Galia Abdel Majeed(1) Abdel Naser Aldarir(2) Ahmad Shams Aldien Shaaban(3) and Abdallah AL Yosef*(4)
(1). Research Center of AL-Haskeh, General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria.
(2). Department of Rural Engineering, Faculty of Agriculture, University of Aleppo, Aleppo, Syria.
(3). Department of Biotechnologies Engineering, Faculty of Biotechnology, University of Aleppo, Aleppo, Syria.
(4). Research Center of Aleppo, GCSAR, Damascus, Syria.
(* Corresponding author: Dr. Addullah Al-Youssef, Email: firstname.lastname@example.org).
Received: 12/11/2018 Accepted: 16/12/2018
Drip irrigation and mulch is the best methods for increasing in cotton yield. A field experiment was implemented at the Research Station of AL-Hasaka governorate through 2011/2012, using randomized complete block design containing three levels of irrigation: the first treatment (A) was to irrigate 100% of water requirement, when the soil moisture went down to 80% of field capacity, with sufficient quantity of water to raise the soil moisture to field capacity, and the second treatment (B) was irrigated at the same time of (A) treatment, but with 75% of the quantity of A, and the third treatment (C) was also at the same irrigation time, but with half the quantity of (A). Four methods of covering was adopted; drip irrigation without mulching, drip irrigation with white, black plastic film and straw cover as Mulch, with three replicates. The goal of the research was studying the effect of mulch on soil moisture and salinity of the soil profile of cotton, the distance was 35 cm, 17.5 cm, under the drop pipe and its effects on production. The results showed that in mulch condition the soil moisture did not differ all over the pipe, contrary to drip irrigation without mulching treatment in which the soil moisture was higher under drop pipe particularly, while the soil moisture decreased whenever the distance went away from the pipe. Salinity of soil rised whenever soil moisture decreased. Concentration of soil salinity increased in upper section (0-30 cm) in low irrigation treatment (C) and drip irrigation without mulching treatment compared with mulching treatment. So, the production varied between 1019-7081 kg/ha for straw mulch under 50% moisture and white mulch with 100% moisture respectively.
Keywords: Drip irrigation, Salinity, Plastic mulch, Deficit irrigation, Soil moisture, Cotton.
Full Paper in Arabic: PDF