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Commercial peach insect and disease recommendations

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Title:
Commercial peach insect and disease recommendations
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French, W. J.
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Agricultural Research Center, IFAS, University of Florida
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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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AGRICULTURAL RESEARCH CENTER - MONTICELLO Monticello, Florida

7 1/ Monticello ARC Mimeo Report BB 1974 January 31, 1974





CO RCIAL PEACH INSECT AND DISEASE RECOMMENDATIONS


FlodaW. J. French 1'2


Commercial peach production in north Florida would not be possible
without effective disease and insect control. 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 sprayt equipment available to him. Nevertheless, spraying for pest
control is no easy task. Attention must be given to many details, some
seemingly unimportnat. Many times the difference between a successful and
unsuccessful spray program depends on three factors: timing,,coverage, and
rates.

*TIMING: The folia ge 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 2 - 2 2 miles per hour and should be nozzled to deliver the gallons as determined from Table III.


I'Assistant Plant Pathologist

2 This mimeograph was prepared in collaboration with R. S. Mullen, Extension
Plant Pathologist; J. Brogdon, Extension Entomologist; and S. S. Fluker,
formerly Assistant Entomologist.










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 lbs. 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 lbs. of Thiodan 50% WP would be required per 100 gallons of water or 22 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 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 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 cbmmercial orchards by spraying with Ammate or 2,4,5,-T in the spring after leaf-out, (3) use nursery stock certified to be free of phony, (4) nursery stock suspected of harbouring phony can be made phonyfree 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. 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 lb/l00 gallon water will control rhizopus. If rainy weather occurs at harvest use lb Benlate in hydrocooler along with Botran. Do not use Benlate in place of Botran. Add 1 lb Botran and







-3-


lb of Benlate to each additional 100 gallons of 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. However, Zineb is not approved by EPA for use on peach.

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. Store 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 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.










TABLE I. PEACH SPRAY SCHEDULE SUGGESTED FOR COMMERCIAL PLANTINGS


NAME AND TIME


PESTS CONTROLLED AND MATERIAL


NO. OF SPRAY RECOMMENDED REMARKS

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
beds begin to swell sWale oa -q li o f scale; 2 applications
in late winter. scale, or 3% oil or of 3% oil or Ethion*San Jose Ethion-oil oil spray 14 days
apart for white peach
scale.

2. Pre-blossom. Tarnished plant bug-Parathion Thorough spraying of
Just before or Guthion or each tree is absoblossoms open. Imidan. 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 or See Table II
After all petals Scab Captan or Benlate
are off and be- Tarnished plant bug-Parathion Spray tree thoroughly
fore peach is Plum curculio or Guthion including trunk and
showing. or Imidan larger limbs.
Lesser Peach-Thiodan
tree borer

5. Shuck-fall or Brown Rot-Wettable sulfur or See Table II
first cover Scab Benlate or Captan
(3/4 shucks off). Tarnished plant -Parathion or Do not apply Thiodan
bug, Southern Guthion or more than 2 times durgreen stinkbug, Imidan ing the fruiting season.
Plum Curculio

6. Second cover Brown Rot-Wettable sulfur or If mites are Parathion
7-10 days later. Scab Captan or Benlate resistant, use Kelthane.
Lesser peach tree-Thiodan Do not apply Thiodan
borer or Systox within 30
Tarnished plant bug-Parathion days of harvest, or
So. Green stinkbug or Guthion Guthion within 21 days
Plum Curculio or Imidan of harvest, or Imidan
White peach scale within 14 days of
Mites -Systox or Kelthane harvest.

* 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.










PESTS CONTROLLED AND MATERIAL


NO. OF SPRAY RECOMMENDED

7. Third cover. BROWN ROT-Wettable sulfur or
7-10 days later Captan or Benlate
or four weeks PLUM CURCULI -Same as 2nd
before harvest SO. GREEN STINKBUG cover spray
of each variety. WHITE PEACH SCALE MITES

8. Fourth cover. BROWN ROT -Wettable sulfur or Do not apply Parathion
Two weeks before Captan or Benlate Imidan or Kelthane
harvest of each PLUM CURCULI0 -Parathion within 14 days of
variety. SO. GREEN STINKBUG harvest.
MITES -Kelthane


9. Fifth cover.
Pre-harvest
one week before harvest of each
variety


BROWN ROT-Wettable sulfur or
Captan or Benlate PLUM CURCULIO -Sevin
SO. GREEN STINKBUG


Sevin can be applied to within one day of harvest on peaches and 3 days of harvest on nectarines.


