Hanan Almhemid*(1), Faraj Naoum(1), Abdulghani Alkhaldi(2), and Ahmad Aljomaa(2)
(1). Faculty of Agricultural Engineering, Univ. of Aleppo, Aleppo, Syria.
(2). Cotton Research Administration, General Commission for Scientific Agricultural Research, Aleppo, Syria.
(*Corresponding author: Hanan almhemid . E-Mail:hananalmhemid@gmail.com).
Received:11/07/2023 Accepted:30/07/2023
Abstract:
subsurface drip irrigation usage is considered of great importance, especially in dry and semi-dry regions that suffer from water scarcity and lack of water resources, as is the case in most cotton-growing areas in Syrian Arab Republic. Therefore, the aim of this research is to study the effect of the subsurface drip irrigation system on some productivity indicators and the efficiency of irrigation water use for cotton crop Aleppo 118 variety with different depths of irrigation pipes. The research was carried out during the 2022 agricultural season at Tal Hadya Cotton Research Station (Aleppo Governorate) affiliated to the Cotton Research Department – General Commission for Scientific Agricultural Research . By using two types of tubes (PT1, PT2) and at three different depths (15, 25, 35) cm, the experiment was designed according to the split-plot design. The results of the analysis of variance (ANOVA) at 5% level of significance for the yield characteristic showed that there were significant differences. That is high between the two irrigation pipes used, as the average yield of cotton for the first type (PT1) was 3002 kg/ha and for the second type (PT2) 5537 kg / ha. The results also showed that there were very high significant differences in the yield between the different pipe depths, where as treatment D2 excelled 25 cm depth of irrigation pipe) was significantly affected by the two treatments D1 (15 cm depth of irrigation pipe) and D3 (35 cm depth of irrigation pipe) by (49.8 and 29.8%), respectively. The results showed that there were highly significant differences in the efficiency of irrigation water use, in which that irrigation water use efficiency for the first type (PT1) was about 0.459 kg/m3 and for the second type (PT2) about 0.852 kg/m3. It can be concluded that the second pipe with the second depth (PT2 D2) was the highest in the yield per hectare of granulated cotton and the water use efficiency.
Keywords: Subsurface drip irrigation, Cotton, Yield, IWUE.
Full paper in Arabic: pdf