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Although a few works have been conducted on low-tech greenhouse (LTG) for growing horticultural crops in Bangladesh but the cultivation of watermelon in winter season is unexplored. Therefore a study was conducted from late autumn to winter season of 2015/2016 to evaluate the production potentials of four varieties of watermelon viz. Sonya, Black Dorin, Badsha and Dragon. Three LTGs each represents a replication were erected where four pits were prepared under each LTG and four watermelon varieties were separately grown in separate pits. The variation in temperature between the LTG and those at outside was observed larger at around middle of the day and maximum variations were noticed in air and soil temperatures as much as 9 and 2oC, respectively around the noon time. Phenological development like days to first leaf, first vine and first male flower appearance was hastened due to high temperature by 2, 9 and 8 days, respectively. Vine growth in terms of number and length of vine, vine diameter, node number and internode length, leaf size etc. was found significantly greater in the plants grown with LTG than that found in the plants grown outside. Low-tech plants produced thinner leaves (i.e. higher specific leaf area) than that at outside indicate that leaf lamina expanded rapidly under high temperature. The higher vine growth under LTG can be ascribed due to the higher photosynthetic and transpiration rates as much as 3.5-fold (than that at outside) as favoured by high temperature. However, such excessive vine growth under LTG seriously hampered the development of female flower although a plenty of male flower production was observed. Thus it is concluded that watermelon fruit cannot be produced in winter (off-season) by using low-tech greenhouse without taking the other scientific measures for blooming the female flowers.
Biswas SC. Research activities on watermelon in BRAC, Bangladesh. 2020. Available:https://doi.org/10.13140/RG.2.2.24227.40483.
Daily Star. Lowest ever 2.6 degrees recorded in Tetulia. Dhaka likely to go under 7 degrees Celsius tonight. Daily Star, published on 8 January 2018. Available:https://www.thedailystar.net/country/lowest-temperature-in-bangladesh-bd-on-january-8-2018-recorded-3-degree-celsius-in-nilphamari-1516666; Accessed on 16 November 2021.
Dhaka Tribune. Winter in Bangladesh not over yet, another cold wave coming. Published on 9 January 2021. Available:https://www.dhakatribune.com/bangladesh/2021/01/09/winter-in-bangladesh-not-over-yet-another-cold-wave-coming; accessed on 16 November 2021.
Ollila A. The Greenhouse Effect Definition. Physical Science International Journal. 2019;23(2):1-5. Available:https://doi.org/10.9734/PSIJ/2019/v23i230149.
Awal MA, Dhar PC. Phenological and morpho-physiological development, sex expression and production potential of black and stripped rind varieties of watermelon (Citrullus lanatus) in Bangladesh. Discovery Agriculture. 2021;Article in press.
Singh A, Syndor A, Deka BC, Singh RK, Patel RK. The effect of microclimate inside low tunnels on off season production of strawberry (Frageria × Anamosa Duch.). Scientia Horticulturae. 2012;144:36-41.
Shamshiri RR, Jones JW, Thorp KR, Ahmad D, Che Man H, Taheri S. Review of optimum temperature, humidity, and vapour pressure deficit for microclimate evaluation and control in greenhouse cultivation of tomato: a review. International Agrophysics. 2018;32:287- 302. Available:https://doi.org/10.1515/intag-2017-0005.
Prothom Alo. Another cold wave imminent in Bangladesh. Prothom Alo, published on 10 January 2021. Available:https://en.prothomalo.com/environment/another-cold-wave-imminent-in-bangladesh; Accessed on 16 November 2021.
Mostafa, MG. Greenhouse climate on production potentialities of okra. Master’s Dissertation, Department of Environmental Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh, November 2007.
Parvej MR, Khan MAH, Awal MA. Phenological development and productive potentials of tomato under polyhouse climate. The Journal of Agricultural Sciences. 2010;5:19-31.
Awal MA, Dhar PC, Pramanik MHR. Development of suitable microclimate using low˗tech greenhouse for off-season production of high value crops in Bangladesh. European Journal of Agriculture and Food Sciences. 2021; Article in press.
Berghage R. Plastics in greenhouse production. A guide to the manufacture, performance, and potential of plastics in Agriculture. 2017. Available:https://www.sciencedirect.com/topics/engineering/covered-greenhouse; 10 October 2021.
Singh B. New Age protected cultivation. precision farming & protected cultivation. A magazine devoted for the advancement of protected cultivation technology. Prof. Brahma Singh Horticulture Foundation, BSHF. 2020;6(1):1-56.
Ogden AB, Van Iersel W. Southern highbush blueberry production in high tunnels: temperatures, development, yield, and fruit quality during the establishment years. Horticultural Science. 2009;44:1850-1856.
