Coping with Climatic Uncertainties Through Improved Production Technologies in Tropical Island Conditions

Singh, Shrawan Kumar; Singh, Dharmendra; Velmurugan, A.; Jaisankar, I.; Swarnam, T. P.

doi:10.1016/b978-0-12-813064-3.00023-5

Cited by 7 publications

(8 citation statements)

References 39 publications

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“…The minimum influence of low˗tech cover on modifying the relative humidity is attributed due to the non air-tight conditions of tunnel structure and the finding is corroborated with the results reported by [3] and [17]. However, the relative humidity was found higher in a controlled hi-tech greenhouse [1] with an average 4.7 percent maximum and 10.6 percent minimum values [23].…”

Section: Discussionsupporting

confidence: 77%

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Development of Suitable Microclimate Using Low˗tech Greenhouse for Off-Season Production of High Value Crops in Bangladesh

Awal

Dhar

Pramanik

2021

EJFOOD

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Low˗tech greenhouses (low˗techs) have been used globally to cultivate horticultural crops since many years, but their utilization in Bangladesh is a recent phenomenon. Moreover, information on altered microclimate inside the low˗tech is hardly reported. An investigation has been conducted in the Crop Botany Field Laboratory, Bangladesh Agricultural University (24o72´N, 90o43´E and 18 masl), Mymensingh during the late autumn to winter seasons from mid-October to mid-February of 2015/16, 2016/17 and 2017/18 years to find out the variation in microclimatic parameters between inside and outside of low˗techs and to evaluate the suitability of altered microclimate inside the low˗techs for off˗season production of high value crops in Bangladesh. Three low˗techs were erected in each year using bamboo frame covered with single inflated polyethylene film (thickness = 0.2 mm). Major microclimatic parameters inside and aside outside the low˗techs were measured with standard devices or techniques. Around 30 percent incoming photosynthetically active radiation (PAR) was cut˗off by low˗tech cover during solar noon when the sun’s zenith gets minimum value (around 0o). However, this cut˗off portion of PAR was gradually increased with the sunrise and sunset when zenith is around 90o. During the daytime, low˗tech retains higher air temperature than that found at outside and the differences in air temperature between inside and outside of low˗techs was gradually increased after sunrise with a peak difference of 7 to 9 oC following the solar noon (i.e., 13:00-14:00 hour). No distinct variation in relative humidity was recorded between inside and outside of the low˗tech. Low˗tech cover retains higher soil temperature than that was recorded in outside. The variation of both air and soil temperatures between inside and outside of low˗techs was higher during the daytime but lower at nighttime or even at daytime when the sky remained overcast. The variation in microclimatic parameters under low˗techs not only protect the growing crops from climate vagaries during autumn, winter and spring seasons but also provide suitable warmer environment for growing many high value crops during that seasons and thus crop production in off˗season and/or season extension benefits can easily be achieved by low˗techs.

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Section: Discussionsupporting

confidence: 77%

“…Low˗tech greenhouse ('Low˗tech') that represents a semicircular, square or elongated structure constructed with bamboo and/or wood and polyethylene film are usually transparent or clear in appearance as a cladding material [1]. It is also known as a hoop greenhouse, hoophouse, high tunnel, polytunnel or polyhouse.…”

Section: Introductionmentioning

confidence: 99%

Development of Suitable Microclimate Using Low˗tech Greenhouse for Off-Season Production of High Value Crops in Bangladesh

Awal

Dhar

Pramanik

2021

EJFOOD

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“…The maximum yield in CL1.2 could be due to high soil moisture content and soil properties content in a specially modified bed. The finding is similar to Singh et al (2008) where the modified bed of ridged and furrow saves 20-25% water and increase 10-20% yield. The finding further supported by Bhardwaj et al (2010) and Hamilton et al (2005).…”

Section: Growth Parameterssupporting

confidence: 80%

Effect of Cropping and Management Techniques on Chilli (Capsicum annuum L.) Production under Rain-Fed Farming

