Journal of Science, Technology and Environment Informatics
Volume 10 - Issue 01 | Year of Publication: 2020
Article Type: Research Article | No. 68, 2020 | Country: Bangladesh | pp. 673-684 | Open Access
Title: Trend of irrigation water requirement in Halda River basin of Bangladesh
Authors: Haque, M. P. and Chowdhury S. M. K. H.
DOI: http://dx.doi.org/10.18801/jstei.100120.68
Title: Trend of irrigation water requirement in Halda River basin of Bangladesh
Authors: Haque, M. P. and Chowdhury S. M. K. H.
DOI: http://dx.doi.org/10.18801/jstei.100120.68
Trend of irrigation water requirement in Halda River basin of Bangladesh
Abstract
The precise estimation of irrigation water requirement trends has a vital role in water resources planning for agricultural growth and development in the Halda River basin. The trend of net irrigation water requirement and irrigation parameters was detected through twenty-seven years of data. The Mann-Kendall method was tested to find out the trend before that serial correlation test was performed with rank von Neumann ratio for lag-one auto-correlation. In case of serial- correlation significance, the pre-whitened time series data was used. Results revealed that net irrigation water requirement of Boro rice, mustard, cowpea, eggplant, tomato, wheat, maize and sweet potato was the increasing trend bounded between 8.15 mm and 2.31 mm per year at 1% level of significance. The trend was an integrative effect of wind speed, relative humidity, rainfall, and Evapotranspiration (ET0) rather than temperature. The non-significance trend of rainfall was found in this basin (p<0.01). Reference ET0 in the dry season (Nov, Dec, Jan and Feb) had trend upward at a 1% level of significance. Hence, the upward trend predicts extra demand for irrigation water in the near future for sustainable crop production in the Halda River basin.
Key Words: Evapotranspiration (ET0), Mann-Kendall test, Net irrigation water requirement, Serial correlation.
Abstract
The precise estimation of irrigation water requirement trends has a vital role in water resources planning for agricultural growth and development in the Halda River basin. The trend of net irrigation water requirement and irrigation parameters was detected through twenty-seven years of data. The Mann-Kendall method was tested to find out the trend before that serial correlation test was performed with rank von Neumann ratio for lag-one auto-correlation. In case of serial- correlation significance, the pre-whitened time series data was used. Results revealed that net irrigation water requirement of Boro rice, mustard, cowpea, eggplant, tomato, wheat, maize and sweet potato was the increasing trend bounded between 8.15 mm and 2.31 mm per year at 1% level of significance. The trend was an integrative effect of wind speed, relative humidity, rainfall, and Evapotranspiration (ET0) rather than temperature. The non-significance trend of rainfall was found in this basin (p<0.01). Reference ET0 in the dry season (Nov, Dec, Jan and Feb) had trend upward at a 1% level of significance. Hence, the upward trend predicts extra demand for irrigation water in the near future for sustainable crop production in the Halda River basin.
Key Words: Evapotranspiration (ET0), Mann-Kendall test, Net irrigation water requirement, Serial correlation.
HOW TO CITE THIS ARTICLE
MLA
Haque and Chowdhury “Trend of irrigation water requirement in Halda river basin of Bangladesh.” Journal of Science, Technology and Environment Informatics, 10(01) (2020): 673-684.
APA
Haque, M. P. and Chowdhury S. M. K. H. (2020). Trend of irrigation water requirement in Halda river basin of Bangladesh. Journal of Science, Technology and Environment Informatics, 10(01), 673-684.
Chicago
Haque, M. P. and Chowdhury S. M. K. H. “Trend of irrigation water requirement in Halda river basin of Bangladesh.” Journal of Science, Technology and Environment Informatics, 10(01), (2020): 673-684.
Harvard
Haque, M. P. and Chowdhury S. M. K. H. 2020. Trend of irrigation water requirement in Halda river basin of Bangladesh. Journal of Science, Technology and Environment Informatics, 10(01), pp. 673-684.
Vancouver
Haque, MP and Chowdhury, SMKH. Trend of irrigation water requirement in Halda river basin of Bangladesh. Journal of Science, Technology and Environment Informatics, 2020 August 10(01), 673-684.
MLA
Haque and Chowdhury “Trend of irrigation water requirement in Halda river basin of Bangladesh.” Journal of Science, Technology and Environment Informatics, 10(01) (2020): 673-684.
