Role of physical and engineering properties of rice (Oryza sativa) cultivars for designing of precision planter

P RAJAIAH; INDRA MANI; ADARSH KUMAR; SATISH DEVARAM LANDE; ASHOK KUMAR SINGH

doi:10.56093/ijas.v85i12.54317

Authors

P RAJAIAH Research Scholar, ICAR-Indian Agricultural Research Institute, New Delhi 110 012
INDRA MANI Principal Scientist, ICAR-Indian Agricultural Research Institute, New Delhi 110 012
ADARSH KUMAR Principal Scientist, ICAR-Indian Agricultural Research Institute, New Delhi 110 012
SATISH DEVARAM LANDE Scientist, Division of Agricultural Engineering, ICAR-Indian Agricultural Research Institute, New Delhi 110 012
ASHOK KUMAR SINGH Principal Scientist, Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110 012

https://doi.org/10.56093/ijas.v85i12.54317

Keywords:

Engineering property, , Physical characteristics, Planter design, Rice cultivars

Abstract

The paper describes the effect of physical and engineering properties of five rice (Oryza sativa L.) cultivars, viz. Pusa 1121, Pusa 44, BPT 5205, MTU 7209 and MTU 1010 on the design parameters of precision planter for direct sowing of rice seeds in drylands. The properties were determined in three conditions of seeds, viz. dry condition, 1- day soaking and two day soaking condition. In all the five selected varieties, no significant difference in length was found between dry and soaked seed, while breadth and thickness of the seeds were found slight increase in all varieties. It was observed that the grain length varied from 7.32±0.61 to 13.79±0.93 mm, breadth 2.16±0.21 to 2.58±0.06 mm, sphericity, 43.66±2.45 to 30.56±3.49, 1000 grain-weight 14.37 to 32.6 g, angle of repose 25.25 to 33.68° and bulk density 524.6 to 667.56 kg/m3.The observed values can be used to fabricate the seed metering cells for different varieties with cell diameter ranging from 10 mm to 14 mm. Thickness and cell diameters of the seed metering discs were designed in reference to the maximum breadth and length. Based on the results, it can be revealed that flow rate from the hopper can be affected due to angle of repose and coefficient of friction for rice grains. Thus, to design the hopper the average values of angle of repose and coefficient of friction can be taken. The highest angle of repose observed in PUSA 1121 can be used to have a seed hopper slope of 35° to ensure free flow of seed. The coefficient of friction in all the selected varieties was less with mild steel as compared to galvanized-iron and wood surfaces. It was concluded that a minimum angle of 30°and a plate thickness of 4 mm can be used to design a hopper by selecting the low friction mild steel sheet. The measured bulk density and size values can be used to design a hopper of required capacity and seed metering plate cell size for required number of seeds/hill.

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References

Gupta Raj K, Ladha J K, Singh S, Singh R G, Jat M L, Saharawat Y,Singh V P, Singh S S, Singh G, Sah G, Gathala M, Gill M S, Alam M, Rehman R A M, Pathak H, Chauhan B S, Bhattacharya P and Malik R K. 2006. Production technology for direct-seeded rice.Technical Bulletin 8, Rice-Wheat Consortium for the Indo-Gangetic Plains, New Delhi, p 16.

Jayan P R and Kumar V J F. 2004. Planter design in relation to the physical properties of seeds.Journal of Tropical Agriculture 42(1-2): 69–71.

Kanchana S, Lakshmi Bharathi S, Ilamaran M and Singaravadivel. 2012. Physical quality of selected rice varieties. World Journal of Agriculture Scences 8(5): 468–72.

Mahajana G, Chauhan B S and Gilla M S. 2013. Dry-seeded rice culture in Punjab state of India: Lessons learned from farmers. Field Crops Research 144: 89–99. DOI: https://doi.org/10.1016/j.fcr.2013.01.008

Pandey S and Velasec L. 2002. Economics of direct seeding in Asia; Pattern of adoption and research priorities. (In) Direct seeding: research strategies and opportunities. Pandey S, Mortimer M, Eade L, Tuong T P, Lopez K and Hardi B (Eds). International Rice Research Institute Los Banos (Philippines), pp 3–14.

Pathak H, Tewari A N, Sankhyan S, Dubey D S, Mina U, Virender K S, Jain N and Bhatia A S. 2011. Direct-seeded rice: Potential, performance and problems - A review. Current Advances in Agriculture Sciences 3(2): 77–88.

Sahay K M and Singh K K.1994. Unit Operations of Agricultural Processing, pp 7–8.Vikas Publishing house Pvt Ltd, New Delhi.

Khura T K, Indra Mani and Srivastava A P. 2010. Some engineering properties of onion crop relevant to design of onion digger. Journal of Agricultural Engineering 47(1): 36– 42.

Weerakoona W M W, Mutunayakea M M P, Bandaraa C, Raob A N, Bhandarib D C, Ladhab J K. 2011. Direct-seeded rice culture in Sri Lanka: Lessons from farmers. Field Crops Research 121: 53–63. DOI: https://doi.org/10.1016/j.fcr.2010.11.009