Cutworm

“ See—here is one now.” He uncovered a small gray worm about an inch long and crushed it with his hoe.
“Let’s see!” said Ben excitedly, and he and Ann began to examine their own allotments.
“They work at night and dig in under the soil when the sun comes out,” Jo explained. “They bite the young plant off just where it goes into the ground. Whenever you find a plant lying on the ground you know that a cutworm has eaten it off and he is hiding under the dirt a few inches away. You’ll have to dig each one up and kill it before he does any more damage. ”

“ The cutworm is around early in the season ready to cut the flower stalks of the hyacinths. When the peas come on a bit later, he is ready for them. A very good way to block him off is to put paper collars, or tin ones, about the plants. These collars should be about an inch away from the plant.
"Of course, plant lice are more common. Those we see are often green in colour. But they may be red, yellow or brown. Kerosene emulsion is the medicine for plant lice. Lice are easy enough to find since they are always clinging to their host. ”

“ Distributed a few feet apart between rows of garden plants at nightfall, they have attracted and killed enough Cutworms often to save a large proportion of the crop; if the bunches can be covered with a shingle, they will keep fresher much longer. The fresher the baits, and the more thoroughly the baiting is done, the more Cutworms one can destroy. However, it may sometimes happen that a sufficient quantity of such green succulent plants cannot be obtained early enough in the season in some localities. ”

“ The cutworms will congregate under these and can then be killed by any means that suggests itself. Hunting for them at night, when they are feeding, with a lantern or flashlight, is another method of reducing their numbers. ”

“ They are usually dark-colored, greasy-looking caterpillars which spend most of their time, when they are not eating, just underneath the surface of the ground. They cut off the plants by eating through the stems. Several different measures should be in operation at the same time to rid a garden of cutworms. One of the most effective is the use of poisoned bait, but this is not advisable when live stock have access to the garden. The bait should be strewed liberally close to the plants. Shingles or thin boards may be placed on the surface of the soil. ”

“ Cucumbers and melons, as I have before said, are prone to be preys of the cutworms, squash bugs, striped beetles, and lice or aphis. You know treatment for cutworms and lice. The squash bug may be destroyed by hand. Sometimes when bits of sticks are placed on the ground the bugs will crawl under them. Next morning a small harvest of bugs can be killed. The squash bug lays its eggs on the under surface of the plant's leaves. ”

“ The Bulletins named above give detailed information in reference to spraying and fumigation.
CUTWORMS
(Consult Bulletin 52, Department of Agriculture, Ottawa.)
Cutworms are the larvæ of medium-sized brown moths that fly at night. There are many species of cutworms, all of which are destructive to some forms of plants or grasses, grains, and vegetables.
The larvæ are rather thick, naked, worm-like forms. They burrow into the ground, but emerge at night to feed by cutting through the stems of tender plants or by feeding upon the leaves. ”

“ Cutworms, too, have caused much devastation the past few seasons—usually these are troublesome to transplanted things, mainly cabbage, peppers and tomatoes, but last year they destroyed beans and other plants impartially, causing much loss. ”

“ The father proceeded to pull up worms for his gaping brood in a manner so irritated and strenuous that I wondered whether he had had a “family jar,” or was only worn out with anxiety and overwork. It is a huge task to feed one baby robin alone, who can eat sixty-eight angleworms a day, [50] or one hundred and sixty-five cutworms. ”

“ If the ground has been properly prepared, the worms will have had but little to eat for several days and they will thus seize the first opportunity to appease their hunger upon the baits, and wholesale destruction will result. The baits should always be applied at this time wherever Cutworms are expected. ”

“ Fill the bottom, a, with gravel or bits of brick, for drainage. Plug the hole in the inside pot. Fill the spaces between, c, with earth, and in this set the Cuttings. Water may be poured into the inner pot, b, to supply the moisture.
Cutworms. Probably the remedy for Cutworms most often practiced in gardens, and which cannot fail to be effective when faithfully carried out, is hand-picking with lanterns at night or digging them out from around the base of the infested plants during the day. Bushels of Cutworms have been gathered in this way, and with profit. ”