APA
Haque, M. P. and Chowdhury S. M. K. H. (2020). Trend of irrigation water requirement in Halda river basin of Bangladesh. Journal of Science, Technology and Environment Informatics, 10(01), 673-684.
Chicago
Haque, M. P. and Chowdhury S. M. K. H. “Trend of irrigation water requirement in Halda river basin of Bangladesh.” Journal of Science, Technology and Environment Informatics, 10(01), (2020): 673-684.
Harvard
Haque, M. P. and Chowdhury S. M. K. H. 2020. Trend of irrigation water requirement in Halda river basin of Bangladesh. Journal of Science, Technology and Environment Informatics, 10(01), pp. 673-684.
Vancouver
Haque, MP and Chowdhury, SMKH. Trend of irrigation water requirement in Halda river basin of Bangladesh. Journal of Science, Technology and Environment Informatics, 2020 August 10(01), 673-684.
Article Type: Research Article | No. 69, 2020 | Country: Bangladesh | pp. 685-693 | Open Access
Title: Ergonomic study of BRRI multi-row power weeder for rice cultivation
Authors: H. Paul, M. A. Hossen, S. Islam, M. M. Rahman and M. A. Rahman
DOI: http://dx.doi.org/10.18801/jstei.100120.69
Title: Ergonomic study of BRRI multi-row power weeder for rice cultivation
Authors: H. Paul, M. A. Hossen, S. Islam, M. M. Rahman and M. A. Rahman
DOI: http://dx.doi.org/10.18801/jstei.100120.69
Ergonomic study of BRRI multi-row power weeder for rice cultivation
Abstract
Weeds are the major biotic confinements of rice productivity. In Bangladesh, weeding operation is done manually pulling or by using simple tools like khurpi, push-pull Japanese weeder, BRRI, BARI and locally developed weeder. The main objective of the research work was to assess the ergonomic factors of BRRI multi-row power operated weeder. This study was carried out in the cultivators’ land, Tarhat Para, Gazipur Sadar under silty loam soil condition during Boro season, 2018-2019. Three operators were casually selected for ergonomic evaluation. Heart rate was measured every 30 minutes during operation. Body mass index (BMI) values were found to be 24.05, 21.48 and 23.48 kg m-2 for operators O1, O2 and O3 respectively. The mean working heart rate for operating BRRI multi-row power weeder was found to be 134.67, 137.33 and 138.67 beats min-1 and the equivalent average energy expenditure rate was found to be 28.61, 29.72 and 30.28 kJ min-1 during weeding operation for operators O1, O2 and O3 respectively. The oxygen consumption rate was differing from 0.86 to 0.90 l min-1. The rest pause during weeding operation was found to be 11 minutes followed by 30 minutes of operation. Based on the workload, the operation of BRRI multi-row power paddy weeder is ergonomically safe and it could be operated continually upto 8 hours of a long day if 11 minutes of work rest time to a operator may be taken after 30 minutes of operation.
Key Words: Body mass index, Oxygen consumption rate, Energy expenditure rate and Rest pause during work.
Abstract
Weeds are the major biotic confinements of rice productivity. In Bangladesh, weeding operation is done manually pulling or by using simple tools like khurpi, push-pull Japanese weeder, BRRI, BARI and locally developed weeder. The main objective of the research work was to assess the ergonomic factors of BRRI multi-row power operated weeder. This study was carried out in the cultivators’ land, Tarhat Para, Gazipur Sadar under silty loam soil condition during Boro season, 2018-2019. Three operators were casually selected for ergonomic evaluation. Heart rate was measured every 30 minutes during operation. Body mass index (BMI) values were found to be 24.05, 21.48 and 23.48 kg m-2 for operators O1, O2 and O3 respectively. The mean working heart rate for operating BRRI multi-row power weeder was found to be 134.67, 137.33 and 138.67 beats min-1 and the equivalent average energy expenditure rate was found to be 28.61, 29.72 and 30.28 kJ min-1 during weeding operation for operators O1, O2 and O3 respectively. The oxygen consumption rate was differing from 0.86 to 0.90 l min-1. The rest pause during weeding operation was found to be 11 minutes followed by 30 minutes of operation. Based on the workload, the operation of BRRI multi-row power paddy weeder is ergonomically safe and it could be operated continually upto 8 hours of a long day if 11 minutes of work rest time to a operator may be taken after 30 minutes of operation.
