No abstract

The experiment was conducted at Agricultural Research Station, Jalgaon, Maharashtra during Kharif season of 2018 to 2020 to study the effect of pre and post emergence herbicide on growth and yield of sesame. The experiment was laid out in a Randomized Block Design (RBD), replicated thrice  with eight treatments viz., T1 Weedy check, T2 Weed free, T3 Pendimethalin 30EC (pre–emergence)@0.50kg a.i./ha., T4 Quizlofop-ethyl  5 % EC (post emergence) 50g a.i/ha.at 20 DAS., T5 Sodium Acifluorfen16.5% + Clodinafop-propargyl 8% (premix) @ 100 g.a.i./ha.at 20 DAS., T6 Pendimethalin 30EC (pre–emergence)@ 0. 50 kg a.i./ha.+ Hand weeding at 20DAS., T7 Pendimethalin 30EC (pre–emergence)@0. 50 kg a.i./ha.+ Quizlofop-ethyl  5 % EC (post emergence) 50g a.i/ha.at 20 DAS., T8 Pendimethalin 30EC (pre–emergence) @ 0. 50 kg a.i./ha.+ Sodium Acifluorfen16.5% +Clodinafop-propargyl 8% (premix) @ 100 g.a.i./ha. at 20 DAS.From the pooled results,it is concluded that  pre and post emergance herbicide for chemical weed management in sesame, the seed yield were found to be significant.The practice of the treatment T2 (weed free)  crop produced the significantly highest seed yield 607 Kg./ha, Net Monetory Returns Rs. 42730/- and B:C Ratio 2.93, over rest of treatment, followed by 523 kg/ha seed yield, Rs. 35873/- Net Monetory Returns and 2.77 B:C ratio by the treatment i.e. pre–emergence application of Pendamethalin 30 EC @ 0. 50 kg a.i./ha + Hand weeding at 20 DAS    was an efficient and economically feasible package to manage the weeds and realize better returns.

Soil survey was carried out during 2014 in Shirpur tehsil of Dhule district (M.S.), India by using global positioning system (GPS) and geographical information system (GIS). Soil samples were analyzed for pH, EC, OC, CaCO 3 and available micronutrients viz., Fe, Mn, Zn, Cu, B and Mo. The availability of macronutrients, micronutrients and their relationship with soil properties were also studied. The soil pH varied from 6.7 to 8.4 with mean value of 7.6 and indicated that slightly to moderately alkaline in reaction. The soil EC varied from 0.10 to 0.82 dSm-1 (mean 0.28 dSm-1) and indicated that 100 per cent soils are non-saline in nature. The organic carbon and calcium carbonate ranged from 3.9 to 8.2 g kg-1 and 7.0 to 17.75 per cent with mean value of 6.12 g kg-1 and 12.28 per cent, respectively. The soils of Shirpur tehsil are low to high in organic carbon and high to very high in calcium carbonate content. The available micronutrients Fe, Mn, Zn, Cu, B and Mo ranged from 1.19 to 14.8, 2.02 to 5.88, 0.13 to 1.58, 0.27 to 3.98, 0.16 to 1.48 and 0.06 to 0.39 mg kg-1 with mean of 4.09, 2.78, 0.71, 2.32, 0.61 and 0.18 mg kg-1 , respectively. The soils of Shirpur tehsil were deficient in available iron (49.76%), available zinc (33.82%) and available boron (27.05%). The available Fe, Mn, Zn, Cu and B showed negative significant correlation and available Mo showed positive significant correlation with pH. Available Mn and Cu showed positive significant correlation with organic carbon. A negative significant correlation of available Cu with calcium carbonate was observed.