Wisconsin State Cranberry Growers Association / Wisconsin State Cranberry Growers' Association. Forty-seventh annual meeting, Wisconsin Rapids, Wisconsin, December 14, 1933. Forty-seventh summer convention, Wisconsin Rapids, Wisconsin, August 8, 1933
Goldsworthy, Vernon C.
Cranberry problems of 1933, pp. 15-19 PDF (1.5 MB)
WISCONSIN CRANBERRY GROWERS' ASSOCIATION 15 same usually holds good after the water-cure. If each grower will take careful notes of water temperatures and the state of the weather, after a few trials he should learn to time his flooding so as to sustain no hook injury. Apparently the best time to flood is to have the twelve hours all in daylight. Vines do not supply oxygen to them- selves in darkness under water and not as much in dark colored water as in water that is clear. Further testing of fuel oil as a weed killer has demonstrated that some of the most feared weeds can be controlled by its use. It is not yet quite clear whether the No. 1 or the No. 3 oil is best. My tests favor the No. 3, but some growers think the No. 1 is better. We have much more to learn about the oils and their application, but one thing seems certain: The soil must be dry when oil is applied. Rain soon after or flooding 24 hours after application, apparently does not in- fluence results. Growers using the stamping method of setting vines on peat are now getting splendid results, by using plenty of good vines carefully distributed and carefully stamped in. The method of cutting vines into very short lengths and puddling in with a fork usually gives a good catch, but water must be held very high for a long period and the plants seem to make a short spindling growth the first year. The past three years have shown some very excellent fields planted by the dibble method and by the single blade stamper through sand. If the dibble is used, great care should be taken that the plants do not heave by frost. Heaving breaks the roots and retards the next year's growth. There seems to be little choice between the dibble and the single blade stamp when planting through sand. In planting through sand with the dibble, the best looking fields have been planted in squares 6 x 6 inches. I would suggest that someone try planting 5 x 8 inches. This will take a few less vines and will give some space for the inducement of runners and also some space to walk in for the first year's weeding. A small area planted 5 x 8 in our nursery gave ex- cellent results in vine growth. I am pleased that so many growers who have remade marsh or made new in the past few years, have made level beds getting out all bad grass roots before planting, and have selected vigorous vines get- ting them in early. Money spent for these things is money spent to good advantage. It is better to construct well, even if less acreage must be built. Because of the severe injury to vines in many marshes, by the al- most unprecedented cold of late Nov. and of Dec. last season. there will undoubtedly be a reaction toward earlier flooding this fall. I hope growers will not go back to the old method of early and deep winter flooding. CRANBERRY PROBLEMS OF 1933 VERNON C. GOLDosWORTHY Due to the last two or three very dry years, insects in Wisconsin cranberry marshes have increased very rapidly. Take the leaf hop- pers (Euscelis striatulus, Euscelis vaccinii) for example, the onlv known carriers of the cranberry false blossom virus. My records (I now have a complete record of the leaf hopper population on every cranberry bog in the state) show that since 1931 the leaf hopper pop- ulation on some marshes has increased many times. This means that most likely the false blossom is going to spread very rapidly on those
This material may be protected by copyright law (e.g., Title 17, US Code).| For information on re-use, see http://digital.library.wisc.edu/1711.dl/Copyright