Key Words: Body mass index, Oxygen consumption rate, Energy expenditure rate and Rest pause during work.
HOW TO CITE THIS ARTICLE
MLA
Paul et al. “Ergonomic study of BRRI multi-row power weeder for rice cultivation.” Journal of Science, Technology and Environment Informatics 10(01) (2020): 685-693.
APA
Paul, H., Hossen, M. A., Islam, S., Rahman, M. M. and Rahman, M. A. (2020). Ergonomic study of BRRI multi-row power weeder for rice cultivation. Journal of Science, Technology and Environment Informatics, 10(01), 685-693.
Chicago
Paul, H., Hossen, M. A., Islam, S., Rahman, M. M. and Rahman, M. A. “Ergonomic study of BRRI multi-row power weeder for rice cultivation.” Journal of Science, Technology and Environment Informatics 10(01) (2020): 685-693.
Harvard
Paul, H., Hossen, M. A., Islam, S., Rahman, M. M. and Rahman, M. A. 2020. Ergonomic study of BRRI multi-row power weeder for rice cultivation. Journal of Science, Technology and Environment Informatics, 10(01), pp. 685-693.
Vancouver
Paul, H, Hossen, MA, Islam, S, Rahman, MM and Rahman, MA. Ergonomic study of BRRI multi-row power weeder for rice cultivation. Journal of Science, Technology and Environment Informatics. 2020 August 10(01): 685-693.
MLA
Paul et al. “Ergonomic study of BRRI multi-row power weeder for rice cultivation.” Journal of Science, Technology and Environment Informatics 10(01) (2020): 685-693.
APA
Paul, H., Hossen, M. A., Islam, S., Rahman, M. M. and Rahman, M. A. (2020). Ergonomic study of BRRI multi-row power weeder for rice cultivation. Journal of Science, Technology and Environment Informatics, 10(01), 685-693.
Chicago
Paul, H., Hossen, M. A., Islam, S., Rahman, M. M. and Rahman, M. A. “Ergonomic study of BRRI multi-row power weeder for rice cultivation.” Journal of Science, Technology and Environment Informatics 10(01) (2020): 685-693.
Harvard
Paul, H., Hossen, M. A., Islam, S., Rahman, M. M. and Rahman, M. A. 2020. Ergonomic study of BRRI multi-row power weeder for rice cultivation. Journal of Science, Technology and Environment Informatics, 10(01), pp. 685-693.
Vancouver
Paul, H, Hossen, MA, Islam, S, Rahman, MM and Rahman, MA. Ergonomic study of BRRI multi-row power weeder for rice cultivation. Journal of Science, Technology and Environment Informatics. 2020 August 10(01): 685-693.
Article Type: Research Article | No. 70, 2020 | Country: Bangladesh | pp. 694-708 | Open Access
Title: Impact of organic substance on growth attributes of mat type rice seedlings in the trays for machine transplanting
Authors: Shahed, A. B. M., Hossen, M. A., Al Mamun, M. R., Tamanna, T. A. and Mizanur, M
DOI: http://dx.doi.org/10.18801/jstei.100120.70
Title: Impact of organic substance on growth attributes of mat type rice seedlings in the trays for machine transplanting
Authors: Shahed, A. B. M., Hossen, M. A., Al Mamun, M. R., Tamanna, T. A. and Mizanur, M
DOI: http://dx.doi.org/10.18801/jstei.100120.70
Impact of organic substance on growth attributes of mat type rice seedlings in the trays for machine transplanting
Abstract
Rice seedling for mechanical transplanting must fulfill the prerequisites of guideline seedling block with uniform density of seedlings and between bending pulls for rolling. The present study was carried out at the Farm Power and Machinery Department, Sylhet Agricultural University, Sylhet during Boro season/2018-19 with the objective to assess the impact of organic substance on agronomic attributes of mat type rice seedling. The seedling was raised on plastic rigid tray utilizing sandy clay loam (SCL) and sandy clay (SC) soil blending with the organic fertilizer of cow-dung (CD), rice bran (RB), rice husk (RH) and tea wastage (TW) at the rate of 0.0, 5, 10, 15 and 20%, respectively. Averaged across the rate of soil mixture, 5 to 15% of CD and RB with the both types of soil gave higher seedling height, leaf length and stem length while 20% of CD and TW also showed better result for number of leaves and stem thickness. Considering all parameters, 15 to 20% rice husk and tea wastage mixed with the sandy clay loam soil and 10 to 15% with the sandy loam soil gave good result. Be that as it may, seedling quality differed among the natural composts with the two kinds of soil more or less like CD > RB > TW > RH. Water requirement in the SC soil was more compared to SCL soil. It was observed that crack was formed on the sandy clay soil in tray. For both types of soil, the density of seeds in the mat at the rate of 6-7 seeds cm-2 was found at 80% of soil mixture along with rice bran. The findings of the study could be promoted widely in farmer’s field to raise better quality of mat type seedling for better performance of the mechanical rice transplanter which ultimately leads to getting better rice yield.
