نتایج جستجو برای: chemical weed control

تعداد نتایج: 1673929  

Journal: :تولید گیاهان زراعی 0
فاطمه ملک ملکی کارشناسی ارشد گروه زراعت، دانشگاه تهران ناصر مجنون حسینی دانشیار دانشکده علوم و مهندسی کشاورزی، دانشگاه تهران حسن علیزاده دانشیار دانشکده علوم و مهندسی کشاورزی، دانشگاه تهران

in this study, the effects of weed control treatments and plant density on lentil (lens culinaris) yield and yield components as well as weed control efficacy were investigated. the study was conducted according to a split-plot arrangement based on randomized completely block design in three replicates in karaj in 2007-2008. the weed control chemical treatments in four levels (trifluralin herbi...

2001
Won Suk Lee David C. Slaughter

Farmers need alternatives for weed control due to the desire to reduce chemicals used in farming. However, conventional mechanical cultivation cannot selectively remove weeds located in the seedline between crop plants and there are no selective herbicides for some crop/weed situations. Since hand labor is costly, an automated weed control system could be feasible. A robotic weed control system...

2013
Kamarul Hawari Ghazali Mohd. Marzuki Mustafa Aini Hussain

The most widely used method for weed control is to use agricultural chemicals (herbicides products). This heavy reliance on chemicals raises many environmental and economic concerns, causing many plantation companies to seek alternatives for weed control in order to reduce chemical usage in their plantation. Since manual labor is costly and expensive, an automated weed control system may be eco...

Journal: :Proceedings of the New Zealand Weed and Pest Control Conference 1975

Journal: :زراعت دیم ایران 0
محسن مهدیه موسسه تحقیقات کشاورزی دیم کشور حمید رحیمیان مشهد دانشگاه تهران خشنود علیزاده موسسه تحقیقات کشاورزی دیم کشور

in order to compare the performance of different weed mangement methods in spring and waiting planting of rainfed chickpea this experiment was carrid out as split plot in randomized complete block design with four replications at maragheh agricaltural research station during 2004–2005 crop season. the main factors were planting ِdates including the waiting and spring planting. sub plots were wee...

2000
Z. A. Cheema A. Khaliq

Conventional methods of weed control are weather dependent, costly and labour intensive. Indiscriminate use of chemicals for controlling weeds may pose environmental problems. Sorghum allelopathy is a new technique, which has been tested for controlling weeds of wheat (Triticum aestivum L.) as a substitute for chemical herbicides to reduce environmental pollution. Mature sorghum herbage contain...

Journal: :علوم گیاهان زراعی ایران 0
جمشید نظری عالم حسن علیزاده حمید رحیمیان مشهدی

grand cherry (physalis divaricata) is considered as the most problematic weed in sugar beet farms in alashtar county, iran. special experiments involving chemical control of this weed were carried out using trifluralian, etalfluralian and chloridazon herbicides under laboratory conditions. the experiments were designed in a randomized complete block design in three replications, carried out in ...

2012
Hamid Sodaeizadeh Zahra Hosseini

Biological weed management is a system that incorporates the use of diverse biological organisms and biologically-based approaches including allelopathy, crop competition, and other cultural practices to significantly reduce weed densities in a manner that is similar to use of chemical herbicides alone. Interest in developing effective biological weed management systems continues to increase be...

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