10. Sixth cover. BROWN ROT -Benlate If weather is hot and
Pre-harvest dry, it may not be
one day before necessary to use
harvest. Benlate in this spray.


POST HARVEST:SPRAYS


11. 1st borer spray. LESSER PEACH TREE -Thiodan Thoroughly wet scafAfter all fruit- BORER fold limbs, trunk,
is harvested. PEACH TREE BORER and soil at base of
MITES -Galecron or Fundal tree. Use Galecron
or Fundol in postharvest sprays only.

12. 2nd borer spray.-. LESSER PEACH TREE -Thiodan
30-45 days after BORER
1st borer spray. PEACH TREE BORER


13. 3rd borer spray.
30-45 days after 2nd borer spray.


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 2 sprays 2 weeks apart when crawlers are active.


NAME AND TIME










.RESIDUE TOLERANCES AND LIMITATIONS FOR PESTICIDES RECOMMENDED'FOR


PEACHES AND NECTARINES IN THIS PUBLICATION.


RESIDUE
CHEMICAL TOLERANCES (PPM)
Nectarine Peach
Benlate 15.0 15.0


INTERVAL BETWEEN LAST APPLICATION AND HARVEST, AND OTHER RESTRICTIONS.


Nectarine


Peach


No time limit. No time limit.
Do not graze treated orchards.


Botran 20.0 20.0 One day One day
Captan 50.0 100.0 No time limit. .24% suspension in postharvest dip or spray.
Diazinon 0.75 0.75 Ten days full coverage 20 days
spray.
�Ethion 1.0 1.0 Do not apply within 30 days of harvest. Do not
apply more than twice during fruiting season. EPN 3.0 3.0 21 days 21 days
Ferbam 7.0 7.0 Do not apply later than Do not apply within
immediately after bloom. 21.days of harvest. Fundal or 5.0 5.0 Apply as a post-harvest spray. Do not apply to
Galecron trees when fruit is present in any form. Do not
graze livestock in treated orchards. Guthion 2.0 2.0 21 days 21 days
Imidan 5.0 10.0 14 days 14 days
6 lb maximum per acre per application Kelthane 10.0 10.0 14 days 14 days
Liquid Safe
lime-sulfur chemical Apply during dormancy or delayed dormancy.
Methyl- Not 1.0
parathion registered Not registered 14 days
Parathion 1.0 1.0 Do not apply more than 5 lbs. actual Parathion
per acre per year. Do not apply within 14 days of harvest.
Sevin 10.0 10.0 3 days 1 day
Sulfur none none No time limit. No time limit.
Systox 0.75 0.75 Do not apply within 30 days of harvest. So not
apply more than three applications per season. Thiodan 2.0 2.0 Do not apply within 30 days of harvest. Do not
apply more than twice during fruiting season.


Table II.










