International Journal of Ecology and Environmental Sciences

International Journal of Ecology and Environmental Sciences


International Journal of Ecology and Environmental Sciences
International Journal of Ecology and Environmental Sciences
2020, Vol. 2, Issue 4
Fertilizer prescription equations for targeted yield of soybean (Glycine max l.) in Vertisol of Telangana, India

T Prabhakar Reddy, A Madhavi, T Srijaya, Pradip Dey

A field experiment was conducted for three years during kharif, 2017-18 to 2019-20 at the Regional Sugarcane and Rice Research Station, Rudrur, Nizamabad district of the Professor Jayashankar Telangana State Agriculture University, Telangana State, under All India Coordinated Research Project on the soil test crop response correlation. The experiment was conducted in “two-phases”. In the first phase soil fertility gradient was developed by dividing the experimental field into “three strips” and applying graded doses of fertilizers in them and growing of exhaust crop maize. In the second phase, i.e. next season main crop soybean was raised as per the programme. Response to selected combinations of “three-levels” of vermicompost (0, 2.5 and 5 t ha-1), “four-levels” of nitrogen (0, 30, 60 and 90 kg ha-1), four levels of phosphorus (0, 30, 60 and 90 kg ha-1) and four levels of potassium (0, 20, 40 and 60 kg ha-1) at different fertility levels of soybean was studied. In the present investigation, the total seed yield ranged from 1089 to 2834 kg ha-1. The nutrient requirement for production of one quintal of soybean seed was found to be were 5.53 kg nitrogen, 0.67 kg phosphorus and 2.89 kg potassium. The percent contribution of nitrogen, phosphorus and potassium was 31.84, 33.48 and 11.27 from soil, whereas from chemical fertilizer it was 68.27, 33.13 and 75.96 and conjoint use of chemical fertilizer with vermicompost, it was 11.81, 3.57 and 9.08, respectively. With the help of these data fertilizer recommendations at different yield targets and soil test value can be calculated. Findings from present study can successfully be utilized as an effective guide for efficient and balanced fertilizer recommendations for the larger parts of Vertisols of Telangana state and other parts of India having similar agro-climatic conditions and soils.
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How to cite this article:
T Prabhakar Reddy, A Madhavi, T Srijaya, Pradip Dey. Fertilizer prescription equations for targeted yield of soybean (Glycine max l.) in Vertisol of Telangana, India. International Journal of Ecology and Environmental Sciences. 2020; 2(4): 621-625.