbaz Mahrokh Bolandi Amoughein,

 In order to evaluate the effects of cover crops on reduced weed biomass in hybrid sunflower an experiment was carried in the research stations, Natural Resources Medicinal Plants (Samian_Ardabile) with 3 replicates in 1390-1391. The first factor was considered three type of cover crops, winter rye, spring barley, winter wheat with 2 control treatment, second factor was mulch management at two ...

Journal: :علوم گیاهان زراعی ایران 0
محمدعلی ابوطالبیان استادیار دانشکده کشاورزی دانشگاه بوعلی سینا، همدان داریوش مظاهری استاد پردیس کشاورزی و منابع طبیعی دانشگاه تهران

the recent decades emphasis on reducing pesticide use especially herbicide has led to increased interest in alternative weed control methods. the purpose of this study was to evaluate the hilling time and simultaneous interseeding of two cover crops as living mulch to control weeds in potato and to determine the impact of these actions on potato yield. a randomized complete block design as spli...

Journal: :علوم گیاهان زراعی ایران 0
اسحاق کشتکار حسن علیزاده فریبرز عباسی

to investigate the efficiency of eradicane application, using herbigation as compared with conventional method (spraying), concerning weed biomass and density reduction and change in corn grain yield, a factorial experiment was conducted based on randomized complete block design in 2006 at research fields of university of tehran (karaj). eradicane was applied at 4.5 (labeled rate), 3.15 or 5.85...

Journal: :تولید گیاهان زراعی 0

geostatistical techniques were used to describe the spatial distribution of weeds, under conventional management conditions and theirs effect on wheat biomass production over the course of one growing season (2008-2009), in a wheat (triticum aestivum l.) field at research station of shahrood university, iran. weeds seedling were identified and counted at 121 points of field based on two interva...

2015
Christos Vasilikiotis Athanasios Gertsis Konstantinos Zoukidis Ali Nasrallah

Cover crops are essential in agricultural management and especially in organic farming for protecting the soil from erosion, competing with weeds, preventing evaporative losses and improving soil quality and fertility. The choice of cover crop species is crucial in achieving the highest level of weed suppression and soil fertility enhancement. Cover crop systems with rye or mixtures of legumes ...

Field experiments were conducted during 2017 and 2018 to evaluate the efficacy of herbicides NICOSULFURON and EPTC alone or in combination with seed priming on weed control and corn yield. NICOSULFURON (80 g a.i. ha‒1) was applied at four- to six-leaf stage of corn as post-emergence and EPTC (4920 g a.i. ha‒1) applied as pre-plant incorporation (PPI). Among the herbicide treatments, the lowest ...

2014
Hilary Sandler

Corn gluten meal (CGM) is a natural product that is typically used as a fertilizer (8-0-0), but also has reported herbicidal activity against germinating seeds. Its use as a method of preemergence weed control on cranberry farms was evaluated. The use of CGM in cranberry is a novel approach, therefore a greenhouse study was conducted to evaluate any potential phytotoxicity or harmful effects of...

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