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Commercial peach insect and disease recommendations

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Title:
Commercial peach insect and disease recommendations
Creator:
French, W. J.
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Agricultural Research Center, IFAS, University of Florida
Language:
English

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University of Florida
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Copyright Board of Trustees of the University of Florida
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153983608 ( OCLC )

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AGRICULTURAL RESEARCH CENTER - MONTICELLO Monticello, Florida

Monticello ARC Mimeo Report BB 1972-2 January 21, 1972

R E V I S E D

COMMERCIAL PEACH INSECT AND DISEASE RECOMMENDATIONS

W. J. French and S. S. Fluker

Without effective disease and insect control, commercial peach production in north Florida would not be possible. Although the peach has a relatively short development period in Florida, the fruit as well as the tree is subjected to constant attack by a variety of pests. A good disease and insect control program is important, not only in protecting the maturing fruits but in maintaining the trees' vigor season after season. Today's peach grower is fortunate to have effective insecticides, fungicides, and improved spray equipment available to him. Nevertheless, spraying for pest control is no easy task. Attention must be given to many details, some seemingly unimportant. Many times the difference between a successful and unsuccessful spray program depends on three factors; timing, coverage, and rates.

Timing - The foliage and tree should have a protective covering of fungicide and insecticide at all times, from the pre-blossom stage until fruit harvest. After the fruit is harvested, then the problem of proper timing becomes very important because of the intervals between sprays and the nature of the pests attacking the tree at this time. The white peach scale is normally controlled until harvest by the insecticides applied to protect the fruit. After harvest, when insecticides are applied at less frequent intervals, they should be timed to coincide with the "crawler" stage of each generation of the white peach scale.

Coverage - Economic pest control is dependent on uniform coverage of the tree with the correct pesticide dosage. Many growers who have been applying dilute sprays are using air-blast equipment capable of applying up to 12x concentrate sprays (apply oil sprays at dilute rate only). When sprays are concentrated 3x or more, there is little possibility of movement of spray solution from the point where the droplet hits the tree; therefore, accurate calibration and placement of the spray is essential to successful pest control.

The sprayer should travel at 1 1/2 - 2 1/2 miles per hour and should be nozzle to deliver the gallons as determined from Table III.

Rates - Fungicides and insecticides are recommended at specific rates which have been found to be effective and non-phytotoxic, under Florida conditions. It is, therefore, important to: (1) Know required amount of formulation to apply per tree. (2) Know the gallons of spray per tree the machine will deliver at a given rate of travel. (3) Know the amount of chemical to add per tank. Example: The recommended rate of Thiodan 50% WP is 1 1/2 lbs.


mwmw


1
tAssistant Plant Pathologist and Assistant Entomologist


500 cc 1/21/72









per 100 gallons of water when spraying dilute (3 gallons per tree). If the sprayer when traveling 2 MPH is found to be delivering 1 gallon of water per
tree then 4 1/2 lbs. of Thiodan 50% WP would be required per 100 gallons of water or 22 1/2 lbs. per 500 gallons of water.

Spray Notes - The following spray schedule (Table I) will give commercial control of important disease and insect pests. The rates given in Table III are based on dilute formulations with 3 gallons being applied per tree. 1 1/2 gallons would normally be required to adequately cover a mature tree during the; early season sprays, gradually increasing to 3 gallons per tree at full foliage. If heavy populations of white peach scale are encountered during the dormant season an Ethion-oil combination spray can be used instead of a 3% oil spray. Prepare by mixing 1 pint of Ethion 46% emulsifiable concentrate in 100 gallons of water. To this add 3 quarts of 80-90% oil emulsion concentrate.

DISEASESThis section will discuss only those problems not covered in the spray schedule:

Phony peach - Phony peach is a virus disease of peaches that is spread from infected peach or wild plum trees to healthy peach trees by leafhoppers. Without technical training it is difficult to identify infected trees in the early stages of this disease. When in doubt, consult your county agent, extension plant pathologist, or extension fruit specialist.

The longer the diseased trees remain in the orchard, the greater the chance of diseases being spread by insect vectors. Unless annual surveys are conducted and diseased trees removed, an infected orchard would rapidly become unprofitable.

