. Agriculture for beginners. 131 you see the effect of theborers activity. These borers often girdle and therebykill the tree. Fig. 132 shows the perfect state of theinsect. The eggs are laid on the peach or plum trees nearthe ground. As soon as the larva emerges, it bores into Fig. 131. Borer Signs around Base of Peach TreeFrom Hodges Nature Study and Life, Ginn & Company the bark and there remains for months, passing throughthe pupa stage before it comes out to lay eggs for anothergeneration. Treatment. If there are only a few trees in the orchard,digging the worms out with a knife is the be
. Agriculture for beginners. 131 you see the effect of theborers activity. These borers often girdle and therebykill the tree. Fig. 132 shows the perfect state of theinsect. The eggs are laid on the peach or plum trees nearthe ground. As soon as the larva emerges, it bores into Fig. 131. Borer Signs around Base of Peach TreeFrom Hodges Nature Study and Life, Ginn & Company the bark and there remains for months, passing throughthe pupa stage before it comes out to lay eggs for anothergeneration. Treatment. If there are only a few trees in the orchard,digging the worms out with a knife is the best way ofdestroying them. You can know of the borers presenceby the exuding gum often seen on the tree trunk. ORCHARD, GARDEN, AND FIELD INSECTS 139 EXERCISE How many apples per hundred do you find injured by the codlingmoth ? Collect some cocoons from a pear or apple tree in winter, placein a breeding cage, and watch for the moths that come out. Do youever see the woodpecker hunting for these same cocoons ? Can you find. Fig. 132. Peach-Tree Borers, Male and Female Female with broad yellow band across abdomen. (From Hodges Nature Study and Life, Ginn & Company.) cocoons that have been emptied by this bird? Estimate how manyhe considers a days ration. How many apples does he thus save ? Watch the curculio lay her eggs in the plums, peaches, or per cent of fruit is thus injured? Estimate the damage. Let the school offer a prize for the greatest number of tent cater-pillar eggs. Watch all trees, such as apple, wild and cultivatedcherry, oak, and many others. I40 AGRICULTURE FOR BEGINNERS Make a collection of insects injurious to orchard fruits, showing ineach case the whole life history of the insect, eggs, larva, pupa,and the mature insects. SECTION XXXI —GARDEN AND FIELD INSECTS The Cabbage Worm of the early spring garden is afamiliar object, but you may not know that the innocent-looking little white butterfly hovering about the cabbagepatch is laying eggs
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