“ The spraying seems to be more effective on cucumbers than on melons.
Cut-worm:—The cut-worm is perhaps the most annoying of all garden pests. Others do more damage, but none is so exasperating. He works at night, attacks the strongest, healthiest plants, and is content simply to cut them off, seldom, apparently, eating much or carrying away any of the severed leaves or stems, although occasionally I have found such bits, especially small onion tops, dragged off and partly into the soil. In small gardens the quickest and best remedy is hand-picking. ”

“ Others, and this is the most common mode of parasitism, attack the insect in its larva state; others, in the pupa state, and still others in the perfect, or imago state. Dr. Leidy has shown that the wood-devouring species of beetle, Passalus cornutus, and some Myriopods, or "thousand legs," are, in some cases, tenanted by myriads of microscopic plants and worms which luxuriate in the alimentary canal, while the "caterpillar-fungus" attacks sickly caterpillars, filling out their bodies, and sending out shoots into the air, so that the insect looks as if transformed into a vegetable. ”

“ Rose-bugs are also eaten greedily by domesticated fowls; and when they become exhausted and fall to the ground, or when they are about to lay their eggs, they are destroyed by moles, insects, and other animals, which lie in wait to seize them. Dr. Green informs us that a species of dragon-fly, or devil’s needle, devours them. He also says that an insect, which he calls the enemy of the cut-worm, probably the larva of a Carabus, or predaceous ground-beetle, preys on the grubs of the common dor-bug. ”

“ Once such an insect is caught on one of the threads it is lost beyond all hope. There it sticks, struggle as it may. The vibrations caused by its struggles attract the attention of the glow worm which quickly winds up the hanging thread. If it is not hungry at the moment it has been observed to play with its victim, [Pg 5] drawing in and then letting out the line after the manner of a fisherman. Finally the prey is drawn into the silken sheath and entirely devoured, chitinous shell and all. It is not merely sucked, as is the fashion of the spider or the fly. ”

“ The hair-worms certainly present the appearance of long, delicate black hairs, which move about with great activity amid the mud of pools and ditches. These worms, in the early stages of their existence, inhabit the bodies of insects, and may be found coiled up within the grasshopper, which thus gives shelter to a guest exceeding many times the length of the body of its host. Sooner or later the hairworm, or Gordius, as the naturalist terms it, leaves the body of the insect, and lays its eggs, which are fastened together in long strings, in water. ”

“ In the total absence of the tent caterpillar or apple-tree worm, which is their favorite food, cuckoos seem to succeed in finding a large green worm here in the orchard. In the beech woods they can find a forest worm that is riddling the leaves of the beeches. The robins are there in force and I hope the cuckoos will join them in the destruction of the worms. It is interesting to see the cuckoo fly by several times a day with a big green worm in its beak. ”

“ They are generally found upon a single twig or spray, usually a lateral, and it should at once be examined, as we may now easily destroy the whole brood by rolling a single leaf between the thumb and finger.
NOCTUÆ, OR OWLET-MOTHS, CUT-WORMS.
The perfect insects are thick-bodied, and of dull colors; they fly at night. The caterpillars are naked, live in the soil, and feed above ground at night, when they do considerable damage. The common Cut-worm, Agrotis, is an illustration. There are several sorts, which have received different names, but the worms all have very similar habits. ”

“ To destroy Worms in Gardens.—Water your beds with a strong decoction of walnut-tree leaves where there are worm casts; the worms will immediately rise up out of the earth, and you may easily take and cut them to pieces, and fatten your poultry therewith, or feed fish in ponds with them.
By laying ashes or lime about any plant, neither snails nor worms will come near it. As the moisture weakens it, you must, more or less, continue to renew the lime or ashes. ”

“ He picks out the stones which are of proper size, and he fastens them together with mortar really as men do."
"Pray tell us of him, Uncle Philip."
"I will. The insect I mean is the caddis-worm, [Pg 73] which is to be found sometimes in ponds, and very often in springs of fresh water. There are several sorts of them, but the one I am thinking of now, builds a stone house to live in. These worms are in the habit of making a little tube, sometimes of sand, or shell, or wood, or leaves, or stones, to live in; and their skill consists in joining these perfectly, and making them stick together. ”

“ There is yet another Filarian worm, a pest to the poultry-yard, the Gape-worm, Sclerostoma syngamus. This parasite is widely distributed, and is invested with special interest, since it produces disease, and kills annually thousands of young chickens, pheasants, partridges, and many of the larger kinds of wild birds. The worms find their way into the windpipe or tracheæ, through the drinking water, while in the embryotic or cercarian stage of existence, and their increase is so rapid, the birds quickly die of suffocation. ”

“ I need only mention the canker worm and American tent caterpillar, and the various kinds of cut worms, as instances.
43. Parasite of the American Silk Worm.
We must not, however, forget the good done by insects. They undoubtedly tend by their attacks to prevent an undue growth of vegetation. The pruning done to a tree or herb by certain insects undoubtedly causes a more healthy growth of the branches and leaves, and ultimately a greater production fruit. Again, as pollen-bearers, insects are a most powerful agency in nature. ”

“ The colour is saturated green, the eyes are transformed into round, projecting shiny black beads, and the head is erect. The ludicrously dreamy, complacent look has given way to wide-awake alertness. They take all kinds of living food. When they find an earthworm, they first look at it, bending the head sharply down, lift themselves upon the fore-limbs and then pounce upon it, nipping the prey with the jaws, and then poking it down deliberately with the hands. ”

“ Worms appear upon every vegetable thing; the borers dig their way beneath the bark of the trunk and cut long alleys through the wood; weevils pierce the grain and eat out its pith; the leaf-eaters of various sorts punch out the delicate membrane by individual effort; or collecting in bodies, throw their nets, like a spider-web, over the branches, and by combined attacks deliberately devour every leaf. While these species are at work openly and in full sight, others are at the roots digging and destroying and multiplying ”

“ An adaptation of this instructive couplet to gardening for the guidance of those of us who do not farm, but garden in a small way, would naturally enlarge the allowance of the cut-worm. From the more limited demesne the crow and the grakle are generally excluded. What is their loss is the cut-worm's gain. Nowhere does he run (or burrow) riot more successfully than in old gardens. ”

“ Among the Coleoptera or beetles there is a group of world-wide pests, the Elateridae or click beetles, the adults of the various “wireworms.” The insects in the larval or wireworm stage attack the roots of plants, eating them away below the ground. The eggs deposited by the beetle in the ground develop into yellowish-brown wire-like grubs with six legs on the first three segments and a ventral prominence on the anal segment. The life of these subterranean pests differs in the various species ”

“ A new enemy much dreaded by all cabbage raisers will begin to make his appearance about the time the flea disappears, known as the cut-worm. This worm is of a dusky brown color, with a dark colored head, and varies in size up to about two inches in length. He burrows in the ground just below the surface, is slow of motion, and does his mischievous work at night, gnawing off the young plants close at the surface of the ground. This enemy is hard to battle with. ”

“ After settling in the first larval stage, the insect becomes very sluggish, and does not move, except to migrate, as most do, from the leaves to the twigs, there to take up a permanent position. The legs and antennæ are retained throughout life, but in the adult are functionless, being folded against the body; in some species of intermediate forms the appendages become atrophied during development. In the olive scale, and related forms, the toughened cuticle not only serves as a protection to the insect, but also as a receptacle for the eggs (Fig. 5) ”

“ Very good illustrations of this kind of work are afforded by the rascal leaf-crumpler and the common bag worm, both of which in the larva state live in cases, and are much affected by parasites, and neither of which can survive if the cases are plucked in winter and placed away from any trees or shrubs, while under these circumstances the parasites will perfect and escape.
It is quite different with the second method of dealing with beneficial insects which I have mentioned, for here man has an opportunity of doing some very effective work. ”