كليدواژه :
درصد ماده خشك , دور آبياري , عملكرد خشك غده , مرحله رشدي , سيب زميني
چكيده لاتين :
To study the effect of different irrigation intervals on the yield and plant characteristics of potato (Solarium tuberosum L.), a field exoeriment was carried out in split plot arrangements using randomized complete block design with three replications at research field station, faculty of agricultural, the university of Urmia, in 2008 growing season. Experimental treatments were included irrigation intervals at four levels: 6 (I0), 10 (Ij), 14 (12 )and 18 (I3) day assigned to main plots, and growth stages at two levels: 50% emergence to 50% flowering (GS1) and 50% flowering to physiological maturity (GS2) randomized in sub-plots. Results showed that tuber fresh yield, tuber dry yield, mean of tuber fresh weight.plant"l, stem diameter, plant height, tuber size and dry matter at 1%, and the number of stem and relative water content in 5% probability level were affected by different irrigation intervals. However, irrigation intervals had no significant effect on mean of tuber dry weight.plant"1, specific weight and cell membrane stability. Significant difference was also observed between the growth stages for stem diameter, plant height and cell membrane stability. Interaction effect between irrigation intervals x growth stages was not significant on any traits except for stem diameter and plant height. It was concluded that irrigation intervals had a significant effect on plant characteristics of potato, but growth stages had no effect on these traits.
