Cucumbers are produced in integrated hydroponic and aquaculture systems (aquaponics). Aquaponics balances pH for plants, fish, and nitrifying bacteria. Nitrification prevents buildup of toxic waste ammonia by conversion to nitrate (NO3-)- nitrogen (N). The pH for hydroponic cucumbers (5.5-6.0) and nitrification (7.5-9.0) requires reconciliation to improve systems integration. Cucumbers were grown at pH of 5.0, 6.0, 7.0, and 8.0 with additional foliar sprays at pH 7.0 and 8.0. Plant shoot dry weight, length, N, and phosphorus (P) content at 14 DAT were similar from pH 5.0 to 7.0, but reduced at pH 8.0. Nutrient solution and shoot dry matter Mn and Fe decreased as pH increased. Foliar sprays had no effect on cucumber fruit yield. Early yield was higher at pH 5.0 compared to pH 8.0 but total yield was unaffected by pH. Cucumbers in recirculating culture may be maintained at pH levels more optimum for nitrification (7.5-8.0) except during production for early season markets.
Member of
Contributors
Publisher
Taylor & Francis
Date Issued
2008-11
Note
Language
Type
Genre
Extent
15 p.
Subject (Topical)
Identifier
1925721
Additional Information
Cucumbers are produced in integrated hydroponic and aquaculture systems (aquaponics). Aquaponics balances pH for plants, fish, and nitrifying bacteria. Nitrification prevents buildup of toxic waste ammonia by conversion to nitrate (NO3-)- nitrogen (N). The pH for hydroponic cucumbers (5.5-6.0) and nitrification (7.5-9.0) requires reconciliation to improve systems integration. Cucumbers were grown at pH of 5.0, 6.0, 7.0, and 8.0 with additional foliar sprays at pH 7.0 and 8.0. Plant shoot dry weight, length, N, and phosphorus (P) content at 14 DAT were similar from pH 5.0 to 7.0, but reduced at pH 8.0. Nutrient solution and shoot dry matter Mn and Fe decreased as pH increased. Foliar sprays had no effect on cucumber fruit yield. Early yield was higher at pH 5.0 compared to pH 8.0 but total yield was unaffected by pH. Cucumbers in recirculating culture may be maintained at pH levels more optimum for nitrification (7.5-8.0) except during production for early season markets.
This post print article is an electronic version of an article published by Taylor & Francis in Journal of Plant Nutrition as Tyson, R.V., E. H. Simonne, D. D. Treadwell, M. Davis, J. M. White (2008) Effect of Water pH on Yield and Nutritional Status of Greenhouse Cucumber Grown in Recirculating Hydroponics. Journal of Plant Nutrition, 31(11) 2018‐2030 doi:10.1080/01904160802405412 Journal of Plant Nutrition is available online at: http://www.informaworld.com/openurl?genre=article&issn=01904167&volume=31&issue=11&spage=2018
Florida Atlantic University. Harbor Branch Oceanographic Institute contribution #1782.
Date Backup
2008-11
Date Text
2008-11
DOI
10.1080/01904160802405412
Date Issued (EDTF)
2008-11
Extension
FAU
FAU
admin_unit="FAU01", ingest_id="ing5664", creator="creator:SPATEL", creation_date="2010-04-15 11:19:17", modified_by="super:FAUDIG", modification_date="2014-02-10 08:48:05"
IID
FADT1925721
Issuance
single unit
Person Preferred Name
Tyson, R. V.
creator
Physical Description
15 p.
Title Plain
Effect of water pH on yield and nutritional status of greenhouse cucumber grown in recirculating hydroponics
Origin Information
Taylor & Francis
2008-11
single unit
Title
Effect of water pH on yield and nutritional status of greenhouse cucumber grown in recirculating hydroponics
Other Title Info
Effect of water pH on yield and nutritional status of greenhouse cucumber grown in recirculating hydroponics