DEVELOPMENT AND FIELD EVALUATION OF AN OBLIQUE BLADE SUBSOILER AND COMPARISON OF PERFORMANCE WITH A CONVENTIONAL L-SHAPE SUBSOILER

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ESHAGH BEYGI A.; TABATABAEIFAR A.; KEYHANI A.R.; RAOUFAT M.H.

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Journal: JOURNAL OF AGRICULTURAL KNOWLEDGE Year:2002 | Volume:12 | Issue:3 Page(s): 67-81

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Title

DEVELOPMENT AND FIELD EVALUATION OF AN OBLIQUE BLADE SUBSOILER AND COMPARISON OF PERFORMANCE WITH A CONVENTIONAL L-SHAPE SUBSOILER

Author(s)

ESHAGH BEYGI A. | TABATABAEIFAR A. | KEYHANI A.R. | RAOUFAT M.H. | Issue Writer Certificate

Keywords

BENTLEGQ3

DRAFTQ4

OBLIQWELAGEQ4

PHYSICOCHARACTERSQ4

SUBSOILERQ3

Abstract

The main impediment in using conventional L-shape SUBSOILER is the high-energy requirment due to chisel point and landside. Also not every farmer has access to high power tractor. The main advantage in using BENTLEG plow is the low DRAFT requirement. There is a hope for improving DRAFT efficiency of conventional L-shape subsolier with removing chisel point and substituting a short cutting leg like BENTLEG plow. In order to achieve this goal a single leg SUBSOILER as the same as BENTLEG plow with rake angle of 15° and tilt angle of 30° but with shorter leg was constructed. This new SUBSOILER was called oblique blade SUBSOILER. Field experiments on performance of oblique blade and L-shape SUBSOILER were conducted in the Fars Agricultural Research Center. A randomized complete block design experiment with split split plot arrangement was conducted with three replications. The texture of soil was clay loam and three levels of moisture content (dry, medium and wet) and three different depths (250, 350 and 450 mm) were considered. The tractor forward speed was maintained at 3-3.5 km/h through out the experiments. Analyses of the results indicated that soil moisture content and working depth have significant effects at 1% level and subsoiling tool have no significant effect on DRAFT force, specific DRAFT and power consumption. All factors had significant effect on specific DRAFT force. The average DRAFT per unit width of conventional L-shape SUBSOILER was less than olique blade SUBSOILER because the width of soil failure in the surface was longer but soil disturbance in the oblique blade was greater than chisel point area. The study also revealed that subsoiling tools has no significant effect on the cumulative infiltration, cone indices and the cross-sectional area. Larger unit DRAFT demand of the oblique blade SUBSOILER, no good penetration in the dry soil, no good pulverizing and twisting in the shank are important disadvantages compared to L-shape SUBSOILER.

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APA: Copy

ESHAGH BEYGI, A., TABATABAEIFAR, A., KEYHANI, A.R., & RAOUFAT, M.H.. (2002). DEVELOPMENT AND FIELD EVALUATION OF AN OBLIQUE BLADE SUBSOILER AND COMPARISON OF PERFORMANCE WITH A CONVENTIONAL L-SHAPE SUBSOILER. JOURNAL OF AGRICULTURAL KNOWLEDGE, 12(3), 67-81. SID. https://sid.ir/paper/28704/en

Vancouver: Copy

ESHAGH BEYGI A., TABATABAEIFAR A., KEYHANI A.R., RAOUFAT M.H.. DEVELOPMENT AND FIELD EVALUATION OF AN OBLIQUE BLADE SUBSOILER AND COMPARISON OF PERFORMANCE WITH A CONVENTIONAL L-SHAPE SUBSOILER. JOURNAL OF AGRICULTURAL KNOWLEDGE[Internet]. 2002;12(3):67-81. Available from: https://sid.ir/paper/28704/en

IEEE: Copy

A. ESHAGH BEYGI, A. TABATABAEIFAR, A.R. KEYHANI, and M.H. RAOUFAT, “DEVELOPMENT AND FIELD EVALUATION OF AN OBLIQUE BLADE SUBSOILER AND COMPARISON OF PERFORMANCE WITH A CONVENTIONAL L-SHAPE SUBSOILER,” JOURNAL OF AGRICULTURAL KNOWLEDGE, vol. 12, no. 3, pp. 67–81, 2002, [Online]. Available: https://sid.ir/paper/28704/en

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