42

) 9 TO PREVENT MILDEW OF CLOTH

By P. H. Rolfs

Various kinds of fabric are used for protecting plants

against light frosts and even against freezes. The lighter cloths,

such as cheese cloth, or plant bed cloth, is used extensively over

seed beds in the summer time to protect them against the direct

rays of the sun.

A considerable amount of this cloth can be purchased

already treated, with both the formula for preventing mildew and

with paraffine, water proofing.

Mildew formula #1: Formaldehyde solution.
Dip the cloth in 10C solution of formaldehyde (formalin)
and fold away wet. This will preserve the cloth for several months.


Mildew formula #2: Zinc sulphate solution.
Zinc sulphate __----------------------..................... 7j lbs.
Sal soda ....................................._7 lbs.
Tartaric acid ............................----------------- 15 oz.
Water _..... .........................__ ................... 300 gals.

Directions: Dissolve the zinc sulphate in a barrel of

water, then dissolve the tartaric acid ani sal soda in water. As

each of these has been dissolved in water, pour into the zinc sul-

phate. Dilute to 300 gallons. Soak the cloth in this solution for

24 hours being careful to have the cloth freed from air.bubbles and

dry without wringing.

Mildew formula #3: Coppsr sulphate solution.
Sal Soda... .................................... 7 Ibs.
Tartaric Acid. 15 ounces
Copper Sulphate .______................___.........-------- -..- 7* lbs.
Water ......._____ _______,____..._._------------------------------300 gals

Directions: Formula #3 is prepared by dissolving the

copper sulphate first, mix in a way similar to formula #2 arid the

method of treatment the same.

FLORIDA AGRICULTURAL EXPERIMENT STATION,
GAINESVILLE, FLORIDA









TO .*P 0VAk'T ;ILsDr OF CLOTH,


Various kinds of fabric are used for protecting plants

against li.::ht frosts and even garinit freezes. The liht:er cloths,

such as cheese clojh, or pl nt bed cloth, is used extonsively over

seed beds in the :;uaor time to protect th:.h-ra i3not the direct

r- y, of tho sun. *

A cons iderble r *nount of this cloth can be purchac :d

already treated, with both the formula for provonting' mildew and

with paraffine, water Proofing -

Mildow formula i1: Formaldehydie solution,

Dip the cloth in 10Q solution of formaldehyde (Iorimaln)

and fold a:- y wet. This will preserve the clobh for ovortal

- rmoni;hs.

Lildewr formula, ..: Zinc sulphate solittion.

inc. -alphato ............*.. 7 1/2 lbs.

Sal soda ... ......... ......... 7 1/2 lbs.

Tatartaric acid ................... 15 oz.

S-,tor ........... ............ ... 300 gals.

Directions: Disolve the zinc sulphate in a barrel of

water, then disolve the tatatic acid and s_1 soda in water. As

each of thesee have been dissolved in iator pour into the zinc

culph ~to. Dilute to 300 gallons. "oak thoe &oth in this solution

for 24 hrs. 4oing careful to have the cloth freed from air bubbles

and dry wiShotit wrin :ing.

-ildew formal a :5: Copper sulph te solution.

Directions:iormun a 53 is prepared in a way similar to

that of forma -l and the method of treatment tho same*





O Prevent Wildew of 'lth-


So dr of. 1.

3 fthe cloth in a 10 solution of Formaldehyde (formaifn)
and fold) awla we*t. This will. last -for sateral caonthe


Formu .L No. 2. ( rorm Fla. rower F'eb. 2, 1i19)
Sil Laoda -o -- a a 74 pounds
Tarterie a aci a If o iInel
Zinc atmphate 7w pounds.
Water 300 gallons.


Yormula ao 3.
Sal nod& a a 7f pounds
Tartirri acid 1& ounces
Copper sulphate 7 pounds
Water 300 gallons.

)IR1SCTIOLNa. *f"Bioilve the sine or copper e lphata i, about a barrel
of water. Likewise the sal soda. Then pour tog fther into a 300
gallon tank containing 200 gallons of water; add the tartaric acid
ani stir. The fabric should 'be soaked 24 houreioj 16ngar if eylr
every part has not been thoroly wet. The eloth should be dried
without ringing. ..'' ) /
Cloth thus treated will iast from three to iv+e yearlt under the
severeet conditions, while untreated cloth will become tofl less in
a. month under the same conditions, .



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