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Proceedings of the International Plant Propagator's Society

Vol. 34


Lin Taber

pp: 471-474

The 1984 Southern Region Question Box was moderated by Lin Taber, Glen Saint Mary, Florida.

LARRY EDWARDS: I would like more information on crop oil and surfactants. Do these materials have an effect on the chemical with which they are being used?

BRYSON JAMES: They are similar to dormant spray oils and, in general, are nonphytotoxic. They will mix with water. Vegetable oils have been tried, but crop oils are preferred. Ordinary household detergents usually do not interfere with chemical activity if they are nontoxic. Those with high phosphate content should not be used; pH of the solution makes a difference. A spreader-sticker should also be used with most tank mixes. These materials actually have a sticking effect as well as just making water wetter.

TED RICHARDSON: I have found that, in contrast to earlier comments, a surfactant works just as well with Poast as a crop oil.

GARY TAYLOR: Is there a danger that herbicides will affect rooting of the cuttings?

CARL WHITCOMB: In general, those

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