“WEED CONTROL STUDIES IN CARROT (Daucus carota L.)”
Loading...
Date
2005
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Indira Gandhi Krishi Vishwavidyalaya Raipur
Abstract
The present experiment was conduct at Research Farm, Department of Horticulture, IGAU, Raipur (C.G.) during winter season (November to January) of 2004-05 to find out the effect of weed management practices on growth, yield and economics of carrot as well as efficiency of selected herbicides against the weed population occurring in carrot. The experiment was laid out in randomized block design which four replications. The treatments comprised on ten weed management practices viz., Pendimethalin @ 1.0 kg ha-1 PE (T1), Pendimethalin @ 1.0 kg ha-1 PE + 1 HW at 30 DAS (T2) Oxyflourfen @ 0.2 kg ha-1 PE (T3) Oxyflourfen @ 0.2 kg ha-1 PE + 1 HW at 30 DAS (T4), Fluchloralin @ 1.0 kg ha-1 PPI (T5), Fluchloralin @ 1.0 kg ha-1 PPI + 1 HW at 30 DAS, (T6) Metribuzin @ 250 g ha-1 (T7) Metribuzin @ 250 g ha-1 PE + 1 H.W. at 30 DAS (T8), hand weeding twice at 25-40 DAS (T9) and weedy check (T10). Carrot variety “Pusa kesar” was grown as a test crop. Carrot was sown on 11th November, 2004 with a spacing of 40 cm x 10 cm. The crop was fertilized with 75:50:75 N:P2O5:K2O kg ha-1. The findings of this experiment revealed that various growth and yield attributes like plant height, number of leaves plant-1, root length, shoot length, fresh and dry weight of shoots and roots, root diameter, root : shoot ratio were significantly highest in hand weeding twice at 20 and 40 DAS, though it was at par with treatments involving herbicide alongwith hand weeding at 30 DAS i.e. Pendimethalin @ 1.0 kg ha-1 PE +1 HW at 30 DAS (T2), Oxyfluorfen @ 0.2 kg ha-1 PE + 1 HW at 30 DAS (T4), Fluchloralin @ 1.0 kg ha-1 PPI + 1 HW at 30 DAS (T6) and Metribuzin @ 250 g ha-1 PE + 1 HW at 30 DAS (T8).
Weed control efficiency was found maximum under hand weeding twice at 25 and 40 DAS. Subsequently higher weed control efficiency was also noted in treatments involving integration of herbicides and hand weeding operations. The results indicated that the highest gross return (Rs. 1,82,640 ha-1), net return (Rs.1,54,589 ha-1) and benefit : cost ratio (Rs.5.51) was obtained under HW twice at 25 and 40 DAS (T9), closely followed by Pendimethalin @ 1.0 kg ha-1 PE + 1 HW at 30 DAS (T2) with gross return, net return and benefit : cost ratio of Rs.1,75,280 ha-1, Rs.1,47,098 ha-1 and 5.22, respectively. On the basis of one year investigation, the farmers can opt for two hand weeding at 25 and 40 DAS or can apply Pendimethalin @ 1.0 kg ha-1 PE + 1 HW at 30 DAS to enhance the productivity and profitability of carrot in Chhattisgarh plains. The above weed management practices not only gave maximum weed control efficiency but also fetched highest benefit : cost ratio.
Description
Keywords
Citation
97 p.