CITRUS - CALIFORNIA, ARIZONA - FINE SOIL
Krovar I DF Herbicide is a dispersible granule to be mixed in water and applied as a spray for selective control of weeds in citrus and for non-crop weed control.
Krovar I DF Herbicide controls many annual weeds and, at the highest rates allowed by this label, it controls certain perennial weeds.
Moisture is necessary to move the herbicide into the root zone of weeds. Best results are obtained if treatment is made to moist soil, and moisture is supplied by rainfall or sprinkler irrigation within two weeks after application. Weed control symptoms are slow to appear and may not become apparent until the herbicide has been carried into the root zone of the weeds by moisture. The degree and duration of control will vary with the amount of herbicide applied, soil texture, rainfall, and other soil and water management practices.
USE PRECAUTIONS AND RESTRICTIONS
Krovar I DF Herbicide is not to be used in any recreational areas or around homes. Injury to or loss of desirable trees or other plants may result from failure to observe the following:
Do not apply (except as recommended for crop use), or drain or flush equipment on or near desirable trees or other plants, or on areas where their roots may extend, or in locations where the chemical may be washed or moved into contact with their roots. Do not use on lawns, walks, driveways, tennis courts or similar areas. Do not use in home fruit plantings nor in citrus orchards interplanted to other trees or desirable plants. Prevent drift of dry powder or spray to desirable plants. Keep from contact with fertilizers, insecticides, fungicides, and seeds.
Do not apply this product through any type of irrigation system.
Do not graze cattle in treated areas.
Treated areas may be planted to citrus trees one year after last application. Do not replant to other crops within two years after last application as injury may result.
NOTE: Additional Precautions
Avoid storage of pesticides near well sites.
Calibrate sprayers only with clean water away from the well site.
Measure out only enough Krovar I DF Herbicide for the job at hand.
Avoid over-filling the spray tank.
Do not discharge excess material as a point source.
Dilute and agitate excess spray solution and apply at labeled rates.
CROP ROTATION BIOASSAY
In sites where Krovar I DF Herbicide has been used, a field bioassay should be completed prior to planting any desired crop. In arid climates (10 inches of rainfall or less) or areas where drought conditions have prevailed for one or more years, a field bioassay must be completed prior to planting any desired crop.
A successful field bioassay means growing to maturity a test strip of the crop(s) intended for production. The test strip should cross the entire field including knolls and low areas. The results from the bioassay may require the two-year crop rotation interval to be extended.
When herbicides that affect the same biological site of action are used repeatedly over several years to control the same weed species in the same field, naturally-occurring resistant biotypes may survive a correctly applied herbicide treatment, propagate, and become dominant in that field. Adequate control of these resistant weed biotypes cannot be expected. If weed control is unsatisfactory, it may be necessary to retreat the problem area using a product affecting a different site of action. To better manage herbicide resistance through delaying the proliferation and possible dominance of herbicide resistant weed biotypes, it may be necessary to change cultural practices within and between crop seasons such as using a combination of tillage, retreatment, tank-mix partners and/or sequential herbicide applications that have a different site of action. Weed escapes that are allowed to go to seed will promote the spread of resistant biotypes. It is advisable to keep accurate records of pesticides applied to individual fields to help obtain information on the spread and dispersal of resistant biotypes. Consult your agricultural dealer, consultant, applicator, and/or appropriate state agricultural extension service representative for specific alternative cultural practices or herbicide recommendations available in your area.
INTEGRATED PEST MANAGEMENT
This product may be used as part of an Integrated Pest Management (IPM) program that can include biological, cultural, and genetic practices aimed at preventing economic pest damage. IPM principles and practices include field scouting or other detection methods, correct target pest identification, population monitoring, and treating when target pest populations reach locally determined action thresholds. Consult your state cooperative extension service, professional consultants or other qualified authorities to determine appropriate action treatment threshold levels for treating specific pest/crop systems in your area.
Apply Krovar I DF Herbicide with a properly calibrated fixed-boom power sprayer as a band or broadcast treatment. Apply any time of year provided overhead moisture (rainfall or sprinkler irrigation) is available to activate the herbicide, preferably just before or just after weeds have germinated.
All use rates of Krovar I DF Herbicide are expressed for broadcast treatments. For band treatments, use proportionately less.
Use sufficient spray volume (minimum of 10 gallons per acre) to provide uniform coverage of the treated area and to allow proper dispersion and suspension of the product in the spray tank. Continuous agitation in the spray tank is required to keep the product in suspension. Agitate spray tank contents by mechanical or hydraulic means. If a by-pass or return line is used, it should terminate at a bottom of tank to minimize foaming. Do not use air agitation.
Best results are obtained if Krovar I DF Herbicide is applied to bare ground. If weeds are present at application, tank mixtures with foliar active herbicides are recommended (see Tank Mixtures section of label). If dense populations of hard-to-kill weed species are present, control of these weeds prior to application of Krovar I DF Herbicide is recommended.
NOTE: Use the highest rates allowed by this label for best control of perennial weeds listed on this label. Partial control of perennial weeds can result with only a single treatment of Krovar I DF Herbicide. Repeat applications are required (in season and/or annually) for best control of the perennial weeds on this label. Control of perennials may be improved by cultivation prior to treatment, otherwise, avoid working the soil as long as weed control continues or else effectiveness of the treatment may be reduced.
Apply Krovar I DF Herbicide as a band or broadcast treatment beneath and/or between trees. Aerial application is prohibited in citrus.
Avoid contact of citrus foliage and fruit with spray or mist. Avoid overlapping and shut off spray boom while starting, turning, slowing or stopping as injury to trees may result.
Temporary yellowing of citrus leaves may occur following treatment. As injury to citrus trees may result, do not use on soils with less than 1% organic matter. Do not use on poorly drained soils, gravelly soils or thinly covered or exposed sub-soils.
Do not treat trees planted in irrigation furrows. Do not treat diseased or stressed citrus trees. Do not use in citrus groves inter-planted with other trees or desirable plants or in areas where roots of desirable plants or trees may extend, as injury may result.
For all states listed below, when making multiple applications, do not apply at less than 60 day intervals to trees less than 4 years old and 80 days to trees 4 years old or greater. A maximum of two applications of product per year is allowed.
Thoroughly clean all traces of Krovar I DF Herbicide from application equipment immediately after use. Flush tank, pump, hoses and boom with several changes of water after removing nozzle tips and screens (clean these parts separately.)
CALIFORNIA, ARIZONA Trees Established for at least Three Years: Best results occur when applied in late fall or early winter, but before winter annuals become well established. Application should be made after the first fall or early winter rains have settled the soil.
For the initial treatment, apply 5-6 pounds per acre on fine soils, or soils with organic matter of 2 1/2% or more. Do not exceed 6 pounds per acre per year.
Use the highest rate allowed by this label where groundsel or puncturevine are known to be a problem. These rates will also suppress low density stands of bermudagrass and yellow nutsedge.
Repeat annually for best treatment effect.