Table III. AMOUNT OF PESTICIDE REQUIRED PER 100 GALLONS


Gallons of spray applied per mature tree

3 1.5 1 .75 .5 .25
3qts. 2qts. lqt.
Dilute 2x 3x 4x 6x 12x

CHEMICAL Pounds of wettable powder per 100 gallons.
Benlate 50% WP 0.50 1.0 1.5 2.0 3.0 6.0
Botran 75% WP 1.00 2.0 3.0 4.0 6.0 12.0
Cap-iSV 7IR .--------0----- 12 ---24-0 -----EPN 25% WP 1.50 3.0 4.5 6.0 9.0 18.0
-7 ---------------------- 27 --------70--970 ----12---20
Fundal 97% WP 0.5 1.0 1.5 2.0 3.0 6.0
fii-25 --------------------- 25---------0------ 7 ---ISO -----Imidan 50% WP 1.5 3.0 4.5 6.0 9.0 18.0
IEaie-UT-------------------- 20 ----- 70--770----12-- ---Parathion 15% WP 2.0 4.0 6.0 8.0 12.0 24.0
Vf-BO----------------------------------------0 0 -------. ---240 ---Sulfur, wettable 80% 6.0 12.0 18.0 24.0 36.0 72.0
----------------- ------------------- -------Ounces of emulsifiable concentrate/100 gal.
Diazinon AG500 4 lbs/gal E.C. 16 32 48 64 96 196
EPN 2 lbs/gal E.C. 32 64 96 128 192 384
EPN 5 lbs/gal E.C. 12.8 25.6 38.4 51.2 76.8 153.6
Ethion 4 lbs/gal E.C. 16 32 48 64 96 192
Fundal 4 lbs/gal E.C. 16 32 48 64 96 192
Galecron 4 lbs/sal E .C. 16 32 48 64 96 192
Guthion 2 lbs/gal E.C. 20 40 60 80 120 240
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 1 gal. - -. . Methyl Parathion 2 lbs/gal E.C. 16 32 48 64 96 192
Parathion 4 lbs/gal 10 20 30 40 60 120
Systox 2 ibs/gal E.C. 16 32 48 64 96 192
Thiodan Miscible 2 lbs/gal 48 96 144 192 288 576


*Use as dilute only

1 pint = 16 oz. = 473 milliliters
1 qt. = 32 oz. = 2 pints
1 gal. = 128 oz. = 4 qts. = 8 pts.
1 oz. = approximately 30 milliliters
1 lb. = 16 ounces .1 lb. = 1.6 ounces .4 lb. = 6.4 ounces .8 lb. = 12.8 ounces







Full Text
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PAGE 1

. AGRICULTURAL RESEARCH CENTER MONTICELLO Monticello, Florida Monticello ARC Mimeo Report BB 1974 January 31, 1974 lf .A.S. Univ. of F\orida REVISED RCIAL PEACH INSECT AND DISEASE RECOMMENDATIONS W. J. French 1 ' 2 --Commercial peach production in north Florida would not be possible with out effective disease and insect control. Al though 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 unimportnat. 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 an 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 1 2x 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 l 2 miles per hour and should be noz zled to deliver the gallons as determined from Table III. 1 Assistant Plant Pathologist 2 This mimeograph was prepared in collaboration with R. S. Mullen, Extension Plant Pathologist; J. Brogdon, Extension Entomologist; and S. S. Fluker, formerly Assistant Entomologist.

PAGE 2

-2?a,tes: Fungicides an_p 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 fo!'Illulation 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 lbs. 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 lbs. of Thiodan 50% WP would be required per 100 gallons of water or 22 lbs. per 500 gallons of water. Spray Notes: The following spray schedule (Table I) will give conuner 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. . 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 concen trate. DISEASES This section will discuss only those problems not covered in the spray schedule: Phony Peach: Phony peach is a disease of peaches that is spread from infected peach or wild plum trees to healthy peach trees by leafhoppers. Without t_echnical 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 immed iately after detection, (2) remove all wild plum trees within a minimum of 400 yards of a_ll cbmmercial orchards by spraying with Ammate or 2, 4, 5, -T in the spring after leaf-out, (3) use nursery stock certified to be free of phony, (4) nursery stock suspected of harbouring phony can be made phony 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. 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 temper atures below 50 F throughout the marketing period. Betran 75W added to the hydrocooling water at a rate of 1 lb/100 gallon water will control rhizopus. If rainy weather occurs at harvest use lb Benlate in hydrocooler along with Betran. Do not use Benlate in place of Betran. Add 1 lb Betran and

PAGE 3

-3lb of Benlate to each additional 100 gallons of water to hydrocooler during, operation. Flush and clean hydrocooler every l 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, 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. However, Zineb is not approved by EPA for use on peach. 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. Store 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 TO HONEYBEES Parathion, Guthion, EPN, and Sevin are highly toxic to honeybees. Se vere 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

