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INTEGRATED NUTRIENT MANAGEMENT IN SWEET SORGHUM (Sorghum bicolor (L.) Moench) IN SANDY LOAM SOILS (ALFISOLS)

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Title INTEGRATED NUTRIENT MANAGEMENT IN SWEET SORGHUM (Sorghum bicolor (L.) Moench) IN SANDY LOAM SOILS (ALFISOLS)
 
Creator SESHAGIRI, G
 
Contributor MASTHAN REDDY, C
 
Subject sorghum, yields, bacteria, confectionery, farmyard manure, nutrients, vermicomposting, sugar, fertilizers, harvesting
SWEET SORGHUM, Sorghum bicolor (L.) Moench, SANDY LOAM SOILS,ALFISOLS
 
Description A field experiment was conducted at S.V. Agricultural College Farm,
Tirupati campus of Acharya N.G. Ranga Agricultural University of Andhra
Pradesh, during kharif, 2010, to identify the suitable integrated nutrient
management practices for sweet sorghum in sandy loam soils.
The present investigation was laid out in a randomized block design
with three replications. There were nine treatments viz., 100% RDF
(80:40:40 N: P2O5:K2O kg ha-1) (T1), 75% RDF + FYM @ 5 t ha-1 (T2), 75%
RDF + FYM@ 5 t ha-1 + Azospirillum @ 5 kg ha-1 + Phosphorus
solubilising bacteria @ 5 kg ha-1 (T3), 50% RDF + FYM @ 5 t ha-1 (T4),
50% RDF + FYM @ 5 t ha-1 + Azospirillum @ 5 kg ha-1 + Phosphorus
solubilising bacteria @ 5 kg ha-1 (T5), 75% RDF + Vermicompost @ 2.5 t ha-1
(T6), 75% RDF + Vermicompost @ 2.5 t ha-1 + Azospirillum @ 5 kg ha-1 +
Phosphorus solubilising bacteria @ 5 kg ha-1(T7), 50% RDF + Vermicompost
@ 2.5 t ha-1 (T8), 50% RDF + Vermicompost @ 2.5 t ha-1 + Azospirillum
@ 5 kg ha-1 + Phosphorus solubilising bacteria @ 5 kg ha-1(T9).
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Among the integrated nutrient management practices studied, the
highest available N and K content in the soil as well as in the index leaves
was recorded with 100% RDF (T1) at flowering stage of sweet sorghum.
Application of 75% RDF + Vermicompost + Azospirillum + Phosphorus
solubilising bacteria (T7) was the next best treatment in recording available
N and K content in the soil as well as in the index leaves.
Among the integrated nutrient management practices tried, the
highest P percent in the index leaves at flowering stage was recorded with
75% RDF + Vermicompost + Azospirillum + Phosphorus solubilising
bacteria (T7) (0.090%), followed by 100% RDF(T1) (0.087%). Application
of 50% RDF + FYM (T4) (0.056%) recorded the lowest phosphorus content
in index leaves.
The highest concentration of Fe, Mn, Zn and Cu in the soil as well as
in the index leaves at flowering stage was recorded with 50% RDF + FYM
(T4). Application of 50% RDF + Vermicompost (T8) was the next best
treatment. The lowest available Fe, Mn, Zn and Cu were recorded with
100% RDF (T1) in the soil as well as in the index leaves.
The highest available major & micronutrients in the soil and as well
as in the index leaves at harvest were recorded with 50% RDF + FYM (T 4)
in sweet sorghum. The next best treatment was the application of 50% RDF +
Vermicompost (T8). While the application of 100% RDF (T1) recorded the
lowest available major & micronutrients in the soil as well as in the index
leaves at harvest of the crop.
The highest stature of growth components like plant height, cane
diameter, total fresh biomass, yield and economic returns were recorded
with 100 % RDF (T1) followed by 75% RDF + Vermicompost + Azospirillum +
Phosphorus solubilising bacteria (T7). The lowest plant height, cane
diameter, total fresh biomass, yield and economic returns were recorded
with 50% RDF + FYM (T4).
The highest total sugar index and commercial cane sugar yield was
recorded with 100% RDF (T1) than rest of the INM treatments tried. The next
best treatment was the application of 75% RDF + Vermicompost + Azospirillum
+ Phosphorus solubilising bacteria (T7). The lowest total sugar index and
commercial cane sugar yield was recorded with 50% RDF + FYM (T4).
 
Date 2016-05-31T14:26:07Z
2016-05-31T14:26:07Z
2011
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/66488
 
Language en
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY