Design, development and evaluation of tractor operated seeder for mat type paddy nursery

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dc.contributor.advisorManes, Gursahib Singh
dc.contributor.authorModi, Rajesh Uttreshawar
dc.date.accessioned2020-10-01T04:37:23Z
dc.date.available2020-10-01T04:37:23Z
dc.date.issued2020
dc.description.abstractA tractor operated seeder for mat type paddy nursery was designed, developed and evaluated. The machine cuts soil from both sides and transfers it through the inclined belt conveyor to the horizontally placed soil conveying auger which distributes the soil equally on the sieving system. The sieving system drops the soil into the hopper of soil distribution unit placed beneath it. Before soil distribution unit, a soil compaction roller fitted at front of the machine compacts the soil surface. Polythene sheet roller was provided to lay downs the polythene sheet on this compacted soil surface. Soil hopper has a soil metering roller which drops the soil at a uniform thickness on the laid polythene sheet. Simultaneously, seed metering mechanism placed rear of soil distributing unit distributes the seed on the prepared soil bed in a uniform manner in one go. The machine was evaluated in the laboratory/controlled field conditions at three level of sieve oscillation (238, 318 and 398 spm), two level of sieve opening size (25×20 and 50×25 mm) and for two depth of soil cut (40 and 80 mm). These independent parameters significantly affected the dependent parameters namely seed spread, soil mat thickness and pulverization index at 5% level of significance, whereas seed damage and plastic sheet damage were non-significant. The higher overall seed spread at the middle bite of transplanter cut was 91.00 % and overall soil mat thickness at 950 mm bed width was 92.93 % corresponding to the best operational parameter combination of sieve oscillations 398 spm, sieve opening size of 25×20 mm and depth of soil cut of 80 mm. The pulverization index was 2.01 mm whereas, seed damage and plastic sheet damage was negligible. The field evaluation was conducted at these operational settings of the machine on three soil types (sandy loam, loam and silt loam) at three forward speeds 1.7, 2.2 and 2.7 km/h. The soil type had a non-significant effect whereas forward speed significantly affected the performance of the machine at 5 % level of significance. Best results were obtained at a forward speed of 1.7 km/h for 950 mm bed. At these operational parameters the mean overall seed spread was 90.93 %, mean overall soil mat thickness 97.88 %, seed germination 89.73 %, fuel consumption 4.36 l/h and effective field capacity 0.11 ha/h.en_US
dc.identifier.citationModi, Rajesh Uttreshawar (2020). Design, development and evaluation of tractor operated seeder for mat type paddy nursery (Unpublished Ph.D. Dissertation). Punjab Agricultural University, Ludhiana, Punjab, India.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810152170
dc.keywordsMat type nursery, Nursery seeder, Paddy nursery, Mat type nursery seederen_US
dc.language.isoenen_US
dc.pages129en_US
dc.publisherPunjab Agricultural University, Ludhianaen_US
dc.research.problemDesign, development and evaluation of tractor operated seeder for mat type paddy nurseryen_US
dc.subFarm, Machinery and Poweren_US
dc.subjectnullen_US
dc.themeDesign, development and evaluation of tractor operated seeder for mat type paddy nurseryen_US
dc.these.typePh.Den_US
dc.titleDesign, development and evaluation of tractor operated seeder for mat type paddy nurseryen_US
dc.typeThesisen_US
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