EFFECT OF DIFFERENT FORMS OF UREA AND LEVELS OF NITROGEN ON GROWTH AND YIELD OF RICE
KrishiKosh
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Title |
EFFECT OF DIFFERENT FORMS OF UREA AND LEVELS OF NITROGEN ON GROWTH AND YIELD OF RICE
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Creator |
KARUNA SAGAR, G
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Contributor |
RAMA SUBBA REDDY, G
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Subject |
EFFECT, DIFFERENT, FORMS, UREA, LEVELS, NITROGEN, GROWTH, YIELD, RICE
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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. |
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Date |
2016-08-06T14:00:21Z
2016-08-06T14:00:21Z 1989 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/71276
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Language |
en
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Relation |
D3115;
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Format |
application/pdf
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Publisher |
ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD
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