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Cover2 - Extension - Purdue Extension · 2. Select A Corn Variety with Good Vigor, Cold Tolerance, and Disease Resistance Early growth is critical for no-till corn. Somewhat poorly

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Page 1: Cover2 - Extension - Purdue Extension · 2. Select A Corn Variety with Good Vigor, Cold Tolerance, and Disease Resistance Early growth is critical for no-till corn. Somewhat poorly

AY-313

Page 2: Cover2 - Extension - Purdue Extension · 2. Select A Corn Variety with Good Vigor, Cold Tolerance, and Disease Resistance Early growth is critical for no-till corn. Somewhat poorly

A Dozen Do’s for Successful No-till CornFollowing Soybeans

1. Equip Your Combine to Chop and Evenly Spread Residue . . . . . . . . . . . . . . . . . . . . . 3

2. Select A Corn Variety with Good Vigor, Cold Tolerance, and Disease Resistance . . . 4

3. Do Not Plant Into Live Vegetation - Burn Down Weeds Well Before Planting . . . . . . 5

4. Maintain and Adjust the Planter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

5. Use Starter Fertilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

6. Minimize the Risk of Nitrogen Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

7. Rely on Soil Conditions to Determine Planting Date . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

8. Planter Efficiency and Stand Improvement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

9. Scouting for Insects, Rodents, Weeds, and Disease . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

10. Soil Testing: Lime, Phosphorus, and Potassium Management . . . . . . . . . . . . . . . . . . 10

11. Control Traffic to Prevent Unnecessary Soil Compaction . . . . . . . . . . . . . . . . . . . . . . 11

12. Seek Advice from Successful No-Tillers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

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This bulletin summarizes the experiences ofExtension personnel, conservationists, crop advisors,researchers, and farmers with no-till. The lessons learnedfocus on twelve principles that need to be observed tomake no-till corn following soybeans successful.

No-till corn following soybeans presents bothchallenges and opportunities for cost savings and soilconservation for farmers in Indiana. On better drainedsoils, no-till has been very successful, but on somewhatpoorly and poorly drained soils it can be more difficultto maintain high yields. Over the years, many farmershave successfully managed the transition from fullwidth tillage to no-till on soils with drainage problems.Research and demonstration plots have contributed togreater understanding of how to best manage thistransition.

If you are not currently using no-till, therecommendations in this bulletin may help you avoidpotential problems when you make the transition fromfull width tillage. If you are already using no-till, thisinformation may address your concerns or improveyour management. If you have tried no-till for corn,but were not pleased with the results, the principles wediscuss may help you give it further consideration.

1. Equip Your Combine to Chop andEvenly Spread Residue

Even distribution of residue is important for smoothplanter operation while direct seeding the followingspring. If the residue is in windrows, it will likelyimpact seed depth because the gauge wheels of theplanter passing over the top of a mound of residue willtend to pull the openers up to a shallower soil depth.Uneven residue distribution can also influence planterslot closing and seed-to-soil contact. In other placesthat have no residue cover the openers may penetratetoo deeply into the soil. All of these difficulties cancause irregular emergence and/or reduced population.Uniform emergence and spacing are important formaximum corn yield.

A Dozen Do’s for Successful No-till Corn Following Soybeans

Gary C. Steinhardt, Purdue Extension Agronomist;Kenneth J. Eck, Purdue Conservation ProgramSpecialist; Ronald J. Boehm, IDNR – Division of SoilConservation, Agriculture Conservation Specialistand Darrell E. Brown, USDA – NRCS, Agronomist

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Uneven residue distribution leads to uneven soildrying at the surface in the spring. This can lead todelays in planting and poor tilth in the areas of the fieldplanted under wet conditions.

An even distribution of residue begins at harvest.Cut the crop as high as possible to leave stalks in place.These stalks will catch the residue distributed from thecombine. This also helps reduce the amount of residuemoved by the wind or water. It is essential that thecombine chop the stalks that have been taken up andspreads them as uniformly as possible across the widthof the combine swath.

Wind and water can move large amounts of residue.These natural processes tend to concentrate rather thanevenly distribute residue. The concentrations of residuethat result can cause significant problems for the planter.

In areas with unevenly spread residue, some typeof residue cleaner may be needed. Properly set, aresidue cleaner can remove a narrow band of residueand help the planter work more efficiently. It will alsohelp avoid problems associated with poor residuedistribution in some parts of the field. Some farmersuse residue cleaners to maintain more consistentplanting depth. Rows warm faster where residue hasbeen removed, but the relative benefit may be dependenton soils.

