The effect of adding chelated zinc and vermicompost on the readiness of some nutrients

Abstract

A field experiment was conducted on yellow corn crop in the field of the College of Agriculture of the University of Babylon during the fall season 2022 to study the effect of adding chelated zinc and vermicompost and the interaction between them on the readiness of some nutrients according to the RCBD design. The experiment included two factors, the first factor is the addition of chelated zinc with three levels (0, 5, 10) kg H^-1 and the second factor is the addition of vermicompost with three levels (0, 10, 20) tons H^-1  and with three repetitions, so the number of experimental units became 27 units and then The seeds of yellow corn were sown, and the results were as follows:

• The addition of chelated zinc to treatment Z₂ gave the highest availability of the macronutrients nitrogen, phosphorus and potassium available in the soil and the available zinc also amounted to 46.78, 29.50, 219.95 and 7.18 mg kg^-1  soil sequentially.
• The addition of vermicompost to the F₂  treatment gave a higher availability of the nutrients in the soil represented by nitrogen, phosphorus and potassium, as well as an increase in the availability of zinc in the soil (mg^-1 soil).

The Zn₂F₂ binary interaction treatment excelled by giving the highest availability of nutrients in the soil represented by nitrogen, phosphorus, potassium and zinc as it reached 56.17, 35.92, 245.82 and 8.15 mg kg^-1 soil respectively