تأثير الري الجزئي للمنطقة الجذرية في نمو و حاصل الذرة البيضاء (Sorghum Bicolor L)‎ 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 design (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 autumn season on 7 / 21 / 2019 and harvested on 11 / 20 / 2019.

The results showed that the Alternate Partial Root-Zone Irrigation treatment were better than other irrigation treatments in all field indicators, The vegetative stage gave the lowest results.

I3 S4 treatment were 5567.69 Cm2 plant-1, 7057.05, 4781,53 and 5241.92 kg.

ha-1 for leaves area, shoots and root dry mater, grain yield respectively