. Circular. Insect pests; Insect pests. 12 HOW TO CONTROL THE PEAR THRIPS. oil emulsion Avith commercial tobacco extract No. 1, added at the rate of 1-60, and the cost of the three applications was $, the labor required in spraying being three men at $2 per day and one team at $ per clay, making a total of $ per day, or a total of $51 for the six days; gasoline for the engme cost $; plowing and cross plowing the previous fall, $, making a total cost of $ for the combined treatment of plowing and spraying the 5J acres, or $ per acre, an average of $0,449 per tr
. Circular. Insect pests; Insect pests. 12 HOW TO CONTROL THE PEAR THRIPS. oil emulsion Avith commercial tobacco extract No. 1, added at the rate of 1-60, and the cost of the three applications was $, the labor required in spraying being three men at $2 per day and one team at $ per clay, making a total of $ per day, or a total of $51 for the six days; gasoline for the engme cost $; plowing and cross plowing the previous fall, $, making a total cost of $ for the combined treatment of plowing and spraying the 5J acres, or $ per acre, an average of $0,449 per tree. The yiel4 from this plat was 45 tons of green prunes, making an average yield of tons per acre, or pounds per tree. The prunes when dried averaged 54 to the pound, giving a commercial value for the plat of $1,710, or a value of $ per acre, or an average of $2,948 per tree, as the prunes were sold on a 2i-cent basis for dried prunes averaging 80 to a pound. Plat II.—The rest of the orchard, comprising 10§ acres, and which onlv had the plowing and cross plowing in the fall of 1908, at the cost. Fig. 7.—Diagram showing yield in green prunes per acre upon the sprayed, plowed, and check blocks, Landon prune orchard, 1909: a, Sprayed and plowed, boxes, value $ x)er acre; b, plowed block, boxes, value $ per acre; c, check block, 7 boxes, value $ per acre. (Original.) of $5 per acre, or $0,046 per tree, yielded 21 tons of green prunes, or an average of tons per acre, or pounds per tree, giving a commercial value of the plat as $798, or a value of $ per acre, averaging $0,692 per tree. Plat III, checlc.—This plat, embracing 5 acres of the prune orchard belonging to Mr. F. Cottle, and immediately adjoining the Landon orchard and of the same kind of soil and with similar trees in regard to size and pre^dous care, received no treatment for thrips. The total yield was 1,750 pounds of green prunes, or an average yield o
Size: 2868px × 872px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsectp, bookyear1904
