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The Importance of Nitrogen Stabilization

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The full proceedings paper is at: http://www.extension.org/72751

This session will highlight the importance of nitrification inhibitors and how they help delay the conversion of the ammonium form of nitrogen into the nitrate form which then can lead to leaching and denitrification. By using a nitorgen stabilizer, the plant has access to the ammonium form of nitrogen for a longer period of time in the root zone, where it needs it the most.

Publié dans : Formation
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The Importance of Nitrogen Stabilization

  1. 1. j. _ vl , ’. - -1" I . . .,‘: _i-IE iMi= eR ANCEXOF usiNqA NlT. RO‘G‘E'N IAaii_. izE - ; V, - A '. -0,, / . / .r. i. . . f, .' 9 I y _ ‘ _‘ y Ki . _ ‘ 5 . ' . . '1 ‘ . . . / ' ' ' " ' » . l i. . . l ' Dow Agrosciences Solution: for 21.. cm. .~. .._. ,r World
  2. 2. Table of Contents - An essential nutrient for plants - Nitrogen forms and sources - Processes in the nitrogen cycle - lnstinctiand N-Servetnitrogen stabilizers Dow Agrosclcncu Tiaaemans «Tn: Dow chemical company ita product is legislated tor sale or use in yo (‘noun or an aililiam company or Doui Instinct and NSQNQ are n Ill same. no not tall-apply anhydrous ammonia soim oniignuny is at regi in ill: some to: sale or use in all states. comm rouisiau pesiiciuie atom agency to uieoennine slain otlllinois. may: read and folloiulanel directions. 021112 flgiosciences Llc
  3. 3. AN ESSENTIAL NUTRIENT FOR PLANTS '1-I’I'l: l2>l(o¥”1-! I:l| i-in):
  4. 4. Ammonium Nutrition NH4+ VS. N03‘ ' - Corn plants absorb both ammonium (NH4+) and nitrate (N05) nitrogen - Scientists have shown that NH4+ is crucial for early growth - A combination of NH4+ and N03" improves overall plant growth - Once in the plant, N03‘ is ultimately converted to NH4+, which is an energy—consuming process - The stabilizer keeps nitrogen in the ammonium form longer, providing more efficient early growth of the corn plant (Q DowA¢roSclonou Tiaaeman: ofTne Dow cnemical company (‘noun or an amiaoea company or now Instinct and Nsenie are not regimieo for sale or use in all staoes. comacl youvstaoe peslicioe atoiy agency to oemimine ila product is registered tor sale or use in your sme. Do not lallapply annyarous ammonia soulli omignuny is in the sin of Illinois. may: read and follolulaoel directions. -02012 Agrosciences Llc
  5. 5. Ammonium and Nitrate Ion Mobility E — - Ammonium (NH4*) ions — Positively charged — Attracted to negatively charged soil colloids — Relatively immobile in soil - Nitrate (NO3‘) ions — Negatively charged — Repelled by negatively charged soil colloids — Movethroughthe soil in all directions Dow Agroscloneu I 5 Trademark olTne Dow chemical company (‘noun or an allliaoed company or Door Instinct and Nserue are not registered ror sale or use in all states. contact your shoe pesticide arory agency to detennine in product is regisliered for sale or use in your slarie. Do not fallapply anhydrous ammonia solllll ofllighoray 15 in llle sme o-I Illinois. Nrrnys read and iollourlahel directions. M012 Agrosciences Llc
  6. 6. The ProperAmount of im [[0-‘l [K514 vi, Nitrogen is Important 2 _ E1L‘I. ‘.l. Nitrogen deficiency can cause: Excess nitrogen can cause: All Increase "73 An increase in: Stalk lodging iv Stalk lodging Disease incidence 3* DiS€_8S€ IDCICIGHCG Nitrate leaching A deereeee "75 A decrease in: Nutrient uptake 2» Nutrient uptake Yields Iv Yields Profits 3’ Pleflte - : r-if: > DowA9roSclences Tiademans orThe Dow chemical company (‘noun or an alliliaoed company or Doui instinct and Nserve are not regishered for sale or use in all stages. contact yoursraoe pesticide regulatory agency to deoennine iraproducl is registered ror sale or use in your same. no notlhll-apply anhydrous ammonia soulri onlighuny rs inllle slate 0HIIilIoIS. NlIlySl! il1 and lolloiulahel directions. @2012 Dow Pgiosciences Llc
  7. 7. Nitrogen Deficiency m — Yellowing of the lower leaves starting at the leaf tips and progressing toward Yellowing of the lower leaves basal portion of the leaf along the commonly referred to as “firing" midrib in a V—shaped pattern ' ~ Dovirlgrosclcnou I :2: Tiademanr or‘l'he Dow chemical company (‘Dow or an aillliaoed company or Doui Instinct and Néerue are not regishered for sale or use in all states. contact your state pesticide regulatory agency to dehehnine ilaproducl is regisliered ror sale or use in your sale. no notrall-apply anhydrous ammonia south oflrighuny rs inllle slate orlllinois. Nunys read and follolulaoel directions. -$2012 Dow flgrosciences Llc
  8. 8. Nitrogen Management Today l'gAly. :t1fiAA-. yi. .". Sm : "‘. "'r. ’r"r ‘T’ Ei1EE’. Z""_: Nitrogen use rates are closely scrutinized Universityrecommendations are evolving Nitrogen economics are changing _ 7 ! ryr’ ‘ I. -F _ _ V Environmental influences " ; ___. ;‘'; I_'_-‘ J} L . ..:1r. :- Near future includes NUE-optimized hybrids , . (nitrogen utilization efficiency) - : l0£ - DowAgroSclences Tiademarlr or‘l'he Dow chemical company (‘noun or an atllliated company or Dour Instinct and Nserue are not registered for sale or use in all states. contact your state pesticide regulatory agency to determine ilaprodua is registered ror sale or use in your sate. Do notlall-apply anhydrous ammonia soulh ofllighuny IS inllle sate oflllihois. Always read and lollowlaoel directions. 02012 Dow flgmsciences Llc
  9. 9. PROCESSES IN THE NITROGEN CYCLE -i-l'cn: lsi«>1-! l:i-i-r= i=
  10. 10. Nitrogen Cycle riiirugarr : ,r ; l 111151111311 Dow Agrosctoncu Trademark «The Dow chemical company (‘noun or an athiiated company or Doru Instinct and Nserue are not registered for sale or use in all states. contact your state pesticide regulatory agency to determine irapiodun is registered for sale or use in your state. Do notlall-apply anhydrous ammonia south ofltighuny IS ihtlle sate oflllinois. Always read and lollowlatel directions. 02012 Dow Nyrosciences LLC JI-I U 3], , U JI 1J«JlJi'1'riilv; =_iIJ. IJir J '2
  11. 11. Nitrogen Loss Pathways instinct 2 % - Primary nitrogen loss in agriculture is through: > Nitrification of NH4* to NO-5, which is then exposed to loss through leaching or denitrification = more than 70 percent of total nitrogen loss > Volatilization of NH4* from urea, manure or UAN left exposed on the soil surface for extended periods - Many variables (pH, soil moisture, temperature, etc. ) affect the rate of Volatilization, leaching and denitrification ® DowA¢roSr: lonou Trademarl: orThe Dow chemical company (‘noun or an allliated company or Doul Instinct and Nsenie are not registered ror sale or use in all slatesconlact yourstate pesticide arory agency to detenhine ilaproduct is registered tor sale or use in your sfite. Do notllallapply anhydrous ammonia south ofllighuay IS inttle state orlllinois. Nunys read and follourlatel directions. dielltz Agrosciences Llc
  12. 12. Nitrification is Temperatu re-sensitive When soil air and soil pH are suitable for microorganisms, temperatures in the range of 60‘ Fto 90 Fwill complete the process in generally two to three weeks. At soil temperatures between 40 F and SOP, it will take morethan 14 weeksto completethe process. ~ : l-1;: ~ DowAgro$clences °Trademar1< of The Doou(]1erricalOomyian3t['Dood’] or an affiliatedcnrmanyal Dtlllll ‘°° " 75 F 90 80 70 50 40 30 ‘>5 of Conversion to Nitrate 20 - 52F 47F ', 42F 37F Weeks Source: Fluni Jourmlvol. J, No. 2, Issue '13. pq. 17. Official Journal of the Fluid Fortrlra: -r Foundation. Dennis T. Amrv. Drrc-clor of Cc-ntnr for Global Food Issues for the Hudson lnstrtuto of lndi. rn apolls, IN.
  13. 13. Nitrification of Fall-applied Anhydrous Nitrification — with and without stabilization FallApplication 10/23/97 Applied at 55° F soil temperature Temperatures were warmer than normal in the winter of 1997-98. Soils froze for only about a week in late—December and tile lines were running in late—Januar'y following rains. it 3: 2 U! II 2 ‘U .2 E. Q. < H- O 33 R. Hoeft, University of Illinois, Urbana. lll. Trademarlr orThe Dow chemical company (‘Doom or an arllliated company or Dour Instinct and Nerve are not registered for sale or use in all states. contact your state pesticide regulatory agency to detehnine ira product is registered ror sale or use in your sate. Do notlall-apply anhydrous ammonia south otllighuny IS inttle state oflllinois. Nulays read and folloiulatel directions. -oeoiz Dow Pgrosciences Llc
  14. 14. Effect of Instinct or N-Serve on Availability of N Nitrogen-com "A or iolal uptake and applied nrrrooen Ve‘m_, ,_. y _vs Jvrz vrg R1 R2 R3 R4 R5 R6 °'I'. e'_". ’”’3° . _. 49 .50. 3° _ _ .190 . _.‘?9.. . May June July August September I Gram Cl Huslrs. lower ears I Leaf sheaths I Cob. shank. srllrs El Stalk, tassel I mves -9- stabilized -u- Unstabriized @ Dollrrlgrosolonooa Trademailr orThe Dow chemical company ['D-ourj or an alhliated company of Dow Instinct and llserrle are not registered ror sale or use in all states. contact your state pesticide regulatory agency to detehhine in product is registered for sale or use in your sum. Do not hllapply anhydrous allrmorria soulll olllighrrray Is in the state of Illinois. riurnys read and iollourlatel directions. 02012 Doul Jlgrosciehces Llc I 48
  15. 15. Factors Affecting Denitrification instinct N—Serve % 2 - When soils become waterlogged, oxygen is excluded and anaerobic decomposition of nitrate occurs - Heavily compacted soils can contribute to higher rates of denitrification - Ponding of water is not necessary for soil to be waterlogged Dollrlgrosolonou i -as Trademailr orThe Dow chemical company ['D-ourj or an alhliated company of Dow Instinct and llserrle are not registered ror sale or use in all states. contact your state pesticide atory agency to detehhine in product is registered for sale or use in your sum. Do not hllapply anhydrous allrmorria soulll olllighrrray Is in the state of Illinois. riurnys read and iollourlatel directions. 02012 Jlgrosciehces Llc
  16. 16. When and How Does Nitrogen Loss Occur? - Most nitrogen loss (from unstabilized NH4) occurs in May and June when com is small and rainfall is greater - Most yield reductions come from one or two nitrogen loss events: - 10 percent lost in three days of saturated soils 10 percentlost each additional day that soils stay saturated (_i. e.. 20+ percent lost in four days of wetsoilsl l v r v o Leaching Heavy soils: Lose N03 nitrogen with tile-line flow (_1 5 to 50 lb. /year) Sandy soils: Each inch ofrain moves N03, nitrogen approximately 1 foot DowA¢roSr: Ionou I 51 Trademarlr orThe Dow chemical company (‘Donn or an allliated company or now Instinct and Nerve are not registered lor sale or use in all slatesconlact yourstate pesticide atory agency to detenhine ilaproduct is registered for sale or use in your sfite. Do notllallapply anhydrous ammonia south ofllighuay IS inttle state orlllinois. Nunys read and follourlatel directions. dielltz Agrosciences Llc
  17. 17. |NSTINCT® AND N-SERVE® NITROGEN STABILIZERS T1. _ — -i-r'r'n: lsr«om-! l:iri-r= r=
