Annual Report of the Wisconsin State Horticultural Society (Volume 20)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1890 edition. Excerpt: ...ounce to nine gallons, and found it a little too strong. The formula we now recommend is one pound to two hundred gallons of water, or an ounce to twelve and a half gallons. Prof. Goff--We must not injure the foliage; a little injury to the foliage will do as much harm as the codling moth. I have already mentioned the time it should be applied, which is just as soon as the petals have all fallen, and it will be well to repeat the application two weeks later. In regard to the destruction of the curculio the reports differ. Some have had very excellent success. Mr. Weed, of Illinois, reports very good results from spraying cherry trees for the curculio. In 1888 Prof. Cook, of Michigan, had good success in spraying plum trees, but the past season I think he feels less confident in regard to it. Mr. Doty--As to the strength of the solution, the foliage of different trees varies in hardiness. The trees that will bear a stronger solution and those that require a weaker solution should be known. I would like to know if Prof. Goff can give us any idea as between peach, plum, apple and pear trees, which will bear the stronger and which require the weaker solution. Prof. Goff--The foliage of the peach is more sensitive to injury than that of the other, trees mentioned, and that of the cherry is considered the most resistent. For the peach I would not use one pound to two hundred gallons. The plum, pear and apple I think are about alike. Mr. Kellogg--Some varieties of apples will not injure as much as others. In spraying an orchard some trees I pass, and some others I give a second spraying the same day, but you.say you only want to spray once in two weeks, and I think that is so unless you have a storm which washes the solution off. J. M. Smith--When I...