in order to evaluate the effects of cover crops on reduced weed biomass in hybrid sunflower an experiment was carried in the research stations, natural resources medicinal plants (samian_ardabile) with 3 replicates in 1390-1391. the first factor was considered three type of cover crops, winter rye, spring barley, winter wheat with 2 control treatment, second factor was mulch management at two l...

in order to study of hydropriming, planting depth and nitrogen split application effect on yield and yield components of double cross hybrid of corn, an experiment was carried out as factorial based on randomized complete block design (rcbd) with four replications. nitrogen split application included (400 kg/ha at sowing date, 100 kg/ha at sowing date and 300 kg/ha 25 to 50 days after sowing da...

abstract in order to study the effect of planting season (autumn and spring) and plant density on growth traits and flower yield (dry weight of flower) of matricaria (matricaria chamomilla), an experiment was carried out at the research field of agricultural faculty of shirvan, affiliated to ferdowsi university of mashhad. a split plot design with two factors, including planting time and plant ...

in order to evaluate effects of plant density and planting date on quality properties of grass pea (lathyrus sativus l.), a factorial experiment was conducted during 2008, based on complete randomized block design with four replications in research farm of faculty of agriculture, the university of birjand, birjand, iran. plants were planted at march 5 and 20, and apr 3, with 30, 40, 50 and 60 p...

abstract the goal of this survey is to prepare the dry land wheat atlas for zanjan province, according to the climate data. so we can recognize which areas are susceptible and to understand climate capabilities and limitations for dry land wheat. for reaching this purpose first raining and temperature datas of the research region were gathered and analyzed. at the first stage, proper according ...

this study was aimed at evaluating the effects of planting’s different dates on the trend of leaf area index, dry biomass weight and panicle weight in addition to the yield of rice varieties for one year in the north region of khuzestan, as spilt plots in the form of fully random blocks in three repetitions. main factor was the date of planting at three levels (26 may, 10 jun, 26 jun) and the s...