Control recommendations are: (1) to remove all affected trees immediately after detection; (2) remove all wild plum trees within a minimum of 400 yards of all commercial orchards by spraying with Animate or 2,4,5,-T in the spring after leaf-out; and (3) use nursery stock certified to be free of phony virus. (4) Nursery stock suspected of harboring phony virus can be made virus-free by soaking plants in water held at 1180 for 40 minutes.

Bacterial spot - This spray program does not control bacterial spot, a disease which has not been a serious problem in Florida. When bacterial spot appears it is often associated with adverse cultural conditions which cause tree stress, i.e. low fertility, spray burn, etc.

Post Harvest decays - The two principal decays of peaches are brown rot and rhizopus rot. Both rots can be checked by cooling the fruit to temperatures below 50*F throughout the marketing period. Botran 75W added to the hydrocooling water at a rate of 1 lbflOO gallon water will control rhizopus. If rainy weather exists at harvest use 1/2 lb. Benlate in hydrocooler along with Botran. Do not use Benlate in place of Botran. Add 1 lb. Botran and 1/2 lb. of Benlate to each additional 100 gallons oil water to hydrocooler during operation. Flush and clean hydrocooler every 1 or 2 days.









Rust - Peach rust, like bacterial spot, causes greater damaging injury on weak trees than on those of high vigor. in central Florida orchards, especially those low in nitrogen, rust may appear in early June and cause heavy defoliation by mid-summer. The disease usually develops later in north Florida and seldom warrants control measures. Sulfur may provide some control but Zineb and Cyprex are more effective if applied before the disease appears.

PRECAUTIONS

Parathion, Guthion, EPN, and Systox are especially toxic to humans and should be applied only by properly trained and equipped operators. Read the entire label before opening any pesticide container and observe all necessary precautions and warnings. Store pesticides in original labeled containers out of reach of children, pets, and livestock. Sto~re all pesticides in a secure area, under lock and key. Dispose of left-over spray materials and all empty containers safely and promptly. Do not reuse empty pesticide containers. Follow the recommended dosage and waiting period to avoid excess residues and possible injury to plants and animals. Avoid drift of pesticides to adjacent areas. Do not be responsible for further polluting our environment.

Toxicity toHoneybees

Parathion, Guthion, EPN, and Sevin are highly toxic to honeybees. Severe
losses of bees can be expected if these materials are used when bees are in the orchard at time of application or for 24 hours thereafter.

Thiodan and Systox are moderately toxic to bees and can be used in the vicinity of bees. However, these materials should not be sprayed directly on the bees in the field.

Kelthane and Ethion are relatively non-toxic and can be used around bees with a minimum of injury.






-4-


TABLE I. PEACH SPRAY SCHEDULE SUGGESTED FOR COMMERCIAL PLANTINGS


No. Name and Time
nf Snrsv


Pests Controlled and Material
Re commended


1. Dormant Leaf curl, - Ferbam, If scale is a problem;
After all leaves Scab Liquid lime-sulfur 1 application limeare off and before *White peach - Liquid lime-sulfur sulfur for San Jose
buds begin to swell scale, or 3% oil or scalq; 2 applications
in late winter. * San Jose Ethion-oil of 3% oil or Ethionscale oil spray 14 days
apart for white peach
scale.

2. Pre-blossom Tarnished plant bug - Parathion Thorough spraying of
Just before or Guthion each tree is absoblossoms open. or EPN lutely necessary for
good control.

3. Blossom Blossom blight - Wettable sulfur Mainly for brown rot
or Benlate or problem areas. Apply Liquid lime- several sulfur or
sulfur. Benlate sprays during
bloom to reduce blossom blight damage.,

4. Petal-fall Brown rot, - Wettable sulfur See Table II.
After all petals scab or Captan Spray tree thoroughly
are off and before Tarnished plant bug, - Parathion including trunk and
peach is showing. Plum curculio or Guthion or larger limbs.
EPN
Lesser peach - Thiodan
tree borer

5. Shuck-fall or Brown rot, - Wettable sulfur See Table II.
first cover Scab. or Captan Do not apply Thiodan
(3/4 shucks off) Tarnished plant bug, - Parathion more than 2 times
Southern green stinkbug, or during the fruiting
Plum curculio Guthion or EPN season.

6. Second cover Brown rot, - Wettable sulfur If mites are Parathion
7-10 days later. Scab. or Captan resistant use Kelthane.
Lesser peach tree - Thiodan Do not apply Thiodan
borer. or Systox within 30
Tarnished plantbug, - Parathion days of harvest, or So.Green stinkbug, or Guthion Guthion or EPN within
Plum curculio or EPN 21 days of harvest.
White peach scale.
Mites. - Systox or Kelthane

*White peach scale and San Jose scale are usually controlled by the summer cover sprays of Parathion and Guthion. Liquid lime-sulfur for scale control rate: 12 gal/100 gallons water.


Remarks














7. Third cover Brown rot - Wettable sulfur
7-10 days later or Captan.
or four weeks before Plum curculio, - Same as 2nd harvest for each So. Green stinkbug, cover
variety. White peach scale, spray
1iites.

8. 4th cover Brown rot - Wettable sulfur Do not apply Parathion
Two weeks before or Captan or or Kelthane within 14
harvest of each Benlate. days of Harvest.
variety. Plum curculio, - Parathion
So. green stinkbug.
Mites - Kelthane

9. 5th cover Brown rot - Wettable sulfur Sevin can be applied
Pre-harvest or Captan or to within one day of
One week before Benlate. harvest on peaches
harvest of each Plum curculio, - Sevin and 3 days of harvest
variety. So. green stinkbug. on nectarines.

10. 6th cover Brown rot - Benlate If weather is hot and
Pre-harvest dry, it may not be
One day before necessary to use Benharvest. late in this spray.


POST HARVEST SPRAYS


11. 1st borer spray. Lesser peach tree borer - Thiodan Thoroughly wet scafAfter all fruit Peach tree borer fold limbs, trunk, and
is harvested. Mites - Galecron soil at base of tree.
Use Galecron in postharvest sprays only.

12. 2nd borer spray. Lesser peach tree borer, - same
30 to 45 days Peach tree borer as first
after st borer borer spray
spray.


13. 3rd borer
30 to 45
after 2nd
spray.


spray. days borer


White peach scale sprays.


Peach tree borer - Thiodan



White peach scale. - Parathion or Guthion or Diazinon


Thoroughly wet trunk
to crotch and soil at base of tree.

Apply throughout the summer and early fall
(Sept. - Oct.) when crawlers are active.


Remarks


No. Name and Time


Pests Controlled and Material









TABLE II RESIDUE TOLERANCES AND LIMITATIONS FOR PESTICIDES RECONhENDED FOR PEACHES AND NECTARINES IN THIS PUBLICATION.


Residue
Tolerances (PPM)


Interval between last application and
harvest, and other restrictions.


Nectarine Peach Nectarine Peach


Benlate Parathion


Methylparathion Guthion Diazinon


EPN


Sevin


Thiodan Systox Kelthane Ethion


Sulfur Captan Ferbam Botran


15.0 15.0

1.0 1.0


Not
registered


2.0 2.0


No time limit


No time limit


Do not apply within 14 days of harvest.
Do not apply more than 5 lbs. actual Parathion per acre per year.


Not registered


21 days


0.75 0.75 10 days full coverage spray


3.0 3.0 10 10

2.0 2.0


0.75 0.75 10 10

1.0 1.0 none none 50 100


21 days

3 days


14 days 21 days 20 days

21 days


1 day


Do not apply within 30 days of harvest.
Do not apply more than twice during fruiting season.

Do not apply within 30 days of harvest.
Do not apply more than three applications per season.


14 days


14 days


Do not apply within 30 days of harvest.
Do not apply more than twice during fruiting season.


No time limit No time limit


7 7 Do not apply later than
immediately after bloom.


20 20


1 day


No time limit .24% suspension in postharvest dip or spray.


Do not apply within 21 days of harvest.

1 day


Liquid lime-sulfur


Safe chemical


Apply during dormancy or delayed dormancy.


NF NF Apply as a post-harvest spray. Do not apply to trees
when fruit is present in any form. Do not graze
livestock in treated orchards.


