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LONG -TERM EFFECTS OF MANURE AND FERTILIZERS ON SOIL FERTILITY AND PRODUCTIVITY OF RAINFED GROUNINUT (Arachis hYpogaea L•)

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Title LONG -TERM EFFECTS OF MANURE AND FERTILIZERS ON SOIL FERTILITY AND PRODUCTIVITY OF RAINFED GROUNINUT (Arachis hYpogaea L•)
 
Creator NARU BHASKAR REDDY
 
Contributor RANGANAYAKULU), C
 
Subject LONG -TERM EFFECTS OF IvlANURE AND FERTILIZERS ON SOIL FEHTILITY AND PRODUCTIVITY OF RAINFED GROUNDNUT (Arachis hypogaea L.)
 
Description Long tenn field investigation oh the effect of manure
and fertilizers on soil fertility and product~vity of rainfed
groundnut in red sandy loam soil (HaplustalE) was started during
kharif, 1981 and continued at Regional Agricultural Research
· Station, Tirupati of Andhra Pradesh Agricultural University.
Te.n treatments involving N, P, K and gypsun individually ~nd also in different combinations of. the same with lime ~nd zinc
sulphate apart fran control \f.ere imposed in four replications
following the randamized block design. Soil samples collected at G-15 and 15-30 em depth
initially and after fifth and tenth year of experimentation
were studied for different parameters. Pod yield and yield
attributing factors were assessed along with the plant
nutrient concentration and uptake for the tenth year of
cropping. Pod yield increased significantly with farmyard manure,
NP and other combinations of N, P, K, gyp~Hlm, lim~.~ and zinc
sulphate which ware at par. No additional response was realised
with potassium, gypsum, lime and zinc sulphate.RwJc:lrclinq uuil Eact.nrH, r.ont:inunu .. rnr~nurin'l and fer.t-. .1-
lization for ten years did not ~hange eith~r pH, ~C or organ~c
carbon. Available N increased in the treatment~::J with FYM and
in others which received N. overall depletion of available P
was noticed over ten years with less depletion in the treatments
which received P. Statistically, there was no change in water
soluble and non-exchangeable K. In general, the exchangeable
and available l< status of soil were significantly higher in the
treatments · which received potassium at surfar.e l~yer. However,
significant depletion of available K content was observed over
years of experimentation. No definite trend was obr-;erved in the
contents .of exch. Ca and Mg o.ver years of cropping. Available s
content" pro;;1ressively increased with the application of single
superphosphate, gypsum and zinc sulphate. Application of lime
has not incrt3asud the froe limo C"!ontont. of thE~ nnil whereas
depletion of available zinc was observed in the treatments not
received zinc but ito increase was -noted on application.Investigat.i on of plant materia 1 for nutrient comentration
and uptake revealed, significant increase in the content
and uptake c£ P, K, Ca and s and in the- uptake of N, Mg and zn
was observed in FYM, NP and the other combinations of N, P, K,
. .
gypsum, lime and zinc sulphate treatments which were at par and
found to agree with the pod yields. Among the nutrient ratios
stu:iied w index leaf, the ratio of N/PS w the range of 8.57 to
9.07 observed to be more favourable for higher yields. The ten
years study envisaged that there was no negative effect qf either
ma~ure or fertilizer use under ~oisture stress on the yield of
rainfed groundnut· in red sandy learns.
 
Date 2016-08-17T15:17:41Z
2016-08-17T15:17:41Z
1991
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/72830
 
Language en
 
Format application/pdf