Effect of different fertilizer source and corm density on yield, vegetative organ and photosynthetic pigments of saffron plant (crocus sativus L.)

Understanding of the factors importing quantity and quality of saffron plant to obtain desirable performance is important. Among these factors is use of different fertilized and corm densities. To study the effect of corm density and urea fertilizer as well as bio fertilizer nitroxin on the performance, vegetative organ, and photosynthetic pigments of saffron plant, a research was conducted in randomized complete blocks design in a field located in Davoodabad, Gharchak. Treatments included three levels of corm densities (60, 120, 180corm per m2) and four levels of fertilizers: control, urea fertilizer (150kg.ha) nitroxin bio fertilizer (5 L.ha) as well as urea nitroxin (75 kg.ha) and nitroxin (2.5 L.h). The results showed that all treatment had significant effects on all traits at 1% cultivation of high density of saffron corms (180m2) had cumulative positive effect on all traits but leaf length. It should be noted that the interactive effect of fertilizers and corm density on most of traits was significant. The maximum number of flowers per corm planting density of 180 per square meter and fertilizer use Nitroxin with the 64.97 and the least number of flowers per corm density of 60 per square meter and not using fertilizer with an average of 3.30 goals per square meter, respectively. The highest and lowest of 2.93 and 0.74 respectively kilograms of yield per hectare were achieved in treatments D3F3 and D1F1.