Growth, Yield and Economics of sweet corn (Zea mays L) as influence by different Integrated Nutrient Management practices

Abstract

Field experiment was conducted at Department of Agronomy, experimental farm at
Annamalai University during 2013. The main objective of the study was to find out the effect
of organic & inorganic fertilizer on seed yield of sweet corn (zea mays L.). The experiment was
studied with split plot design having two levels of biofetilizer, FYM and phosphorus as main
plot treatments along with five levels of nitrogen as sub plot treatment. Application of organic
matter had significantly increased height & all crop growth parameters and 5.75% more
grain yield with application of FYM@10 ha-1 Seed inoculation with Pseudomonas gave
significant increase in growth and yield parameters and grain yield increased to the tune of
8.24 per cent.
Application of phosphorus significantly increased plant height at all crop growth stages and
higher grain yield recorded by 6.74 per cent than Control. Seed yield of sweet corn as well as
growth and yield attributes were significantly increased due to varying levels of nitrogen. The
higher grain yield (1633 kg ha-1) and straw yield (5783 kg ha-1) was recorded with 120 and
160 kg N ha-1 respectively. The net realization of Rs. 30525 & 29255 ha-1 was recorded with
101 FYM ha-1 Seed inoculation gave 31485 Rs. ha-1 and application of P2O5 at 0 and 50 kg.
P2O5 ha-1 gave 6.70% and 4.43% higher grain and straw yield, respectively. The significant
higher straw yield were recorded with varying levels of Nitrogen, but highest net return was
obtained with 120 kg nitrogen per hectare, The straw yield were increased significantly with
increasing levels of nitrogen from 0 to 160 kg per hectare.