  18. 18. Nitrification: A Conversion Process of Nitrogen Fertilizer NH4* Ammonium Dow Agroscloneu Trademarli orThe Dow chemical com ira produa is registered for sale or use pahy Ill yo Nitrobacter Nitrosomonas Bacteria Bacteria G N03- Nitrate (‘Doom or an alllliated company or Dow Instinct and Néeroe are not registered for sale or use in all states. contact your state pesticide atory agency to detehnine ur sate. Do nottall-apply anhydrous ammonia south ofllighony 15 inttle slate orlllinois. Alunys read and lollowlatel directions. 02012 flgrosciences Llc
  19. 19. Nitrification: A Conversion Process of Nitrogen Fertilizer NH4* Nitrosomonasgég Bacteria Ca. -z; {‘>§r N Ammonium Dow Agroscloneu Trademarli orThe Dow chemical com ira produa is registered for sale or use pahy Ill yo (‘Doom or an alllliated company or Dow Instinct and Néeroe are n ur sate. Do not tall-apply anhydrous ammonia south ofllighony 15 ot regi in the Nitrl Nitrobacter Bacteria _Ct)2' % stered for sale or use in all states. contact your state pesticide ato slate orlllinois. Alunys read and lollowlatel directions. 02012 fig N03‘ Nitrate gency to detehnine 'ences Llc
  20. 20. Technical Benefits of lnstincteand N-Serve®Nitrogen Stabilizers Instinct j - Inhibit N/ trosomonas bacteria, which initiate the conversion from ammonium nitrogen (N Hf) to nitrate nitrogen (N05) - Keep ammonium nitrogen in the ammonium form longer, preventing leaching and denitrification - The active provides growers with the same technical benefits it has provided for 35+ years ® Dow Agrosclonou Trademani orThe Dow chemical company in yo (‘Doom or an alllliated company ornow Instinct and Nseroe are not registered for sale or use in all states. contact yourstate pesticide atory agency to detenhine ila product is registered for sale or use ur sfite. Do not tallapply anhydrous ammonia south ofllighlrny IS in the state otlllinois. Nunys read and rolloorlatel directions. rt2012 Agrosciences Llc
  21. 21. Meta-analysis Approach to Nitrogen Stabilization — - In more than 75 percent of individual com parisons, use of N-Servef‘ nitrogen stabilizer increased soil nitrogen retention and, thus, maximized yield potential, and decreased nitrogen leaching and volatilization. DowA¢roSclonou I so Tiademanr olTne Dow chemical company (‘Doom or an allliated company or now instinct and llsehle are not registered lor sale or use in all states. contact your state pesticide atory agency to detenhine ila product is registered for sale or use in your sfite. Do not Iallapply anhydrous ammonia solllll onlighoray is in the state of Illinois. rilirnys read and ‘lollowlatel directions. di2012 Agrosciences Llc
  22. 22. Proven Effective W ‘ - Across diverse environments. many years and cultural practices, N—Serve‘i' nitrogen stabilizer has delivered (on average): > Corn Yield Optimization - 7 percent advantage with fall-applied nitrogen - 5 percent advantage with spring-applied nitrogen > Environmental Benefits - Soil nitrogen retention increased by 28 percent - Nitrogen leaching decreased by nearly 16 percent - Greenhouse gas emissions decreased by 48 percent ® DowA¢roScloneu r 57 Tiademarlr olThe Dow chemical company (‘Doom or an allliated company or now Instinct and Nsenle are not registered ror sale or use in all slates. con1act yourstate pesticide atory agency to detenhine ila product is registered for sale or use in your sfite. Do not rallapply anhydrous ammonia solltll ofllighony IS in the state 0fII| IlIlIIS. NlIB1S read and ‘rolloorlatel directions. c2012 Agrosciences Llc

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