Mishra GP, Singh N, Kumar H, Singh SB. Protected cultivation for food and nutritional security at Ladakh. Defence Science Journal. 2010;60(2):219-225.
Zhao Y, Gu M, Evans GB, Harkess R. Planting date effect on yield of tomato, eggplant, pepper, zinnia, and snapdragon in high tunnel in Mississippi. Journal of Crop Improvement. 2014;28:27-37. Available:https://doi.org/10.1080/15427528.2013.858283.
Job M. Study on changes in microclimatic parameters under poly-house with different color plastic mulching during tomato cultivation. Journal of Pharmacognosy and Phytochemistry. 2018;SP1:689-694.
Jinu A, Abdul Hakkim VM. Performance of a low cost automation system for greenhouse cooling. International Journal of Current Research. 2018;10(08):72158-72163.
Awal MA, Khan MAH. Alteration of soil temperature and moisture through mulching on the morpho-physiological differentiation in maize. Pakistan Journal of Biological Sciences. 1999;2(4):1164-1167. Available:https://doi.org/10.3923/pjbs.1999.1164.1167.
Awal MA, Khan MAH. Mulch induced eco-physiological growth and yield of maize. Pakistan Journal of Biological Sciences. 2000;2(4):61-64. Available:https://doi.org/10.3923/pjbs.2000.61.64.
Awal MA, Ikeda T. Controlling canopy formation, flowering, and yield in field-grown stands of peanut (Arachis hypogaea L.) with ambient and regulated soil temperature. Field Crops Research. 2003;81(2-3):121-132. Available:https://doi.org/10.1016/S0378-4290(02)00216-2.
Campagnol R, Mello SC, Barbosa JC. Vertical growth of mini watermelon according to the training height and plant density. Horticultura Brasileira. 2012;30(4):726-732. Available:https://doi.org/10.1590/S0102-05362012000400027.
Oraegbunam CJ, Njoku OM, Imoh ON, Obalum SE, Onyia VN, Atugwu AI, Uchida Y. Agronomic performance and adaptability of three varieties of watermelon (Citrullus lanatus) on sandy loam soil in derived savanna. Agro-Science Journal of Tropical Agriculture, Food Environment and Extension. 2016;15(3):46-50.
Yuge L, Aijiao X, Wei D, Zhi L, Guoshen L. Genetic analysis of a dwarf vine and small fruit watermelon mutant. Horticultural Plant Journal. 2016;2(4):224-228. Available:http://dx.doi.org/10.1016/j.hpj.2016.10.002.
Dadheech S, Ramawtar, Yadav CM. Impact of mulching material on the growth, yield and quality of watermelon (Citrullus lonatus). International Journal of Current Microbiology and Applied Science. 2018;7(7):2774-2782. Available:https://doi.org/10.20546/ijcmas.2018.707.324.
Meshram LT, Sonkamble AM, Patil SR, Dahake LZ. Effect of plant growth regulators on growth and yield of watermelon. International Journal of Current Microbiology and Applied Science. 2020;Special Issue-11:529-534.
Gulut KY. Nitrogen and boron nutrition in grafted watermelon. I: Impact on pomological attributes, yield and fruit quality. PLOS ONE. 2021;16(5):e0252396. Available:https://doi.org/10.1371/journal.pone.0252396.
Runkle E. Interactions of Light, CO2 and Temperature on Photosynthesis. 2015. Available:https://gpnmag.com/article/interactions-light-co2-and-temperature-photosynthesis/; Accessed on 16 November 2021.
Kumar A, Singh SS, Kumar A. Management practices of growers using plastic low tunnel on flowering and fruiting behaviour of bitter gourd (Momordica charantia L.) during off season. Journal of Pharmacognosy and Photochemistry. 2017;SP1:942-945.
Kumar S, Kumar A, Singh SS, Prasad R, Kant S. Effect of Plastic Low Tunnel on Flowering and Fruiting Behaviour during off Season of Bottle Gourd [Lagenaria siceraria (Mol.) Standl]. International Journal of Current Microbiology and Applied Sciences. 2018;Special Issue-7:4829-4835.
Ranjan A, Kumar A, Prakash S, Pal AK. Effect of low poly tunnel and planting time on growth parameters and yield of muskmelon. International Journal of Current Microbiology and Applied Sciences. 2019;8(1):2735-2739. Available:https://doi.org/10.20546/ijcmas.2019.801.289.
Singh S, Saxena AK. Protected cultivation of summer squash in mid-hills of Uttarakhand. Journal of Horticultural Science and Research. 2020;3(1)85-85. Available:https://doi.org/10.36959/745/402.
Sylvestre H, Thierry K, Rene N. Production of watermelon as influenced by different spacing and mulching under Rubilizi conditions in Rwanda. Global Journal of Advanced Research. 2015;2(1):5-15.