Effect of Spraying Nano-Nutrients on the Yield and Fruit Quality of "Barhee" Date palm

During the 2022, 2023, and 2024 seasons, the study was conducted on a 20-year-old Barhee date palm that was planted on a private farm in Al-Marashda area, Al-Waqf district, Qena Governorate, Egypt. The study's goal was to find out how nano nutrients affected palm date fruiting. Eight treatments were performed on the same palm and repeated ten times using one bunch for each repetition were used in the complete randomized block design experiment. The information from the current findings summed up as follows: In comparison to spray water (control), spray nano calcium - boron or nano potassium markedly improved fruit retention, bunch weight and fruit chemical contents. The findings demonstrated that raising the spray solution's concentration had no discernible effects. Therefore, using the lower concentration makes more sense from an economic standpoint. Based on the results of the study, it is necessary to spray 1 ml/L of nano calcium - boron or 2 ml/L of nano potassium three times after one, two, and three months of fruit set in order to achieve a high return through improved fruit quality and, consequently, increased market value.