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Performance of basmati rice under different transplanting date and weed management practices

KrishiKosh

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Title Performance of basmati rice under different transplanting date and weed management practices
 
Creator Vikram Kumar
 
Contributor Nandal, D. P.
 
Subject weeds, rice, planting equipment, developmental stages, grain, yields, planting, control methods, crops, fruits
 
Description A field experiment was conducted during kharif 2014 at students’ farm of CCSHAU, college of
agriculture, Kaul (Kaithal). The experiment consisted of four transplanting dates (June 15, July 5, July
25 and August 15) in main plots and six weed control treatments viz., oxadiargyl 100g/ha (PRE),
pretilachlor 1000g/ha (PRE), oxadiargyl 100g/ha (PRE) fb bispyribac-sodium 25 g/ha at 25 DAT,
pretilachlor 1000g/ha (PRE) fb bispyribac-sodium 25 g/ha at 25 DAT, weed free and weedy check in
sub plots. The 24 treatment combinations were tested in split plot design with three replications.
Based on research investigation it was observed that early transplanting dates (June 15 and
July 5) produced taller plant, higher tillers/m2 and crop dry matter accumulation at all growth stages.
Early transplanting produced significantly higher number of effective tillers/m2 along with higher
number of filled grain/ panicle than delayed planting (July 25 and August 15). The 1000-grain weight
was not affected by time of transplanting. The highest grain yield (4363 kg/ha) was recorded under
June 15 transplanting which was statistically at par to the grain yield (4058 kg/ha) obtained under July
5 transplanting. Quality parameters like hulling percentage, grain length and LB ratio were not affected
by time of transplanting. Early transplanting resulted lowest weed density, weed dry matter
accumulation by weeds at all growth stages. The weed control efficiency and visual control of weeds
were significantly higher under early transplanted crop. Early transplanting resulted in lowest uptake of
nitrogen, phosphorus, potassium by weeds which increased with delayed transplanting. Highest gross
income, net income and BC ratio was obtained under early transplanting.
Among the weed management practices tried, weed free check resulted in the highest values
of plant height, tillers/m2, crop dry matter accumulation, effective tillers/m2, grains length, filled
grains/panicle as well as grain and straw yield which were however, comparable to pre-emergence
application of oxadiargyl followed by bispyribac-sodium applied at 25 DAT and pretilachlor followed
by bispribac-sodium at 25DAT. The lowest density and dry matter accumulation as well as highest
WCE and visual control of total weeds were recorded with pre-emergence application of oxadiargyl
followed by bispyribac-sodium applied at 25 DAT. The highest B:C was registered with pre-emergence
application of oxadiargyl followed by bispyribac-sodium applied at 25 DAT.
 
Date 2016-10-13T14:44:13Z
2016-10-13T14:44:13Z
2015
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/80528
 
Language en
 
Format application/pdf
 
Publisher CCSHAU