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EFFECT OF DIFFERENT FORMS OF UREA AND LEVELS OF NITROGEN ON GROWTH AND YIELD OF RICE

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Title EFFECT OF DIFFERENT FORMS OF UREA AND LEVELS OF NITROGEN ON GROWTH AND YIELD OF RICE
 
Creator KARUNA SAGAR, G
 
Contributor RAMA SUBBA REDDY, G
 
Subject EFFECT, DIFFERENT, FORMS, UREA, LEVELS, NITROGEN, GROWTH, YIELD, RICE
 
Description "Effect of different forms of urea and levels
of nitrogen on growth and yield of rice" was studied
on a sandy clay loam soil (Alfisol) at College of
Agriculture, Rajendranagar, Hyderabad during kharif,
1988-89. The experiment was laid out in a randomized
block design (factorial) with four forms of urea
(prilled urea, large granular urea , neem cake coated
prilled urea and neem cake coated largi granular urea)
at three levels (30, 60 and 90 kg N ha ) applied twice
(basal and split) with a control and replicated thrice
using the variety Satya (RNR 1446).
The growth characters (plant height,tiller~,
dry matter production), yield attributes (panicles m ,
filled grains per panicle and 1000-grain weight), grain
and straw yields were significantly iDtreased with
increase in N level from 30 to 90 kg ha . Harvest
index showed a decreasing tendency with increasing N
levels. The mean grain yield response to N was found
to be more at 30 kg N ha-1 (26.25 kg grain kg-1 N) and
it gradu2lly declined with_lncreasing levels (19.98 kg
grain kg N at 90 kg ha ). The nitrogen uptake by
rice crop increased significantly with increase in N
level.Application of NCLGU and NCPU resulted in
significant increase in most of the growth as well as
yield components compared with other forms of ure2 Application of NCLGU gave 541, 297 and 226 kg ha 1
higher grain yield over PU, NCPU and LGU respectively.
NCLGU recor~ed maximum grain yield response of ~1.68
kg grain kg N followed b~ 1 LGU (23.67 kg grain kg N),
NC (22.92 kg grain kg N) and PU (17.17 kg grain
kg N).
Nitrogen uptake and apparent recovery of added
nitrogen by rice crop was significantly higher by NCLGU
compared with other forms of urea.
Application of nitrogen in three equal splits
at basal, tillering and panicle initiation stages
resulted in significant increase in growth characters,
yield components as well as grain and straw yields
compared to basal application of nitrogen while harvest
index was not influenced. Nitrogen uptake, response to
nitrogen and recovery of nitrogen were maximum with
split application of nitrogen as compared to complete
basal application at transplanting.
A~£ng the treatments, split application of 90
kg N ha through NCLGU was better in increasing the
yields of lowland rice.
 
Date 2016-08-06T14:00:21Z
2016-08-06T14:00:21Z
1989
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/71276
 
Language en
 
Relation D3115;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD