Apple rust . number of leaves. The two small, oldestleaves were removed before counts were made. These de-tailed field counts were made on twenty-five trees, and in-cluded about 320 leaf clusters, of which one-half were terminalgrowths of twigs. Ten of the trees were unsprayed, five hadbeen sprayed with lime-sulphur, five with Bordeaux mix-ture, and five with atomic sulphur. The rust was quite wellcontrolled on the sprayed trees. A sample page of the records on these leaves is shown: Tree No. 323. Twig No. 2—Check. (See footnote *) Treatment—Lime-sulphur—Block F. No. of leaft-— 123456789Termin
Apple rust . number of leaves. The two small, oldestleaves were removed before counts were made. These de-tailed field counts were made on twenty-five trees, and in-cluded about 320 leaf clusters, of which one-half were terminalgrowths of twigs. Ten of the trees were unsprayed, five hadbeen sprayed with lime-sulphur, five with Bordeaux mix-ture, and five with atomic sulphur. The rust was quite wellcontrolled on the sprayed trees. A sample page of the records on these leaves is shown: Tree No. 323. Twig No. 2—Check. (See footnote *) Treatment—Lime-sulphur—Block F. No. of leaft-— 123456789Terminal Rust spots 9 22 9 4 0 0 0 0 8 Growth Date fallen 7-30 7-30 10-3 10-30 10-30 10-3- Side Spur Rust spots 8 17 16 0 0 0 No. 10 Date 10-3 7-30 10-3 7-30 *This was a check twig on a sprayed No. 1 is the oldest. The data from these records has been carefully tabulatedand is given in condensed form as Table II. This table isarranged to show the number of leaves having one rust spot,..
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Keywords: ., bookcentury1900, bookdecade1910, bookidapplerust154, bookyear1915
