تقييم الجدوى الاقتصادية لنظام الزراعة الحافظة ودوره في تحسين إنتاجية محصولي القمح والحمص في ظروف محافظة درعا

Abstract EN

A field experiment was conducted in Izraa Research Station affiliated to Arab Center for the Studies in Arid Zones and Dry Lands (ACSAD), during the growing seasons (2018/2019), in order to evaluate the performance of two wheat cultivars (durum wheat cv.

Acsad-1229 and bread wheat cv Acsad- 1133) under conservation agriculture (CA) comparing with conventional tillage system (CT) in rotation with chickpea crop (chap3).

The experiment was carried out according to randomized complete block design with split plots arrangement in three replicates.

The results showed significant differences among mean values of studied parameters, where CA surpassed significantly in number of grains/m², and grain yield (14682.33 grains/m², 4641.66 kg/ha respectively) as compared to CT (11005.10 grains/m², 4025.00 kg/ha respectively).

Beard wheat cultivar (Acsad-1133) recorded significantly highest mean values of grains/m², and grain yield (13762.78 grains/m2, 4483.33 kg/ha respectively) comparing to durum wheat cultivar Acsad-1229 (11924.65 grains/m², 4183.33 kg/ha respectively).

With respect to chickpea crop grown in bilateral rotation with wheat crop, the highest seed and biological yield were recorded under conservation agriculture system (1765 kg.ha and 5650 kg.ha respectively) compared with conventional system (1154 kg.ha" and 3716 kg.ha-' respectively).

CA system surpassed in rainwater us efficiency (13.11 kg.mm) over CT system (11.37 kg.mm''), the mean gross returns and net income for one hectare of wheat was higher under CA system (878707 and 714457 SP respectively) as compared to CT system (764625 and 564125 SP respectively).