OCR Text |
Show ter the leaves appear they can be applied ap-plied .to the trunk and main limbs with a brush. The best and cheapest remedy rem-edy is prevention by keeping all trees vigorous. In the case of apple, pear, and other trees which do not exude gum to any extent, it is a question of judgment whether it will be possible to save trees attacked by this insect. If the infestation is rather severe, it usually indicates that the tree is beyond hope of saving. Individual branches on trees may often show attack by this insect and should bo promptly removed re-moved and burned to prevent further increase and spread of the borer. BORER IS INJURIOUS TO ORCHARD TREES Work of Insect Is Often Detected During Pruning Operations in Cold Weather. The work of the fruit tree bark beetle, or shot-hole borer, is often first detected on trees during pruning operations op-erations in winter. Leonard Hasemun of the Missouri College of Agriculture recommends that steps be taken to eliminate the pest as soon after' it is discovered as possible. The shot-hole borer as a rule attacks trees which art in a state of decline from any Muse. It winters as a grub in galleries gal-leries just beneath the bark. Peach trees attacked by this insect and which will still have vitality to exude gum at the injured points may in some cases be brought into' condition- by severe pruning and an application, as the buds swell in the spring, of an effective effec-tive wash. One gallon of commercial lime sulphur sul-phur to eight gallons of water as used for the San Jose scale during the dormant dor-mant season is quite effective. An oil spray as recommended for the scale is also beneficial. Stiff whitewash with a pint of crude carbolic acid added to each ten gallons is also used. These washes may be applied as sprays before be-fore the buds open, but where It la necessary to repeat the application af- |