Effect of chemical and organic fertilizers on acid and alkaline Phosphatase activities in the Qazvin region

Soil phosphorus availability is mostly dependent on acid and alkaline phosphatase activities. The present experiment was carried out in a completely randomized design with four treatments and three replications in Qazvin soils under wheat cultivation. Treatments included: application of 100% phosphorus fertilizer based on soil test (TSP), municipal solid wastes compost (MSWC): 20 tons per hectare, sheep manure (SM): 20 tons per hectare, and control (without fertilizer). The results showed that the application of organic fertilizers significantly increased the activity of alkaline and acidic phosphatase compared to the TSP treatment. When MSWC and SM applied to the soil, alkaline phosphatase activity increased by 29.5% and 26.1% compared to the TSP treatment, respectively. All three fertilizer treatments increased the activity of alkaline phosphatase compared to the control. MSWC, SM, and TSP treatments increased activity of alkaline phosphatase by 62.6%, 58.5%, and 25.7% compared to control, respectively. The application of TSP fertilizer increased phosphorus uptake by 5.9 kg/ha compared to the control. These values ​​were 8.7 and 9.2 kg/ha for MSWC and SM treatments, respectively. According to the data, the application of organic fertilizers increased phosphatase activity and improved phosphorus uptake by wheat.