Chemical


Galecron








TABLE III AMOUNT OF PESTICIDE PEQUIRED PER 100 GALLONS


Chemical


Gallons of spray applied per mature tree 3 1.5 1 .75 .5 .25
(3 qts) (2 qts) (1 qt.) Dilute 2x 3x 4x 6x 12x

Pounds of wettable powder per 100 gallons


Parathion 15% WP 2 4 6 8 12 24
Guthion 25% WP 1.25 2.5 3.75 5 7.5 15
EPN 25% WP 1.50 3 4.5 6 9 18
Thiodan 50% WP 1.50 3 4.5 6 9 18
Sevin 50% WP 2 4 6 8 12 24
Kelthane 85% WIP 2 4 6 8 12 24
Sulfur, Wettable 80% 6 12 18 24 36 72
Captan 50% WP 2 4 6 8 12 24
Ferbam 75% WP 2 4 6 8 12 24
Botran 75% WP 1 2 3 4 6 12
Benlate 50% WP 0.5 1 1.5 2.0 3.0 6.0


Ounces of emulsifiable concentrate/100 gal.


Galecron 4EC 4lbs/gal. E.C. 16 32 48 64 96 192
Diazinon AG500 4 lbs/gal. E.C. 16 32 48 64 96 192
Methyl Parathion 2 lbs/gal. E.C. 16 32 48 64 96 192
Ethion 4 lbs/gal. E.C. 16 32 48 64 96 192
Thiodan Miscible 2 lbs/gal. 48 96 144 192 288 576
Systox 2 lbs/gal. E.C. 16 32 48 64 96 192
EPN 5 lbs/gal. E.C. 12.8 25.6 38.4 51.2 76.8 153.6
Guthion 2 lbs/gal. E.C. 20 40 60 80 120 240
EPN 2 lbs/gal. E.C. 32 64 96 128 192 384
Parathion 4 lbs/gal. E.C. 10 20 30 40 60 120
Kelthane 4 lbs/gal. E.C. 16 32 48 64 96 192
*Liquid Lime-sulfur - scale insects 12 gal. - - -
leaf curl 6 gal.
blossom blight I gal. -


*Use as dilute only

1 pint = 16 oz. = 473 milliliters .1 lb. = 1.6 oz.
1 qt. = 32 oz. = 2 pts. .4 lb. = 6.4 oz.
1 gal. = 128 oz.= 4 qts. = 8 pts. .8 lb. - 12.8 oz.
I oz. = approx. 30 milliliters
1 lb. =16 oz.




Full Text

PAGE 1

AGRICULTURAL RESEARCH CENTER MONTICELLO Monticello, Florida Monticello ARC Mimeo Report BB 1972-2 REVISED January 21, 1972 COMMERCIAL PEACH INSECT AND DISEASE RECOMMENDATIONS W. J. French and S. s. Fluker 1 Without effective disease and insect control, commercial peach produc tion in north Florida would not be possible. Although the peach has a rela tively short development period in Florida, the fruit as well as the tree is subjected to Oonstant attack by a variety of pests. A good disease and insect control program is important, not only in protecting the maturing fruits but in maintaining the trees' vigor season after season. Today's peach grower is fortunate to have effective insecticides, fungicides, and improved spray equip ment available to him. Nevertheless, spraying for pest control is no easy task. Attention must be given to many details, some seemingly unimportant. Many times the difference between a successful and unsuccessful spray program depends on three factors; timing, coverage, and rates. Timing The foliage and tree should have a protective covering of fungicide and insecticide at all times, from the pre-blossom stage until fruit harvest. After tbe fruit is harvested, then the problem of proper timing becomes very important because of the intervals between sprays and the nature of the pests attacking the tree at this time. The white peach scale is normal ly controlled until harvest by the insecticides applied to protect the fruit. After harvest, when insecticides are applied at less frequent intervals, they should be timed to coincide with the "crawler" stage of each generation of the white peach scale. Coverage Economic pest control is dependent on uniform coverage of the tree with the correct pesticide dosage. Many growers who have been apply ing dilute sprays are using air-blast equipment capable of applying up to 12x concentrate sprays (apply oil sprays at dilute rate only). When sprays are concentrated 3x or more, there is little possibility of movement of spray solution from the point where the droplet hits the tree; therefore, accurate calibration and placement of the spray is essential to successful pest control. The sprayer should travel at 11/2 2 1/2 miles per hour and should be nozzled to deliver the gallons as determined from Table III. Rates Fungicides and insecticides are recommended at specific rates which have been found to be effective and non-phytotoxic under Florida condi tions. It is, therefore, important to: (1) Know required amount of formula tion to apply per tree. (2) Know the gallons of spray per tree the machine will deliver at a given rate of travel. (3) Know the amount of chemical to add per tank. Example: The recommer,ded rate of Thiodan 50% WP is 1 1/2 lbs. ~Assistant Plant Pathologist and Assistant Entomologist 500 cc 1/21/72

