Biochar is a carbon-rich material produced during organic waste pyrolysis. In this context, two experiments were performed to evaluate the effect of biochar from rice husks and cattle manure on soil fertility common bean production, as well identify optimal dose be applied. The first experiment (Experiment I) was conducted according completely randomized design (factorial scheme 2 × + 1) with s...

effect of free and symbiotic nitrogen fixing bacteria on seed and seedling produced seeds under deficit irrigation was conducted in laboratory and field experiments in 2006. in laboratory of karaj’s seed and plant research and certificate institute an experiment was conducted based on factorial in form of completely randomized design with four replications and in field’s of islamic azad univers...

this experiment was conducted to evaluate the effects of different levels of costmary(tanacetum balsamita)medicinal plant on performance, egg traits, and blood biochemical parameters of laying hens. hundred-eighty of hi-line laying hens (w 36) from 46 until 58 weeks of age were used in a completely randomized design in five treatments and three replicates (12 birds per replicate). the treatment...

one experiment was conducted with a total of 2000 broiler breeders (lohman strain) at 74 weeks of age, which lasted for 10 weeks. birds were randomly assigned to two dietary treatments varying in dietary crude protein (cp). the reduced-cp diet had dietary cp level approximately 1.5 percentage units lower than the control (15.5 vs 14.0%). by supplementing 0.13 and 0.1% of dl-methionine and l-hcl...

an experiment was conducted to determine the dietary digestible lysine requirement of male and female broiler chickens (arian) during the period from 6 to 21 days post-hatching. an amino acid-fortified basal diet containing corn and soybean meal as intact protein sources provided 20 % cp, and 3200 kcal amen / kg. in this experiment 150 male and 150 female chicks were allocated on the basis of b...

this experiment was conducted to evaluate the effects of using of zizaphora (thymyus valgaris), peppermint (lamiaceae menthapiperita), menta pulagum (oreganum valgare) medicinal plants on performance, egg quality, blood and immunity parameters of laying hens. this experiment was conducted in a completely randomized design with 288 of hy line (w-36) laying hens in 8 treatments and 3 replicates (...

one of the most important oilseed plants in iran is rapeseed. seed quality is affected by deterioration and aging during storage. the purpose of this study was to evaluate the roles of various chemicals on the recovery of germination characteristics in deteriorated seeds of rapeseed. in this study, one commercial brassica napus cultivar (okapi) was used. this experiment had two parts. in the fi...

laser is one of the sources that induce a biological effect in higher plants. the positive effect of laser on some crops has been proved. this research was carried out to study the effect of laser radiation on the accumulation of proline in spring wheat (triticum aestivum cv. kavir) under different nacl treatment levels. semi-coherent red beam, infrared beam and one-second harmonics of neodymiu...