1962 weed control recommendations for fruit crops 
Date
1962
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Published May 1962. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
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REViSED ED. AVAiLASLE
1962 Weed Control Recommendations For Fruit Crops
Fruit growers are aware of the importance of ade- quate weed control for the production of high yields of high quality. Weeds compete whh crops for water, nutrients, and light and are often hosts for insects and diseases.
The first line of defense against weeds is the use of good cultural practices. If there is a choice, select fields without serious weed problems for planting perennial fruit crops. If a field infested with perennial weeds must be used, follow a weed-killing program before the crop is planted.
Cultivation is often the most efficient method of removing weeds from between rows of fruit plants, and herbicide applications should be planned to supplement cultivation practices. Much injury can be done to fruit plants or trees by cultivating too deeply and too close to the plants.
Several generalizations can be made about chemical weed control in fruit crops that may help growers decide the value of a herbicide program for a particular weed problem.
Weeds are killed most easily when conditions favor germination and rapid plant growth. Satisfactory results
1962 OREGON WEED CONTROL CHART FOR FRUIT CROPS
can be expected if herbicides are applied as directed and under normal conditions. Unusual temperatures or rain- fall at the time of, or soon after, application of herbi- cides may cause unsatisfactory results.
Young weeds are more easily killed than well estab- lished weeds. Many herbicide programs for fruit crops are effective only in preventing new weeds from starting.
Soil characteristics, such as clay content and organic matter level, strongly influence the effect of some herbi- cides. Heavier soils usually require higher rates of application of herbicides to obtain weed control than do lighter, sandy soils.
It is necessary to apply the correct amount of herbi- cide uniformly over the control area. In order to do this, quantities of chemicals must be measured carefully, application equipment calibrated accurately, and applica- tion made carefully.
Fruit growers should learn as much as possible about the herbicides they are using. Information on loss by evaporation, movement with soil moisture, and limita- tions of certain weed species will aid in making most effective use of the control programs listed in this leaflet.
This is one of a series of Fact Skeets reporting Cooperative Extension work in agriculture and home econom- ics, F. E. Price, director. Printed and distributed in furtherance of Acts of Congress of May 8 and June 30, 1914. Oregon State University, Oregon counties, and U. S. Department of Agriculture cooperating.
CROP CHEMICAL
APPLICATION RATE PER ACRE
TIME REMARKSACTUAL FORMULATION BLACKBERRIES
(and other trailing berries)
BLUEBERRIES GOOSEBERRIES
& RASPBERRIES
Karmex diuron 2,4-D amine Dinitro general
plus CIPC
3.2 lbs. lb.
2 lbs. Dinitro 6 lbs. CIPC
4 lbs. of 80% 1 pint 3 pts. Dinitro H gals. CIPC
Winter After harvest Winter
For broadleaf perennial weeds
CRANBERRIES Stoddard solvent
Amitrole
IPC
Simazine
To wet weeds
2 lbs.
8 lbs.
4 lbs.
4 lbs. of 50%
40 lbs. of 20% granular
100 lbs. of 4% granular
Anytime
Within 10 days after harvest
Spring or after harvest
After harvest
Use as a spot treatment
Rate cut in half for spring
FS7 5-62
1962 OREGON WEED CONTROL CHART FOR FRUIT CROPS (Continued)
CROP CHEMICAL
APPLICATION RATE PER ACRE
TIME REMARKSACTUAL FORMULATION GRAPES Karmex diuron
Simazine
3.2 lbs.
32 lbs.
4 lbs. of 80%
4 lbs. of 80%
Early spring
Early spring
Application may be split and half applied in fall Application may be split and half applied in fall
STRAWBERRIES New plantings
Established plantings
Falone Sesone
Simazine
2,4-D amine
Simazine
Dinitro general plus IPC
4 lbs. 3.6 lbs.
1 lb.
1 lb.
1 lb.
2 lbs. Dinitro 6 lbs. IPC
I gal. 4 lbs. of 90%
U lbs. of 80%
1 qt.
11 lbs. of 80%
3 pts. Dinitro 3 gals. IPC
Before planting One week after
planting One month after
planting Within 2 weeks
after harvest After harvest
and/or after last cultiva- tion in fall
In winter when plants are dormant
Incorporate by shallow tillage Requires soil. surface moisture
Requires soil surface moisture
Requires soil surface moisture
APPLES
Nonbearing apples
Simazine or Karmex diuron
plus amitrole or amitrole-T
Amitrole or amitrole-T
3.2 lbs. simazine or 3.2 lbs. diuron 2 lbs. amitrole or 2 lbs. amitrole-T 4 lbs. amitrole or 4 lbs. amitrole-T
4 lbs. of 80% 4 lbs. of 80% 4 lbs. of 50% 1 gal,
8 lbs. of 50% 2 gals.
After harvest in fall but before fruit forms in spring
When weeds are growing well
For control of certain perennial weeds
APPLES APRICOTS PEACHES PEARS PLUMS and
PRUNES
Dalapon 8,5 lbs. 10 lbs. of 85% In spring; re- peat if needed
For control of grass
PEARS Karmex diuron plus amitrole or ainitrole-T
3.2 lbs. diuron 2 lbs. amitrole or 2 lbs. amitrole-T
4 lbs. of 80% 4 lbs. of 50% 1 gal.