PAGE 2

-2per 100 gallons of water when spraying dilute (3 gallons per tree). If the sprayer when traveling 2 MPH is found to be delivering 1 gallon of water per tree then 4 1/2 lbs. of Thiodan 50% WP would be required per 100 gallons of water or 22 1/2 lbs. per 500 gallons of water. Spray Notes The following spray schedule (Table I) will give connner cial control of important disease and insect pests. The rates given in Table III are based on dilute formulations with 3 gallons being applied per tree. 11/2 gallons would normally be required to adequately cover a mature tree during the early season sprays, gradually increasing to 3 gallons per tree at full foliage. If heavy populations of white peach scale are encountered during the dormant season an Ethion-oil combination spray can be used instead of a 3% oil spray. Prepare by mixing 1 pint of Ethion 46% emulsifiable concentrate in 100 gallons of water. To this add 3 quarts of 80-90% oil emulsion concentrate. DISEASES This section will discuss only those problems not covered in the spray schedule: Phony peach Phony peach is a virus disease of peaches that is spread from infected peach or wild plum trees to healthy peach trees by leafhoppers. Without technical training it is difficult to identify infected trees in the early stages of this disease. When in doubt, consult your county agent, extension plant pathologist, or extension fruit specialist. The longer the diseased trees remain in the orchard, the greater the chance of diseases being spread by insect vectors. Unless annual surveys are conducted and diseased trees removed, an infected orchard would rapidly become unprofitable. Control recommendations are: (1) to remove all affected trees immedi ately after detection; (2) remove all wild plum trees within a minimum of 400 yards of all commercial orchards by spraying with Ammate or 2,4,5,-T in the spring after leaf-out; and (3) use nursery stock certified to be free of phony virus. (4) Nursery stock suspected of harboring phony virus can be made virus-free by soaking plants in water held at 118 for 40 minutes. Bacterial spot This spray program does not control bacterial spot, a disease which has not been a serious problem in Florida. When bacterial spot appears it is often associated with adverse cultural conditions which cause tree stress, i.e. 10':~ fertility, spray burn, etc. Post Harvest decays The two principal decays of peaches are brown rot and rhizopus rot. Both rots can be checked by cooling the fruit to temperatures below 50F throughout the marketing period. Botran 75W added to the hydrocool ing water at a rate of 1 lb/100 gallon water will control rhizopus. If rainy weather exists at harvest use 1/2 lb. Benlate in hydrocooler along with Botran. Do not use Benlate in place of Botran. Add 1 lb. Botran and 1/2 lb. of Benlate to each additional 100 gallons of water to hydrocooler during operation. Flush and clean hydrocooler every 1 or 2 days.

PAGE 3

-3Rust Peach rust, like bacterial spot, causes greater damaging injury on ,,eak trees than on those ()f high vigor. In central Florida orchards, es pecially those low in nitrogen, rust may appear in early June and cause heavy defoliation by mid-summer. The disease usually develops later in north Florida and seldom warrants control measures. Sulfur may provide some control but Zineb and Cyprex are more effective if applied before the disease appears. PRECAUTIONS Parathion, Guthion, EPN, and Systox are especially toxic to humans and should be applied only by properly trained and equipped operators. Read the entire label before opening any pesticide container and observe all necessary precautions and warnings. Store pesticides in original labeled containers out of reach of children, pets, and livestock. Stc re all pesticides in a secure area, under lock and key. Dispose of left-over spray materials and all empty containers safely and promptly. Do not reuse empty pesticide containers. Follow the recommended dosage and waiting period to avoid excess residues and possible injury to plants and animals. Avoid drift of pesticides to adjacent areas. Do not be responsible for further polluting ou~ environment. Toxicity to Honeybees Parathion, Guthion, EPN, and Sevin are highly toxic to honeybees, Severe losses of bees can be expected if these materials are used when bees are in the orchard at time of application or for 24 hours thereafter. Thiodan and Systox are moderately toxic to bees and can be used in the vicinity of bees. However, these materials should not be sprayed directly on the bees in the field. Kelthane and Ethion are relatively non-toxic and can be used around bees with a minimum of injury.

