Effect of the treatment method and spraying with nano-algae extract on productivity and quality of palm trees in new reclaimed areas

Abstract

This study was conducted during two successive seasons of 2022 and 2023 on Hayany date palm trees cultivar (Phoenix dactylifera L.) 12year old grown at the Desert Research Center station, Southeast Al Qantara, Sinai, Egypt, grown in silty clay soil at 7 x 7 m apart under drip irrigation system. Arranged in a randomized complete block design with three replicates. The aim of this research was to
investigate the effect of nano fertilizers with algae extract and application method on leaf minerals content, fruit quality and yield of Hayany date palm trees. Two fertilization methods Spraying and trunk injection were used to rationalization chemical fertilizers. The experiment included two application methods foliar Application and Injection with trunk used by three levels at 50,100 and 200ppm / palm tree from nano-algae extract and unsprayed trees (control). All treatments were applied twice, after pollination in 1st April of each season and one month later. The results indicated that the highest of the parameters, including leaf mineral contents, fruit yield parameters, fruit physical properties, and fruit chemical properties were found from trunk injection method at200 ppm with nano-algae extract of Hayany date palm trees were studied compared to other treatments in two studied seasons. Thus, fertilization Hayany date palm trees using trunk injection by 200 ppm /palm from nano-algae extract is recommended starting from twice, after pollination in 1st week of April of each season and one month later to improve leaf mineral contents, and productivity of date palm.