Usage of Nano-Particle NPK to reduce the amount of mineral fertilizers in ‘Crimson seedless’ grapevines

Abstract

Fertilization through the addition of nano-fertilizers, added in very small quantities as a foliar spray on the vine canopy, has become one of the most effective methods in order to reduce the amount of mineral fertilizers. Therefore, this experiment was conducted on a 7 year-old "Crimson seedless" grapevines for successive seasons 2021 and 2022 to determine the optimum rates of "Nano-NPK" fertilizer to replace the "NPK" conventional fertilizer. Three concentrations of "Nano-NPK" were used as foliar application in three concentrations, 30, 200 ppm), Nano-NPK (400, 60, 400 ppm) and Nano-NPK (800,120, 800 ppm) replacing 50% of conventional fertilizer NPK compared to the soil addition of the conventional fertilizer NPK at (25, 25, 100 kg/Feddan) as a control. Our results showed that Nano-NPK fertilizer at (800, 120, 800 ppm) induced a significant increase in yield parameters, along with the chemical and physical characteristics of the vegetative growth as compared with the lower concentrations but there are no significant differences between it and the control. Thus, application of Nano-fertilizers was very effective in accelerating the clusters growth stages along with replacing the mineral fertilizers

Response of Kigelia africana (Lam.) Benth Transplants to Nano-NPK and Nano-Chitosan under Salinity Stress

“…(Hassan et al 2021), wheat (Hajihashemi and Kazemi 2022), and grapes (Aazami et al 2023). This may be attributed to the fact that the nano fertilizers have a smaller diameter than the pores of the plant cell, and nanoparticles easily permeate through the plant cell wall and reach the plasma membrane (Mohamed et al 2022). Recently, more studies on the combined application of nano-NPK and nano-chitosan on different crops were published with a focus on the productivity of French bean (Hasaneen et al 2016), wheat (Abdelaziz et al (2016, potato (Elshamy et al 2019), coffee (Ha et al 2019), field crops (Ashraf et al 2022), and intercropped maize-soybean (Abou El-Enin et al 2023).…”