PAGE 4

-4TABLE I. PEACH SPRAY SCHEDULE SUGGESTED FOR COMMERCIAL PLANTINGS No. Name and Time of Spray 1. 2. 3. 4. 5. 6. Dormant After all leaves are off and before buds begin to swell in late winter. Pre-blossom Just before blossoms open. Blossom Petal-fall After all petals are off and before peach is showing. Shuck-fall or first cover ( 3/ 4 shucks off) Second cover 7-10 days later. Pests Controlled and Material Recommended Leaf curl, Scab *White peach scale, * San Jose scale Ferbam, Liquid lime-sulfur Liquid lime-sulfur or 3% oil or Eth ion-oil Tarnished plant bug Parathion or Guthion or EPN Blossom blight Wettable sulfur or Benlate or Liquid lime sulfur. Brown rot, Wettable sulfur scab or Captan Tarnished plant bug, Parathion Plum curculio or Guthion or EPN Lesser peach Thiodan tree borer Brown rot, Wettable sulfur Scab. or Captan Tarnished plant bug, Parathion Southern green stinkbug, or Plum curculio Guthion or EPN Brown rot, Wettable sulfur Scab. or Captan Lesser peach tree Thiodan borer. Tarnished plantbug, So.Green stinkbug, Plum curculio White peach scale. Parathion or Guthion or EPN Mites. Systox or Kelthane Remarks If scale is a problem; 1 application lime sulfur for San Jose seal; 2 applications of 3% oil or Ethion oil spray 14 days apart for white peach scale. Thorough spraying of each tree is abso lutely necessary for good control. Mainly for brown rot problem areas. Apply several sulfur or Benlate sprays during bloom to reduce blos som blight damage., See Tab le II . Spray tree thoroughly including trunk and larger limbs. See Table II. Do not apply Thiodan more than 2 times during the fruiting season. If mites are Parathion resistant use Kelthane. Do not apply Thiodan or Systox within 30 days of harvest, or Guthion or EPN within 21 days of harvest. *l-lliite peach scale and San Jose scale are usually controlled by the summer cover sprays of Parathion and Guthion. Liquid lime-sulfur for scale control rate: 12 gal/100 gallons water.

PAGE 5

No. Name and Time of Spray 7. 8. 9. Third cover 7-10 days later or four weeks before harvest for each variety. 4th cover Two weeks before harvest of each variety. 5th cover Pre-harvest One week before harvest of each variety. 10. 6th cover Pre-harvest One day before harvest. 11. 1st borer spray. 12. 13. After all fruit is harvested. 2nd borer spray. 30 to 45 days after 1st borer s ra. 3rd borer spray. 30 to 45 days after 2nd borer spray. White peach scale sprays. -5Pests Controlled and Material Recommended Brown rot Wettable sulfur or Captan. Plum curculio, Same as 2nd So. Green stinkbug, cover White peach scale, spray Mites. Brown rot Wettable sulfur or Captan or Benlate. Plum curculio, Parathion So. green stinkbug. Mites Kelthane Brown rot Wettable sulfur or Captan or Benlate. Plum curculio, Sevin So. green stinkbug. Brown rot Benlate POST HARVEST SPRAYS Remarks Do not apply Parathion or Kelthane within 14 days of Harvest. Sevin can be applied to within one day of harvest on peaches and 3 days of harvest on nectarines. If weather is hot and dry, it may not be necessary to use Ben late in this spray. Lesser peach tree borer Thiodan Thoroughly wet scafPeach tree borer fold limbs, trunk, and Mites Galecron soil at base of tree. Lesser peach tree borer, same Peach tree borer as first borer spray Peach tree borer Thiodan White peach scale. Parathion or Guthion or Diazinon Use Galecron in post harvest sprays only. Thoroughly wet trunk to crotch and soil at base of tree. Apply throughout the summer and early fall (Sept. Oct.) when crawlers are active.

