Water Stress on Cotton Plants as Affected by Potassium and Nano Chitosan-NPK Fertilizer | ||||
| Scientific Journal of Agricultural Sciences | ||||
| Article 21, Volume 3, Issue 2, December 2021, Page 236-250 PDF (889.24 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/sjas.2021.86571.1132 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Mohamed G. R. Sarhan  1; Samah Bashanday2; S. Abd El-Gayed3
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| 1Soil, Water and Environment Research Institute, Agricultural Research Center | ||||
| 2Department of soil and water, Faculty of Agriculture, Minia University | ||||
| 3Cotton Res. Inst., Agricultural Research Center, Egypt | ||||
| Abstract | ||||
| The present work was aimed to investigate using of potassium fertilizer as well as nano chitosan-NPK to alleviate the negative effect of water stress and its effect on cotton plant and some water relations. Two field experiments were conducted to study the possibility of using potassium fertilizer and nano chitosan-NPK to eliminate the negative impacts of water stress. The design of the experiment was split design plot, where number of irrigation treatments (6 and 9) were arranged in main plots, while potassium fertilization, i.e., K1= 96 kg K/ha as potassium sulphate, K2= 96 kg K/ha + twice foliar application of 2% potassium sulphate, K3= 96 kg K/ha + twice foliar application with 2% nano chitosan-NPK, K4= four times of foliar application with 2% potassium sulphate, and K5= four times of foliar application with 2% nano chitosan-NPK. The results obtained indicated that K3 followed by K2 which achieved the favourable values of plant height, first fruiting node, number of fruiting branches/plant, number of open bolls/plant, boll weight, seed index, lint percentage, seed cotton yield. Neither potassium fertilization nor irrigation number altered fiber properties. The data of the interaction showed the combined 96 kg K/ha as potassium sulphate + twice foliar application with 2% nano chitosan-NPK can diminish the negative effect of drought stress under deficit conditions, with higher seed cotton yield nearly equal to those obtained under full irrigation. It could be concluded that potassium fertilization and nano chitosan-NPK can improve cotton plant tolerance to water stress and enhance cotton productivity. | ||||
| Keywords | ||||
| Cotton; Potassium; Irrigation number; Nano chitosan-NPK; Foliar Application | ||||
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