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EFFECT OF INTEGRATED NUTRIENT MANAGEMENT ON SOIL PROPERTIES AND PERFORMANCE OF MAIZE (Zea mays L.)

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Title EFFECT OF INTEGRATED NUTRIENT MANAGEMENT ON SOIL PROPERTIES AND PERFORMANCE OF MAIZE (Zea mays L.)
 
Creator VAISAKHI, K. C.
 
Contributor MADHU VANI, P
 
Subject organic fertilizers, farmyard manure, nitrogen, maize, fertilizers, nutrients, yields, crops, livestock, grain
 
Description A field experiment entitiled “Effect of integrated nutrient management
on soil properties and performance of maize (Zea mays L.) was conducted
during kharif, 2011 on a sandy loam soil of Agricultural College Farm, Bapatla
with a view to study the performance of maize (variety: 30V92) in terms of yield
and nutrient uptake, besides the physical, physico- chemical, available nutrient
status and urease activity in soil.
The experimental soil was non saline, slightly alkaline in soil reaction
with low organic carbon (1.9 g kg-1) and available nitrogen (122 kg ha-1),
medium available phosphorus (40.4 kg ha-1) and high available potassium (392
kg ha-1). Except zinc, other micronutrients viz., iron, manganese and copper
were well above the critical limit. The experiment was laid out in a randomized
block design with ten treatments comprising of sole application of fertilizer
nitrogen at 100 and 125 per cent of recommended dose and each level of
fertilizer nitrogen was integrated with FYM and poultry manure at 25 and 50 per
cent of recommended nitrogen. The treatments were replicated three times.
Manures were applied to soil as per the treatments based on their nitrogen
content 10 days before sowing of seeds. Nitrogen, phosphorus and potassium
were applied through urea, single superphosphate (SSP) and muriate of potash
(MOP). Fertilizer nitrogen was applied at 100 and 125 per cent of recommended
dose (120 kg ha-1) as per the treatments in three equal splits. Recommended dose
of 60 kg P2O5 and 40 kg K2O ha-1 was applied uniformly to all the plots. Entire
quantity of phosphorus was applied as basal whereas potassium was applied in
two equal splits. The crop was harvested at 100 days after sowing. Plant and soil
samples collected at tasseling and harvest were analysed.
The results showed that the performance of maize was significantly
improved with increase in the level of nitrogen either alone or through
integration with FYM and poultry manure. Maximum drymatter production at
tasseling, yield components, yield and uptake of macro (N, P and K) and
micronutrients (Fe, Zn, Mn and Cu) were obtained in T10 which received 125 per
cent of recommended dose of nitrogen along with 50 per cent nitrogen through
poultry manure. Next best treatment was T8 which received same level of
fertilizer nitrogen along with 50 per cent nitrogen through FYM. However,
harvest index and shelling percentage was not significantly influenced by
different treatments.
The physical and physico-chemical properties viz., bulk density, pH, EC
and CEC were not significantly influenced by different levels of fertilizer
nitrogen along with FYM/ poultry manure. Significant variation in organic
carbon and available macro and micronutrient status in soil both at tasseling and
at harvest was observed between sole application of fertilizer nitrogen and its
integration with FYM/ poultry manure at higher level (50%). The highest
organic carbon at both stages was observed in T8 (125% RDFN + 50% N –FYM)
while, the highest available N, P2O5 and K2O, Fe, Zn, Mn and Cu were recorded
in T10 (125%RDFN + 50% N-PM). The urease activity of soils both at tasseling
and harvest was significantly influenced by the treatments and higher activity
was recorded in treatments which received higher levels of nitrogen through
fertilizer and FYM/ poultry manure. Significant positive correlation was
observed between soil properties and performance of maize. The maximum
gross returns and B:C ratio were obtained in T10 (125%RDFN + 50% N-PM)
which was closely followed by T8 (125% RDFN + 50% N –FYM), while the
lowest was observed in T1 (100% RDFN).
From the present study it can be concluded that under sandy loam soils of
Bapatla, recommended dose of 120 kg N ha-1 (T1: 100% RDFN) was not
sufficient to yield the maximum potential of the variety. Increasing level of
recommended dose of nitrogen along with organic manures (FYM/ poultry
manure) up to 175 per cent was proved to be highly beneficial in improving
performance of maize as well as soil properties
 
Date 2016-06-21T14:12:32Z
2016-06-21T14:12:32Z
2012
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/67614
 
Language en
 
Relation D9398;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY