Tin is removed mainly as a powdery mixture of stannate of lead and lead oxide, arsenic and antimony as a slagged mixture of arsenate and antimonate of lead and lead oxide.
A hydrous arsenate of lime, usually occurring in silky fibers of a white or grayish color.
A hydrous arsenate of iron occurring in green or yellowish green cubic crystals; cube ore.
Control depends upon sanitation and the use of arsenate of lead sprays.
It has been found effective when planting out to first dip the seedlings in leadarsenate at the rate of 1lb.
The chief of these are arsenate of lead and Paris green, though the latter has practically gone out of use.
Some good results have been secured by means of sliced potatoes dipped in arsenate of lead or Paris green; the potatoes are placed within reach of the woodlice, which are attracted to and feed upon the poisoned bait.
In the case of small ornamental trees, spraying with lead arsenate to which laundry soap has been added should be effective.
Frequent applications of arsenate of lead are essential to protect the tomato plants, especially during the earlier part of the season.
Spraying grass in spring and early summer with arsenateof lead will tend to poison the immature caterpillars.
During the growth of the crop the same strength of arsenate and soap can be applied as a spray.
Arsenate of lead is sold as a paste and as a powder, and is mixed with water to form a spray, 3lb.
Under garden conditions, control can be secured by spraying the plants with arsenate of lead (to which a spreader must be added in the case of cabbage), which should be done especially when the plants are young.
Arsenate of lead will give effective control on garden legumes.
The use of arsenate of lead sprays, however, is the most effective control for the caterpillars.
Arsenate of lead against the young caterpillars during November to February would act as an efficient control.
If it was necessary and practicable to protect ornamental cabbage trees from the attacks of this insect, it could be done by removing dead leaves from the crown and spraying with arsenate of lead to which laundry soap had been added.
The remedy is to spray the new shoots and under side of the leaves about June 1, with leadarsenate (6 lbs.
By spraying the foliage with lead arsenate (3 lbs.
Three or four heavy storms will not wash off my Bordeaux mixed, applied in that way, with arsenate of lead.
The twig-borer has small chance in a well-kept orchard, but, should it attain headway, prompt treatment with arsenate of lead will at once cut short its career.
Poisoning with an arsenate is the chief means of combating the pest.
Papier Moure” consists of paper soaked in solution of potassium arsenate (Tidy).
The spraying for apple-scab is with lime-sulfur to which may be added arsenate of lead.
Those which eat solid particles of food may, in most cases, be destroyed by applying some poisonous substance, such as arsenate of lead or Paris green, to the food which they eat.
They may be also held in check by applying a spray of Paris green or arsenate of lead at the time the broods are feeding.
Thorough, persistent spraying with arsenate of lead or Paris green, in April and May, ought to control this species.
Where the currant worm is troublesome the foliage should be dusted with arsenate of lead or Paris green as soon as it is well developed and before the fruit is started.
In general, the best method of controlling leaf-chewing insects is by applying arsenate of lead on the foliage.
This should be followed by a second spraying a week later, using bordeaux mixture (4-4-50) and three pounds of arsenate of lead.
In moderately infested vineyards, bordeaux mixture and arsenate are used instead of molasses and arsenate of lead, followed in about ten days with a second application of the same material.
The spraying should be done as soon as the beetles appear, using arsenate of lead six pounds, molasses one gallon and water one hundred gallons.
The vines should be sprayed with three pounds of arsenate of lead in fifty gallons of water when the larvæ are feeding on the foliage; or the beetles when feeding may be knocked into a pan containing a shallow layer of kerosene.
The walnut husk maggot can be controlled by spraying the trees with lead arsenateor cryolite the latter part of July and again 3 to 4 weeks later.
Control can be obtained by spraying the tree with lead arsenateor DDT early in July.
Defn: A hydrous arsenate of lime, usually occurring in silky fibers of a white or grayish color.
Defn: A hydrous arsenate of iron occurring in green or yellowish green cubic crystals; cube ore.
It is made with the paste known as Swift's Arsenate Paste, mixed with water.
And this is to spray the plants from the middle of April to early in May with arsenate of lead.
If there are too many to be hand-picked the bushes must be sprayed with arsenate of lead.
If very plentiful, spraying with arsenate of lead will destroy them.
The only plan therefore is to spray very early in the season with arsenate of lead wash.
This is composed of three pounds of arsenate of lead, ten pounds of powered Bordeaux mixture, and a good sticker in one hundred gallons of water.
Triple Arsenates with Nuclein is said to contain “Strychnin Arsenate gr.
He has, however, found that the pest succumbs to anarsenate of lead spray.
In some experimental spraying of Persian walnut trees in Maryland and Pennsylvania the past season with a sweetened arsenate of lead spray apparently good results were obtained.
The sodiumarsenate test gives a red colour due to catechin.
If a solution of sodium arsenate be added to an infusion of pyrogallol tan diluted until no longer distinctly coloured, and the mixture allowed to stand for about two hours, a green colour develops at the surface of the liquid.
It yields catechin, and gives a red colour with the sodiumarsenate test, but also will yield some bloom and gallic acid, and gives a blue-black with ferric salts.
As in the case of arsenate the optimum concentration and the corresponding maximum rate of fermentation are considerably greater for fructose than for glucose.
The relative rates produced by the addition of equivalent amounts of arsenate and arsenite (1 c.
The inhibiting effects of higher concentrations of arsenite and arsenate also present close analogies, but this most interesting aspect of the question has not yet been sufficiently examined to repay detailed discussion.
Remedies: Spray for the caterpillars in June with arsenate of lead and apply creosote to the egg masses whenever found.
Also spray the trees for caterpillars in early May and especially in August with arsenate of lead.
Remedies: There are three ways of combating this insect: First, by spraying the foliage with arsenate of lead in the latter part of May while the beetles are feeding, and repeating the spraying in June when the larvae emerge.
A brand of arsenate of lead containing at least 14 per cent of arsenic oxide with not more than 50 per cent of water should be insisted upon.
Remedies: There are two ways of combating this insect: (1) By spraying with arsenate of lead for the caterpillars during the latter part of May and early June.
Spraying material: Arsenate of lead should be used in the proportion Of 4 pounds of the chemical to 50 gallons of water.
The chewing insects are destroyed by spraying the leaves with arsenate of lead or Paris green.
It will be necessary to dissolve the mixed arsenate and phosphate of magnesia in hydrochloric acid.
The whole of the arsenic is precipitated as ammonic-magnesic arsenate in one hour, but it is advisable to leave it longer.
The precipitate of the ammonic-magnesic arsenate will contain the whole of the iron as ferric hydrate.
The precipitation and titration of the silver arsenate should be exactly as in the assays.
It is applicable in all cases where the arsenic exists in solution as arsenic acid or as arsenateof soda.
If, after adding excess of silver nitrate to insure a complete precipitation, the arsenate of silver be filtered off, the weight of the arsenic could be estimated from the weight of silver arsenate formed.
Iron, if present, interferes by forming a white flocculent precipitate of ferric arsenate after the addition of the sodium acetate and preliminary to the titration.
In a series of determinations in which the arsenic was weighed in both forms, the results were:-- Ammonic-magnesic Arsenic Magnesium Pyrarsenate Arsenic Arsenate in grams.
It is converted into sodium arsenate by evaporating to a small bulk with nitric acid and neutralising with soda.
The ferric arsenate will separate out as a yellowish-white flocculent precipitate.
It is more soluble than arsenate of lead and hence there is greater danger of burning the foliage with it.
Until 1909, Bordeaux mixture and Paris green were used, but since then the commercial brands of lime sulphur and arsenate of lead have taken their place, nearly doubling the cost of the spray material.
With lime-sulphur and arsenate of lead just before the blossoms open (may sometimes be omitted).
Two stomach poisons are commonly used, namely, arsenate of lead and paris green, but the former is rapidly replacing the latter.
PARIS GREEN is being rapidly displaced by arsenate of lead for several reasons.
Moreover, it costs from twenty to twenty-five cents a pound, and the arsenate of lead can be purchased for from eight to ten cents a pound.
Since it feeds on liquid sap only it is impossible to kill it by spraying the crop with a poison such as arsenate of lead.
Since they feed on foliage they can be very quickly destroyed by dusting or spraying the plants with a poison such as Paris green or arsenate of lead.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "arsenate" in a variety of sentences. We hope that you will now be able to make sentences using this word.