2. Select A Corn Variety with Good Vigor,Cold Tolerance, and Disease Resistance

Early growth is critical for no-till corn. Somewhatpoorly and poorly drained soils are usually lessfavorable for rapid early growth with no-till becausethey warm more slowly in the spring. It is important toselect a variety that has the best chance to perform wellunder cooler and wetter conditions. Well drained soilsare generally drier and warmer in the spring and varietychoices for these soils may not be as critical.

Seed Selection for No-Till ConditionsFirst, demand the best high quality seed. No-till

systems frequently result in more stressful germinationconditions that are cooler and wetter than full widthtillage. Starting with top quality seed gives the crop anadvantage from the beginning. Seed quality is mostcommonly documented by warm germination testscores listed on the seed tag. Ask your seed dealer forcold germination test scores also. Most seed companiesroutinely reject seed lots that test less than 85 percentcold germination. For no-till, consider rejecting seedlots whose cold “germ” ratings are less than 90 percent.

Next, consider the variety’s potential for emergenceand early-season growth. Many seed companies

rate their hybridsfor emergence and/or early vigor. Payclose attention topublished differ-ences among hybridswhen making selec-tions for no-till andplace higher priorityon those hybridswith superior emer-gence and earlyplant vigor ratings.

Starting with residue evenly spread over the field atthe beginning makes it more likely to stay in place untilthe next planting season. Even with residue spreaders,there are some landscapes where it will be difficult tomaintain a uniform distribution because of movementby wind and water.

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Another attribute to consider is root and stalk healthcharacteristics. Rooting depth in no-till systems is oftenshallower than in full width systems because ofdifferences in soil temperature, soil moisture, and nutrientavailability. Hybrids with superior rooting characteristicsmay perform better under these conditions. The greateramounts of surface residue in no-till contribute to agreater risk of leaf and stalk diseases that can translateinto stalk rots later in the season. Hybrids with superiorstalk strength and health characteristics will lessen therisk of lodged corn at harvest.

Finally, consider the hybrid’s ability to withstandinsect and disease pressures. With higher residue levels,unwanted pests can develop. By using more resistantvarieties, as well as employing crop rotations to reducecorn after corn problems, many pest problems can bereduced or eliminated. The ability of the hybrid towithstand specific herbicide programs should also beconsidered, since changes in herbicides are oftenneeded as traditional problem weeds are eliminated orsucceeded by other species.

3. Do Not Plant Into Live Vegetation -Burn Down Weeds Well Before Planting

Living vegetation creates too much competition forsmall corn plants in terms of available soil moistureand light for early growth. Such competition has animmediate and negative effect on early growth and standestablishment. This is nearly impossible to overcomelater in the season. If weeds are present prior to plantingtry to apply your burn down herbicide(s) in time toensure that they are dead when the field is planted.

4. Maintain and Adjust the PlanterUniform seed depth and seed-to-soil contact are

essential for success with no-till corn. The key is aproperly adjusted and maintained planter. Worn partsshould be replaced as needed and lubrication completedon schedule, according to the specifications of themanufacturer. Some planters are not designed for no-till. No-till corn planters are generally sturdier and morerugged in construction due to the inevitable increasedweight required when planting without a preparedseedbed. The extra weight will make it easier for theplanter units to penetrate the soil for seed placement.

Planter AdjustmentsOne of the simplest and least expensive forms of

maintenance is to level the planter and adjust unitheight. Planter units that are not level can negativelyinfluence seed placement and depth, furrow closingefficiency, and can limit the effectiveness of planterattachments in front of the units.

Farmers should check daily to see if their planter islevel front-to-back and side-to-side, especially withplanters over eight rows in width. Daily operation,changes in field conditions or in the planter itself, suchas leaking cylinders, can greatly impact how level aplanter remains.

Planter down pressure springs should be set so thatdepth gauge wheels are in firm contact with the soil.Too little down pressure can reduce seeding accuracy,place seeds too shallow, and fail to penetrate increasedresidue cover. Excessive down pressure can lift thetool bar and drive wheels off the ground and causeslippage in the seed metering mechanism, which mayreduce stands.

CoultersNumerous types of coulter designs and sizes are

available. These include smooth, fluted, and rippledcoulters. Coulter selection depends on field conditionsand personal preference, with the three quarter inch orone inch fluted coulter the most commonly used.