Key Words: Rice transplanter, Organic fertilizer, Agronomic characteristics and Percentage of organic mixture.
Abstract
Rice seedling for mechanical transplanting must fulfill the prerequisites of guideline seedling block with uniform density of seedlings and between bending pulls for rolling. The present study was carried out at the Farm Power and Machinery Department, Sylhet Agricultural University, Sylhet during Boro season/2018-19 with the objective to assess the impact of organic substance on agronomic attributes of mat type rice seedling. The seedling was raised on plastic rigid tray utilizing sandy clay loam (SCL) and sandy clay (SC) soil blending with the organic fertilizer of cow-dung (CD), rice bran (RB), rice husk (RH) and tea wastage (TW) at the rate of 0.0, 5, 10, 15 and 20%, respectively. Averaged across the rate of soil mixture, 5 to 15% of CD and RB with the both types of soil gave higher seedling height, leaf length and stem length while 20% of CD and TW also showed better result for number of leaves and stem thickness. Considering all parameters, 15 to 20% rice husk and tea wastage mixed with the sandy clay loam soil and 10 to 15% with the sandy loam soil gave good result. Be that as it may, seedling quality differed among the natural composts with the two kinds of soil more or less like CD > RB > TW > RH. Water requirement in the SC soil was more compared to SCL soil. It was observed that crack was formed on the sandy clay soil in tray. For both types of soil, the density of seeds in the mat at the rate of 6-7 seeds cm-2 was found at 80% of soil mixture along with rice bran. The findings of the study could be promoted widely in farmer’s field to raise better quality of mat type seedling for better performance of the mechanical rice transplanter which ultimately leads to getting better rice yield.
Key Words: Rice transplanter, Organic fertilizer, Agronomic characteristics and Percentage of organic mixture.
HOW TO CITE THIS ARTICLE
MLA
Shahed, el al. “Impact of organic substance on growth attributes of mat type rice seedlings in the trays for machine transplanting.” Journal of Science, Technology and Environment Informatics 10(01) (2020): 694-708.
APA
Shahed, A. B. M., Hossen, M. A., Al Mamun, M. R., Tamanna, T. A. and Mizanur, M. (2020). Impact of organic substance on growth attributes of mat type rice seedlings in the trays for machine transplanting. Journal of Science, Technology and Environment Informatics, 10(01), 694-708.
Chicago
Shahed, A. B. M., Hossen, M. A., Al Mamun, M. R., Tamanna, T. A. and Mizanur, M. “Impact of organic substance on growth attributes of mat type rice seedlings in the trays for machine transplanting.” Journal of Science, Technology and Environment Informatics 10(01) (2020): 694-708.
Harvard
Shahed, A. B. M., Hossen, M. A., Al Mamun, M. R., Tamanna, T. A. and Mizanur, M. 2020. Impact of organic substance on growth attributes of mat type rice seedlings in the trays for machine transplanting Journal of Science, Technology and Environment Informatics, 10(01), pp. 694-708.
Vancouver
Shahed, ABM, Hossen, MA, Al Mamun, MR, Tamanna, TA and Mizanur, M. Impact of organic substance on growth attributes of mat type rice seedlings in the trays for machine transplanting. Journal of Science, Technology and Environment Informatics. 2020 October 10(01): 694-708..
