Studies on the yield promotive effectiveness of the protection of greenhouse tomatoes, grown on reused rockwool, against soil-borne plant pathogens
2005
Slusarski, C. (Instytut Warzywnictwa, Skierniewice (Poland))
Disinfectants such as QAC+Chx and PAA+HP used for disinfestation of rockwool slabs heavily infested with Pnn, significantly reduced the incidence and severity of Phytophtora foot and root rot of tomato, and caused a significant or marked increase in the marketable fruit yield. With regard to the influence on fruit yield, chemical disinfestation of reused rockwool slabs, integrated with additional application of biocontrol agents or fungicides revealed to be more effective than using disinfectants alone. The conducted differential calculation of the costs of the evaluated methods of greenhouse tomato protection from soil-borne diseases indicates, that the economic efficacy of repeated tomato growing in the same rockwool slabs, even without disinfestation, may be substantially higher in comaprison with yearly replecement of slabs. Chemical disinfestation of used rockwool integrated with using of biocontrol agents or fungicides revealed to be particularly competitive in relation to the replacement of the rockwool slabs each year
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