In general, wider coulters increase tillage andrequire additional weight for penetration (about 400 to600 pounds per coulter). Smooth and rippled coultersusually require less weight, perform less tillage, slicethrough residue more easily, and allow for higherplanting speeds than fluted coulters.

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Worn PartsAmong the most common parts to wear out on a

planter, especially in no-till are the parallel linkagebushings. Worn bushings allow the parallel linkage totwist and allow row units to wander from side to side,causing row spacing problems. Total loss of thebushings can damage the linkage and, in extreme cases,allow row units to slide into the fertilizer band furrows.In cases where large areas are planted with the samemachine, some manufacturers recommend replacingbushings annually.

Worn double-disk openers can affect seed placementand the ability of the planter to cut through residue.Damaged or bent press wheel shafts affect seedplacement. Loose chains or drive units affectpopulation. Improperly aligned press wheels reduceseed-to-soil contact needed for good emergence.

Planter AttachmentsCheck the adjustment of row attachments, especially

row cleaners. Row cleaners and other attachments thatoperate too deep will move excessive amounts of soil.This can cause the attachment to push against the rowunit and disrupt seed placement. Running too deepcan also cause the attachments to vibrate excessivelyand wear out prematurely. It can also leave a permanentdepression in the row, which is difficult to manage.

Seed firmers or narrow press wheels may be usedto improve seed-to-soil contact. Press wheels and seedfirmers are added just behind the seed furrow openers,and they press the seeds into the bottom of the furrow.

Furrow covering devices, such as small disk blades,angled wheels, small press wheels, or any combinationof these devices, can in some cases help get good seedcoverage by covering and firming the soil surface abovethe seed furrow. Such devices are also mounted behindthe seed openers to improve seed coverage.

Strip or Zone TillageIn fields where there are concerns about low soil

temperatures and/or wet soil conditions, the use ofmultiple coulters, row cleaners, tines, or combinationsof these devices for additional soil disturbance andaeration may be beneficial for no-till corn. Soildisturbance is limited to a narrow band six to eighteeninches wide in the fall or spring, and may includeapplications of N, P, or K into the soil. The depth andwidth of tillage depends on operations and goals of thepass (i.e. fertilizer incorporation, aeration), and mayvary from field to field depending on soil type, moisture,residue levels and other factors.

In general, strip or zone tillage shows the greatestbenefit in northern Indiana, where additional heat unitsare needed for early seedling emergence. It alsoprovides an opportunity to plant earlier. In southernIndiana the benefits are not as great, with little tono effect due to warmer conditions earlier in thegrowing season.

5. Use Starter FertilizerAs referred to here, starter fertilizer is applied at

planting in a band two inches to the side and two inchesbelow the seed. Nitrogen has been the one nutrient instarter fertilizer that always has a response in no-till

corn studies. Recommended rates vary from 20 lbs./acre to 50 lbs./acre of actual N. The remainder of thenitrogen is applied either pre-plant or sidedress. Withnutrient stratification, potassium is the next most likelynutrient to be needed. Check levels of availablepotassium to see if a response may be likely.

6. Minimize the Risk of Nitrogen LossNitrogen (N) management is a concern in any

system. This is especially true for no-till. Efficientuse of N is the ultimate goal. Factors such as weather,rainfall, soil types, placement, and N source allinfluence how effectively N is used. These factors canbecome even more challenging with no-till, unlessproperly managed.

When properly applied, most sources of N performequally well for maximum efficiency, but losses canoccur by volatilization of ammonia-N, leaching ofnitrate-N, or loss of N with surface runoff and erosion.

Urea based N fertilizers (urea and urea ammoniumnitrate UAN) are most susceptible to volatilizationlosses as the urea portion is transformed to ammonia-N on its eventual way to the nitrate-N form. If suchfertilizers are applied over the crop residue (broadcastor as “weed and feed”) and are not incorporated,

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significant volatilization can occur before rainfalloccurs and moves the N into the soil. Minimize thisrisk of volatilization with urea based fertilizers byinjecting them into the soil with a knife or coulterapplication tool rather than applying them over the no-till surface residues. A less effective intermediatemethod of reducing the risk of surface volatilizationis to apply UAN solutions in a concentrated bandor dribble.

The nitrate-N form of N is most susceptible toleaching or denitrification losses. Commonly used Nfertilizers that contain nitrate-N include UAN andammonium nitrate. Such nitrate containing fertilizershould be applied as close to planting as possible or asa sidedress application, rather than applied very earlyprior to planting to minimize the length of time in whichthe nitrate-N form of N is exposed to leaching ordenitrification.