TABLE I. PEACH SPRAY SCHEDULE SUGGESTED FOR COMMERCIAL PLANTINGS NAME AND TIME NO. OF SPRAY 1. 2. 3. 4. 5. 6. Dormant After all leaves are off and before beds begin to swell in late winter. Pre-blossom Just before blossoms open. Blossom Petal-fall. After all petals are off and 'be fore 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, -Ferbam, Scab Liquid lime-sulfur -. ----------------------------*White peach -Liquid lime sulfur scale, or 3% oi . l or *San Jose Ethion-oil scale Tarnished plant bug-Parathion or Guthion or Imidan. Blossom blight-Wettable sulfur or Benlate or Liquid lime sulfur. Brown Rot-Wettable sulfur or Scab Captan or Benlate Tarnished plant bug-Parathion Plum curculio or Guthion or Imidan Lesser Peach-Thiodan tree borer Brown Rot-Wettable sulfur or Scab Benlate or Captan Tarnished plant -Parathion or bug, Southern Guthion or green stinkbug, Imidan Plum Curculio Brown Rot-Wettable sulfur or Scab Captan or Benlate Lesser peach tree-Thiodan borer Tarnished plant bug-Parathion So. Green stinkbug or Guthion Plum Curculio or Imidan White peach scale Mites -Systox or Kelthane REMARKS If scale is a problem, 1 application lime sulfur for San Jose scale; 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 Table II Spray tree thoroughly including trunk and larger limbs. See Table II Do not apply Thiodan more than 2 times dur-. ing the fruiting season. If mites are Parathion resistant, use Kelthane. Do not apply Thiodan or Systox within 30 days of harvest, or Guthion within 21 days of harvest, or Imidan within 14 days of harvest. * 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.

PAGE 5

NAME AND _ TI?-$ NO. OF SPRAY 7. Third cover 7 10 days later or four weeks before harvest of each variety. 8. Fourth cover Two weeks before harvest of each variety. 9. Fifth cover Pre-harvest one week before harvest of each variety 10. Sixth cover Pre-harvest one day before harvest -5PESTS CONTROLLED AND MATERIAL RECOMMENDED BROWN ROT-Wettable sulfur or Captan or Benlate PLUM CURCULIO ____ -Same-as-2nd SO. GREEN STINKBUG cover spray WHITE PEACH SCALE MITES BROWN ROT -Wettable sulfur or Captan or Benlate PLUM CURCULIO -ParathionSO. GREEN STINKBUG MITEs-------------=Reithane __ _ BROWN ROT-Wettable sulfur or Captan or Benlate PLUM CURCULIO -Sevin SO. GREEN STINKBUG BROWN ROT -Benlate POST HARVEST SPRAYS 11, 1st borer spray •.. LESSER PEACH TREE -Thiodan BORER 12. After all fruit is harvested. 2nd borer spray •. . 30-45 days after 1st borer spray. PEACH TREE BORER MITES -Galecron or Fundal LESSER PEACH TREE -Thiodan BORER PEACH TREE BORER 13. 3rd borer spray ..• PEACH TREE BORER -Thiodan 30-45 days after 2nd borer spray. White peach scale WHITE PEACH SCALE -Parathion sprays... or Guthion or Diazinon Do not apply Parathion Imidan 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 Benlate in this spnay. Thoroughly wet scaf fold limbs, trunk, and soil at base of tree. Use Galecron or Fundol in post harvest sprays only. Thoroughly wet trunk to crotch and soil at base of tree. Ap p ly 2 sprays 2 weeks apart when crawlers are active.

PAGE 6

-6Table IL RESIDUE TOLERANCES AND LIMITATIONS FOR PESTICIDES RECOMMENDED .FOR PEACHES AND NECTARINES IN THIS PUBLICATION. CHEMICAL Benlate Botran Captan Diazinon Ethion EPN Ferbam Fundal or Galecron Guthion Imidan Kelthane Liquid lime-sulfur Methyl parathion Parathion Sevin Sulfur Systox T. lhodan RESIDUE TOLERANCES (PPM) INTERVAL BETWEEN LAST APPLICATION AND HARVEST, AND OTHER RESTRICTIONS. Nectarine Peach Nectarine . Peach 15.0 20.0 50.0 0.75 1.0 3.0 7.0 5.0 2.0 5.0 10.0 Safe chemical ------------------------15~ 0 No time limit. No time limit. Do not graze treated orchards. 20.0 One day 100.0 No time limit. 0.75 Ten days full coverage spray. One day .24% suspension in post~ harvest dip or spray. 20 days 1.0 Do not apply within 30 days of harvest. Do not apply mor.e than twice ' during fruiting season. 3.0 7.0 21 days Do not apply later than immediately after . bloom. 21 days Do not apply within 21 . days of harvest. 5.0 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. 2.0 21 days 21 days 10.0 14 days 14 days 6 lb maximum per acre per application 10.0 14 days 14 days Apply during dormancy or delayed dormancy. Not 1.0 registered Not registered 14 days 1.0 10.0 none 0.75 2.0 1.0 Do not apply more than 5 lbs. actual Parathion per acre per year. Do not apply within 14 days of harvest. 10.0 3 days 1 day none No time limit. No time limit. 0.75 Do not apply within 30 days of harvest. So not apply more than three applications per season. 2.0 Do not apply within 30 days of harvest. Do not apply more than twice during fruiting season.

