IMPACT OF IRRIGATION INTERVALS, POTASSIUM SILICATE, AND CHITOSAN ON THE PRODUCTIVITY AND WATER RELATIONS OF SOME BARLEY VARIETIES GROWN IN SANDY SOILS IN EGYPT | ||
| Menoufia Journal of Soil Science | ||
| Volume 10, Issue 9, September 2025, Pages 145-164 PDF (1.16 M) | ||
| Document Type: original papers | ||
| DOI: 10.21608/mjss.2025.417262.1037 | ||
| Authors | ||
| Elsayed M. Ali* 1; A. S. Shehata2; M. S Mohamed3; Walid R. Nakhla .4; Amin M. E. Agwa4 | ||
| 1Water requirement Department and Field Irrigation Research Department, SWERI, Agricultural Research Center, Giza, Egypt | ||
| 2Soil Improvement and Conservation Research Department, SWERI, Agricultural Research Center, Giza, Egypt | ||
| 3Sandy and Calcareous Soil Department, Soils, Water and Environment Research Institute, Agricultural Research Center, Giza, Egypt | ||
| 4Barley Department, Field crops Research Institute, Agricultural Research Center, Giza, Egypt | ||
| Abstract | ||
| Barley is one of the four top cereals produced worldwide. It was used as the first human food crop in the past. Nowadays, it is used for animal feeding and some industrial drinking. The objective of this study is to investigate the effect of two irrigation intervals based on accumulative pan evaporation (APE) coefficients and the effect of foliar application of anti-transpiration substances, potassium silicate, and chitosan, on two barley varieties, Giza 132 and Giza 134. Water relations, growth, yield, and yield components, as well as chemical composition, were studied. Two barley cultivation seasons were carried out at the Farm of El-Ismailia Agricultural Research Station, Egypt, during winter 2022/2023 and 2023/2024. The results demonstrated that the actual evapotranspiration (ETa) for irrigation treatments varied between 1122.07 m3/f and 1586.76 m3/f in the first season and between 1152.27 m3/f and 1614.81 m3/f in the second season, respectively. Also, the split–split of combined analysis used for all parameters showed that increasing the irrigation from 1 APE to 2 APE significantly increased the morphological parameters, yield, yield characteristics, water use efficiency (WUE), and yield chemical composition (nitrogen, phosphorus, and potassium) uptake for the two studied barley cultivars. Moreover, the application of anti-transpiration significantly increased all the previous measurements compared to the control. Irrigation at 2 APE and chitosan for barley Giza 134 showed the highest significant values. Therefore, it is recommended to irrigate at 2 APE and to use chitosan with the barley Giza 134 cultivar in sandy soil under sprinkler irrigation in Northeast Egypt. | ||
| Keywords | ||
| Barley; actual evapotranspiration (ETa); potassium silicate; chitosan | ||
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