Short Communications

Aqueous ammonia as a soil steriliser for use in greenhouses

Published in: South African Journal of Plant and Soil
Volume 17, issue 1, 2000 , pages: 53–55
DOI: 10.1080/02571862.2000.10634866
Author(s): H. van Zyl, Republic of South Africa, WilmaG. Gaum, Republic of South Africa

Abstract

Aqueous ammonia was used to determine its effectiveness as a soil steriliser for use in glasshouses and to see if it can be used as an alternative sterilising method. A sandy soil was used to examine the effect of aqueous ammonia on the numbers of weeds, nematodes and microbes. The aqueous ammonia was applied to 1 kg of soil in doses of 2, 4, 6 and 8 ml with three contact periods of 24,48 and 72 hours for each dose. The application of ammonia water to the soil produced a clear decline in the numbers of weeds, nematodes and microbes. There was a direct correlation between the decline in numbers with an increase in dosage and time.

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