Author(s):

SU Kakade, JP Deshmukh, ND Parlawar, MS Solanke and SS Thakare

Abstract: The field experiment was conducted at AICRP Weed Management field, Department of Agronomy Department, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola during three consecutive Kharif season of the year 2015-2016, 2016-17 and 2017-18. The experiment was laid out in Randomized Block Design with three replication having fourteen different treatments to study the bio-efficacy of pre and post emergence herbicides with cultural practices on weed control, growth and productivity of turmeric. The results revealed that all the weed control treatments significantly reduced the weed population and weed biomass when compared with unweeded control. The hand weeding (25, 45 and 75 DAP) recorded significantly lower weed count, dry matter accumulation and WCE of 94.45% followed by integrated weed management treatments of metribuzin 0.7 kg/ha PE followed by straw mulch 10 t/ha fb one HW which recorded lowest weed population and weed dry weight at harvest and WCE of 58.35%. Lower weed index value (3.41) was associated with the treatments Pendimethalin 1 kg/ha (0-5 DAP) fb straw mulch 10 t / ha (10 DAP) fb one HW (75 DAP). Integrated weed management practices resulted in increase of rhizome yield over the weedy check. Maximum rhizome yield was observed in weed free treatment (22.51 t/ha), while among the IWM treatments application of pendimethalin 1.0 kg/ha (0-5 DAP) fb straw mulch 10 t / ha (10 DAP) fb one HW recorded higher rhizome yield (21.72 t/ha) which was closely followed by metribuzin 0.7 kg / ha fb straw mulch (10 DAP) fb HW (21.60 t/ha) and atrazine 0.75 kg / ha (0-5 DAP) fb straw mulch (10 DAP) fb HW (21.37t/ha) being par with each other. Due to higher rhizome yield, highest monetary returns of Rs. 277024 /ha was registered under pendimethalin 1 kg/ha (0-5 DAP) fb straw mulch 10 t / ha fb one HW with B: C ratio of 4.20 highest than 3 HW at 25, 45 and 75 DAP. (3.35). The findings of present investigation conclusively inferred that, integrated use of either Pendimethalin 1 kg/ha or by Metribuzin 0.7 kg / ha (0-5 DAP) fb straw mulch 10 t / ha (10 DAP) fb one HW (75 DAP) as adjudged very effective for weed control and for attaining the highest productivity and profitability in turmeric.

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