Effect of several types of farmyard manures on germination and vegetative growth of canola (Brassica napus L.) cultivars in laboratory condition

Fertilizer application management, especially farmyard manure, is one of the most important parts of canola (Brassica napus L.) production. In this study, the effect of farmyard manure extracts on germination characteristics and vegetative growth of canola cultivars in laboratory condition, were studied in Ramhormoz. Treatments were included eight canola cultivars (Hayola 50, Hayola 76, Hayola 308, Hayola 401, Hayola 420, Hayola 4815, Dalgan and Safi 6) and farmyards manure extract included poultry, sheep and cattle fertilizers extract in 50% volume with control treatment (distilled water). Results showed that effects of farmyard manure extract on germination and growth seedlings of canola was significant at 1% probability level. The highest coefficient of germination velocity related to cattle fertilizers (0.11) and control (0.1175) treatments. Beginning of germination in sheep fertilizers extract treatment (2.833) compared to control (1.292) was faster and the most end of germination was observed in cattle fertilizer extract treatment (11.58). Poultry fertilizers extract was inhibitory effect on germination and other attributes of canola. In general, it was concluded that poultry fertilizer compared to sheep and cattle fertilizers, had negative effect on all traits.