STUDY OF YIELD PARAMETERS OF TANDEM DISK

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KHOSRAVANI A.; RANJBAR I.; LOGHAVI M.

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Journal: JOURNAL OF AGRICULTURAL KNOWLEDGE Year:2001 | Volume:11 | Issue:2 Page(s): 67-77

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Title

STUDY OF YIELD PARAMETERS OF TANDEM DISK

Author(s)

KHOSRAVANI A. | RANJBAR I. | LOGHAVI M. | Issue Writer Certificate

Keywords

DRAFTQ2

SECONDARY TILLAGEQ4

TANDEM DISKQ4

MEAN WEIGHT DIAMETERQ4

Abstract

Among the SECONDARY TILLAGE implements, TANDEM DISK is used more than others. In this study the effect of two parameters including: Soil moisture content at three levels (10-12%,13-15%and 16-18%) and travel speed at three levels of 5, 6.5 and 8 Km/h on DRAFT, drawbar power, degree of soil pulverization, cone index and wheel slip in a clayloam soil were investigated. A randomized complete block design in factorial experiment with 9 treatments and 4 replications was used, and statistical analysis was conducted for obtaining the results. Effects of speed and soil moisture content on DRAFT and drawbar power were significant at 1 and 5% probability levels, respectively, but no significant effect on slippage was noticed. Different levels of soil moisture content had significant effect on soil cone index, but for various speeds, no significant effect was found in SECONDARY TILLAGE with TANDEM DISK, different moisture levels had significant effect on size reduction of MWD, but speed variations had no significant effect on MWD. Evaluation of MWD after disk operation showed that, the effect of soil moisture content at 1% probability levels were significant, but not for travel speed. The overall results indicated that, at soil moisture content ranges of 13-18 percent at the time of primary tillage, the total DRAFT and required drawbar power were decreased, and tillage operations ended up to a finer soil surface with smaller clod sizeson seed bed. Results also showed that, when the drawbar power is not a timiting speeds factor, ranging of 6-8 km/h can be recommended or disk operations.

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APA: Copy

KHOSRAVANI, A., RANJBAR, I., & LOGHAVI, M.. (2001). STUDY OF YIELD PARAMETERS OF TANDEM DISK. JOURNAL OF AGRICULTURAL KNOWLEDGE, 11(2), 67-77. SID. https://sid.ir/paper/28832/en

Vancouver: Copy

KHOSRAVANI A., RANJBAR I., LOGHAVI M.. STUDY OF YIELD PARAMETERS OF TANDEM DISK. JOURNAL OF AGRICULTURAL KNOWLEDGE[Internet]. 2001;11(2):67-77. Available from: https://sid.ir/paper/28832/en

IEEE: Copy

A. KHOSRAVANI, I. RANJBAR, and M. LOGHAVI, “STUDY OF YIELD PARAMETERS OF TANDEM DISK,” JOURNAL OF AGRICULTURAL KNOWLEDGE, vol. 11, no. 2, pp. 67–77, 2001, [Online]. Available: https://sid.ir/paper/28832/en

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