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The use of high‐pressure sodium discharge lamps as an aid to obtaining clubroot infection
Author(s) -
BUCZACKI S. T.
Publication year - 1976
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1976.tb00575.x
Subject(s) - sodium vapor lamp , clubroot , mercury (programming language) , biology , gas discharge lamp , sodium , greenhouse , high pressure , horticulture , materials science , chemistry , metallurgy , programming language , physics , optics , brassica , engineering physics , engineering , electrode , computer science
SUMMARY A high‐pressure sodium discharge lamp was more effective than a high‐pressure mercury discharge lamp of identical wattage in stimulating the production of clubroot symptoms on cabbage seedlings growing in infested soil in a glasshouse. Although the maximum total radiation from the sodium lamp was 3*2 times that from the mercury lamp, the differential effects were also observed on plants subjected to identical radiation from either lamp. It was considered that high‐pressure sodium discharge lamps could be a valuable aid to clubroot experiments made in glasshouses during the winter months or under conditions with restricted global radiation such as controlled‐environ‐ment cabinets.