TY - JOUR ID - TI - Comparison between the performance of a movable boards ditch opener and conventional ditch opener in cultivated and uncultivated soils Part 1: The draft force AU - Shaker H. Aday شاكر حنتوش عداي AU - Yarub W. Al-Muthafar يعرب المظفر PY - 2018 VL - 31 IS - 1 SP - 85 EP - 92 JO - Basrah Journal of Agricultural Sciences مجلة البصرة للعلوم الزراعية SN - 18175868 AB - The draft force of the movable boards ditch opener (MB) was comparedwith that of the conventional ditch opener (CD). The parameters of the experimentswere three operating depths (30, 40 and 50 cm), three angles between the boards of MB(45, 60 and 75º), the angle of the boards of CD was constant (65º), three wings widthsof the foot of MB whereas, one share width (35cm) for CD and two soil types(cultivated and uncultivated soils). The texture of soils was silty clay. The resultsshowed that MB can penetrate the soil to the required depth easily and its draft forcerequirements were lower than that for CD for all operating depths, angle between theboards and in the cultivated and in uncultivated soils. Whereas, CD could not penetratethe soil more than 25cm in the uncultivated soil that its draft force higher than that forMB for operating depth of 30 and 40 cm and for all angles between the boards but thecontrary occurred with operating depth of 50cm. The draft force requirement of MBincreased slightly with the angle between the boards but it MB increased considerablywith increasing wings width of the foot. However, the wings of MB required less draftforce than the share of CD which its width was 35 cm (constant width). MB surpassedCD in the field performance, it required less draft force and it could penetrate the soilseasily.

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