Impact of different nano-forms of potassium on growth, yield and fruit quality of Zebda mango under deficit irrigation water strategy
1Pomology Department, Faculty of Agriculture, Cairo University, Giza, 12511, Egypt. 2Pomology Department, National Research Center, Dokki, Giza, 12622, Egypt.
DOI: https://doi.org/10.37855/jah.2026.v28i01.10
Full text PDF Irrigation water is a critical and key factor for the sustainable growing of mango in arid and semiarid regions. Thus, finding tools for saving irrigation water without harming productivity and the environment presents a major challenge for sustainable agriculture in this region. Therefore, this study aimed to evaluate the foliar application of nano potassium silicate (NPS), nano potassium citrate (NPC) and nano potassium nitrate (NPN) at concentrations of 0.1 and 0.2% during flower bud induction (mid-November), pre-flowering (mid-February), and full bloom (late March) on the growth and productivity of Zebda mango trees under different deficit irrigation regimes (100%, 85% and 70% of irrigation requirements, IR). The findings indicated that, decreasing IR from 100% to 70% IR resulted in a control treatment decline of 21.7% and 11.2% in the number of leaves, and a decrease of 24.5% and 27.63% in fruit set, for both seasons, respectively. Also, all Nano potassium forms enhanced vegetative growth and yield. NPS at 0.1% increased the number of leaves by 7.38 and 19.85%, fruit set% by 13.88 and 42%, fruit weight by 3.37 and 3.73%, fruit number by 13.48 and 16% and yield by 16 and 19.4% compared to the control for both seasons, respectively. Moreover, 0.1% NPS was effective in mitigate severe deficit irrigation (70% IR + 0.1% NPS) impacts by increasing the number of leaves by 16.63 and 22.37%, fruit number by 9.46 and 8.72%, and yield by 9.7 and 9.2% for both seasons compared to 70% IR, respectively.
