CO0040238 - Laserfiche WebLink

Home Browse Search

i A'�G 31 Za15 ':WqihnNMENTAI - r-l-n,rr application,the sail mofslure must 6e adjusted.ff there is adequate soil molsture below six Covering the created soil with 3-5 inches of untreated sail,DR Inches,soil moisture can be brought to the surface by tillage before or during Injection.To • Applying a minimum of a A-lach of water beginning immediately after application begins conserve existing soil moisture,tillage should be done as close to the time of application and completing the water treatment within Pour hours,On as possible. Covering treated area with a tarp. Application and Equipment Directions Tarps(when tarps are used In Sectagon 42 applications) • Do not apply or allow fumigant to drain or drip onto the soil surface. • A written tarp plan must be developed and included in the FMR + Application equipment must be In good working order. • Once a larp is perforated,the application is no longer considered tarped. • All tanks,hoses,flUings,valves and connections must be serviceable,tightened,sealed Sail Temperature and not leaking. • Dry disconnect couplings(closed transfer system)must be installed on ell tanks and At the beginning of the application;the soil temperature at the injection depth must be transfer hoses. between 35'and 94'F. • Sight gauges and pressure gauges must be properly functioning, IP air temperatures have been above 1 Q01 in any of the three days prior to application, • Nozzles and metering devices must be the correct size and sealed and unobstructed. then soil temperature must be measured and recorded In the FMR.Record temperature: • Use only tanks,hoses and fittings designed to withstand the pressure of the system and measurements at the application depth or 12 inches,whichever Is shallower. resistant to motam, Sall Moisture + Each nozzle must be equipped with a flaw monitor,e.g.mechanical,electronic,orBod-ball + The soil moisture In the top six inches of sail must be between 60%to 80%of available type monitor. water capacity immediately prior to the application,subject to the exception below. • For undiluted product,aluminum,brass,capper,galvenized Iron,and zincmaterials cannot • EXCEPTION;In areas where soil moisture must exceed available water capacity to form a be used. bed(e.g.,certain regions In Florida),soil moisture content may exceed the BO%. • Ail rigs must include a filter to remove any particulates from the fumigant;and a check . If appropriate measuring equipment Is not used to determine whether the soil moisture valve that is visible to the tractor pilot during application to prevent 6ckfiow of the in the top six Inches of soil Is between 60%to 60%availabla water capacity Immediately fumigant Into the pressurizing cylinder. prior the application,the USDA Feel and Appearance Method lest may be used to • Before using a fumigation rig for the first time,or when preparing it for use after storage, estimate whether the 60%to 80%sail moisture content requirement is met: the operator must check the following items carefully: © For coarse textured soils(fine sand and loamy fine sand)theta must be enough I Check the filter,and clean or replace the filter element as required moisture(50-75%of available water capacity)to farm a weak ball with loose and — Check all tubes and chisels to make sure they are free of debris and obstructions, clustered sand grains an fingers,darkened color,moderate water staining on fingers, Check and clean the critics plates. will not ribbon. Rotary Tiller Applications o Far moderately coarse textured soils(sandy roam and fine sandy loam)there must be enough moisture t54-75%of available water capacity)to farm a ball with defined Weather Conditions finger marks,very light soillwater staining on fingers,darkened color will not stick, • To determine If unfavorable weather conditions exist or are predicted(see identifying o For medium textured soils(sandy clay loam,loam,and silt loaml there must be enough Unfavorable Weather Conditions section) and whether an application should moisture(50-75%of available water capacity)to form a ball,very ligght staining on proceed,the National Weather Service weather forecast must be checked by the certified fingers,darkened color,pliable,and forms a weak ribbon between 1ha thumb and applicator supervising the application forefinger. r, on the day of,but prior to the start of the application,and p For fine textured soils(clay,clay loam,and silty clay loam)there must be enough o. on a daily basis during the application if the time period from the start of the application moisture(50-75%of available water capacity)to farm a smooth ball with defined until the application Is complete Is greater than 24 hours. finger marks, light scll/water staining on fingers, ribbons between thumb and • Do not apply i(an air-stagnation advisory issued by the Nalienal Weather Service is in forefinger, effect for the area In which the application is planned,during the application,or the 48 For fields with mora than one soil texture;soil moisture