Zangmo

Wattanachaiyingcharoen

Pansak

et al. 2020

IJARe

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A field experiment was conducted to evaluate cropping and management techniques for chilli plants under rain-fed conditions. Cropping included a standard farmers style bed (designated as CL1.1), a specially modified bed (CL1.2) and a standard farmers bed (no flower removal) as the control (CL1.3). Management included 1st bottom three flower removal in CL1.1 (designated as ML1.1) and CL1.2 (ML1.2). The result showed that chilli cultivated in CL1.2 outperformed both CL1.1 and CL1.3 in all tested aspects including growth, yield, soil moisture content and soil properties. CL2.3 performed the lowest in all parameters. ML2.2 exhibited ML1.1 in plant-height, leaf-length, leaf-breadth, fruit-girth, fruit number per plant, OC%, pH and NPK. ML2.1 performed the maximum in stem diameter, leaf number, fruit weight, girth-apex, fruit-length with pedicel and fruit-length. Considering the combination effect of cropping and management levels, CL1.2*ML2.2 outperformed CL1.3*ML0 in all traits. These results indicated the characteristics of the specially modified plot and 1st bottom three flower removal in a modified plot was the recommended combination under rain fed farming.

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“…The term Controlled Environment Agriculture (CEA) refers to the growth and development of plants in a fully controlled environment with the use of modern horticultural techniques and technological advances resulting in achieving higher yields and improving product quality (Gómez et al 2019). On the other hand, greenhouses are structures with transparent materials in which the microclimatic parameters are also modified to enhance plant growth and productivity and ensure allyear-round production (Shrawan Singh et al 2008). CEA is a broader term that includes greenhouses, rooftop greenhouses, growth chambers, plant factories as well as vertical farms.…”

Section: Introductionmentioning

confidence: 99%

Smart greenhouses as the path towards precision agriculture in the food-energy and water nexus: case study of Qatar

Karanisa

Achour²,

Ouammi

et al. 2022

Environ Syst Decis

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Greenhouse farming is essential in increasing domestic crop production in countries with limited resources and a harsh climate like Qatar. Smart greenhouse development is even more important to overcome these limitations and achieve high levels of food security. While the main aim of greenhouses is to offer an appropriate environment for high-yield production while protecting crops from adverse climate conditions, smart greenhouses provide precise regulation and control of the microclimate variables by utilizing the latest control techniques, advanced metering and communication infrastructures, and smart management systems thus providing the optimal environment for crop development. However, due to the development of information technology, greenhouses are undergoing a big transformation. In fact, the new generation of greenhouses has gone from simple constructions to sophisticated factories that drive agricultural production at the minimum possible cost. The main objective of this paper is to present a comprehensive understanding framework of the actual greenhouse development in Qatar, so as to be able to support the transition to sustainable precision agriculture. Qatar’s greenhouse market is a dynamic sector, and it is expected to mark double-digit growth by 2025. Thus, this study may offer effective supporting information to decision and policy makers, professionals, and end-users in introducing new technologies and taking advantage of monitoring techniques, artificial intelligence, and communication infrastructure in the agriculture sector by adopting smart greenhouses, consequently enhancing the Food-Energy-Water Nexus resilience and sustainable development. Furthermore, an analysis of the actual agriculture situation in Qatar is provided by examining its potential development regarding the existing drivers and barriers. Finally, the study presents the policy measures already implemented in Qatar and analyses the future development of the local greenhouse sector in terms of sustainability and resource-saving perspective and its penetration into Qatar’s economy.

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Coping with Climatic Uncertainties Through Improved Production Technologies in Tropical Island Conditions

Cited by 7 publications

References 39 publications

Development of Suitable Microclimate Using Low˗tech Greenhouse for Off-Season Production of High Value Crops in Bangladesh

Development of Suitable Microclimate Using Low˗tech Greenhouse for Off-Season Production of High Value Crops in Bangladesh

Effect of Cropping and Management Techniques on Chilli (Capsicum annuum L.) Production under Rain-Fed Farming

Smart greenhouses as the path towards precision agriculture in the food-energy and water nexus: case study of Qatar

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