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DIRECT AND RESIDUAL EFFECT OF PHOSPHORUS NUTRITION AND BIOFERTILIZER IN SOYBEANPOTATO CROPPING SYSTEM

KrishiKosh

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Title DIRECT AND RESIDUAL EFFECT OF PHOSPHORUS NUTRITION AND BIOFERTILIZER IN SOYBEANPOTATO CROPPING SYSTEM
 
Creator SUSHMITA MUNDA
 
Contributor B. G. Shivakumar
 
Subject soybeans, yields, crops, potatoes, biofertilizers, inorganic acid salts, planting, sowing, fungi, biological development
 
Description T-8472
A field experiment was carried out during 2008-09 and 2009-10 at the research farm of the Indian
Agricultural Research Institute, New Delhi to study the direct and residual effect of phosphorus
nutrition in soybean-potato cropping system as influenced by sources and levels of phosphorus in
conjunction with biofertilizers applied to soybean and succeeding potato. The soil of the
experimental field was alluvial sandy loam, slightly alkaline in reaction (pH 7.2 and 7.4 in 2008
and 2009, respectively), with 252 kg/ha available N, 17 kg/ha available P and 170 kg/ha available
K in 2008 and with 242 kg/ha available N, 17.9 kg/ha available P and 186 kg/ha available K in
2009.
The treatments consisted of 2 sources of phosphorus viz. diammonium phosphate (DAP)
and rock phosphate (RP), 2 levels, viz. 50% and 100% of recommended dose of phosphorus
(RDP), 2 levels of Biofertilizers, viz. PSB and VAM along with one absolute control and only biofertilizers
to soybean in kharif and 3 levels of phosphorus viz. 0, 50% and 100% in the form of
single super phosphate to succeeding potato in rabi. A total of 10 treatments in soybean were tried
in randomized block design replicated thrice. The undisturbed plots of soybean were divided and
three levels of phosphorus were applied to potato, thus in all 30 treatment combinations were tried
under split-plot design with treatments to soybean as main plots and phosphorus levels to potato as
sub-plots, replicated thrice. Soybean (var. ‘DS 9814’) was sown in 45 cm rows using a seed rate
of 75 kg/ha in July. Potato (var. ‘Kufri Badshah’) was planted using 3000 kg/ha tubers after the
harvest soybean in the first fortnight of November.
In soybean, application of 100% RDP as RP along with biofertilizers was highly effective
to the growth attributes, viz. Plant height (44.7 cm at maturity), plant biomass (10.95 g/plant),
number of nodules (38) etc. And yield attributes viz. Number of pods per plant (35.8), seeds per
pod, pod yield etc. Irrespective of P sources, growth and yield parameters responded significantly
to application of biofertilizers when P was applied at full dose. Combined application of fertilizers
and bio-fertilizers improved the quality parameters, viz. Protein content and oil yield.
Phosphorus fertilization to preceding soybean had significant residual effect on growth
and yield parameters of potato. Application of biofertilizers to preceding soybean was found to be
better than no application of biofertilizers. Growth and yields (21.4 t/ha) were higher with
application of full dose of P to potato. Phosphorus uptake was higher in biofertilizers applied
treatments to preceding soybean crop than the rest. Full dose of P as DAP along with biofertilizers
recorded maximum P uptake (9.69 kg/ha) by the potato crop. Full dose of P as DAP along with
bio-fertilizers to preceding soybean and 100% RDP to potato recorded maximum starch content
(23%) and starch yield (463 kg/ha).
 
Date 2016-11-23T11:19:28Z
2016-11-23T11:19:28Z
2011
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/87188
 
Format application/pdf
 
Publisher IARI, DIVISION OF AGRONOMY