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Effect of Conservation Tillage and Crop Residue Management on Soil Physical Properties and Crop Productivity of Wheat

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Title Effect of Conservation Tillage and Crop Residue Management on Soil Physical Properties and Crop Productivity of Wheat
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Creator V P Chaudhary,
Monalisha Parmanik
, Anurag patel
 
Subject : Mean weight diameter (MWD), Geometric mean diameter (GMD), Soil organic carbon, Microbial bio-mass carbon, Bulk density, Infiltration rate (IR)
 
Description Not Available
Field experiments were carried out on a sandy loam (Typic -Usochrept) soil in hot dry semi-arid subt tropical climate of Meerut to study the effect of tillage systems and crop residue mulching with fertilizer
Application doze combination on soil physical properties (aggregate size distribution, mean weight diameter (GMD) and bulk density), chemical properties (soil organic carbon (SOC) and soil microbial biomass carbon(MBC)) and it s plant growth parameters and yield continuous wheat (Triticum aestiumL. emend. Fiori
& Paol) system during 2008-11. Two tillage systems and four crop residue mulching
with recommended doze fertilizer (RDF) combination were factorially combined in a split plot design with three replications and each plot size was 5 length and 4 m width. The tillage systems (main plots) were: no tillage (NT) and conventional tillage (CT), i.e. 4 harrowing +1 tine cultivating and one patella. The rice crop residue used as mulching and fertilizer combination treatments (sub-plots) consisted of four M – No mulch + recommended dose of fertilizer
(RDF), M2- Mulch (6 t ha)-1 + recommended dose of fertilizer (120:60:40 kg NPK) (RDF), M -
Mulch (0) + 125% recommended dose of fertilizer (RDF), M - Mulch (6 t ha-1 ) + 125% recommended
dose of fertilizer (RDF). Results revealed that ZT had higher MWDs and lower GMDs than CT at both
depths. The MWDs decreased with increase in soil depth for both tillage (T) treatments as well as rice crop
residue mulching (M) treatments. The bulk density were not affected
significantly (P < 0.05) by tillage 3systems and crop residue mulching × recommended dose of fertilizer
(RDF) application at both 0-15 and 15-30 cm soil depth. Tillage system did not inf luence significantly on
SOC at both depths but MBC influenced significantly (P=0.05) at upper depth (0-15 cm). The SOC and
MBC were affected significantly (P = 0.01) by crop residue mulching with combination of recommended
fertilizer application rate at upper depth (0-15 cm) but 15-30 cm, SOC was significantly at P = 0.05 but
MBC had no significant different. The SOC was significantly higher value in ZT (5.61 g kg -1) than CT(4.69 gkg-1) at 0-15 cm soil depth. The SOC and MBC were recorded in ordered M4>M2>M>M1 which
had significant difference value at P = 0.01.The zero tillage showed significantly (P = 0.01) higher infilt ration
rate (1.96 cm h-1) than conventional tillage. The infiltration rate (IR) was
significantly (P = 0.01) higher in M-1(2.15 cm h-1) followed by M (1.97-cm h-1). Tillage system inf luenced
significantly (P = 0.05) on shoot dry weight and total biomass accumulation
at all three growth stages i.e. ear emergence (EE), BGF and dough stages, however, on LAI at dough
stage, it significant at P = 0.01. The growth parameters (LAI, shoot dry
weight, root dry weight and total biomass accumulation) were influenced significantly (P = 0.01) by
residue mulching with combination of recommended dose of fertilizer (RDF) at beginning grain filling
(BGF) and dough stages, however, at ear emergence stage, it was only significant (P = 0.01) on shoot dry
weight and total biomass accumulation. The higher grain yield value was observed in zero tillage as compared
to conventional tillage. The highest grain yield of wheat cropwas observed in M4 (5.33 t ha-1) and
followed by M2 (5.21 t ha-1), M 3(5.15t ha-1) and M1 (4.62 t ha-1) but difference among the treatments was
non significant.
Not Available
 
Date 2020-06-04T10:00:03Z
2020-06-04T10:00:03Z
2017-01-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/36858
 
Language English
 
Relation Not Available;
 
Publisher Not Available