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<br /> AUG 31 `t0''N1�A� -
<br /> Weather Conditions conditions of highersoll moisture than from textured solls;however,it the soil moisture
<br /> • To determine if unfavorable weather conditions exist or are predicted(see Identifying Is too high,fumigant movement will be retarded and effectiveness of the treatment will
<br /> Unfavorable Weather Conditions section) and whether an application should be reduced.Previous and/or local experience with the sail to he treated or the crop to
<br /> proceed,the National Weather Service weather forecast must be checked by the certified he planted can often serve as a guide to conditions that will be acceptable.If there Is
<br /> appllcatorsupervlsing the application: uncertainty in determining the soil moisture content of the area to be treated,a local
<br /> 0 on the day of,but prior to the start of the application.aid extension service or soli conservationist or pest control advisor(agriculture consultant)
<br /> 0 on a daily basis during the application if the time period from the start of the application should be consulted far assistance.
<br /> until the application Is complete Is greater than 24 hours. • if them Is Insufficient moisture throughout the top six Inches below the surface of soil
<br /> • Do not apply if an alr-staAnaOm advisory issued by the National Weather Service is in immediately prior to the application,the sail moisture must be adjusted. If them is
<br /> effect for the area In which the application is planned,during the application,or the 48 adequate soll moisture below six Inches,sail moisture can be brought to the surface by
<br /> hours after the application Is complete. tillage prior to the application.To conserve soil moisture,tillage should be done as close to
<br /> • Do not apply If light wind conditions(<2 mph)are forecast to persist for mom than 18 the time of application as possible.
<br /> consecutive hours from the time the application starts until 48 hours atter the application Flushing Irrigation Lines
<br /> is complete. • Do not allow fumigant to remain in the Irrigation system after the application Is complete.
<br /> • Detailed National Weather Service forecasts far local weather condtions,wind speed,and After application of the fumigant,gush the Injection and Irrigation system with untreated
<br /> atslagnationadvisorles may hoobtdnedonlini htte://www.nws.noaa.aov on NOAA water.The flush time must be adequate to purge the fumigant from the injection and
<br /> weatherradio,or by contacting your local National Weather Service Forecasting Office. initiation system,but should be less than the amount that could over-saturate the beds.if
<br /> Identifying Unfavorable Weather Conditions common lines are used for built the Nmlgant application and the water treatmerlllseal(if
<br /> • Unfavorable weather conditions block upward movement of air,which results in trapping applied),these lines must be adequately flushed before starting the watertmatmentimal.
<br /> fumigant vapors near the ground.The resulting air mass can move off-she in unpredictable Application and Equipment Directions
<br /> directions.These conditions typically exist prior to sunset and continue past sunrise and Anil-slphon and tack-flow prevention devices must be Installed and in working order.
<br /> persist as late as noontime.Unfavorable condtions are common on nights with limited . Tanks must be In good condition to ensure product does not spill of leak.
<br /> ofoudcoverand light to no wind and their presence can be Indicated by ground fag or smog . Tanks must have sealable covers on access parts.
<br /> and can also be ldenti0ed by smoke from a ground source that flattens out below a ceiling . Tanks must have proper pesticide labels affixed to them.
<br /> layer and moves laterally In a concentrated cloud. • All tanks,hoses,filings,valves and connections must be serviceable,tightened,sealed
<br /> Sol]Conditions and not leaking.
<br /> • Soil must he in good filth,free of large clads,and tiled at a minimum to the depth of the Use only tanks,hoses and fittings designed to withstand the pressure of the system and
<br /> treatment zone.Large clods can prevent effective soil sealing and reduce effectiveness resistant to metam.
<br /> of the application.if subsurface soil compaction layers(hardpans)us present within the • Use only positive displacement pumps,Do NOT use lmpellors made of brass,aluminum,or
<br /> intendedfumigation treatment zone,a deep tillage to fracture these layers mustoccur prior galvanized material.
<br /> toordud the soil fumigant application. • For undiluted product.aluminum,brass,copper,galvanized Iran,and zinc materials cannot
<br /> • Plant residue that Is present must not Interfere with the application or the soil seal.Non- be mod.
<br /> decomposed plant material may harbor pests that will not be controlled by fumigation. • The system must contain a functional check valve,vacuum relief valve,Inspection port,
<br /> Except when applying over cover crops as set forth in the Product Instructions,or end Ido-pressure drain appropriately located an the irrigation pipeline to prevent water
<br /> residue that Is present must lie flat to yemit the soil to he sealed effectively and limit source contamination from hackflow,
<br /> the natural'chimneys'that may occur In the soil when plant residue Is present.These • The pesticlde infection pipeline must contain a funetlonal,automatic,quick-closing check
<br /> 'chimneys"allow the soil fumigants to move Through the Boll quickly and escape Into the valve to prevem 0 Flow of fluid lowaN the InJectlon pump, q
<br /> atmosphere.This may create potentlalty harmful conditions for workers and bystanders The pesticide injection pipeline must also contain a functional,normally-dosed,solenoid-
<br /> and limits the efficacy of the fumigant.Plant residue on the field serves to prevent soil operated valve lcooled
<br /> on the intake side of the injection pump and connected to the
<br /> arosion from both wind and water. system Interlock to prevent told from being wandrawn from fire supply tank when the
<br /> Soil Temperature Irrigation system Is either automatically or manually shut down.
