In a valuable paper read before the New Jersey State Horticultural
Society, and recently published in the "American Entomologist," Mr. A.
S. Fuller makes the following useful suggestions:

"Insects and diseases are frequently so closely united, or so dependent upon each other, that the naturalist often finds it difficult to determine to which the fruit grower should attribute his losses. Some species of insects attack only diseased or dead plants; others only the living and healthy. If a plant shows signs of failing, we are inclined to speak of it as being diseased, whether the failure is caused by a lack of some element in the soil, attacks of parasitic fungi, or noxious insects. The loss is the same in the end, whether from one or all of these enemies combined.

"There are two practical methods of combating insect enemies and diseases of plants; one is to so carefully cultivate and stimulate the growth of the plants that they may possess the power of resisting attack; the other is to make war directly upon them by artificial means. Of course, the first method is most applicable or practicable against the more minute species, such as the plant-lice, rust, smut, and mildew. I do not recommend forcing plants to extremes, in order to enable them to resist their enemies, as this might work an irreparable injury; but the condition to be aimed at should be a healthy, vigorous growth; for anything beyond this is more the sign of weakness than strength.

"The half-starved, overworked and uncared-for horse is sure, sooner or later, to become the prey of various kinds of internal and external parasites, which are thrown off, or successfully resisted in their attacks, by the healthy, vigorous, and well-fed animal; and the same principle holds good all through the animal and vegetable kingdoms—whether the subject be a man, horse, sturdy oak, or delicate strawberry plant. Not that all diseases are due to loss of vigor through starvation and neglect; but that a large number of them are is well known."

STRAWBERRIES

We all have seen these principles verified. In the Great American strawberry, I think, we have an example of feebleness resulting from over-stimulation. The Wilson Seedling, that, in the local vernacular, is sometimes said to be "running out," is, in contrast, the consequence of starvation, neglect, and long-continued propagation from poor, mixed stock. Feebleness can scarcely be called a disease, and yet it is best counteracted by the tonic treatment suggested by Mr. Fuller.

In loose, light soils, the Aphis, or Green Fly, often penetrates to the roots of strawberry plants in immense numbers, and they suck away life or vitality. The tonic of wood-ashes scattered over the rows will usually destroy the pests. Refuse from the tobacco-factory is also recommended.

I think that wood-ashes and bone-dust are excellent preventives of burning or sun-scalding. They give the plants such vigor that they are able to resist sudden or great climatic changes, from heat to cold, or from drought to moisture.

Many varieties are enfeebled by their disposition to run profusely. Kerr's Prolific, for example, will speedily sod the ground with small, puny plants, whose foliage will burn so badly that the fruit can scarcely mature. Set out these small plants, and give the tonic treatment of cutting off all runners, and large, bushy stools, with vigorous foliage and superb fruit, will result. Indeed, next to fertilizers and moisture, there is nothing that so enhances the vigor and productiveness of a plant as clipping the runners as fast as they appear. The uncurbed habit of running depletes almost like disease; and but few varieties will make large fruit buds and runners at the same time.

In close, wet weather the fruit and leaf stalks will sometimes suffer from mildew; and occasionally a microscopic fungus, known as the strawberry brand, will attack the foliage. I have also seen, in a few instances, a disease that resembled the curl-leaf in raspberries. The plants were dwarfed, foliage wrinkled and rusty, and fruit misshapen, like small, gnarly apples. In all such instances I believe in tonic treatment, of wood-ashes, bone-dust, guano, and fertilizers of like nature, used with care. Plants do not need over-doses or over-feeding any more than we do ourselves. When a few plants are diseased, I believe in rigorously rooting them out and burning them. If a field is affected, as soon as possible turn the plants under, and renovate the land with clover, buckwheat, a light dressing of lime, and thorough exposure to the air, light, and frost. By such methods, and a wise selection of fertilizers, I believe that strawberries can be raised on the same ground for centuries. My plants have always been exceptionally free from all kinds of disease or rust, and I attribute it to the liberal use of wood-ashes.