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The Cauliflower

Chapter 6 INSECT AND FUNGUS ENEMIES.

Word Count: 3011    |    Released on: 01/12/2017

d plants. The four here mentioned require to be specially guarded against. In preparing these notes I

eds drying out too quickly, to have the earth at least eight inches deep. In hot-beds this insect is seldom troublesome, being probably repelled by the fumes from the manure used. When the seed is sown in the open ground, as practised by many large growers, an extra quantity should be used to ensure against almost certain loss of some of the plants by the flea beetle. The soil should be rich and fine, so that the plants will pass the critical stage as quickly as possible. Sowing radish seeds with the cauliflower is practised by some, as this seed costs but little, and the radishes, coming

the early crop, so that they become well established and out of reach before their depredations seriously begin, or else, for the late crop, they are set toward the last of June, after the worms have begun to pupate, and are no longer troublesome. Until recently, digging and killing the worms by hand seemed to be almost the only practical remedy. Of late years, trapping the worms under bunches of grass or cabbage leaves, scattered over the ground preparatory to setting the plants, has been successfully resorted to. An improvement upon this method, recommended by the Entomologist of the United States Department of Agriculture, is now in use, and gives exce

multiplication as to cause the entire destruction of cabbage crops. It commences its attack upon the young plants while yet in the seed-bed and continues to infest them, in several successive broods, until they are taken up in the autumn. The larv? operate by consuming the rootlets of you

nts ceasing to grow, and wilting or assuming a bluish appearance. Such plants should be at once removed, together with the earth immediately surrounding the root, and fresh plants which have been held in reserve set in their places. The only satisfactory remedies are preventive ones. The s

t of the day, very much the same as when affected by club root. Dissolve Muriate of Potash (analyzing 45 per cent. actual potash) in water in the proportion of one tablespoonful to the gallon; or double the quantity of Kainit or common potash salts (13 per cent. actual potash). Apply this directly to the roots, about one gill to each plant, whether seemingly affected or not, for the maggot will have done much harm be

maggot is a poor grade of sulphur, sulphur before being purified, that sme

difficult one with which to deal. It seldom wholly destroys the crop, and is generally a little less destructive after a few years than it is at first, being kept in check by its natura

ep the insect in check for a year or two when it first makes its appearance, as the butterflies are comparatively s

ace free from everything else of the cabbage tribe, except one or more patches of rutabagas

they are set out, for the first one or two ho

or five or ten minutes, by means of a force pump and spraying nozzle, until the mixture loses its oiliness and becomes like butter. When used, dilute one part of the emulsion with about fifteen of water, and spray it upon the plants by means of a fo

ter still, mixed one part with about twenty parts of flou

ans and taken directly to the field, will be about the right temperature by the time it can be applied. Experiments with

passing all through a meal sieve. Dash a small pinch into the heart of the plant, so that it will settle as dust on all the leaves. Repeat a

e Paris green, thoroughly mixed, one ounce with six pounds of

S DIS

ive to the cauliflower at different stages of its growth. The pri

ngrene" which occurs in Germany, and which is there attributed to the parasitic attack of the fungus known as Pleospora Napi. He finds this and other fungi present, but does not himself consider them the direct cause of the disease, which he attributes solely to the abundance of manure and mois

cauliflower crop was almost entirely destroyed by this disease, which was attributed to the heavy rains at the time the plants

se. It undoubtedly has this effect to some extent, by permitting a more free circulation of the air, thus drying up the moisture on the plants and thereby lessening the opportunity for the germination of the spores. The increased distance may also dimin

ms become strong enough to resist its attacks. An additional precaution sometimes employed is to grow the plants in pans or small boxes and water them only by setting these in a tank of water of nearly the same depth, allowing the water to so

fungi, but I do not find that the subject has been studied. Doubtless the rupture of the bark by alternate freezing and thawing gives the fungi an opportunity to atta

TNO

Chou-fleur) par M. le Professor O. Comes (Atti del R. Instituto del incorraggiamento alle Scienzie natur

on the vessels are found filled with gum. M. Comes recognizes in this disease all the symptoms of the affection which has been designated under the name humid gangrene. He thinks that it is the same disease which, by German authors, is attributed to the parasitism of Pleospora Napi, Fuckel, or to its conidiferous form, sporidesmium excitosum, Kuehn. But he considers the presence of these parasite

which attacks tomatoes and which was described by this author in the same journal in 1884." [This disease is also ment

9, p. 769, (from the Port

totally failed through the same cause. In Manorville the crop has not sufficiently developed in some of the fields to warrant picking, and in Mattituck and east of that plac

to pay for plowing the ground, not to speak of the other expenses which have been entailed.

n Monday he cut enough to fill 30 barrels. He let them lie in his barn over

ks will prove a total loss. And so on the reports come from many East End farm

mping off" may be found in the Am

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