EFFECT OF FOLIAR APPLICATIONS OF NANO ZINC AND BORON ON THE GROWTH, YIELD AND QUALITY OF SWEET CORN (ZEA MAYS L.)

Abstract

The experiment was conducted at Research farm of IAS, SOADU, Odisha during rabi 2023-24. It was laid out in RBD, consists of eight treatment combinations with replicated thrice in Inceptisols to study the impact of foliar spray of nano zinc and Boron on the growth, yield and quality of sweetcorn (var. Sugar-75). The results revealed that significant difference in plant height and chlorophyll content which was highest in T6 (two foliar spray of nano zinc@0.4% and boron@0.3% with 75% N) at 75 and 90 DAS. Significantly grain yield was varied from 48.07 to 79.22 q ha-1 at different treatment combinations. Highest yield was found in T6 treatment which was 64.8 % over control, 24 % over the conventional ZnSO4 with RDF and 18.1 % over T8. Similarly, the stover and cob yield varied from 68.51 to 109.25 q ha-1 and 85.65 to96.46 q ha-1 respectively. Harvest Index (HI) was found highest in T6 (0.42) and lowest in control (0.31). The protein and carbohydrate were found to be lowest in control and highest in T8 i.e 9.89 and 20.82 % respectively.