نتایج جستجو برای: 5 mechanical weeding

تعداد نتایج: 1430267  

Journal: :Communications in agricultural and applied biological sciences 2012
D Jaunard J P Bizoux A Monty F Henriet M De Proft F Vancutsem G Mahy B Bodson

Currently, economic, agronomic and environmental concerns lead to reduce the use of herbicides. Mechanical weeding can help to reach this objective. Dynamics and biology of wild chamomile (Matricaria chamomilla L.) populations were assessed as well as dynamic of winter wheat (Triticum aestivum L.) for four level of application of a weeder-harrow (0, 1, 2, 3 treatment(s)). After each treatment, ...

2010
L. Strnad M. Hejcman V. Křišťálová P. Hejcmanová V. Pavlů

In Europe, Rumex obtusifolius L. is the most problematic grassland weed species, especially under the conditions of organic farming. The aims of this study were (1) to investigate the effectiveness of repeated mechanical weeding of R. obtusifolius from the permanent sward, cut two or three times per year, by digging the plants out from 5 cm below the soil surface, and (2) to test the effect of ...

Journal: :علوم گیاهان زراعی ایران 0
یوسف غلام پور شمامی دانشجوی کارشناسی ارشد پردیس کشاورزی و منابع طبیعی دانشگاه تهران ناصر مجنون حسینی استاد پردیس کشاورزی و منابع طبیعی دانشگاه تهران حسن علیزاده استاد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران

to determine the optimum weed management method and plant population density on chickpea yield, a split plot experiment based on rcbd with four replications was carried out at the university of tehran research farm (located in karaj) during 2010-2011. the main factor consisted of nine treatments including: 1. trifluralin pre-plant, 2. pendimethalin pre-plant, 3. complete weeding, 4. imazethapyr...

Journal: :کشاورزی (منتشر نمی شود) 0
محمود صفری مربی پژوهش، موسسه تحقیقات فنی و مهندسی کشاورزی، کرج حسین نجفی استادیار پژوهش، مؤسسه تحقیقات گیاهپزشکی کشور، تهران

in order to comparison of weeds mechanical control for sugar beet, a rotary cultivator was designed and constructed in first year, and compared with other mechanical control in second year. five treatments, included: rotary hoe cultivator, furrower cultivator, rotary cultivator, no weeding and manual weeding were compared. experiment design was random complete blocks design (rcbd) with three re...

2011

Weed control is one of the most labor-intensive tasks for organic vegetable farms, and a realtime crop recognition system is the main challenge to develop the automatic mechanical weeding system. One solution using time-of-flight (TOF) 3D camera and advanced computation technique based on FPGA is proposed to address this problem. It has great advantages and can work reliably in the real harsh w...

2015
Kim Arild Steen Ole Roland Therkildsen Ole Green Henrik Karstoft

Mechanical weeding is an important tool in organic farming. However, the use of mechanical weeding in conventional agriculture is increasing, due to public demands to lower the use of pesticides and an increased number of pesticide-resistant weeds. Ground nesting birds are highly susceptible to farming operations, like mechanical weeding, which may destroy the nests and reduce the survival of c...

Journal: :کشاورزی (منتشر نمی شود) 0
اکبر عرب محمد حسینی استادیار، گروه مکانیک ماشین های کشاورزی، پردیس ابوریحان، دانشگاه تهران هادی صمیمی اخیجهانی کارشناس ارشد گروه مکانیک ماشین های کشاورزی، پردیس ابوریحان، دانشگاه تهران حامد مهرآور کارشناس ارشد، گروه مکانیک ماشین های کشاورزی، پردیس ابوریحان، دانشگاه تهران جعفر مساح استادیار، گروه مکانیک ماشین های کشاورزی، پردیس ابوریحان، دانشگاه تهران

mechanical weeding is one of the non-chemical methods to control weeds. in this paper a ‎new mechanism has been presented for mechanical cultivation. the machine works based on ‎the manual tools operation, which farmers still use in small scale for weeding and consists of a ‎number of four-bar linkage mechanisms. each mechanism consists of a blade which moves ‎forward (active course) and backwa...

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...

2013
Eva Schreck Laure Gontier Camille Dumat Florence Geret

In recent literature, very few studies have reported the use of the combination of indicators from ecological communities and ecotoxicity biomarkers in field experiments to assess agricultural quality. Therefore, the aim of this study was to determine the influence of three soil management practices of vine inter-rows (chemical weeding, mechanical weeding and grass-covering) on earthworms, in t...

2013
R. Akter M. A. Samad F. Zaman M. S. Islam

An experiment was conducted at the Agronomy Field Laboratory of Bangladesh Agricultural University, Mymensingh to assess the effect of weeding on growth, yield and yield contributing characters of mungbean (Vigna radiata L.) cv. BINA mung4 during October 2011 to February 2012. The experiment was laid out in a randomized complete block design with four replications. The trial comprised seven tre...

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