MLA
Shahed, el al. “Impact of organic substance on growth attributes of mat type rice seedlings in the trays for machine transplanting.” Journal of Science, Technology and Environment Informatics 10(01) (2020): 694-708.
APA
Shahed, A. B. M., Hossen, M. A., Al Mamun, M. R., Tamanna, T. A. and Mizanur, M. (2020). Impact of organic substance on growth attributes of mat type rice seedlings in the trays for machine transplanting. Journal of Science, Technology and Environment Informatics, 10(01), 694-708.
Chicago
Shahed, A. B. M., Hossen, M. A., Al Mamun, M. R., Tamanna, T. A. and Mizanur, M. “Impact of organic substance on growth attributes of mat type rice seedlings in the trays for machine transplanting.” Journal of Science, Technology and Environment Informatics 10(01) (2020): 694-708.
Harvard
Shahed, A. B. M., Hossen, M. A., Al Mamun, M. R., Tamanna, T. A. and Mizanur, M. 2020. Impact of organic substance on growth attributes of mat type rice seedlings in the trays for machine transplanting Journal of Science, Technology and Environment Informatics, 10(01), pp. 694-708.
Vancouver
Shahed, ABM, Hossen, MA, Al Mamun, MR, Tamanna, TA and Mizanur, M. Impact of organic substance on growth attributes of mat type rice seedlings in the trays for machine transplanting. Journal of Science, Technology and Environment Informatics. 2020 October 10(01): 694-708..
Volume 10- Issue 02 | Year of Publication: 2020
Article Type: Research Article | No. 71, 2020 | Country: Bangladesh | pp. 709-716 | Open Access
Title: Importance of intercropping for biodiversity conservation
Authors:Mala, M., Mollah, M. M. I. and Baishnab, M.
DOI: http://dx.doi.org/10.18801/jstei.100220.71
Title: Importance of intercropping for biodiversity conservation
Authors:Mala, M., Mollah, M. M. I. and Baishnab, M.
DOI: http://dx.doi.org/10.18801/jstei.100220.71
Importance of intercropping for biodiversity conservation
Abstract
Traditional there are two strategies to handle pest problems in crop production, either dependence on non-chemical agricultural practices (such as cultural, mechanical, biological practices etc.) or reliance on existing natural pest control mechanisms. Intercropping is a cultural non-chemical agricultural practice where two or more crops are grown on the same field in a year with different cropping patterns. In this multiple cropping system, biodiversity and pest suppression are increased. Biodiversity can restore the natural elements of agro ecosystem because almost all favorable elements of natural enemies are available in diversified agro ecosystem. Energy intensive modern technology in agriculture is one of the vital causes for loss of biodiversity. In intercropping system biological pest control method can be ensured with higher level of crop diversity instead of energy intensive agriculture. Intercropping provides different benefits on pest management with two available hypotheses or mechanism. One of the hypotheses is the ‘resource concentration hypothesis’ and another is the ‘natural enemies hypothesis’. Intercropping, directly and indirectly, influences to increase biodiversity which results in reduction of pest densities in crop fields. As a result, less expense for use of pesticide is required and finally higher yield also add some financial benefits. Intercropping system utilizes inherent ability of plant to protect pests. Therefore further knowledge about genotypic crop diversity, diversity of natural enemies, chemically-mediated mechanisms of Volatile Organic Compounds (VOCs) will be effective for further improvement of intercropping system for greater benefits.
Key Words: Biodiversity, Intercropping, Poly culture, Pest management
Abstract
Traditional there are two strategies to handle pest problems in crop production, either dependence on non-chemical agricultural practices (such as cultural, mechanical, biological practices etc.) or reliance on existing natural pest control mechanisms. Intercropping is a cultural non-chemical agricultural practice where two or more crops are grown on the same field in a year with different cropping patterns. In this multiple cropping system, biodiversity and pest suppression are increased. Biodiversity can restore the natural elements of agro ecosystem because almost all favorable elements of natural enemies are available in diversified agro ecosystem. Energy intensive modern technology in agriculture is one of the vital causes for loss of biodiversity. In intercropping system biological pest control method can be ensured with higher level of crop diversity instead of energy intensive agriculture. Intercropping provides different benefits on pest management with two available hypotheses or mechanism. One of the hypotheses is the ‘resource concentration hypothesis’ and another is the ‘natural enemies hypothesis’. Intercropping, directly and indirectly, influences to increase biodiversity which results in reduction of pest densities in crop fields. As a result, less expense for use of pesticide is required and finally higher yield also add some financial benefits. Intercropping system utilizes inherent ability of plant to protect pests. Therefore further knowledge about genotypic crop diversity, diversity of natural enemies, chemically-mediated mechanisms of Volatile Organic Compounds (VOCs) will be effective for further improvement of intercropping system for greater benefits.
