نتایج جستجو برای: sole cropping of sorghum weed infested

تعداد نتایج: 21169534  

1997
Johannes Lehmann Inka Peter Claudia Steglich Gerhard Gebauer Bernd Huwe Wolfgang Zech

This paper discusses the effects of intercropping and tree pruning on root distribution and soil water depletion in an alley cropping system with Acacia saligna and Sorghum bicolor in northern Kenya. Root distribution was determined by destructive sampling, and the soil water suction was measured with tensiometers and gypsum blocks, both up to 150 cm depth. The root systems of the intercropped ...

Journal: :بوم شناسی کشاورزی 0
علیرضا کوچکی مهدی نصیری محلاتی حسن فیضی شهرام امیرمرادی فرزاد مندنی

in order to study the effect of strip intercropping of maize (zea mays l.) and bean (phaseolus vulgaris l.) on the dry matter yield and land equivalent ratio (ler) in weedy and weed free treatments, an experiment was conducted at the agricultural station of college of agriculture, ferdowsi university of mashhad, iran. treatments were strip width of 2, 3, 4 and 5 rows and sole cropping of each c...

Journal: :بوم شناسی کشاورزی 0
سارا صفی خانی محمدرضا چائی چی احمدعلی پوربابائی

in order to study the effect of different n fertilizer on berseem forage in an intercropping with basil, this experiment was conducted in research farm of college of agriculture, university of tehran during growing season 2011. experimental treatments were arranged as split plots based on a randomized complete block design with three replications. different fertilizers consisted of control (no ...

Journal: :علوم گیاهان زراعی ایران 0
خلیل جمشیدی دانشکده کشاورزی دانشگاه زنجان، استادیار داریوش مظاهری پردیس کشاورزی و منابع طبیعی دانشگاه تهران، استاد ناصر مجنون حسینی پردیس کشاورزی و منابع طبیعی دانشگاه تهران، استاد حمید رحیمیان مشهدی پردیس کشاورزی و منابع طبیعی دانشگاه تهران، استاد سید علی پیغمبری پردیس کشاورزی و منابع طبیعی دانشگاه تهران، دانشیار

in order to study the weeds frequency and dry matter in corn and cowpea sole cropping and intercropping systems, an experiment using replacement and additive techniques was conducted using different combination of intercropping in seven levels with ratio of 1:1 (50% corn + 50% cowpea), 1:2 (33% + 67%), 2:1 (67% + 33%), (100% + 20%), (100% + 10%), 100% corn and 100% cowpea, two levels optimal an...

Journal: :بوم شناسی کشاورزی 0
حمداله اسکندری اشرف عالی زاده امرایی

introduction weeds are main factors reducing crops yield, especially under organic farming conditions (). it has been reported that weed populations are more in organic farming compared to conventional cropping systems, resulting in more reduction of growth and yield. although the chemical control is a fast and effective way for controlling weed populations, some negative impacts of the recent ...

Journal: :Agronomy 2021

Sweet sorghum (Sorghum bicolor L. Moench) is highly susceptible to weed competition during the early growth stages; hence, intercropping considered overcome challenge. This study was conducted determine performance of sweet in legume systems under different management pressures. Three cropping (sole crop, inter-row, and intra-row intercropping) three levels (no weeding after crop emergency, cea...

ژورنال: علوم زراعی ایران 2019
Abbasdokht, Manochehr, Abdali Mashhadi, Ali, Ehsanipour, Ali Reza, Gholipour, Hamid,

To evaluate radiation use efficiency and weed control, this experiment was conducted in two locations in Ahwaz, Iran, in a randomized complete block design with 14 treatments and four replications in 2016-2017. Treatments included: Sole sugarcane, Sole soybean, Sole cowpea, Sole soybean+rhizobium, Sole cowpea+rhizobium, Sole sugarcane+mycorrhizal, Intercropping sugarcane with cowpea, Intercropp...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد 1375

این آزمایش با استفاده از طرح بلوکهای کامل تصادفی با 8 تیمار و در 3 تکرار با هدف اصلی تعیین دوره بحرانی رقابت علفهای هرز با سیب زمینی در مزرعه مرکز تحقیقات کشاورزی خراسان انجام شد. تیمارها شامل دو گروه 4 تایی بودند. در گروه تیمارهای (weed free) به مدتهای 3، 6، 9 و 12 هفته پس از سبزشدن سیب زمینی، مزرعه عاری از علفهای هرز نگه داشته شد و در گروه تیمارهای (weed infested) به مدتهای 3، 6، 9 و 12 هفته ...

Journal: :Biomedical Journal of Scientific & Technical Research 2018

Journal: :international journal of advanced biological and biomedical research 2014
safar nasrollahzadeh jalil shafagh-kolvanagh mojgan mohammadi parisa aghaie-garachorlu

an experiment was conducted at the research farm of the faculty of agriculture, university of tabriz, iran in 2012 to study the effect of intercropping of chickpea and dragon’s head on yield, yield components and morphological traits of dragon’s head as affected by four weed management time. the experiment was laid out in rcb design with three replications. intercropping patterns included; a1, ...

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