. Cranberries; : the national cranberry magazine. Cranberries. 12. Reflow 17 days, starting- by September 25âcontrols fruitworm and sawfly. Remember that black-headed fireworm larvae are killed more easily by flooding- when near maturity. Short floods for big â worms are safer and more effec- tive; long- floods against smaller larvae. 6-day flood in late September, even with late berries still on vines, should be considered if reg- ular sanding program is aband- oned. Should be done every 2nd or 3rd fall to prevent development of girdler infestations. Also remember that reflows, particularly a
. Cranberries; : the national cranberry magazine. Cranberries. 12. Reflow 17 days, starting- by September 25âcontrols fruitworm and sawfly. Remember that black-headed fireworm larvae are killed more easily by flooding- when near maturity. Short floods for big â worms are safer and more effec- tive; long- floods against smaller larvae. 6-day flood in late September, even with late berries still on vines, should be considered if reg- ular sanding program is aband- oned. Should be done every 2nd or 3rd fall to prevent development of girdler infestations. Also remember that reflows, particularly after June 1, tend to increase fruit rots, and also may smother developing blossoms. Flow on and off during night. I still like the concentrate spray rig for the control of most cran- berry insects. We have a safe recommendation for its use against all pests except fruitworms, where we have run into blossom and berry blasting with Malathion, and para- thion is too dangerous to recom- mend for general grower use. We are working on this problem with materials that I hope will over- come this weakness in controlling fruitworm with grower operated concentrate rigs. Diazinon might be tried, but we have had some trouble with burning when using the EC in concentrates and haven't tried the wettable, and we don't like Diazinon for fniit- worm as well as some other insect- icides anyway. Relative efficiency of spray nozzles on concentrate sprayers has not been worked out on cran- berries, but results on other crops indicate the hollow cone on a boom is the most efficient unit because of thorough coverage and even distribution that it gives. APRIL WARMER IN MASS. FIRST 3 WEEKS April to the 21&t had been warm- er than normal in Massachusetts by a total of 34 degrees. No frost. FOR FLUMES PREFABRICATED SEE RUSSELL A. TRUFANT - HYDRAULIC CONSULTANT PREFABRICATED FLUMES BOG RAILROADS UNION 6-3696 North Carver, Mass. warnings had been sent out from the State Bog to that date, al- though t
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