Malarkodi M., Mithiladevi K., Gokila B.
The present investigation was carried out to evaluate the effect of long term nutrient managements on maize yield and soil fertility in the on-going century-old Permanent Manurial Experiment of Tamil Nadu Agricultural University, Coimbatore during 2020. The post-harvest soil after harvest of 169th crop of maize was analyzed for physicochemical and chemical properties. Results revealed that the continuous adoption of STCR-IPNS practice has achieved the highest grain yield of 8213 kg ha-1 which was on par with NPK + FYM treatment (7618 kg ha-1) besides sustaining yield to a greater extent. Application of inorganic fertilizers alone registered pH > 8.0 whereas the application of fertilizers and manures and application of manures alone registered pH < 8.0 in soil. Among the treatments, continuous application of NPK+FYM and STCR-IPNS improved the cation exchange capacity, organic carbon content and available nutrient status in the soil whereas unbalanced fertilization and unfertilized control decreased the most, resulted in degraded soil fertility. The results indicated that the combined application of inorganic and organic fertilizers maintained higher soil fertility.
Permanent Manurial Experiment, maize, SYI, SOC, nutrients
Cite this paper
Malarkodi M., Mithiladevi K., Gokila B. . (2021) Effect of Long Term Nutrient Managements on Maize (Zea mays L.) Yield and Soil Fertility Under Maize – Sunflower Cropping Sequence in an Alfisol. International Journal of Biochemistry Research, 6, 10-16