Phosphorus Fertilizer Level Related with Nano-Chitosan Concentration and their Influence on Growth, Yield and Chemical Constituents of Hot pepper

Abstract

Two field experiments were done at a privet farm in Mansoura, Dakahlia Governorate, Egypt, during the two summer consecutive seasons of 2019 and 2020. The research objective of this work was to examine the influence of foliar application of nano-chitosan at different concentrations (0, 25, 50 and 100 ppm) under different phosphorus fertilizer level (0, 16, 32 and 48 kg P2O5/feddan) on hot pepper "cv. Hyffa" productivity. The influence of phosphorus fertilizer, nano-chitosan and their interaction treatments were determined on plant growth, yield components, some chemical constituents. Phosphorus fertilization at 48 kg P2O5/feddan significantly increased hot pepper growth (plant height, number of branches per plant and total plant dry weight), yield components parameters (fruit set %, fruit length, fruit diameter, fruit yield per plant and early yield and total yield per feddan) and chemical constituents (total chlorophyll, total soluble solids, vitamin C, total nitrogen%, total phosphorus % and potassium %) as well as capsaicin content in fruits compared to control and the lowest levels under study. In addition, increasing nano-chitosan concentrations gradually increased all measured parameters to reach the highest values with 100 ppm concentration as foliar spray compared to the other treatments under study. Generally, the results of this work demonstrated that foliar applications of 100 ppm nano-chitosan could help enhance hot pepper (Capsicum annuum, L.) growth and productivity as well as content of alkaloids (determined as capsaicin) when interacted with 48 kg P2O5/feddan under Dakahlia Governorate conditions.

Nanomaterials as an alternative to increase plant resistance to abiotic stresses

“…For example, growth-promoting rhizobacteria and their metabolites were nanoencapsulated using SiNPs and carbon nanotubes to improve pistachio micropropagation, where the use of Pseudomonas fluorescens VUPF5 and Bacillus subtilis VRU1 nanocapsules significantly enhanced the root length, shoot length, fresh weight, and proliferation ( Moradipour et al., 2019 ). Moreover, a foliar application of nano-chitosan under different phosphorus fertilizer levels on hot pepper increased plant height, the number of branches per plant, total plant dry weight, fruit set, fruit length, fruit diameter, yield, total chlorophyll, total soluble solids, vitamin C, total nitrogen, total phosphorus, total potassium, and capsaicin content ( Helaly and EL-Bauome, 2020 ).…”

Enhancing Vegetative Growth by Adding Phosphorus, Silicon, and Citric Acid to Pepper Plants Cultivated in Plastic Greenhouses

“…Several studies have emphasized the importance of phosphorus in stimulating vegetative and floral growth in general [5,6,7,8]. Superphosphate fertilizer has been shown to increase pepper plant height, dry weight, and yield [9]. There is another type of beneficial elements that have not been extensively studied, including silicon, which is absorbed in quantities similar to most major elements, leading to depletion of available silicon in the soil solution.…”

Impact of Bacillus subtilis, Trichoderma spp. and The Bioproduct Top Perfect on Meloidogyne incognita Infecting Pepper Plants

“…Pepper, Capsicum annuum L is a vital vegetable crop that is cultivated extensively all over the world (Zayeda et al, 2013). The total cultivated area in the open field and under plastic-houses during 2019-2020 reached almost 65240 Faddans in Egypt with a total production of 39000 tons (Helaly and EL-Bauome, 2020).…”