الاستهلاك المائي لمحصول الذرة البيضاء (Sorghum Bicolor L.)‎ تحت ظروف الري الجزئي للمنطقة الجذرية في تربة جبسية

الملخص EN

A field experiment was carried out to study the effect of partial root zone irrigation on growth and yield of sorghum (Sorghum bicolor L.) in a gypsifereous Soil , at the experimental station of the college of Agriculture, Tikrit university, located at 34°40 49 and 43° 38 40 longitude and 129m above sea level.

The experiment was conducted with a Randomized complete Block Pesign (RCBD).

The Irrigation treatments Included Conventional Irrigation, Fixed Partial Root-Zone Irrigation and Alternate Partial Root-Zone Irrigation (I1 , I2 , I3).

were applied during one of the four growth stages, which are the emergence phase, the vegetative phase, the flowering stage and seeds development (S1 , S2 , S3 , S4).

Sorghum seeds (var.

Inkath) were sown during the autumn season on 7 / 21 / 2019 and harvested on 11/20/2019.

The results showed that water consumption of the sorghum was 754.3, 629.0, 609.7, 706.3 and 694.3 mm.season -1 highest for full irrigation, prd irrigation in emergence, vegetative, the flowering and seeds development stages respectively.

I3 S2 treatment were highest, 0.94 kg m-3 In comparison with anther all treatments.Mean of full irrigation were highest 1.43 m-3 kg-1 In comparison with anther all treatments