Role of Conservation Agriculture in Increasing Wheat ‎Productivity and Soil Organic Matter Content in Southern ‎Region of Syria ‎

Manal Othman*(1)  Ayman Shehada AL-Ouda(1) and Muhammad Manhal AL-Zoubi(3)         

(1).Department of Field Crops, Faculty of Agriculture, Damascus University, Damascus, Syria.

(2). Administration of Water Resources, General Commssion for Scientific Agricultural Reseach GCSAR, Damascus, Syria.

(*Corresponding author: Eng. Manal Othman. E-Mail:

Received: 16/01/2020                               Accepted: 06/02/2020


The research was conducted at Izra’a Research Station, General Commission for Scientific Agricultural Research (GCSAR), during the growing seasons (2016/2017and 2017/2018), in order to evaluate the response of two durum wheat verities (Douma3 and Cham5) and two bread wheat varieties (Douma4 and Cham6) to Conservation Agriculture (CA) as a full package compared with Conventional Tillage system (CT) under rainfed condition using lentils (Variety Edleb3) in the applied crop rotation. The experiment was laid according to split-split RCBD with three replications. The average number of grains per square meter was significantly higher under conservation agriculture in the presence of crop rotation, when all the crop residues where left on the soil surface (Barley residues) in the variety Cham5 (3070 grain/ m2). The average of fertile to total tillers, 1000-kernel weight and grain yield were, significantly higher under conservation agriculture in the presence of crop rotation, of the variety Douma3 (71.27%, 33.549g, 4162 kg/ ha respectively ). soil organic matter content was significantly higher during the second and first growing seasons, under conservation agriculture, in plots in which crop rotation was applied, at the soil depth (0 – 20 cm) (0. 7483, 0. 6983%  respectively). The two varieties Douma3 and Cham6 are considered more responsive to conservation agriculture system in the southern region of Syria, because they recorded the highest grain yields (2561and 2385 kg/ ha respectively) compared with the other studied varieties (Cham5 and Douma4) (1951 and 1724 kg/ ha respectively).

Key words: Conservation Agriculture, Conventional Tillage, Crop residues, Crop rotation, Wheat, Organic matter.

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