Vol. 11, Issue 5 (2022)

Author(s):
Mahendra Jajra, Dr. Amreen Hasan, Dr. Arun Alfred David, Dr. Tarence Thomas, Tarun Kumar and Indhu Pavithra

Abstract:
An experiment was conducted during Kharif season (July – October) 2021 to study the “Effect of different levels of Phosphorus and Zinc on Physico-Chemical Properties of Soil, Growth and Yield of Maize (Zea mays L.) Var. P – 3536” on crop research farm department of Soil Science & Agricultural chemistry. The experiment was laid out in Randomized Block Design having three levels of Phosphorus @ 0%, 50%, 100% and three levels of Zinc @ 0%, 50% and 100% respectively. The treatment combinations were replicated three times and allocated at random in each replication. The result shows that the application of different levels combination of Phosphorus and Zinc fertilizer increased growth, yield of Maize and improved soil chemical properties. However, some parameter of soil physical properties decreased. It was recorded from the application of Phosphorus and Zinc fertilizer in treatment T₉[ P @ 100% + Zn @ 100%] maximum Bulk density 1.25 Mg m^-3in0-15 cm and 1.26 Mg m^-3 in 15-30 cm, Particle density 2.25 Mg m^-3 in 0-15 cm and 2.26 Mg m^-3 in 15-30 cm,% pore space 75.14% in 0-15 cm and 74.28% in 15-30 cm, Water holding Capacity 48.59% in 0-15 cm and 46.97% in 15-30 cm, pH 7.13 in 0-15 cm and 7.02 in 15-30 cm, EC 0.41 dSm^-1 in 0-15cm and 0.40dSm^-1 in 15-30 cm,% Organic Carbon 0.903% in 0-15 cm and 0.890% in 15-30 cm, Available Nitrogen291.590 kg ha^-1in 0-15cm and 286.90 in 15-30cm kg ha^-1, Available Phosphorus29.68 kg ha^-1 in 0-15 cm and 28.78 kg ha^-1 in 15-30 cm, Available Potassium225.63 kg ha^-1 in 0-15 cm and 220.03 kg ha^-1 in 15-30 cm. It was also revealed that the application of Phosphorus with Zinc was excellent source for fertilization than fertilizers. The economy of different treatment concerned, the treatment T₉ provides highest net profit of Rs. 36,011 with Benefit Cost ratio 2.011:1