The nutritional requirements of maize are some the most studied factors in production this crop. It is known that nitrogen (N) major nutrient required by maize. Products based on microorganisms such as Azospirillum spp. can promote N fixation, providing yield gains. This study aimed to investigate agronomic efficiency and feasibility applying Grammy Crop® (Azospirillum brasilense-based ...

in order to identify the suitable rapeseed genotypes as second crop in paddy fields of guilan province, 14 rapeseed genotypes were grown in complete randomized block design with three replicates in a paddy fields experimental condition in rice research institute of iran, rasht during 2005-2007 cropping seasons. the results of the combined analysis of variance indicated significant difference am...

Identifying the reproductive consequences of insect migration is critical to understanding its ecological and evolutionary significance. However, many empirical studies are seemingly contradictory, making recognition of unifying themes elusive and controversial. The beet webworm, Loxostege sticticalis L. is a long-range migratory pest of many crops in the northern temperate zone from 36 °N to 5...