. Circular. Insect pests; Insect pests. METHODS OF CONTROLLING TOBACCO INSECTS. REMEDIAL MEASURES. Even though flea-beetles do gain access to the plant beds in great numbers they can be controlled economically. Nearly all the severe loss of 1907 could have been averted had the growers known the proper remedy to apply. The writer has found the following insecti- cide very efficient in killing the beetles and not at all injurious to the plants: Arsenate of lead i in paste form, or £ pound powdered form). 1 Water 12 to Hi Mix the arsenate of lead thoroughly in a small quantity of
. Circular. Insect pests; Insect pests. METHODS OF CONTROLLING TOBACCO INSECTS. REMEDIAL MEASURES. Even though flea-beetles do gain access to the plant beds in great numbers they can be controlled economically. Nearly all the severe loss of 1907 could have been averted had the growers known the proper remedy to apply. The writer has found the following insecti- cide very efficient in killing the beetles and not at all injurious to the plants: Arsenate of lead i in paste form, or £ pound powdered form). 1 Water 12 to Hi Mix the arsenate of lead thoroughly in a small quantity of water. pour into the tank, and add sufficient water to make the desired quantity; then apply to the bed with a spray pump until every leaf is thor- oughly dampened. Two very good spray pumps are illustrated in figures 5 and 6. If a heavy rain falls soon after the application is made it may be neces- sary to make a second application; but it must be remembered that arsenate of lead will stick to the foliage much longer than Paris green, and will not be greatly dissipated by a light shower. After the plants have grown consider- ably it will be necessary to spray the bed again if flea-beetles are still numer- ous, for the new foliage will, of course, not be protected by the first applica- tion. If flea-beetles are very numerous at the time of setting tobacco, the plants can be protected for several days by dipping the tops, just before setting, in the arsenate of lead spray recommended for use upon the plant bed. If plants are not dipped at setting time and if the flea-beetles appear in the fields in inju- rious numbers, apply the arsenate of lead, in the strength recommended above, with a knapsack sprayer (fig. 6). With this sprayer one man can spray from 5 to 6 acres of young tobacco in a day at a cost of from 25 to 35 cents an acre for arsenate of lead. Tobacco growers as a rule pay too little attention to protecting their plant beds from insect attack. The result is that mor
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsectp, bookyear1904
