Integrated Nutrient Management in Maize (Zea mays L.)
Loading...
Date
2013
Authors
Priya, Swati
Journal Title
Journal ISSN
Volume Title
Publisher
MPUAT, Udaipur
Abstract
A field study entitled “Integrated Nutrient Management in Maize (Zea
mays L.)” was conducted during Kharif 2012 in the Long Term Fertilizer
Experiments initiated in Kharif, 1997 at the Instructional Farm of the Rajasthan
College of Agriculture, Udaipur. The soil of the experimental site was sandy clay
loam in texture slightly alkaline in reaction, medium in available nitrogen and
phosphorus, while high in potassium, sulphur and zinc. The experiment consisted of
12 treatments comprising of chemical fertilizers, organic manure, Azotobacter biofertilizer
and their combinations, viz., 100 % NPK, 100 % NPK + Zn, 100 % NPK +
Zn +S, 100 % NPK + S, 100 % NPK + Azotobacter, FYM 10 t ha-1 + 100 % NPK (-
NPK of FYM), 100 % NPK + FYM 10 t ha-1, FYM 20 t ha-1, 150 % NPK, 100 % NP,
100 % N and control. These treatments were evaluated under randomized block
design (RBD) with four replications. Maize (PEHM-2) was taken as test crops.
The results of the present investigation reflects that the growth of maize crop
in terms of plant at harvest, LAI at 45 and 60 DAS were maximum by applying 100
% NPK + FYM 10 t ha-1 while chlorophyll content at 45 and 60 DAS were under the
influence of 150 % NPK. The study also revealed an increase in dry matter
accumulation 180.16, 149.84 and 54.85 percent at 30, 45 and 60 DAS, respectively,
over control. The crop attained highest CGR (21.74 and 25.42 g m-2 day-1,
respectively) between 30-45 and 45-60 DAS and RGR (0.067 and 0.037g g-1 day-1)
respectively, between 30-45 and 45-60 DAS when fertilized with 100 % NPK +
FYM 10 t ha-1 which was significantly superior over rest of the treatments. The maize
plants exhibited maximum values of yield components viz. grain weight cob-1, 1000-
grain weight and shelling percentage by applying 100 % NPK + FYM 10 t ha-1.
Highest maize grain, stover and biological yield (4.03, 6.04 and 10.07 t ha-1) were
obtained by applying 100 % NPK + FYM 10 t ha-1 followed by 150% NPK. Similarly maximum N, P, K, Fe, Cu, Mn content and uptake was recorded by
use of 100 % NPK + FYM 10 t ha-1. However, highest S content in maize grain and
stover and uptake in stover and total uptake was recorded with 100 % NPK + S + Zn
but maximum S uptake in grain was obtained by use of 100 % NPK + FYM 10 t ha-1.
The maximum Zn content was obtained by application of 100 % NPK + Zn and
uptake by application of use of 100 % NPK + FYM 10 t ha-1. Integrated use of
chemical fertilizers and manure increased available N, P, K, S, Zn, Fe, Cu, Mn, Ca
and Mg content of the soil
The study revealed that soil enrichment with 100 % NPK + FYM 10 t ha-1
resulted in highest net returns of ` 32968 ha-1and maximum B/C ratio (1.54).
Description
Integrated Nutrient Management in Maize (Zea mays L.)
Keywords
null
Citation
Rriya and Kaushik, 2013