National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
A Rotavator or rotary cultivator is the important secondary tillage implement as it provides greater degree of pulverization soil. It is an active tillage implement designed for preparing land suitable for sowing seeds or mixing manure or fertilizer into the soil. It breaks the soil clod into fine tilth by its rotary action of blades. It offers an advantage of rapid seedbed preparation and reduced draft compared to conventional tillage. However, a rotavator may produce the same degree of soil pulverisation as achieved after by combined one pass with a mouldboard plow, two passes with a disk harrow, and one pass with a spike tooth harrow. Rotavator save the time, labour and energy requirement in seed bed preparation. The objective of research was to study the effect of λ-ratio and rear shield position of the rotavator on the performance of rotavator under different field conditions namely, manually and combine harvested paddy and wheat field, for this purpose adown-cut type SV- rotary tiller was selected mounted with L- shaped was used for this experiment. The rear shield position was adjustable at full down and full up positions and three variables rotor speeds viz. 212, 265 and 331 rpm and two forward speed of tractor 2.86 and 3.57 km/h were selected for the experiment. The studies were conducted under four different field conditions at Crop Research Centre at GBPUAT Pantnagar Uttarakhand. The result revealed that the higher value of draft, fuel consumption and power consumption were found to be 233.33 kgf, 9.23 l/h and 24.92 kW in case of combine harvested paddy field while the lowest value of fuel and power consumption was found to be6.70 l/h and 16.55 kW in manually harvested paddy field and lowest value of draft was found in manually harvested paddy field but higher value of burial residue percentage was obtained 94.20 % in case of manually harvested paddy and lowest value was obtained 82.94% in combine harvested wheat.
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