Anhydrous ammonia has the least initial risk forleaching or denitrification losses of N because of thelengthy process of converting the ammonia to thesusceptible nitrate form. This can take several weeks.This source of N is susceptible to volatilization lossesif the tool used for injection does not adequately closethe knife slot during application.

Timing can contribute greatly to the efficient use ofnitrogen. Due to the variability of over-winterconditions, including temperature fluctuations,precipitation, winter cover and vegetation, fallapplication of nitrogen is not recommended, even whena stabilizing additive is used.

Preplant vs. Sidedress ApplicationsSidedress applications on irrigated sandy soils have

consistently shown greater yields than preplantapplications due to reduced loss of N through leaching.For medium to fine textured soils a small advantagemay exist for the use of sidedress N applications over

preplant applications early in the season when rainfallis excessive and the potential for denitrification is great.

The major potential disadvantage of relying onsidedress applications for the major portion of your Nfertilizer program is that rain and wet conditions mayprevent or delay sidedress applications. The risk is thatcorn may become too tall for ground-driven sidedressapplication equipment.

7. Rely on Soil Conditions to DeterminePlanting Date

Perhaps the most difficult management aspect ofno-till is learning to plant by field conditions ratherthan by the calendar. No-till requires far fewer trips,but planting must be performed when the soil is suitable,if good results are to be expected.

If the soil moisture content is near field capacityand the soil molds easily in your hand, it is probablytoo wet for planting. The planter operation itself canalso be a good indicator. If the seed slot is not closingproperly or the sidewalls of the slot are smearing, thesoil is too wet for planting. If the season is late and

wet soils are a problem, then a seed firmer may be avery good attachment to the planter to get the seed-to-soil contact needed.

A good drainage system can increase the numberof suitable days for field operations. Some think thatmore narrow spacing of tile may be needed for no-tilland the days gained as a result may be of greatersignificance than for full width tillage.

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8. Planter Efficiency and StandImprovement

Planting speeds should not be faster than five milesper hour for uniform stands. Excessive speed can causethe planter to bounce up and down, which can influencethe uniformity of seeding drop as well as uniformity ofseeding depth. Excessive speed can also leave theplanter slot open with seed exposed. Proper speed alsoinsures that attachments function properly to moveresidue, apply or place pesticides, firm seeds in planterslots, and replace soil and residue over seeds.

Seed depth should be set for about one and a halfinches, with the goal of placing the seeds into uniformsoil moisture. In conditions where drier soils exist,planting depths may be as much as two or three inchesto reach moisture needed to insure proper emergence.Seeding depth is critical for no-till. Uneven plantingdepth across a field can result in uneven germinationand uneven stands due to changes in soil temperatureand moisture.

Differences in fields due to soil types, moistureconditions, previous tillage and residue levels, can affectthe depth and operation of the planter in different ways.Seed depth should be checked at the beginning of eachnew field and throughout the day, particularly whenchanges are suspected in field conditions. It is alsoimportant to check the seed-to-soil contact in theplanting process and that the closing wheels areworking to close the slot properly.

Final corn plant populations should normally fallwithin the range of 26,000 to 30,000 plants per acre toachieve maximum grain yield. In full width tillagesystems, seeding rates are normally calculated on thebasis of an assumed 90 percent stand establishment.This is based on a 95 percent germination multipliedby 95 percent seedling survival rate. Seeding rates to

achieve the final populations suggested above shouldbe between 29,000 to 33,000 seeds per acre. This isthe final population, divided by 0.9. If your experiencesays that either the germination or the seedling survivalis likely to be below 95 percent then an adjustment isneeded to insure adequate final population.

9. Scouting for Insects, Rodents, Weeds,and Disease

Fields should be scouted as soon as plants begin toemerge. It is critical to keep accurate, legible notesand maps. Include such factors as weather, growthstage, insects, weeds, unhealthy or missing plants,abnormal field patterns or colors, or any other item thatmay be worth noting. If available, a GPS enabled(Global Positioning System) crop scouting system canbe very helpful in locating areas of concern.

Field borders, ditch banks, fencerows or otheruncharacteristic field areas are poor places to takerandom samples or make observations. Odd areas maygive misleading information about the crop as a whole.

Insect ControlInsect management is similar for no-till, mulch-till

or full width tillage. Scouting and previous insectconcerns should be the major factors affecting the typeand amount of insecticide applied. With a corn-soybeanrotation, differences between the crops can lead to a

reduced number of pests. We would expect insects inlarger numbers with continuous corn. One area ofconcern for insect management is the effect of residueon insect numbers. Residue may provide over-wintering sites for some pests, although these numbersdo not always approach economically damaging levels.Residue may also be of concern when applyinginsecticides. Residue may contain or cover insects andprevent sprays from directly reaching targeted insects.