After harvest in fall but before fruit forms in spring
1962 Weed Control Recommendations For Fruit Crops
Fruit growers are aware of the importance of ade- quate weed control for the production of high yields of high quality. Weeds compete whh crops for water, nutrients, and light and are often hosts for insects and diseases.
The first line of defense against weeds is the use of good cultural practices. If there is a choice, select fields without serious weed problems for planting perennial fruit crops. If a field infested with perennial weeds must be used, follow a weed-killing program before the crop is planted.
Cultivation is often the most efficient method of removing weeds from between rows of fruit plants, and herbicide applications should be planned to supplement cultivation practices. Much injury can be done to fruit plants or trees by cultivating too deeply and too close to the plants.
Several generalizations can be made about chemical weed control in fruit crops that may help growers decide the value of a herbicide program for a particular weed problem.
Weeds are killed most easily when conditions favor germination and rapid plant growth. Satisfactory results
1962 OREGON WEED CONTROL CHART FOR FRUIT CROPS
can be expected if herbicides are applied as directed and under normal conditions. Unusual temperatures or rain- fall at the time of, or soon after, application of herbi- cides may cause unsatisfactory results.
Young weeds are more easily killed than well estab- lished weeds. Many herbicide programs for fruit crops are effective only in preventing new weeds from starting.
Soil characteristics, such as clay content and organic matter level, strongly influence the effect of some herbi- cides. Heavier soils usually require higher rates of application of herbicides to obtain weed control than do lighter, sandy soils.
It is necessary to apply the correct amount of herbi- cide uniformly over the control area. In order to do this, quantities of chemicals must be measured carefully, application equipment calibrated accurately, and applica- tion made carefully.
Fruit growers should learn as much as possible about the herbicides they are using. Information on loss by evaporation, movement with soil moisture, and limita- tions of certain weed species will aid in making most effective use of the control programs listed in this leaflet.
This is one of a series of Fact Skeets reporting Cooperative Extension work in agriculture and home econom- ics, F. E. Price, director. Printed and distributed in furtherance of Acts of Congress of May 8 and June 30, 1914. Oregon State University, Oregon counties, and U. S. Department of Agriculture cooperating.
CROP CHEMICAL
APPLICATION RATE PER ACRE
TIME REMARKSACTUAL FORMULATION BLACKBERRIES
(and other trailing berries)
BLUEBERRIES GOOSEBERRIES
& RASPBERRIES
Karmex diuron 2,4-D amine Dinitro general
plus CIPC
3.2 lbs. lb.
2 lbs. Dinitro 6 lbs. CIPC
4 lbs. of 80% 1 pint 3 pts. Dinitro H gals. CIPC
Winter After harvest Winter
For broadleaf perennial weeds
CRANBERRIES Stoddard solvent
Amitrole
IPC
Simazine
To wet weeds
2 lbs.
8 lbs.
4 lbs.
4 lbs. of 50%
40 lbs. of 20% granular
100 lbs. of 4% granular
Anytime
Within 10 days after harvest
Spring or after harvest
After harvest
Use as a spot treatment
Rate cut in half for spring
FS7 5-62
1962 OREGON WEED CONTROL CHART FOR FRUIT CROPS (Continued)
CROP CHEMICAL
APPLICATION RATE PER ACRE
TIME REMARKSACTUAL FORMULATION GRAPES Karmex diuron
Simazine
3.2 lbs.
32 lbs.
4 lbs. of 80%
4 lbs. of 80%
Early spring
Early spring
Application may be split and half applied in fall Application may be split and half applied in fall
STRAWBERRIES New plantings
Established plantings
Falone Sesone
Simazine
2,4-D amine
Simazine
Dinitro general plus IPC
4 lbs. 3.6 lbs.
1 lb.
1 lb.
1 lb.
2 lbs. Dinitro 6 lbs. IPC
I gal. 4 lbs. of 90%
U lbs. of 80%
1 qt.
11 lbs. of 80%
3 pts. Dinitro 3 gals. IPC
Before planting One week after
planting One month after
planting Within 2 weeks
after harvest After harvest
and/or after last cultiva- tion in fall
In winter when plants are dormant
Incorporate by shallow tillage Requires soil. surface moisture
Requires soil surface moisture
Requires soil surface moisture
APPLES
Nonbearing apples
Simazine or Karmex diuron
plus amitrole or amitrole-T
Amitrole or amitrole-T
3.2 lbs. simazine or 3.2 lbs. diuron 2 lbs. amitrole or 2 lbs. amitrole-T 4 lbs. amitrole or 4 lbs. amitrole-T
4 lbs. of 80% 4 lbs. of 80% 4 lbs. of 50% 1 gal,
8 lbs. of 50% 2 gals.
After harvest in fall but before fruit forms in spring
When weeds are growing well
For control of certain perennial weeds
APPLES APRICOTS PEACHES PEARS PLUMS and
PRUNES
Dalapon 8,5 lbs. 10 lbs. of 85% In spring; re- peat if needed
For control of grass
PEARS Karmex diuron plus amitrole or ainitrole-T
3.2 lbs. diuron 2 lbs. amitrole or 2 lbs. amitrole-T
4 lbs. of 80% 4 lbs. of 50% 1 gal.
After harvest in fall but before fruit forms in spring
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