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STUDIES ON THE EFFECT OF NITROGEN AND BORON ON GROWTH AND YIELD OF SUNFLOWER (Helianthus annuus L. )

KrishiKosh

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Title STUDIES ON THE EFFECT OF NITROGEN AND BORON ON GROWTH AND YIELD OF SUNFLOWER (Helianthus annuus L. )
 
Creator LEELA RANI, P
 
Contributor MADANMOHAN REDDY, T
 
Subject STUDIES, EFFECT, NITROGEN, BORON, GROWTH, YIELD, SUNFLOWER
 
Description A field trial entitled "Studies on the effect
of nitrogen and boron on growth and yield of sunflower
(Helianthus annuus L.)" was conducted at College Farm,
Andhra Pradesh Agricultural University, Rajendranagar
during kharif, 1991. The treatments comp~ise91of four
levels of nitrogen (0, 40, 80 and 120 kg ha ) and 3
boron tr~itments, viz., NQ boron (B0 ) boron dusting@
2 kg ha (B1 ), boron sp!aying (0.4% borax solution
(B 2 ). The experiment was laid out in Randomised block
design with ·factorial concept and replicated thrice.
The test variety was APSH-II.
Levels of nitrogen favourably influenced the
growth characters, yield attributes and yield. Plant
height, dry matter production ~1re significantly
higher with N levels upto 120 kg ha in early stages
of crop growth (i.e., upto 60 DAS) whereas at later
st~ies significant increase was observed upto 80 kg N
ha ._1The stem girth, number of functional leaves
plant were significantly higher with higher levels
of N while the days to fifty per cent flowering was
reduced , signficantly. Yield attributes vi~l' head
diameter, number of filled grains head , seed
filli~i percentage, test weight, and oil 2£ntent were
increased significantly upto 120 kg N ha , whereas
seed , yield, oil yield and stalk yield were ~ignificantly
_ higher with N levels upto 80 kg N ha • The
volume weight decreased with increasing levels of
nitrogen.
Boron application did not influenced the
growth characters. However boron spraying treatment
(0.4%) enhrnced the test weight, number of filled
seeds head , filling percentage, seed yield and oil
yield signific.antly when compared to control ( B0 ) .
The uptake of nitrogen, phosphorus and potassium
was favourably influenced with increasing levels
of. nitrogen, whereas boron application did not exert
any influence on n~trient uptake.
 
Date 2017-01-20T10:22:44Z
2017-01-20T10:22:44Z
1992
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/97252
 
Language en
 
Relation D3939;
 
Format application/pdf
 
Publisher ANDHRA PRADESH AGRICULTURAL UNIVERSITY RAJENDRANAGAR, HYDERABAD