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تعداد نتایج: 4961737 فیلتر نتایج به سال:
This study aimed to investigate the effects of nitrogen fertilizer and a bioherbicide on Egyptian broomrape in a tomato research field at College of Agriculture, Shiraz University, Shiraz, Iran in 2014. Treatments consisted of several levels of nitrate ammonium including 0, 100, 200 and 300 kg ha-1 and a biofertilizer as the first factor and how to use the bioherbicide including soak...
to determine the effect of farm slopes on yield and some agronomic traits of wheat under different fertilizer treatments, an experiment was performed as split plot based on randomized complete block design with three replications in piranshahr in 2011-2012. treatments consisted of farm slope at four levels: (zero, 3, 6 and 10 %) as the main plots and combination of different fertilizer at five ...
over the past decades a number of approaches have been applied for forecasting mortality. in 1992, a new method for long-run forecast of the level and age pattern of mortality was published by lee and carter. this method was welcomed by many authors so it was extended through a wider class of generalized, parametric and nonlinear model. this model represents one of the most influential recent d...
Phosphorus (P) unavailability in agricultural soils is a primary cause of the poor development and yield field crops arid semiarid regions. The goal this research project was to investigate influence integrated management beneficial microbes or biofertilizers (BF), organic P-fertilizers, inorganic P-fertilizers on wheat productivity wheat–maize cropping system. Field experiments were carried ou...
Salt stress is one of the major factors limiting crop productivity worldwide. Grain amaranth is new crop with high yield potential and good nutrition value which can be a good substitute for salt-sensitive crops in saline areas. This research was conducted to evaluate different level of salinity and applied salinity stress at several growth stages on some morphological and physiological traits ...
to study the effects of biofertilizers in their different levels of nitrogen (n) and phosphorus (p) on yield related parameters of barley (sahra cultivar), a split plot experiment based upon a randomized complete block design of three replications was conducted. main plots consisted of: nitrogen at three levels (0, 50 and 100 kg n ha-1 as urea), while sub plots were: phosphorus at two levels (0...
in order to evaluate some agronomical management on weed control in sugar beet this experiment was conducted at safi-abad agr.res.center, dezful in 2002 and 2004. tow planting dates, september 16 and october 12 and five cultivator applications, one and two time application at 4-6 and 6-8 leaf stages, respectively and once plus hand hoeing, weedy and weed free checks arranged in split plot desig...
Simulation of water and solute transport in soil is very useful for optimum management of water and fertilizer use. In this study, the HYDRUS-1D model was used to simulate water and nitrate transport in furrow irrigation of sugarcane. For this putpose, a large-scale experiment was performed as a split plot design based on the randomized complete blocks with 3 replications in a 25-hectare piece ...
The effects of row proportions and nutrient management was studied in potato (Solanum tubersoum L.) + Indian mustard [Brassica juncea (L.) Czernj.] intercropping system during 2014–15 2015–16 at Amar Singh College Farm, Lakhaoti (Bulandshahr), Uttar Pradesh. field experiment laid out a split-split plot design with 3 replications. main treatments consisted varieties, viz. ‘Kufri Pukhraj’, Anand’...
This study was carried out under temperate climate condition of Ilam province, Iran, during 2012-2013 growing season to determine the suitable crop rotation for enhancing nitrogen uptake, utilization, and use efficiency of wheat. A two factor experiment was laid out as split plot arrangement (RCBD) with four replications. The main plots consisted of 6 pre-sowing plant treatments (control, Perko...
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