Author(s): Yogesh Kumar Kosariya, Surendra Jogdand and Virendra Manish Victor

Abstract: The present investigation was carried out at research farm of IGKV, Raipur, Chhattisgarh in the year 2018-19 and 2019-20. This experiment was carried out to optimize the following design and operational parameters. Planting material; three size of potato tubers (Round, oblong and long-oblong), independent parameters; Peripheral speeds (V₁, V₂, V₃), Drive wheels used (W₁, W₂, W₃), Angle of furrow opener (S₁, S₂, S₃), Dependent variables; Single percentage, Double percentage, Multiple percentage, Missing percentage, Damage percentage. The combined effect of peripheral speeds, angles of shovel and drive wheel sizes on seed rate for all round, oblong and long-oblong shapes were observed. The averages missing percentage for round shapes were varied from 1.49 to 2.02 %. Minimum missing percentage were observed as 1.49±0.07 % (V₁S₂W₁ or in T₁), 1.65±0.09 % (V₂S₁W₃ or in T₂) and 2.02 % (V₃S₃W₃ or in T₃). Damage percentage for round shapes was found minimum in T₂ or V₂S₂W₁ (0.92±0.15%) followed by T₁ or V₁S₂W₁ (1.30±0.23 %) and T₃ or V₃S₁W₂ (1.50±0.20%) respectively. The average ranges of damage percentage were 1.30 % to 1.63 %, 0.92 % to 1.05 % and 1.50 % to 1.75 % respectively. The average values of missing percentage for oblong shapes were found minimum in treatment combination V₁S₂W₁ or T₁ (1.28±0.05 %) followed by V₂S₂W₁ or T₂ (1.79±0.01 %) and V₃S₁W₂ or T₃ (2.08±0.21 %). The maximum damage percentage for oblong shapes were found in treatment combination V₃S₁W₂ or in T₃ (1.82±0.06 %) followed by V₂S₃W₂ or T₂ (1.64±0.13 %) and V₁S₂W₂ or T₁ (1.44±0.28 %) respectively. It was observed that lowest missing percentages for long-oblong shapes were found in case of treatment combination V₁S₂W₁ or T₁ (1.56±0.11%) followed by V₂S₂W₂ or T₂ (1.93±0.09%) and highest % missing were obtained with V₃S₃W₂ or T₃ (2.28±0.17%) respectively. The lowest damage percentage for long-oblong shapes was found in case of treatment combination V₁S₂W₁ or T₁ (1.30±0.17%) followed by V₂S₃W₁ or T₂ (1.69±0.27 %). The highest tuber damage percentage was found with V₃S₁W₃ or T3 as 1.92±0.11 % comparatively.

DOI: 10.22271/maths.2023.v8.i4Sf.1095

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