Efficacy Foliar Spraying of NPK Nano Fertilizer on Yield Attributes of Wheat

Nano fertilisers significantly enhance crop growth, yield, and quality parameters in agriculture, enhancing nutrient use efficiency. The present study investigated the effect of NPK nano-fertilisers' foliar application on the attributes and yield of two wheat genotypes in semi-arid land conditions of North Sinai. The experiment was laid out in a split-split plot design within a randomized complete block design with three replications. An area of 240 m² was plowed and divided into two blocks for each wheat genotype, Sakha-95 and Ismalia-1 (main plots). The sub-plots were assigned to the different nano NPK foliar spray fertilization treatments coupled with varying percentages of conventional fertilization, as follows: T1: 100% conventional fertilization (control); T2: a foliar spray of nano NPK + 10% conventional NPK; T3: a foliar spray of nano NPK + 25% conventional NPK; T4: a foliar spray of nano NPK + 50% conventional NPK; T5: a foliar spray of nano NPK + 75% conventional NPK. The measured yield parameters were plant height (cm), number of spikes/m2, number of spikelets, number of tillers/m2, spike length (cm), number of kernels /spike, 100-grain weight (g), biological yield (ton/fed), grain yield (ton/fed) and harvest index(%). The results revealed that Ismalia-1 under 75% conventional NPK coupled with nano NPK foliar spray application at two ml/l was the superior practice for increasing all studied traits.