Preplant soil fumigation increases head weights in California lettuce
AuthorsJ. D. Radewald
P. G. Mowbray
A. O. Paulus
J. M. Rible
Authors AffiliationsJohn D. Radewald is Extension Nematologist, University of California, Riverside; Phillip G. Mowbray is Farm Advisor, Riverside County; Albert O. Paulus is Extension Plant Pathologist, University of California, Riverside; Fujio Shibuya is Laboratory Technician, University of California, Riverside; John M. Rible is Extension Technologist, University of California, Riverside.
Hilgardia 23(8):11-13. DOI:10.3733/ca.v023n08p11. August 1969.
Preplant bed fumigation of lettuce soils significantly increased lettuce head weights in three Palo Verde field trials with DD and Telone. Treatments also produced trends toward more uniform and earlier crop maturity (although differences were not statistically significant). The reasons for the beneficial responses are not completely understood, but the responses were at least partly accounted for by the control of two nematodes, Tylenchorhynchus clarus and Meloidognye hapla.
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