STUDIES ON THE INFLUENCE OF FOLIAR NUTRITION OF ZnSO4 AND GA3 ON COB DEVELOPMENT OF MAIZE (Zea mays L.)
Loading...
Date
2019-07-30
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
UNIVERSITY OF AGRICULTURAL SCIENCES, RAICHUR – 584 104
Abstract
A field experiment was conducted with an objective to Studies on the influence of
foliar nutrition of ZnSO4 and GA3 on cob development of maize (Zea mays L.) during
kharif 2018 at Farm college of Agriculture, Raichur. An experiment was laid out in
Factorial randomized complete block design with eighteen treatments including control.
The treatments were foliar nutrition of ZnSO4 at 0.25 per cent, ZnSO4 at 0.5 per cent and
ZnSO4 at 1.0 per cent and GA3 at 25 ppm and GA3 at 50 ppm sprayed at different leaf
stages (V5, V6, V5 & V6). The results revealed that foliar application of ZnSO4 at 1.0 per
cent in V5 stage recorded significantly higher plant height, total dry matter and dry matter
in different plant parts higher LAI, minimum number of days to attain 50 per cent silking
and physiological maturity, Other physiological parameters like higher photosynthetic
rate and NDVI were also observed in this treatment. Biochemical parameters like
Chlorophyll a, b and total, reducing and non-reducing sugar content in seeds, and starch
content in grains were also significantly increased under this treatment. Similarly, higher
grain yield and yield components were recorded with the foliar application of ZnSO4 at
1.0 per cent during V5 stage. However, it was on par with foliar application of ZnSO4 at
1.0 per cent at V6 stage. Maize growth, yield and yield components were increased when
foliar nutrition was given at early stages (V5 & V6 stage). It was concluded from the
results that foliar application of ZnSO4 @ 1.0 per cent during 25 to 30 DAS Increase
grain yield significantly in maize.
Description
Keywords
null
Citation
200