نتایج جستجو برای: seed density

تعداد نتایج: 483256  

Journal: :پژوهش های زراعی ایران 0
حمید رضا خزاعی احمد نظامی بیژن سعادتیان امید آرمندپیشه

the study was conducted to evaluate the effect of seed priming on root growth of two barley cultivars (hordeum vulgare l.) under salinity stress was performed in phytogel. the treatments included two cultivars of barely (yusuf and maquie), levels of seed priming (control, hydro-priming and priming with 4.35 g l-1 of urea) and four levels of nacl salinity stress (0, 0.2, 0.3 m). the experiment w...

ژورنال: علوم آب و خاک 2006
حمدالله کاظمی, , عزیز جوانشیر, , هوشنگ آلیاری, , غلامرضا خواجوئی نژاد, , محمد جواد آروین, ,

This study was conducted to evaluate the effects of four levels of irrigation (irrigation of plants after I1 = 40, I2 =60, I3 = 80 , and I4 = 100mm of evaporation from class A pan) and four plant densities(D1 = 30, D2 = 40, D3 = 50 and D4 = 60 plants/m2) on the seed yield and seed quality in three soybean cultivars(V1=Hobit, V2=Williams and V3=Hill) in a split factorial design, based on the com...

Ahmed M. M. Lazim Elnazir M. Daw-elbait Sahar Ezzat, Salih. A. Elsheikh

In order to determine the optimum rate of Vigna sun-hum seed sowing for rangeland rehabilitation in sandy soil of North Kordofan, Sudan, two trials were conducted separately under managed and unmanaged conditions at El-obeid Agricultural Research Farm in Sheikan locality of North Kordofan State in 2015 and 2016. Seed rates were 1, 2, 3, 4 and 5 Kg/feddan (4200m) and arranged by a Completely Ran...

حمدالله کاظمی, , عزیز جوانشیر, , هوشنگ آلیاری, , غلامرضا خواجوئی نژاد, , محمد جواد آروین, ,

This study was conducted to evaluate the effects of four levels of irrigation (irrigation of plants after I1 = 40, I2 =60, I3 = 80 , and I4 = 100mm of evaporation from class A pan) and four plant densities(D1 = 30, D2 = 40, D3 = 50 and D4 = 60 plants/m2) on the seed yield and seed quality in three soybean cultivars(V1=Hobit, V2=Williams and V3=Hill) in a split factorial design, based on the com...

Journal: :پژوهش های علوم و صنایع غذایی ایران 0
(pages 88-96) s. m. a. razavi i. zahedi h. mahdavian mehr

due to medical and dietary properties of the plantago major l. seed, it is necessary to know engineering properties in order to design post harvest equipments. engineering properties of plantago major l. seed was determined only at the moisture content of 7.98% dry basis, because of it produces mucilaginous components when it is soaked in water. the average of length, width, surface area, spher...

Journal: :علوم باغبانی 0
معظم حسن پور اصیل مهدی دهستانی اردکانی محمد ربیعی

to study the effect of seed density and plant distance on yield and growth parameters of radish, an experiment was conducted in research of station rice at office rasht in 2008-2009. this study was set in secondary culture after rice by factorial experiment with randomized complete block design with 3 replications. treatments consisted of factorial arrangement of three seed density levels (5, 1...

Journal: :پژوهش های زراعی ایران 0
مجید نوروزی سید عبدالرضا کاظمینی

in order to evaluate the effect of water stress and plant density on growth and seed yield of safflower, a study was conducted during 2009 growing season at agricultural college of shiraz university. the experimental design was split plot based on randomized complete block design with three replications. the treatments were deficit irrigation (100, 75, and 50% of field capacity-fc) as main plot...

Journal: :The American naturalist 2008
Lorenzo Mari Renato Casagrandi Marino Gatto Tal Avgar Ran Nathan

Plant recruitment in nature exhibits several distinctive patterns ranging from hump shaped to monotonically decreasing with distance from the seed source. We investigate the role of postdispersal seed predation in shaping these patterns, introducing a new mechanistic model that explicitly accounts for the movement strategy used by seed eaters. The model consists of two partial differential equa...

Journal: :desert 2006
n. baghestani maybodi m. a. baghestani maybodi s. soufizadeh

the high quality and quantity seed production in old saxual shrubs are essential for regeneration and sustainable development of saxual forests in desert areas. the objective of this study was to determine the effects of different pruning height on saxual seed production. the study was carried out in an obviously wilted saxual forest located in ashkezar desert in yazd in 1994. the experiment wa...

2012
Qiao-Ling Yan Jiao-Jun Zhu Li-Zhong Yu

Promoting the seed regeneration potential of secondary forests undergoing gap disturbances is an important approach for achieving forest restoration and sustainable management. Seedling recruitment from seed banks strongly determines the seed regeneration potential, but the process is poorly understood in the gaps of secondary forests. The objectives of the present study were to evaluate the ef...

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