Block · one region of the page, as the scanner read it. It may hold a whole story, part of one, several, or an advertisement; stitching blocks into articles is the next step. Text is supplied OCR.
Page 2 · column 6 of 8 · from the scan, no model involved
Is the alfalfa weevil becoming resistant to Heptachlor?
A - There is every indication that the alfalfa weevil has developed resistance to Heptachlor. This is substantiated by tests on resistance by Dr. J. L. Bishop, toxicologist at VPI, and by the fact that spring treatments with Heptachlor failed to control the alfalfa weevil larvae and adults this year.
Q - Has the alfalfa weevil changed its habits? A - Very definitely, yes. The most significant change is the development of a phase with more than one generation per year and larvae causing damage throughout the growing season. We had indications of this as early as two years ago in counties of lower elevation, expecially Cumberland, Campbell. Appomattox and Prince Edward. This is now a well established fact in a triangle of counties from Patrick to Greensville to Rockingham, and all counties east of the Blue Ridge chain.
Q - Did the fall treatment with Haptachlor fail this year? ■" 1 '' h i ■ • ■' . <ri/
A - The fall Heptachlor treatment in fertilizer or in granular form failed to control the alfalfa weevil In all counties mentioned above. In many counties, for ex! ample — Lee and Scott in i the western part of Virgin1 ia — the fall treatment was just as effective this year as ever in any area in Virginia. Warnings have been given to alfalfa growers not to expect control with the fall treatment of Heptachlor next year as it is just a matter of spreading of resistant weevils to these areas.
88.6%