An Overview of Boron Fertility in Prairie Soils and Canola Response to Fertilization.
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1 An Overview of Boron Fertility in Pririe Soils nd Cnol Response to Fertiliztion. Nobur Rhmn nd Jeff Schoenu Deprtment of Soil Science, U of S Mrch 6, 2017
2 Justifiction Boron (B) is rther unique s only slight chnges in B concentrtion in soil solution re ssocited with yield impeding deficiency or toxic effects in plnts Need to consider how soil, crop nd mngement fctors ffect soil B sttus nd likelihood of response to dded B fertilizer. (Hvlin et l., 1999)
3 Justifiction Boron deficiency issues in priries: Site specific: ptchy distribution -sptil vribility of soil properties (Rz et l., Krmnos et l., 2003)
4 Justifiction Boron deficiency issues in priries: Crop specific: Cnol identified s most susceptible smll grin crop
5 Justifiction Inconsistent yield response to fertiliztion reported - Uncertinty bout soil test criticl levels Soil properties my control fte nd efficcy - Trnsformtion nd complextion - Redistribution to unvilble pools (Krmnos nd Goh. 2001, Krmnos et l., 2003)
6 Reserch questions? Which soil properties re contributing to deficiency? Wht is the response of cnol to B fertiliztion?
7 Objectives To determine vilble B in pririe soils, nd reltionship with soil properties To evlute the impct of B fertiliztion on yield of cnol vrieties grown in contrsting pririe soils
8 Soil Collection
9 Methods nd Mterils Collection of 47 field soils to represent rnge of pririe soils with contrsting soil properties: Snd: 6% to 94% ph: 5.0 to 7.8, OC: 0.9% to 43% Assessment of soil extrctble nd supply rte of B nd reltionship to soil properties - hot wter extrction for vilble B, nd PRS resin membrne extrction for supply rte - Hot wter B: 0.4 to 3.6 mg B kg -1 PRS B supply rte: 0.02 to 0.3 ug/10 cm 2 /24hr Response of cnol to B fertiliztion in selected soils
10 Results Brown soil zone (7 soils) HWSB = Hot Wter Soluble B; SRB= Supply Rte of B Orgnic C nd extrctble B most closely relted
11 Drk Brown soil zone (7 soils) HWSB = Hot Wter Soluble B; SRB= Supply Rte of B Snd content negtively relted to extrctble B High snd content contributes to high supply rte of B
12 Blck soil zone (22 soils) HWSB = Hot Wter Soluble B; SRB= Supply Rte of B Extrctble B most positively relted to orgnic C
13 Gry soil zone (7 soils) HWSB = Hot Wter Soluble B; SRB= Supply Rte of B Orgnic C strong controller of extrctble B Snd contributes to higher supply rte of B
14 Pet soils (3 soils) HWSB = Hot Wter Soluble B; SRB= Supply Rte of B Most properties of the pet soil hd no reltion to vilble B (only 3 soils); High crbonte = low supply rte of B
15 Summry Orgnic C strongly contributes to extrctble B. Snd content is inversely relted to extrctble B, but directly relted to supply rte of B (diffusion). In pety soils, high crbonte content my contribute to low B supply rte.
