Research Article
Maryam Niakan1*, Mahmood Darvi
Abstract
In this research effect of Eucalyptus camaldulensis L. leaves compose as biotic stress in ratio 0,( control), 4 and 8% (w/w) with soil and drought as abiotic stress include 25% and 10% of soil saturation capacity on growth parameters of Sorghum were studied. Sorghum bicolor var. Speed feed seeds were planted under pots condition in photoperiods 21 ± 1 ºC and 14– h light /10 –h dark. 30 days after planting were separated root from shoot and growth parameters were determined. The results showed that length, fresh and dry weight of root and shoot, number and area of sorghum leaves to application of decompose of Eucalyptus leaf in ratio 4%and 8% with soil were significantly decreased. Also mild and sever stress of drought also reduced growth parameters in root and shoot of Sorghum in comparison to control . Our data showed the growth reduction in Sorghum is more severe by Eucalyptus leaf decompose as biotic stress in comparison to drought stress as abiotic stress.