the objective of this study was to evaluate the effect of plant population and nitrogen rate on yield and yield components of corn (zea mays l, hybrid 704) in 2008 at mamasani region, fars province. the experiment was conducted as a factorial based on randomized complete block design with three replications. experimental factors was four plant population (75000, 90000,105000, and 130000 plant h...

Genotypic variation is useful to breeders when selecting genotypes to improve particular traits. Inorder to study of genetic diversity 20 genotypes of Hordeum murynum studied in the form of randomized complete block design the experimental field of islamic azad university shahre rey branch with 3 replication in the year 2012. Notes traits was conducted including days to heading, days t...

to investigate the effect of wild mustard plant density and nitrogen fertilizer on morphological characters, yield and yield components of canola a split-plot experiment based on a randomized complete block design with 3 replications was carried out in bu-ali sina university of hamedan, in 2009. 4 levels of nitrogen fertilization (100, 150, 200 and 250 kgn h-1) were assigned to main-plots and p...

Biological fertilizers are compounds comprising various free living microorganisms that are able to change the basic nutrients into available form through biological procedures. Being an important source of nutrients in sustainable agriculture, these fertilizers lead to better seed germination and development of root system. In order to investigate the effect of biological fertilizers on the me...

this research was conducted to study the effects of different salinity levels and exposure times on grain yield and yield components in a green-house experiment at gorgan university of agricultural science and natural resources during 2007- 2008 growing season. a factorial sand culture experiment with three completely randomized replications was used. salinity levels were -0.002, -0.25, -0.50, ...

to study the effect of water deficit and plant density on yield and yield components of cumin (cuminum cyminum), an experiment was conducted during the 2002 - 2003 growing season at research farm of zabol university. in this study, the effects of plant density (25, 50, 100, 150, and 200 plants per m²) and water stress (before flowering, flowering, seed filling and seed hardening vs adequate irr...

to study the yield and change the attributes associated with it, the field experiments were conducted at the gorgan university of agricultural sciences research farm, gorgan, iran in the growing seasons of 2007-2008 and 2008-2009 under well-watered conditions. the 16 cultivars were sown in a randomized complete block design with three replications. the results showed that during breeding activi...