Key Words: Biodiversity, Intercropping, Poly culture, Pest management
HOW TO CITE THIS ARTICLE
MLA
Mala, M. et al. “Importance of intercropping for biodiversity conservation.” Journal of Science, Technology and Environment Informatics 10(02) (2020): 709-716.
APA
Mala, M., Mollah, M. M. I. and Baishnab, M. (2020). Importance of intercropping for biodiversity conservation. Journal of Science, Technology and Environment Informatics, 10(02), 709-716.
Chicago
Mala, M., Mollah, M. M. I. and Baishnab, M. “Importance of intercropping for biodiversity conservation.” Journal of Science, Technology and Environment Informatics 10(02) (2019): 709-716.
Harvard
Mala, M., Mollah, M. M. I. and Baishnab, M. 2020. Importance of intercropping for biodiversity conservation. Journal of Science, Technology and Environment Informatics, 10(02), pp. 709-716.
Vancouver
Mala, M, Mollah, MMI and Baishnab, M. Importance of intercropping for biodiverity conservation. Journal of Science, Technology and Environment Informatics. 2020 October 10(02): 709-716.
MLA
Mala, M. et al. “Importance of intercropping for biodiversity conservation.” Journal of Science, Technology and Environment Informatics 10(02) (2020): 709-716.
APA
Mala, M., Mollah, M. M. I. and Baishnab, M. (2020). Importance of intercropping for biodiversity conservation. Journal of Science, Technology and Environment Informatics, 10(02), 709-716.
Chicago
Mala, M., Mollah, M. M. I. and Baishnab, M. “Importance of intercropping for biodiversity conservation.” Journal of Science, Technology and Environment Informatics 10(02) (2019): 709-716.
Harvard
Mala, M., Mollah, M. M. I. and Baishnab, M. 2020. Importance of intercropping for biodiversity conservation. Journal of Science, Technology and Environment Informatics, 10(02), pp. 709-716.
Vancouver
Mala, M, Mollah, MMI and Baishnab, M. Importance of intercropping for biodiverity conservation. Journal of Science, Technology and Environment Informatics. 2020 October 10(02): 709-716.
Article Type: Research Article | No. 72, 2020 | Country: Bangladesh | pp. 717-726 | Open Access
Title: Effect of available solar irradiance on vertical farming in semi-open urban places
Authors: Moniruzzaman, M., Saha, K. K., Rahman, M. M. and Oliver, M. M. H.
DOI: http://dx.doi.org/10.18801/jstei.100220.72
Title: Effect of available solar irradiance on vertical farming in semi-open urban places
Authors: Moniruzzaman, M., Saha, K. K., Rahman, M. M. and Oliver, M. M. H.
DOI: http://dx.doi.org/10.18801/jstei.100220.72
Effect of available solar irradiance on vertical farming in semi-open urban places
Abstract
Building a vertical farm in unused residential and commercial spaces is a challenge. It is particularly hard to decide upon a space where varying degrees of lighting conditions may prevail at different times of a day. This experiment was focused on how innovative micro-irrigation technology could be coupled with vertical farms. In this regard, three storied racks were designed to accommodate multiple one-feet-square tubs large enough to hold five Indian spinach (BARI Puishak- 2) plants at a time. Sandy loam soil was used for farming along with recommended doses of fertilizers. Different lighting conditions (2- 145 W/m2 average solar irradiance) were employed on the fifth floor of an urban building. Drip emitters were coupled in the system for irrigation. The management allowed deficit was kept to a maximum of 50% of the readily available moisture below the field capacity. The results suggested that drip irrigation systems provide higher water productivity (up to 31.82 kg/m3) compared to the in-field conditions when BARI Puishak-2 is grown in vertical farming. Water productivity of spinach was improved by optimized set-up of a drip irrigation system. The study also concluded that vertical farming is only suitable for indoor places where plenty of direct sunlight or diffused sunlight (not below 70 W/m2) is available. The economic analysis suggests that vertical farms under direct sunlight can be made profitable (BCR>1) in the long run.
