Mohamed Gomaa ABO-GABIEN, Ahmed Rezk ATAWIA, Hamed El-ZAABALAWY Mahmoud El-BADAWY, Sherif Fathy El-GIOUSHY, Saber Mahmoud BAKEER; Soil remediation for improving the growth of “Aggizi” olive trees under salt stress conditions; Advanced Materials and Technologies Environmental Sciences; 2021:5(1): 320-336
Olive is a traditionally important crop grown in South Sinai, where soil and water salinization may occur. The use of soil remediation approaches may improve the tolerance of plants to salt stress. The present study focuses on the soil application of magnetic iron (MI) and/or potassium humate (KH) to “Aggizi” olive trees. Ten-year-old trees grown in sandy loam soil were subjected to MI (0, 500, 750 and 1000 g / tree) and KH (0, 50, 75 and 100 g/tree). Vegetative growth, productivity, total chlorophyll, proline content and leaf mineral content were monitored. In present study, MI and/or KH caused an increase in vegetative growth parameters, productivity, total chlorophyll and leaf mineral content and a decrease in proline content and, sodium and chloride content. Interactions between the highest levels of MI (750 or 1000 g per tree) and KH (75 or 100 g per tree) increase the salt tolerance of “Aggizi” olive trees.