Chinese cabbage plants grown in flats containing either aluminum foil mulch or no mulch cover were uniformly infested with a single apterous adult Myzus persicae (Sulzer) and exposed in a greenhouse to a free-flying population of the parasite Aphidius ervi (Haliday). Aphid fecundity. plant growth, and temperature were greater in reflective mulch plots. Aphid pardSitism was lower over mulched plots until foliage growth obscured the mulch. Later. parasitism was more frequent in mulched plots. The effects upon parasitism, fecundity. and microclimate may explain instances where aluminum mulches have not reduced aphid populations.
Zalmon, Frank G. and Cranshaw, Whitney S.
"Effects of Aluminum Foil Mulch on Parasitism and Fecundity of Apterous Myzus Persicae (Homoptera: Aphididae),"
The Great Lakes Entomologist, vol 14
Available at: https://scholar.valpo.edu/tgle/vol14/iss4/1