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. ----------------------------------7Table III. AMOUNT OF PESTICIDE REQUIRED PER 100 GALLONS Gallons of spray applied per mature tree 3 1.5 1 .75 . 5 .25 3qts. 2qts. 1qt. Dilute 2x 3x 4x 6x 12x CHEMICAL Pounds of wettable powder per 100 gallons. Benlate 50% WP 0.50 1.0 1.5 2.0 3.0 6.0 Botran 75% WP 1.00 2.0 3.0 4.0 6.0 12.0 capfan-soi 7 ~~----------------------2:oo---G:o--s:o--g:-a----r2:-o---2q:-o-----EPN 25% WP 1.50 3.0 . 4.5 6.0 9.0 18.0 Fer:6atii-75i-m~----------------------:r:-o----,r:-o--s:-o--i:co----r2:-o---2q:-o-----runaa1 97% WP 0.5 1.0 1.5 2.0 3.0 6.0 ~uffiion-2si-~p---------------------r:2s---2:-s--g;7s-s:a-----,:-s---rs:-o-----Imidan 50% WP 1.5 3.0 4.5 6.0 9.0 18.0 Reiffiane-ssi-Qp--------------------2:-a----q:-a--6:a--s:-n----r2:-a---,q:-o-----Parathion 15% WP. 2.0 4.0 6.0 8.0 12.0 24.0 Sevrn-soi-~p-----------------------2:-o----q:-o--s:-n--s:-n----12:-n---2q:-o-----su1fur, wettable 80% 6.0 12.0 18.0 24.0 36.0 72.0 Tfiioctan-sai-Qp---------------------1:-s----g:a--q:-s--s:-u-----g:-u---rs:-u-----Ounces of emulsifiable concentrate/100 gal . Diazinon AG500 4 lbs/gal E.C. 16 32 48 o4 96 196 EPN_2_lbs/gal __ E.C. ________________ 32 _____ 64 ___ 96 __ 128 _____ 192 ____ 384 _______ _ EPN 5 lbs/gal . E.C. 12.8 25.6 38.4 51.2 76.8 153.6 Ethion_4_1bs/gal __ E.C. _____________ 16 _____ 32 ___ 48 ___ 64 ______ 96 ____ 192 _______ _ Fundal 4 lbs/gal E.C. 16 32 48 64 96 192 Galecron_4_lbs/gal __ E.C. ___________ 16 _____ 32 ___ 48 ___ 64 ______ 96 ____ 192 ______ _ Guthion 2 lbs/gal E.C. 20 40 60 80 120 240 Kelthane_4_1bs/gal __ E.C. ___________ 16 _____ 32 ___ 48 ___ 64 ______ 96 ____ 192 _______ _ Liquid lime-sulfur* scale insects 12 gal. leaf curl 6 gal. blossom blight I gal. Methyl Parathion 2 lbs/gal E.C. 16 32 48 64 96 192 Parathion 4 lbs/gal 10 20 30 40 60 120 Systox 2 lbs/gal E.C. 16 32 48 64 96 192 Thiodan Miscible 2 lbs/gal 48 96 144 192 288 576 *Use as dilute only 1 pint= 16 oz. = 473 milliliters 1 qt. 32 oz. = 2 pints 1 gal. = 128 oz. = 4 qts. = 8 pts. 1 oz. = approximately 30 milliliters 1 lb. = 16 ounces .1 lb. 4 lb. .8 lb. = 1. 6 ounces = 6.4 ounces = 12.8 ounces

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