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Author: Mohit Kumar × End date: 2023 × Start date: 2020 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Development of an experimental plot corn harvester
    (CCSHAU, Hisar, 2023-08) Mohit Kumar; Vijaya Rani
    Maize is one of the most important cereal crop in the world next to rice and wheat. In India, the cultivated area of corn in 2020-2021 was 9.8 million hectare with an average productivity of 3199 kg ha-1 and in Haryana, it was six thousand hectares with an average productivity of 2.83 t ha-1. The scientist community viz. agronomist, soil scientist, breeders, are working on maize crop. The scientist laydown experiments on small plots which are to be harvested. In the experimental design, the plots are small and scientists demand for small corn harvester. However, for the scientific research, there is requirement of the machines for collection of data multiple times. Harvesting is one of the most crucial task in maize farming. Manual harvesting operations typically require 8 to 10 persons to pick cobs from one acre area between 8 and 10 h which is very costly, tedious and time consuming. Thus, this study was undertaken to develop an experimental plot corn harvester. The corn harvester was developed and constitutes of feeding cum snapping unit, corn cob collection bucket, power transmission unit and main frame. The power was transmitted from PTO of the power tiller to the chain-sprocket mechanism and the gear assembly which rotated the feeding cum snapping unit as per required rpm. The power tiller was operated as per speed required in experimental design. The corn stalk entered the feeding cum snapping unit smoothly and the cob was later snapped by the snapping roller after which the cob was collected in the collection bucket. It was evaluated under the operating parameters: three forward travel speed (0.47 km h-1-0.70 km h-1, 1.12 km h-1-1.60 km h-1 and 1.83 km h-1-2.27 km h-1 ), three level of inclination angle (00, 100 and 200) and three rotational speed of feeding cum snapping rollers ( 400 rpm, 500 rpm and 600 rpm ). The optimum parameters were obtained as forward travel speed 1.34 km h-1, rotational speed of feeding cum snapping rollers 500 rpm and inclination angle of feeding cum snapping unit zero degree. The Corn cob picking efficiency, cut corn cob percentage and corn cob damage percentage of corn harvester were 97 %, 1.27 % and 0.97 % respectively. Actual field capacity of the harvester was found 0.046 ha h-1 with field efficiency of 76.67 %. The cost of operation was Rs 7586.11 ha-1. Thus, it saved 77.78 % of labour requirement for harvesting in one hectare area in comparison to manual method of harvesting. The break-even point was found 90.93 h yr-1. The payback period was found 0.39 years and benefit cost ratio was 1.32.
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    ThesisItemOpen Access
    Effect of planting methods and meteorological approach based irrigation scheduling on yield and water use efficiency of Aloe (Aloe barbadensis)
    (CCSHAU, Hisar, 2023-05-24) Mohit Kumar; Sutaliya, Jhabar Mal
    A field study titled "Effect of planting methods and meteorological approach based irrigation scheduling on yield and water use efficiency of Aloe (Aloe barbadensis)" was conducted from 2021 to 2023 at the MAP section, Research Area, Department of Genetics & Plant Breeding of CCS Haryana Agricultural University, Hisar. The experiment included three types of planting methods (Raised bed, Flat bed, and Ridge and furrow) and four levels of irrigation scheduling (Rainfed (Control), IW30mm/CPE=0.6, IW30mm/CPE=0.8, IW30mm/CPE=1) arranged in a factorial randomized block design with three replications. The results of the study revealed significant effects of both planting methods and irrigation scheduling on the growth, yield, yield attributes, and economic returns of aloe. Among the planting methods, raised bed demonstrated superior performance with significantly higher leaf yield (91.59 t/ha), gel yield (48.33 t/ha), net returns (₹256595/ha), and B:C (2.28) compared to ridge and furrow and flat bed. This was attributed to the increased number of harvestable leaves (14.80) associated with the raised bed. Regarding irrigation scheduling, IW30mm/CPE=0.8 closely followed by IW30mm/CPE=0.6 resulted in significantly higher leaf yield (88.28 t/ha) and gel yield (46.98 t/ha) compared to the control, with an increment of 32.05 t/ha and 20.77 t/ha, respectively. Additionally, IW30mm/CPE=0.6 exhibited higher net returns (₹232460/ha) and B:C (2.16), surpassing the control by ₹97435 and 0.23, respectively. Based on these findings, it is advised to adopt a raised bed planting method along with irrigation scheduling IW30mm/CPE=0.8 to achieve higher yields and IW30mm/CPE=0.6 to improve economic returns and enhanced water productivity in aloe.