نتایج جستجو برای: planting season

تعداد نتایج: 68618  

2017
Olivier Samson-Robert Geneviève Labrie Madeleine Chagnon Valérie Fournier

Worldwide occurrences of honey bee colony losses have raised concerns about bee health and the sustainability of pollination-dependent crops. While multiple causal factors have been identified, seed coating with insecticides of the neonicotinoid family has been the focus of much discussion and research. Nonetheless, few studies have investigated the impacts of these insecticides under field con...

Farzad Paknejad M. Shojaei Poor Mehrdad Esfandiari, S.R. Hassanpour Avanji,

In order to study planting date impacts and ending season drought stress  on grain yield and  gaining weight  rate  and wheat filling period characteristics in new advanced bread wheat genotypes ,this research  is done by using plan statistical  of spilt plot  in form of complete random blocks basic  plot with 3 replications in both common separated irrigation  and ending season drought  stress...

2015
Max A. Henschell Christopher R. Webster David J. Flaspohler Chad R. Fortin Eric Gordon Lamb

United States energy policy mandates increased use of renewable fuels. Restoring grasslands could contribute to a portion of this requirement through biomass harvest for bioenergy use. We investigated which plant community characteristics are associated with differences in biomass yield from a range of realistic native prairie plantings (n = 11; i.e., conservation planting, restoration, and wil...

2017
Jian Zhou Lijuan Cui Xu Pan Wei Li Manyin Zhang Xiaoming Kang

Plant-plant interactions that change along environmental gradients can be affected by different combinations of environmental characteristics, such as the species and planting density ratios. Suaeda salsa and Scirpus planiculumis are regionally dominant species in the Shuangtai estuarine wetland. Compared with non-clonal S. salsa, clonal S. planiculumis has competitive advantages because of its...

2016
Gary S. Bañuelos Irvin S. Arroyo Sadikshya R. Dangi Maria C. Zambrano

Selenium (Se) biofortification has been practiced in Se-deficient regions throughout the world primarily by adding inorganic sources of Se to the soil. Considering the use of adding organic sources of Se could be useful as an alternative Se amendment for the production of Se-biofortified food crops. In this multi-year micro-plot study, we investigate growing carrots and broccoli in soils that h...

Journal: :پژوهش های زراعی ایران 0
امیرحسین شیرانی راد حمید رضا جبّاری عباس دهشیری

sowing date is an important determinant of yield in canola. cultivation of winter rapeseed cultivars in semi arid regions of iran however it has high potential for production, but, mentioned cultivars are late maturity and this late maturity cause to that silique formation and seed filling periods mature in the same time with hot and dry weather condition. in contrast, spring rapeseed cultivars...

A field experiment was carried out during the 2013-2014 growing season in Lorestan Province (Iran) to evaluate the effect of three planting densities (30, 55, and 83 plant.m-2) on growth indices and grain yield of four chickpea cultivars (Azad, Hashem, Arman and ILC482) under the fall dry land farming condition. The experiment design was factorial based on a randomized complete block design (RC...

Many crops are grown in regions and sowing dates which the climate is not in the desirable condition, bringing about decreases in efficiency of agricultural inputs and crop yield.  The spring safflower is planted under irrigation condition in Isfahan province and the temperature during growing season plays a major role in its seed yield.  For thermal zoning of spring safflower planting in Isfah...

Farzad Paknejad M. Shojaei Poor Mehrdad Esfandiari, S.R. Hassanpour Avanji,

In order to study planting date impacts and ending season drought stress  on grain yield and  gaining weight  rate  and wheat filling period characteristics in new advanced bread wheat genotypes ,this research  is done by using plan statistical  of spilt plot  in form of complete random blocks basic  plot with 3 replications in both common separated irrigation  and ending season drought  stress...

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