دور الزراعة الحافظة في تحسين إنتاجية محصول القمح و خصائص التربة الكيميائية تحت ظروف الزراعة المطرية في المنطقة الجنوبية من سورية

الملخص EN

The field experiment was conducted in Jellin Research Station, during two consecutive growing seasons 2008/2009 – 2009/2010, in order to evaluate the role of conservation agriculture along with crop rotation in environments suffering from limited water resources.

The experimental design was split into plots and laid out according to Randomized Complete Block arrangement, with three replications.

Under conservation agriculture system, the plant height was significantly higher during the second growing season, , with crop rotation, in the durum wheat variety (Acsad1105) (85.00 cm).

Plant leaf area and flag leaf area were significantly higher during the second growing season, under conservation agriculture system, with crop rotation, and the durum wheat variety (Acsad1105) (239.2 and 38.30 cm2 respectively).

The average grain yield was significantly higher during the first growing season, under conservation agriculture system, with crop rotation, and the durum wheat variety (Acsad1105) (309.3 Kg .

Donnem-1).

Soil organic matter content was significantly higher during the second growing season, under conservation agriculture system (1.430%) in the top layer (0 – 10 cm).

Soil content of the N was significantly higher during the first growing season (0.4802%), however, soil content of P and K was significantly higher during the second growing season (18.66 and 448.4 mg .

Kg-1 soil respectively).

These results assure the importance of implementing conservation agriculture as an integrated cultural practices (No-till, permanent soil cover with crop residues, and crop rotation) to improve the productivity of wheat, and the chemical soil properties under dry farming system compared to conventional tillage system.