Abstract
The effect of soil moisture and tillage depth was studied based on some mechanical properties for type tillage machine (moldboard plow) and soil physical characteristics wene tested two soil moisture levels of 10-12%and 12-14% and three levels tillage depth of 14,16 and 18 cm. The experiments were conducted in a factorial experiment under a randomized complete block design with three replications. The results showed that the soil moisture 10-12 % was significantly better than the soil moisture 12-14% as while tillage depth at range 14cm was significantly superior to the other two levels 16 and 18 cm in all studied conditions. The results showed fuel consumption of 11.348 and 10.777 L.ha-1 , slippage percentage of 9.291 and 9.111 % power losses due to slippage of 2.689 and 2.414 kW, field efficiency of 68.358 and 68.967 %, drawbar power 12.226 and 12.001kw and specific resistance 9.045 and 8.553 N.cm-2 for soil moisture 10-12% and tillage depth 14 cm , respectively.
Highlights
A tractor is an engineering vehicle designed to deliver at a high tractive effort or torque at deferent speeds, for the purposes of the machinery used in agriculture such as plows and planters etc
Many studies have been conducted to measure draft and power requirements of tillage implements under various soil conditions [16] .The coefficient of pull was about 16.6% of the draft force was directed towards cutting the soil and 83.4% was consumed in pulverization of soil particles
I The tillage depth of 18cm has the highest fuel consumption which required of 12.860 L.ha-1, the lowest fuel consumption and 1:1by depth of 14 cm has riquired of 10.777 L.ha-1
Summary
A tractor is an engineering vehicle designed to deliver at a high tractive effort or torque at deferent speeds, for the purposes of the machinery used in agriculture such as plows and planters etc. Draft and power requirements are important in order to determine the size of the tractor that could be used for a specific implement. Many studies have been conducted to measure draft and power requirements of tillage implements under various soil conditions [16] .The coefficient of pull was about 16.6% of the draft force was directed towards cutting the soil and 83.4% was consumed in pulverization of soil particles. A well planned tillage practice provides a favorable environment, suitable for better seed germination and effective plant growth. It protects and maintains a strong soil structure to reduce soil erosion [8]. The results revealed that all the soil physical properties i.e., soil moisture content, bulk density, porosity, penetration resistance, mean weight diameter, hydraulic conductivity and rate of infiltration were significantly improved with tillage consisting [15]
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