<br /> • The system must contain functional Inledocking controls to an[omaticalty shut off the
<br /> • At the beginning of the application,the soil temperature at the injection depth must be pesticide injection pump omen the water pump motor stops.
<br /> between 351 and 90°F,measured a13Inches In depth. The tan in Ilne or,
<br /> pump must include a fwctlonal pressure switch that will stop
<br /> • If air temperatures have been above 100aF In any of the three dayys pprior to application, the water pump molar when the water pressure decreases to the point where pesticide
<br /> then soil temperature must be measured and recorded in the FMP. 8ecord temperature dstribullon IS ativarm affected.
<br /> measurements at the application depth or 12 Inches,whichever is shallower. • Systems must use a metedog pump such as a posithre displacement injection pump(e.g.,
<br /> Sall Moisture diaphragm pump)effecfively designed and constructed of materials that are compatible
<br /> • The soil moisture In the top six Inches of soil must be between 60%to 80-A of available with pesticides and capable closing fitted with a system Interlock.
<br /> water capacity immediately prior to the application.subject to the exception below. Drench Applications
<br /> • EXCEPTION:In areas where tall moisture must exceed available water capacity to forma Weather Conditions
<br /> (e.g..certain regions in Florida),soll moisture content may excited the 80%.
<br /> • If appropriate measuring equipment Is not used to determine whether the sail moisture •-To determine If unfavorable weather conditions exist or are predicted(see identifying
<br /> in the top six Inches of soil is between 60%to BU%available water capacity immediately Unfavorable Weather Conditions section) and whether an application should
<br /> prior the application,the USDA Feel and Appearance Method test may be used to proceed,the National Weather Service weather forecast must to checked by the certified
<br /> estimate whether the 60%to 80%still moisture content requirement is met: applicator supervising the application:
<br /> o For coarse textured soils(fine sand and loamy line send)them must he enough o on the day of,but prorto the start of the application,and
<br /> mucidure(50-75%of available water capacity)to form a weak ball with loose and o an a daily basis during the application lithe time period from the start of the application
<br /> clustered sand gralms on fingers,darkened color,moderate water staining on fingers, until the application is complete Is greater than 24 hours,
<br /> will not ribbon. • Do not apply If an alr-stagnation advisory Issued by the National Weather Service is in
<br /> o Far moderately coarse featured soils(sandy loam and Me sandy loam)them must effect for the area In which the application Is planned,during the application,or the 48
<br /> be enough moisture(50-75%af available water capacity)to form a hall with defined boom after the apppplication Is complete.
<br /> fingermarks,vary lighlsoilfwater staining on fingers,darkened color will not stick. Conotapplyffllgm wind Condition(<2 mph)we forecast to persist for mom than 18
<br /> o 'or
<br /> mediumtexNmd solis(sandyclay loam,loam,and sil[loam)them mustmenough consecutive hours train the time the application starts unlit 48 hours atter the application
<br /> moishm(50-75%of available water capacity)M form a ball,very light staining an is complete.
<br /> fingers,darkened color,pliable,and farms a weak ribbon between the thumb and Detailed National Weather Service forecasts for local weather conditions.wind speed.
<br /> forefinger
<br /> and air stagnation advisories may be obtained online ah http,//www.nws.noaa.up
<br /> ture
<br /> o For floe textured soils(clay,clay loam,and silly clay Icom)there must be enough on NOAA weather redo,or by contacting your local National Weather Servico Forecasung
<br /> of
<br /> (50-75%of avalleb1,water caP_M to form a smooth ball with defined Office.
<br /> finger marks, light millwamr staining on fingers, ribbons between thumb and Identifying Unfavorable Weather Conditions
<br /> forefinger' • Unfavorable weather conditans block upward movement of at,which results In trapping
<br /> o Forfleld( osthmore than must cmply with sdl mill moi content In the lightest tumlgamvapors near the ground.The resulting airmass can move off-she in unpredictable
<br /> textured(most sandy)areas must comply with this sail moisture moisture m directors.These conditions typically exist odor to sunset and continua past sunrise and
<br /> field may should
<br /> divided into areas de similar soil texture and the soli moisture of each persist as late as noontime.Unfavorable conditions am common on nights with limited
<br /> area should be adjusted as needed.Coarser textured soils can be fumigated under cloud coverand lightto no wind and thelrpmsence can he Indicated byground fog arming
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