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Rodent ControlRodents are a

concern in some no-tillcornfields. Meadowvoles (Microtus.pennsylvanicus) andprairie voles (Microtus.orhrogaster) areespecially troublesome.Scout fields in lateMarch to determine ifvoles are present innumbers serious enoughto affect profits. Fiveactive colonies per acreare considered thecritical population thatcan lead to an economic level of damage. Control isachieved through one of three approaches.

First, altering field vegetation discourages voles. Itdoes not kill them directly, but eliminates needed coverand food. Second, using alternative baits, like alteringhabitat, does not actually kill the targeted rodents.Instead, it provides an alternative food source until cornplants are above six to twelve inches tall. At this heightvole feeding no longer significantly affects corn plants.Alternative baits, such as four bushels of cracked corn,two bushels of soybeans, or two bushels of wheat orrye per acre, can be spread to attract the voles. A thirdapproach is the use of zinc phosphide placed in-furrowwith the seed. Zinc phosphide is a rodenticide thatpoisons voles and other rodents. They ingest the poisonwhen they attempt to eat the planted seeds. A controlprogram should include mowing or burning fieldborders or buffer areas in late fall to reduce food sourcesand remove needed cover.

Weed ControlNo-till systems

require a well-managedweed control program.This includes scoutingand proper timing andapplication of controlmeasures. Weeds in no-till shift from thesummer annuals foundin full width and mulch-till systems to morewinter and early summerannuals, biennials, andperennials. Effective

herbicide control programs include the use of earlypreplant, burndown, preemergence, and postemergenceherbicides.

Regardless of the method of application, no-tillherbicides should be applied when annual weeds areless than two inches tall for best control. If herbicides

are applied during planting, booms should be placedin front of the planter, as soil and residue displacedduring planting may shield some in-row weeds and limittheir control. Herbicide applications in the fall are notthe first option due to variability in weed control andconcerns for increased soil erosion, but may benecessary to kill tough perennial weeds.

Early Preplant, Plus Preemergence or PostemergenceEarly preplant (EPP) applications involve applying

herbicides far in advance of actual seed placement. Agoal of mid-April or roughly 30 days prior to plantingis realistic. EPP is best used where early weed growthneeds to be controlled. EPP also gives the additionaladvantage of removing succulent growth needed byseveral insect and rodent species, thereby reducing oreliminating the need for additional pesticides.

Some EPP herbicides can provide both burndownand residual control in corn. EPP herbicides areunlikely to provide season-long weed control,especially if application is made fairly early or ifsignificant amounts of soil are moved during planting.Additional herbicide treatments may be required, suchas splitting applications with combinations such as EPPwith additional herbicides soon after planting, or EPPfollowed by a postemergence herbicide program.

A properly managed EPP program has severaladvantages for weed control, including control of weedsin March or April when cool weather and early rainsenhance herbicide performance. This could eliminatemore expensive burndown herbicide treatments. The

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major disadvantage for EPP is that preemergence orpostemergence treatments may be needed, especiallyfor later-planted corn, for season long weed control.

Burndown, Plus Preemergence or PostemergenceIf EPP treatments are not used, an alternative

application of herbicides is a “burndown” application,in which herbicides such as RoundupTM orGramoxoneTM Extra are used to control vegetationpresent at planting. For earlier plantings, a burndownapplication may not be needed, as few weeds arepresent. For EPP and burndown applications,postemergence herbicides should be used if additionalweed control is needed. The type of postemergenceherbicide needed later in the season will depend on thetypes of weeds present in the no-till corn being scouted.

DiseaseScouting for disease is important. There are few

options for the current crop, but it does indicatepotential future problems and suggests the diseaseresistance that must be considered in seed selection.Severe leaf blights may increase the risk of stalk rotslater in the season. If stalk rots do develop, then theaffected fields should be harvested as early as possible.

10. Soil Testing: Lime, Phosphorus, andPotassium ManagementSoil Testing

Soil testing is the key to any sound fertility program.Usually only phosphorus (P), potassium (K) and pHare tested in Indiana soils. Additional nutrients mayrequire evaluation if visible symptoms or decreasedyields are noted. For P and K, most Cornbeltrecommendations are based on soil tests calibrated toa depth of six to eight inches. Research from Indianaand the Midwest shows no reason for altering the totalamounts of nutrients needed for no-till. As explained

below, it may require testing at two different depthsand adding these together because of a concentrationof nutrients at the surface.