16 Cnol Response to Boron Fertiliztion
17 Soil Fctor Evlution: Five Contrsting Soils Whitewood Drk Gry Chernozem (Dnbury) Echo Brown Solodized Solonetz (Centrl Butte) Whitefox Drk Gry Chernozem (Nipwin) Sceptre Orthic Vertisol (Sceptre) Uklt Blck Chernozem (Alix, AB) All soils received bsl ppliction of N, P, K nd S
18 Tretments Methods nd Mterils T 1 : Control T 2 : Soil 1 kg B h -1 T 3 : Folir ppliction 1 (one 0.25 kg B h -1 T 4 : Folir ppliction 2 (two 0.25 kg B h -1
19 Results WHITEWOOD O.DGC (Dnbury, SK) B= 0.9 mg kg -1 ; ph=6.9; Snd=49%; OC=3.0% Control Soil Folir 1 Folir 2 Biomss yield (g pot -1 ) Grin Strw
20 WHITEWOOD O.DGC (Dnbury, SK) B= 0.9 mg kg -1 ; ph=6.9; Snd=49%; OC=3.0% Control Soil Folir 1 Folir 2
21 ECHO B.SS (Centrl Butte, SK): B= 1.5 mg kg -1 ; ph=6.5; Snd=44%; OC=2.0% Control Soil Folir 1 Folir 2 Biomss yield (g pot -1 ) Grin Strw
22 ECHO B.SS (Centrl Butte, SK): B= 1.5 mg kg -1 ; ph=6.5; Snd=44%; OC=2.0% Control Soil Folir 1 Folir 2
23 UKALTA series (Alix, AB) B= 0.9 mg kg -1 ; ph=5.5; Snd=81%; OC=2.6% Control Soil Folir 1 Folir 2 Biomss yield (g pot-1) Grin Strw
24 UKALTA series (Alix, AB) B= 0.9 mg kg -1 ; ph=5.5; Snd=81%; OC=2.6% Control Soil Folir 1 Folir 2
25 SCEPTRE O.V (Sceptre, SK) B= 1.1 mg kg -1 ; ph=7.6; Snd=7%; OC=1.7% Control Soil Folir 1 Folir 2 Biomss yield (g pot -1 ) Grin Strw
26 SCEPTRE O.V (Sceptre, SK) B= 1.1 mg kg -1 ; ph=7.6; Snd 7%; OC=1.7% Control Soil Folir 1 Folir 2
27 WHITEFOX O.DGC (Nipwin, SK) B= 0.45 mg kg -1 ; ph=5.0; Snd=57%; OC=2.2% Control Soil Folir 1 Folir 2 Biomss yield (g pot -1 ) b b Grin b Strw
28 WHITEFOX O.DGC (Nipwin, SK) B= 0.45 mg kg -1 ; ph=5.0; Snd=57%; OC=2.2% Control Soil Folir 1 Folir 2
29 WHITEFOX O.DGC (Nipwin, SK) B= 0.45 mg kg -1 ; ph=5.0; Snd=57%; OC=2.2% Control Soil Folir 1 Folir 2
30 Summry Of the five soils, cnol responded to B on one soil (Whitefox) extrctble B ws t mrginl level (HWSB = 0.45 mg kg -1 ) only soil ppliction ws effective.
31 Crop Fctor: Genotype evlution Control versus B fertiliztion tretments were tested on five different vrieties/mrket clsses of cnol on low extrctble B soil (Meot) Cnol vrieties (genotypes) V₁: InVigor LL 252 (B. npus) V₂: Roundup Redy VT 500G (B. npus) V₃: Andnte mustrd (Yellow; Sinpsis Alb) V₄: XCEED 8571 (B. junce) V₅: ACS-C7 (Polish; B. rp)
32 Results Meot O.BLC: B=0.6 mg kg -1 ; ph=6.7; Snd=89%; OC=1.7%
33 Summry No significnt yield response of ny cnol vrieties to B fertiliztion on low extrctble B Meot soil. High supply rte (0.12 ug/10 cm 2 /24hr) detected in this soil (corse texture).
34 Tke Home Messge In minerl soils, orgnic mtter hs strongest reltionship with soil test extrctble B. Texture nd ph hd more vrible influence. Soil B chemistry is complex! Yield response to boron fertiliztion my be expected in soils with HWSB vlue t criticl level (<0.35 mg B kg -1 ). Tking into considertion effects of soil properties on bility of B to move in soil lso seems importnt.
35 Next Steps To understnd biovilbility nd fte of pplied B in reltion to soil properties, rhizosphere modifiction nd plnt uptke Chemicl nd Spectroscopic Specition!
36 Acknowledgements Ryn Hngs nd Cory Ftteicher Tem Schoenu (Nutrient Mngement Lb Group) AAFC AgriInnovtion Progrm
37 References Hvlin, J.L., S.L. Tisdle, W.L. Nelson, nd J.D. Beton Soil fertility nd fertilizers: An introduction to nutrient mngement. 8 th edition. Prentice Hll, Upper Sddle River, NJ. Krmnos, R., nd T.B. Goh Are Present Soil Test Cu, B nd Zn Criteri for Whet, Cnol nd Bens, Respectively, Accurte? Mnitob Agronomists Conference. University of Mnitob. f/krmnos. Pdf Krmnos, R.E., T.B. Goh, nd T.A. Stonehouse Cnol response to boron in Cndin pririe soils. Cn. J. Plnt Sci. 83: Rz, M., A.R. Mermut, J.J. Schoenu, nd S.S. Mlhi Boron frctiontion in some Ssktchewn soils. Cn. J. Soil Sci. 82:
38 Thnk you?
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