PAGE 6

TABLE II Chemical Benlate Parathion -6RESIDUE TOLERANCES AND LIMITATIONS FOR PESTICIDES RECO } ~fENDED FOR PEACHES AND NECTARINES IN THIS PUBLICATION. Residue Tolerances(PPM) Nectarine Peach 15.0 1.0 15.0 1.0 Interval between last application and harvest, and other restrictions. Nectarine Peach No time limit No time limit Do not apply within 14 days of harvest. Do not apply more than 5 lbs. actual Parathion per acre per year. MethylNot 1.0 Not registered 14 days parathion registered Guthion 2.0 2.0 21 days 21 days 20 days 21 days 1 day Diazinon 0.75 0.75 10 days full coverage spray 21 days EPN 3.0 3.0 Sevin 10 10 3 days Thiodan Systox Kelthane Ethion Sulfur Captan Ferbam Botran 2.0 0.75 10 1.0 2.0 Do not apply within 30 days of harvest. Do not apply more than twice during fruiting season. 0. 75 Do not apply within 30 days of harvest. 10 1.0 Do not apply more than three applications per season. 14 days 14 days Do not apply within 30 days of harvest. Do not apply more than twice during fruiting season. none none No time limit No time limit .24% suspension in post harvest dip or spray. 50 100 No time limit 7 7 Do not apply later than immediately after bloom. 20 20 1 day Do not apply within 21 days of harvest. 1 day Liquid Safe chemical Apply during dormancy or delayed dormancy. lime-sulfur Galecron NF NF Apply as a post-harvest spray. Do not apply to trees when fruit is present in any form. Do not graze livestock in treated orchards.

PAGE 7

-7TABLE III AMOUNT OF PESTICIDE REQUIRED PER 100 GALLONS Gallons of spray applied per mature tree Chemical 3 1.5 1 75 .s .25 (3 qts) (2 qts) (1 qt.) Dilute 2x 3x 4x 6x 12x Pounds of wettable powder per 100 gallons Parathion 15% WP 2 4 6 8 12 24 Guthion 25% WP 1.25 2.5 3.75 5 7.5 15 EPN 25% WP 1.50 3 4.5 6 9 18 Thiodan 50% WP 1.50 3 4.5 6 9 18 Sevin 50% WP 2 4 6 8 12 24 Kelthane 85% WP 2 4 6 8 12 24 Sulfur, Wettable 80% 6 12 18 24 36 72 Captan 50% WP 2 4 6 8 12 24 Ferbam 75% WP 2 4 6 8 12 24 Botran 75% WP 1 2 3 4 6 12 Benlate 50% WP 0.5 1 1.5 2.0 3.0 6.0 Ounces of emulsifiable concentrate/100 gal. Galecron 4EC 4lbs/gal. E.C. Diazinon AGSOO 4 lbs/gal. E.C. Methyl Parathion 2 lbs/gal. E.C. Ethion 4 lbs/gal. E.C. Thiodan Miscible 2 lbs/gal. Systox 2 lbs/gal. E.c. EPN 5 lbs/gal. E.C. Guthion 2 lbs/gal. E.C. EPN 2 lbs/gal. E.C. Parathion 4 lbs/gal. E.c. Kelthane 4 lbs/gal. E.C. *Liquid Lime-sulfur scale insects leaf curl blossom blight *Use as dilute only 16 3l 16 32 16 32 16 32 48 96 16 32 12.8 25.6 20 40 32 64 10 20 16 32 12 gal. 6 gal. 1 gal. 1 pint= 16 oz.= 473 milliliters 1 qt. = 32 oz.= 2 pts. 1 gal.= 128 oz.= 4 qts. = 8 pts. 1 oz. approx. 30 milliliters 1 lb. = 16 oz. 48 48 48 48 144 48 38.4 60 96 30 48 64 64 64 64 192 64 51.2 80 128 40 64 96 96 96 96 288 96 76.8 120 192 60 96 .1 lb. = 1.6 oz. .4 lb.= 6.4 oz. .8 lb.• 12.8 oz. 192 192 192 192 576 192 153.6 240 384 120 192


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