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Design and evaluation of slow sand and UV filters for effective nutrient recycling in closed soilless cultivation

Indian Agricultural Research Journals

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Title Design and evaluation of slow sand and UV filters for effective nutrient recycling in closed soilless cultivation
 
Creator SINGH, KAMAL GURMIT
SINGH, ANGREJ
SHAH, AAMIR ISHAQ
SINGH, GURPARTEET
 
Subject Closed soilless cultivation, Leachate recirculation, Pathogen removal efficiency, Slow sand filter, UV filter
 
Description Nutrient and water use efficiency can be improved in soilless cultivation systems by recirculating the leachate. However, untreated leachate contains particulate matter that may clog drip emitters and root pathogens which can pose a threat to the crop health if reintroduced into the system. To address this issue, an ultraviolet (UV) filter was developed to complement the slow sand filter to enhance its treatment efficiency in removing root pathogens. The experiment was conducted during 2019 and 2020 at Punjab Agicultural University, Ludhiana, Punjab to assess the effectiveness of the UV filter in removing pathogens, specifically Dickey zeae and Xanthomonas, from the leachate in a closed soilless cultivation system. Pre and post-treatment measurements were made 40 days after transplanting (DAT) and 80 DAT to evaluate the efficiency of the UV filter. The results revealed that combined UV and slow sand filters substantially treated the raw leachate. At 40 DAT, the pathogen removal efficiency was 94.8%, while it was 92% at 80 DAT. The findings highlight the importance and effectiveness of using the UV filter as an additional treatment step in closed soilless cultivation systems with significant improvement in the overall removal efficiency of root pathogens from the leachate.
 
Publisher Indian Council of Agricultural Research
 
Date 2024-05-15
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
 
Format application/pdf
application/pdf
 
Identifier https://epubs.icar.org.in/index.php/IJAgS/article/view/143652
10.56093/ijas.v94i5.143652
 
Source The Indian Journal of Agricultural Sciences; Vol. 94 No. 5 (2024); 564–568
2394-3319
0019-5022
 
Language eng
 
Relation https://epubs.icar.org.in/index.php/IJAgS/article/view/143652/54538
https://epubs.icar.org.in/index.php/IJAgS/article/view/143652/54539
 
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