إمكانية استخدام قصبات ذاتية الارتفاع في نظام الري بالرش الثابت تحت ضغوط مختلفة في زراعة محصول الذرة الصفراء

الملخص EN

A field experiment was conducted during growing season of 2021, to study the possibility of using fixed sprinkler irrigation (automatic risers) on zea maize yield under different pressures at Al-Raed Research Station located in the Akkarouf area on the Abu Ghraib-Shoala Road, one km north of the highway Baghdad-Anbar.

The soil texture was silty clay loam.

Two factors were used in the experiment, namely the type of risers, which included three levels: a normal riser, automatic riser with inner tube, and automatic riser with external tube, and the operating pressure with three levels of 1, 1.5 and 2 bar.

The following characters were studied, coefficient of moisture homogeneity, sprinkler service area, plant height and zea maize yield.

A randomized complete block design (RCBD) was used with three replications, and the least significant difference under probability 0.05 was used to compare the averages of the treatments.

The results indicated that the automatic riser external tube outperformed in obtaining the highest moisture homogeneity coefficient reached 82.8% , the highest value of the service area of the sprinkler 247.98 m2 and the highest value of the plant height 189.67cm and highest yield of the crop 6.38 Mg.

ha-1, As well as the superiority of the operational pressure of 2 bar outperformed in obtaining the highest value of the homogeneity coefficient of 82.15% , the highest value of the sprinkler service area 367.71 m2, the highest plant height 190.11 cm and the highest yield of the crop 6.46 Mg.

ha-1 while the two-way interference excelled between the self-propelled riser with an external tube and the operating pressure of 2 bar, the highest value of the coefficient of moisture homogeneity 85.35% , the highest value of the service area of the sprinkler 377.69 m2, the highest plant height was 194.67 cm, and the highest yield of the crop 6.89 Mg.

ha-1.