The current study was carried out on six-year-old Murcott Mandarin trees (a naturally occurring mandarin hybrid from tangerine to sweet orange) budded on 'Volkamer' lemon rootstock grown in sandy soil under drip irrigation system in a private orchard located at El-Nubaria, Beheira governorate, Egypt, during the two successful seasons of 2018 and 2019. It was intended to look into employing several substances in nano form (such as calcium carbonate and kaolin clay) to protect murcott mandarin fruit plants from sunburn and to increase fruit output and quality. Four replicates of a randomized full block design experiment were used. Findings showed that overall, all treatments greatly reduced fruit juice acidity and sun scales while increasing the number of murcott mandarin fruits per tree, fruit weight, yield (kg/tree), yield (ton/feddan), total soluble solids and decreasing sugars by % in comparison to the control over the 2018 and 2019 research seasons. Trees treated with 3% kaolin showed a higher, considerably increased yield over both seasons.