Abdulghani Alkhaldi(1)*, Monier Alnabhan(2), and Yaser Almohammed(2)
(1) Cotton Research Administration, Aleppo, Syria.
(2) Center Hama for Agriculture scientific Research, Hama, Syria.
(*Corresponding author: Dr. Abdulghani Alkhaldi, Email: abdulgh64@gmail.com)
Abstract:
The main objective of all cotton producers in the world is the high quality and quantity of cotton fibers with minimum production cost and inputs. Cotton crop is (Gossypium hirsutum L.) one of the most important strategic crops in Syria, because of its multiple uses, and the large size of the population is working in it which it directly or indirectly. Therefore, The Cotton Research Administration following to General commission for agriculture research (GCSAR), has been working to finding varieties that achieve the highest early maturity percentage and yield. In addition to find reservist varieties that better characters.The aim this study to performance evaluation of cotton variety Aleppo 124 (new release) comparison with Aleppo 33/1 Under different fertilizer levels (+ 15%, according to fertilizer equation, -15% kg N /he) and under two irrigation levels (crop water requirements, 85% of water requirement). Field experiment was carried out at Hama center for agriculture scientific research follow to General commission for agriculture scientific research 2018, heavy clay soil, three replications .It was designed according to three split-split design. The results wear analyzed by Genstat 12 program. Results of the variance analysis (ANOVA) showed at significant level 5%, There are significant differences in nitrogen fertilization treatments, Cotton productivity increased 16% in the first treatment compared with the second treatment, and the productivity decreased 8% for the third treatment when compared to the second treatment. There were also no significant differences in productivity between the two irrigation treatments, the crop Productivity increased about 6.7%, for full irrigation (a virtual increase). The opening rate of walnuts on 13 September for the Aleppo 124 variety was twice more than that of Aleppo 33/1. The first fertilization treatment with chlorophyll number (middle and bottom of the plant) exceeded the second treatment by about 16% and the third treatment by about 37%, and the second fertilization treatment over the third about 18% .
Key words: Gossypium hirsutum L., Nitrogen fertilization, Irrigation water productivity, Aleppo 33/1, Chlorophyll (SPAD), Water requirements.
Full paper in Arabic: pdf