Key Words: Micro-irrigation, BARI Puishak-2, Lighting conditions, Drip emitters, Vertical farming, Water productivity, Benefit Cost Ratio (BCR).
Abstract
Building a vertical farm in unused residential and commercial spaces is a challenge. It is particularly hard to decide upon a space where varying degrees of lighting conditions may prevail at different times of a day. This experiment was focused on how innovative micro-irrigation technology could be coupled with vertical farms. In this regard, three storied racks were designed to accommodate multiple one-feet-square tubs large enough to hold five Indian spinach (BARI Puishak- 2) plants at a time. Sandy loam soil was used for farming along with recommended doses of fertilizers. Different lighting conditions (2- 145 W/m2 average solar irradiance) were employed on the fifth floor of an urban building. Drip emitters were coupled in the system for irrigation. The management allowed deficit was kept to a maximum of 50% of the readily available moisture below the field capacity. The results suggested that drip irrigation systems provide higher water productivity (up to 31.82 kg/m3) compared to the in-field conditions when BARI Puishak-2 is grown in vertical farming. Water productivity of spinach was improved by optimized set-up of a drip irrigation system. The study also concluded that vertical farming is only suitable for indoor places where plenty of direct sunlight or diffused sunlight (not below 70 W/m2) is available. The economic analysis suggests that vertical farms under direct sunlight can be made profitable (BCR>1) in the long run.
Key Words: Micro-irrigation, BARI Puishak-2, Lighting conditions, Drip emitters, Vertical farming, Water productivity, Benefit Cost Ratio (BCR).
HOW TO CITE THIS ARTICLE
MLA
Moniruzzaman, M. et al. “Effect of available solar irradiance on vertical farming in semi-open urban places.” Journal of Science, Technology and Environment Informatics 10(02) (2020): 717-726.
APA
Moniruzzaman, M., Saha, K. K., Rahman, M. M. and Oliver, M. M. H. (2020). Effect of available solar irradiance on vertical farming in semi-open urban places. Journal of Science, Technology and Environment Informatics, 10(02), 717-726.
Chicago
Moniruzzaman, M., Saha, K. K., Rahman, M. M. and Oliver, M. M. H. “Effect of available solar irradiance on vertical farming in semi-open urban places” Journal of Science, Technology and Environment Informatics 10(02) (2020): 717-726.
Harvard
Moniruzzaman, M., Saha, K. K., Rahman, M. M. and Oliver, M. M. H. 2020. Effect of available solar irradiance on vertical farming in semi-open urban places. Journal of Science, Technology and Environment Informatics, 10(02), pp. 717-726.
Vancouver
Moniruzzaman, M, Saha, KK, Rahman, MM and Oliver, MMH. Effect of available solar irradiance on vertical farming in semi-open urban places. Journal of Science, Technology and Environment Informatics. 2020 November 10(02): 717-726.
MLA
Moniruzzaman, M. et al. “Effect of available solar irradiance on vertical farming in semi-open urban places.” Journal of Science, Technology and Environment Informatics 10(02) (2020): 717-726.
APA
Moniruzzaman, M., Saha, K. K., Rahman, M. M. and Oliver, M. M. H. (2020). Effect of available solar irradiance on vertical farming in semi-open urban places. Journal of Science, Technology and Environment Informatics, 10(02), 717-726.
Chicago
Moniruzzaman, M., Saha, K. K., Rahman, M. M. and Oliver, M. M. H. “Effect of available solar irradiance on vertical farming in semi-open urban places” Journal of Science, Technology and Environment Informatics 10(02) (2020): 717-726.
Harvard
Moniruzzaman, M., Saha, K. K., Rahman, M. M. and Oliver, M. M. H. 2020. Effect of available solar irradiance on vertical farming in semi-open urban places. Journal of Science, Technology and Environment Informatics, 10(02), pp. 717-726.
Vancouver
Moniruzzaman, M, Saha, KK, Rahman, MM and Oliver, MMH. Effect of available solar irradiance on vertical farming in semi-open urban places. Journal of Science, Technology and Environment Informatics. 2020 November 10(02): 717-726.