evaluation of nitrogen fertilizer management effects on yield in flowering stage of rapeseed in gorgan region
نویسندگان
چکیده
to evaluate the effects of nitrogen management at yellow budding stage on seed yield with using nitrogen nutrition index (ratio of nitrogen concentration in the plant to optimum concentration), of rapeseed farms in gorgan, an experiment was conducted as a nested model arranged in a complete randomized design (crd) in 2010. fifteen rapeseed fields were classified at three levels of management (optimum, middle, weak). during the experiment, questionnaires were completed by farmers for quantification of agricultural management. the results showed that levels of management are significantly difference from nitrogen nutrition index (nni) (p
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عنوان ژورنال:
به زراعی کشاورزیجلد ۱۵، شماره ۱، صفحات ۱۶۳-۱۷۴
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