content in the lightest hours after the application is complete. textured(most sandy)areas must comply with this soil moisture requirement The • Do not apply If light wind conditions(<2 mph)are forecast to persist for mora than 18 field may be divided into areas of similar soft texture and the soil moisture of each consecutive hours from the time the application starts until 4B hours after the application area should be adjusted as needed.Coarser textured soils can be fumigated under Is complete. conditions of highersoil moisture than finer textured soils;however,if the sail moisture • Detailed National Weather Service forecasts for local weather cor lfions,wind speed, is too high,fumigant movement will be retarded and effectiveness of the treatment will and air stagnation advisories may be obtained enllne at bnp;flwww.nws.noaa.gov. be reduced,Frevieus anther local experience with the soil to be treated or the crop to on NOAA weather radio,or by contacting your local National weather Service Forecasting be planted can often serve as a guide to conditions that will be acceptable.If there Is Office. uncertainty in determining the sail moisture content of the area to be treated,a local identifying unfavorable Weather Conditions extension service or soli conservationist or pest control advisor(agriculture consultant) + Unfavorable weather conditions black upward movement of air,which results In trapping should be consulted for assistance. PP g • If there Is insufficient moisture throughout the top six inches of soil Immediately prior to the fumigant vapors near the ground.The resulting air mass can move off-site In unpredictable application,the soil moisture must be adjusted,If there,Is adequate sail moisture below six directions.These conditions typically exist poor to sunset and continue past sunrise and inches,soil moisture can be brought to the surface by tillage before or during injection.To persist as late as noontime.Unfavorable conditions are common on nights with limited conserve existing soft moisture,tillage should be done as close to the time of application cloudcoverandlighttonowindandtheirpresencecanbeindleatedbygroundfogorsmog as possible. and can also be identified by smoke from a ground source that flattens out below a ceiling Ileatfen layer and moves laterally In a concentrated cloud. Application and Equipment Directions Sail Conditions,injection Depth,and Soil Sealing Do net apply or allow fumfgantto drain or drip ante the soil surface. • Sell must be in goad filth,free of large clods,and tilled at a minimum to the depth of the Application equipment must be in good working order treatment zone.Large clods can prevent effective soil sealing and reduce effectiveness All tanks,hoses,fittings,valves and connections must be serviceable,tightened,sealed of the application.if subsurface sail compaction layers(hardpans)are present within the(hardpans) and not leaking. intendadfumigatfontreatmentzone,adeeptillagetofracturetheselayersmustoccurprior Dry disconnect couplings(closed transfer system)must be installed an all tanks and to or during the soil fumigant application. transfer hoses. • 51ght gauges and pressure gauges must be properly functioning. • Plant residue that is present must not interfere with the application or the soil seal.Non- Nozzles and metering devices must be the correct size and sealed and unobstructed. decomposed plant material may harbor pests that will not be controlled by fumigation. • Use only tanks,hoses and fittings designed to withstand the pressure of the system and Crop residue that is presert must lie fiat to permit the soil to be sealed effectively and limit resistant to matam. the natural"chimneys"that may occur In the soil when plant residue is present.These Each nozzle must be equipped with a flow monitor,e.g,mechanical,electronic,or tied-ball "chimneys"allow the sell fumigants to move through the soil quickly and escape into the type monitor. atmosphere.This may create potentially harmful conditions for workers and bystanders For undiluted product,aluminum,brass,copper,galvanized iron,and zinc materials cannot and limits the efficacy of the fumigant.Plant residue on the field serves to prevent suit be used. erosion from both wind and water. • All rigs must include a filter to remove any particulates from the fumigant,and a check Sprayordrip the product mixture on To soli immediately ahead of the bed-shaping equipment valve that Is visible to the tractor driver during application to prevent backflow of the or tiller.The soil surface must be compacted Immediately after application using one or more fumigant Into the pressurizing cylinder. of the following methods; • Before using a fumigation rig for the first time,or whon preparing It for use after storage, • Compaction with a bed-shaper,roller,press wheel,coil packer,ring packer,or similar the operator must check the following items carefully: device,OR — Check the filter,and clean or replace the filter element as required. B aeusgan42,_2013.indd 8 Y.h 6/2/2015 10:25:53 AM