The effect of Arghavan biofertilizer on physiological, biochemical and yield parameters of sweet pepper (Capsicum annum L.)

Sweet pepper is a rich source of antioxidant compounds such as phenolic compounds, vitamin C and carotenoids. Environmental factors such as nutrition affect the growth, fruit yield, and fruit quality of pepper. This study was conducted in the form of a randomized complete block design with three replications and four fertilizer treatments. Fertilizer treatments include NPK 20:20:20 chemical fertilizer at the rate of 6 grams per 6 square meters, Arghavan biofertilizer at the rate of 72 ml per 6 square meters, and combined treatment of NPK chemical fertilizer and Arghavan biofertilizer at the rate of half of each two fertilizers and the control treatment. The obtained results showed that the combination of Arghavan biological fertilizer and NPK chemical fertilizer significantly increased the average values of vegetative growth traits such as plant height, stem diameter, fresh and dry weight of stem, fresh and dry weight of roots, relative water content, Leaf chlorophyll index, total leaf chlorophyll content, leaf carotenoid content, single fruit weight, and fruit yield compared to the control treatment and in many traits such as stem diameter, stem fresh and dry weight, root fresh and dry weight, single fruit weight, length And fruit diameter, fruit yield, chlorophyll index, carotenoid content were equal to chemical fertilizer treatment. By using the combination of Arghavan biofertilizer and chemical NPK, the physiomorphological indicators of bell pepper increased. Also, by using Arghavan biofertilizer, you can reduce the use of chemical fertilizer, which is a move in the direction of sustainable agriculture, releasing blocked food in the soil and reducing the environmental pollution.