Influence of INM on sugarcane productivity and soil fertility under Indo-Gangetic plain

RAJINDER PAL; ONKAR SINGH; GULZAR S SANGHERA; R K GUPTA

doi:10.56093/ijas.v91i5.112987

Authors

RAJINDER PAL Regional Research Station, Punjab Agricultural University, Kapurthala, Punjab, India
ONKAR SINGH Regional Research Station, Punjab Agricultural University, Kapurthala, Punjab, India
GULZAR S SANGHERA Regional Research Station, Punjab Agricultural University, Kapurthala, Punjab, India
R K GUPTA PAU, Department of Soil Science, Ludhiana, Punjab

https://doi.org/10.56093/ijas.v91i5.112987

Keywords:

Cane and sugar productivity, Integrated nutrient management, Nutrient status, Sugarcane

Abstract

A field experiment was conducted during 2016-17 at Punjab Agricultural University, Regional Research Station, Kapurthala, Punjab, India with nine treatments comprising various combinations of farmyard manure (FYM), biofertilizers and different levels of chemical fertilizers in a randomized block design (RBD). Our results demonstrated that application of FYM @ 20 t/ha with soil test based application of nutrients recorded significantly highest number of millable canes of 134.3 thousand/ha and number of shoots (142.2 thousand/ha) at 150 DAS. However, cane length, cane diameter, single cane weight, cane yield and sugar yield were statistically at par with either application of 100% RDF plus FYM @ 20 t/ha or with the soil test based application of nutrients along with biofertilizers and 10 t/ha of FYM. With 20 t/ha of FYM and chemical fertilizer, the build-up of organic carbon content, N, P, K, Zn, Fe, Cu and Mn were significantly higher than the treatments containing either 10 t of FYM/ha or no manure. Application of FYM or biofertilizers or both along with RDF or STB nutrient application resulted in 12.8 to 17.9% higher cane yield, resulting in additional net returns of ₹ 20592 to 45230/ha as compared to recommended dose of inorganic fertilizers alone. Our study showed that higher cane and sugar productivity and economic returns can be achieved by applying either 20 t of FYM or 10 t of FYM along with bio-fertilizers.

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