Evaluation agronomic traits of canola affected by organic and chemical nitrogen fertilizer

摘要

Nitrogen is one of the most important element in crop production, so nitrogen deficit occurs almost every whereexcept when the fertilizer is added to plants, therefore a field experiment was carried out a factorial split plotarranged in randomized complete blocks design with four replications in two planting date(PD) at one year.Main plots consisted of two level of organic manure, (OM1) and (OM2) and five level of chemical fertilizer, (CF1),(CF2), (CF3), (CF4), (CF5) and sub plots consisted of two cultivar(C) (Okapi and Zarfam). Results of composedvariance analysis showed that organic manure had significant effect on seed yield and means comparisonshowed highest seed yield was observed from application of organic manure with 2165 kg/ha and in comparisonbetween organic manure levels application of organic manure had highest oil percent with 40.4 percent thispositive effect was attributed to indicate importance of application of organic manures, in continuance resultshowed third level of chemical fertilizer application had highest harvest index with 38.33 percent that caused toobserved highest seed yield with 2492 (Kg/ha).