ANBAR JOURNAL OF AGRICULTURAL SCIENCES

Abstract

Field experiment was carried out during spring season 2008 at Muqdadiya (East of Baa,quba city), Silt clay soil complete randomized block designe in three replications were used to investigate the effect of three N levels (0, 100, 150 Kg N/ha.), Three boron levels (0 , 10 , 20 , Kg B/ha.) and two moisture levels (% 100 and % 75 of field– capacity in two times of irrigation interval, after loss of 60% and 80 % of available water to reduce the negative effect of the moisture tension on the sorghum plants (Engath variety).
The results showed that The second N level ( 100 Kg N/ha . ) decreased the negative effects of moisture tension on the efficient use of water, grainyield, biological yield and root dry weight as compared with the both of control and the high N ( 150kgN/ha. ) treatments.
The second B level ( 10 kgB/ha. ) decreased the negative effects of moisture tension on the total plant yield , and plant growth rate . However , water use efficiency in plant , mean grain yield , biological yield , vegetative dry weight , root dry weight and mean plant height increased by ( 48.49 % , 45.27 % , 33.3 % , 46.15 % , 7.30 % , 14.81 % ) respectively as compared with the control treatment .