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Evaluation of pre-plant and post Emergent Herbicides in Chilli+Onion+Cotton Intercropping system

KrishiKosh

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Title Evaluation of pre-plant and post Emergent Herbicides in Chilli+Onion+Cotton Intercropping system
 
Creator Rajesh.S.Kalasare
 
Contributor Ramesh.Babu
 
Subject Agronomy
 
Description A field study was conducted during kharif 2009 at Main Agricultural Research
Station, Dharwad, to study the evaluation of pre-plant and post emergent herbicides in chilli +
onion + cotton intercropping system under rainfed conditions in black soils. The experiment
was laid out in randomized block design with three replications.
Among the weed control treatments, pre-plant application (PPA) of oxyfluorfen @
0.15 kg ha-1 + post-emergent application (POE) of oxyfluorfen @ 0.15 kg ha-1 (POE) and
hand weedings (HW) at 30 and 60 days after transplanting of chilli (DAT) and PPA of
pendimethalin CS @ 650 g ha-1 + POE of oxyfluorfen @ 0.15 kg ha-1 and HW at 30 and 60
DAT recorded significantly higher chilli equivalent yield (74.3 q/ha and 65.8 q/ha,
respectively) and also recorded higher weed control efficiency (91.17% and 89.36%,
respectively) and lower weed index values (2.22% and 11.93%, respectively), compared to
farmer?s practice (three HW at 35-40 days interval) and weedy check.
The plant height and total dry weight of plants in these three crops were significantly
higher in treatments receiving the PPA of oxyfluorfen 0.15 kg ha-1 + POE of oxyfluorfen
0.15 kg ha-1 with HW at 30 and 60 DAT and PPA of pendimethalin CS @ 650 g ha-1)+
POE of oxyfluorfen @ 0.15 kg ha-1 with HW at 30 and 60 DAT compared to farmer?s
practice (HW at 35-40 DAT) and weedy check. These treatments were also superior with
higher net returns and B:C ratio (Rs.64057 , Rs.53599 ha-1 and 3.6, 3.1 respectively) over
farmer?s practice (Rs. 46482 and 3.0, respectively).
 
Date 2016-11-07T18:50:59Z
2016-11-07T18:50:59Z
2010
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/84311
 
Format application/pdf
 
Publisher UAS, Dharwad