Stratification of P and K in the top few inches ofthe soil’s surface should not be a concern except underdrought conditions. Under normal conditions, thelargest percentage of root growth in no-till corn is foundin the top three inches of the soil early in the season.This is also where the highest concentrations of P andK are located. In drought conditions, the corn rootsnear the surface die and other roots expand deeper intothe soil where there is moisture. The roots that aredeeper in the soil are outside the zone with the highestamounts of P and K.

Alternative sampling methods for P and K areneeded to address the stratification of fertilizer. Take asample for the upper four inches and a sample for thelower four inches of the old plow layer. Averaging thetwo samples and comparing the result with therecommended amount for the full eight inches is usedto make recommendations. If the lower four inchesshows very low levels of P and/or K, the use of deeperfertility placement techniques and/or minimal tillageto mix fertilizers into that zone may be needed.

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For pH the major alternative in testing is examiningpH levels in the upper two inches of the soil. The useof certain nitrogen fertilizers, such as urea or UAN onthe surface quickly lowers the soil pH levels in the uppertwo inches. Testing of the upper two inches will pointout low pH levels. These must be corrected to maintainplant growth and also to insure that herbicideeffectiveness is not diminished.

LimingApplication of lime in no-till fields reflects the fact

that lime is relatively immobile in the soil. Unlesssomehow incorporated or deep-placed, the effects oflime will mainly be in the top four inches of the soil.There is no opportunity to incorporate lime in no-till.It is recommended that lime should be applied at one-half the rate, twice as often, than would be applied on afield with full width tillage of the same pH. The pHlevels should be adjusted to desired levels prior to theadoption of a no-till system if at all possible.

Phosphorus and Potassium ManagementIf possible, the soil fertility levels should be properly

adjusted before conversion to no-till. By incorporatingadequate to high fertility levels for both P and K to thefull depth of eight inches, a reserve of these nutrientsis established. In drier years, corn roots will make useof these nutrients lower in the topsoil. If a no-till systemis already in effect, the use of alternative placementmethods, such as deep banding or deep strip tillage,may help to provide P and K at deeper levels.

11. Control Traffic to PreventUnnecessary Soil Compaction

Soil physical properties can be improved by theadoption of no-till. Research has shown that withouttraffic, soils can develop more pore space and moreimportantly increased permeability. These benefits,however, do not occur where tire tracks are present.One pass under adverse conditions can compact thesoil and undo improvements in physical properties.

The best way to avoid this is to not create the trackin the first place. It is critical to analyze the trafficpatterns that have developed in crop production. Withinpractical limitations, it is important to attempt to controlspring trips because they are normally done underconditions that lead to the greatest potential forcompaction. Trips with heavy loads must also beconsidered, particularly grain carts in the fall. Theremay be reasons of efficiency that require a particularpass, but frequently there is also a hidden future costthat must be paid later.

No-till fields have excellent bearing capacity withvery few visible tracks. This can easily lull one intothinking that no damage has occurred. Unfortunately,this is not always the case. No one answer fits everyoperation. Many factors must be considered. If trafficcan be reasonably controlled then this is the best courseof action for the long term.

12. Seek Advice from Successful No-Tillers

No-till practices are constantly evolving. It isimportant to visit with farmers, dealers,conservationists, Extension personnel, and othersinvolved in no-till. More than likely, others have facedthe problems that you are experiencing. Ask questionsand get the thoughts and opinions from people whosejudgment you respect. Have them tell you abouttechniques that have worked for them or for others.Keep in mind that no-till requires a higher level ofmanagement than full width tillage, but that it also offersmore rewards for success. Every year presents a newset of experiences and results to compare. The resultsyour neighbors and others have discovered in yourcommunity could be very helpful in resolving problems.One size does not fit all in no-till, but experience hasshown that there is a way to make it work on a widevariety of Indiana soil conditions.

11

Photos courtesy of USDA Natural Resources Conservation Service.

The information given herein is supplied with the understanding that nodiscrimination is intended and no endorsement by the Purdue University

Cooperative Extension Service is implied.

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It is the policy of the Purdue University Cooperative Extension Service, David C. Petritz, Director,that all persons shall have equal opportunity and access to the programs and facilities withoutregard to race, color, sex, religion, national origin, age, marital status, parental status, sexual

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