in order to study of yield, yield component, plant height, total dry matter and radiation use efficiency with 13 spring varieties of rapeseed ,an experiment was carried out in 2007 growing season at agriculture and natural resources research station of torogh,mashhad. these cultivars were from three rapeseed species belonged to brassica napus, brassica rapa and brassica juncea. experimental des...

the present study was carried out to establish the relationships between carcass yield and some body measurements in lori goat breed. the first body weight (bw) and morphological traits of 186 heads goat were recorded. the animals were then slaughtered to calculate the carcass yield. results showed the colinearity among the traits. in order to eliminate colinearity problems, principal component...

in order to investigate the effects of different levels of nitrogen rate on yield and seed yield components of wheat cultivars, an experiment was conducted on araghi mahalleh (gorogan) research farm in 2008. treatments, nitrogen in the form of urea (0, 90, 180 and 270 kg/ha) and cultivars (tajan, falat and n81-18) were arranged as factorial based on randomized complete block design with four re...