Study the effect of different rates of nitrogen and zinc on yield and quality of canola in saline condition
2011
Bybordi, Ahmad
A greenhouse experiment was carried out at the East Azarbyjan Agronomy and Natural Resources Research Center for two (2008-2010) years. The experimental design aimed to study the response of canola to different nitrogen and zinc fertilizer levels under two doses of salinity stress. The obtained results from two years showed that nitrogen increased seed yield while there was no significant differences between two nitrogen levels. Zinc application had not significant effect on seed yield. Conversely, salinity decreased seed yield and yield components dramatically. Plant height increased on account of nitrogen and zinc application. Nitrogen fertilizer application improved seed number per silique and 1000-seed weight over two years. Among yield components only number of seed per silique was affected by zinc and increased in the first year. Oil percentage decreased due to nitrogen, zinc and salinity in the first year but zinc had not significant effect on oil in the second year. Salinity stress increased glucosinolate and protein content. Other treatments had not significant effect on these traits. Salt stress induction decreased N, P, K, Ca and Mg content while increased Na, Cl and Na/K ratio.
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