Lucerne Update. Derrick Moot

Transcription

1 Lucerne Update Derrick Moot This work by Prof. Derrick Moot and the Lincoln University Dryland Pastures Research Team is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

2 High Data Integrity I Rigour On station experiments Models Simulations On-farm trials On-farm demonstrations Case studies Surveys SCIENCE Low Archives Personal opinion Stories Myths Legends NONSCIENCE Low Currency/Relevance High Bonoma 1985

3 Dryland pastures Soil water recharge most springs Low N fertilizer use High spring feed demand breeding systems Adaptable to climate variability future scenarios Sustainable financially, socially, environmentally Highly variable summer/autumn rainfall Lucerne where possible

4 Experiment site Rep 1 Rep 2 Rep 3 Photo: A Mills Lincoln University

5 Growth rates (2 year means) Growth rate (kg/ha/d) Dryland Just add water Just add Nitrogen Water + Nitrogen 6.3 t/ha 21.9 t/ha 9.8 t/ha 15.7 t/ha J A S O N D J F M A M J J Month Mills et al. 2006, 2009

6 Growth rates (2 year means) Growth rate (kg/ha/d) Dryland Just add Nitrogen 6.3 t/ha 15.7 t/ha J A S O N D J F M A M J J Month Mills et al. 2006, 2009

7 Soil moisture deficit 2003/04 Rainfall (mm) Deficit (mm) D+N D-N Total rain = 520 mm Thermal time ( Cd) Mills 2007

8 Photo: DJ Moot Lincoln University

9 Photo: DP Monks Lincoln University Nitrogen fixation kg N/t DM Lucas et al. 2010

10 Adapted from: 400 Plus. A guide to improved lamb growth Liveweight g (g/day) All dead and stem % stem or dead, little clover Good quality hay Bailage/silage Energy value of diet (MJ ME/kg DM) Average ryegrass clover growing pasture Mostly clover pasture Good quality lucerne Swedes & turnips Rape Pasja Ewe milk Poor hay

11 Lucerne Objectives Describe key establishment issues. Describe management to maximise production, quality and persistence. Answer any question

12 Resistance to Pests and Diseases Cultivar Dormancy BGA PA SAA BW SN PRR VW LD Grasslands Grasslands Grasslands P54Q53 P54V09 Runner Wairau WL 325HQ Kaituna Otaio Torlesse I I D D D D SD I R R HR MR - - S R BGA = Blue-green aphid PA = Pea aphid SAA = Spotted alfalfa aphid BW = Bacterial Wilt SN = Stem nematodeprr = Phytopthora root rot VW = Verticillium wilt LD = Leaf diseases D = Dormant HR = 50%+ resistant R = Resistant = (31-50%) SD = Semi-dormant MR = 16-30% S = Susceptible R R R MR HR - S R R R R MR R - S R R R R HR HR R S R R R - HR HR - S MR R R R HR HR S S R HR - S - MR S MR S -

13 Establishment Soils - deepest free draining soils - ph RG/Wc fertility Sowing kg/ha mm - peat inoculated 8-10 kg/ha - spring or autumn??? - cultivated/direct drilled (DAP)

14 Photo: David Hollander Lincoln University Lucerne root ~8 months after sowing > 1.5 m length

15 Pre-development - browntop - hieracium - sweet vernal - <5% legume Kearney et al. 2010

16 Lime and Fertiliser Application Lime 3-5 t/ha Fertiliser kg/ha Kearney et al. 2010

17 Kearney et al Soil test results (0.15 m) ph Olsen P (ug/ml) Potassium (QTU) Sulphur (ug/g) Aluminium (mg/kg) Pre-Development (2008) Hills Creek Huntleigh Styx Post-Development (2010) Hills Creek Huntleigh Styx

18 Kearney et al Autumn Spraying Timing is Critical Very important tool Glyphosate, granstar, penetrant Key Result Conserve soil moisture Kill mass root systems

19 2 nd Spray Spring Glyphosate, insecticide, penetrant Result from Autumn spray, photo taken 1 November 2010 Kearney et al Kearney et al. 2010

20 Kearney et al Drilling seed with fertiliser Direct drilling = seed + fertiliser

21 Browntop Agrostis capillaris stolons and rhizomes Autumn herbicide and burn

22 Photo: DJ Moot Lincoln University 3 cm of organic matter not soil

23 Photo: DJ Moot Lincoln University Ryecorn Secale cereal Break feed in winter/spring

24 Moot et al Sowing rate and date Established 2007 LU Templeton silt loam Coated Grasslands Kaituna lucerne. Four sowing dates 21 February, 2 March, 16 March and 30 March Four sowing rates Equivalent to bare 7, 10, 13 and 16 kg/ha

25 Moot et al Sown seed & plant population over time Seed or plants/m LSD Sowing rate of coated seed (kg/ha) Seed Feb-Mar 2007 Emerge Autumn 2007 Sep'07 Year 1 Aug'08 Year 2 Aug'09 Year 3 Aug'10 Year 4 Aug'11 Year 5 Aug'12 Year 6

26 Moot et al Annual yield in relation to sowing rate Annual DM yield (t/ha) Lucerne seed rate: kg/ha SEM Year 1 Year 2 Year 3 Year 4 Year 5 Stand age

27 Weed control Ensure adequate control of perennial weeds before sowing lucerne Triflurilan pre sowing note dry conditions Spinnaker and 2,4 DB post emergence - or graze at 15 cm if weeds are an issues. Fathen only lasts one year. Minimal winter weed control in Year 0.

28 Sown: February October Taproot mass Photo: E.I. Teixeira Lincoln University Sampled: June Sim 2014

29 Establishment Pre sowing fertility and weed control pre sowing Firm seed bed for accurate seed depth (1 cm) Spring sow October First crop cut December Graze earlier if weedy - then flowering Start rotational grazing in January cm Don t need 10% flowering Be patient!

30 Growth: is dry matter accumulation as a result of light interception and photosynthesis Development: is the age or maturity of the regrowth crop e.g. leaf appearance, flowering Growth and development are both influenced by environmental signals

31 The canopy: the energy capture device Photo: DJ Moot Lincoln University

32 Moot et al Vegetative growth 120 Jan Growth rate (kg DM/ha/d) July Spring Autumn Mean temperature ( o C) Feb

33 Experiment 2 flexible grazing 38 days resting 4 days grazing Photo: E.I. Teixeira Lincoln University 25 days resting 3 days grazing

34 Moot et al Partitioning to roots Tap root dry weight (t/ha) day 28-day A S O N D J F M A Month

35 Seasonal grazing management Spring 1 st rotation aided by root reserves to produce high quality vegetative forage. can graze before flowers appear (~1500 kg DM/ha) ideally ewes and lambs but Growing point at the top of the plant

36 Rotation 1 Pre-graze Plot 1 (21/9/07) 2.3 t DM/ha cm tall

37 Brown & Moot 2004 Metabolisable energy of lucerne 16 ME (MJ/kg DM) Leaves Stem Yield (t DM /ha)

38 Moot & Smith 2011 Practical Lucerne Management Guide MaxClover day rotation DM Yield (t/ha) Monthly rainfall (mm) 0 0 Jul07 Sep07 Nov07 Jan08 Mar08 May08 Jul08 Date

39 5 th September 2011 Cave, South Canterbury Photo: DJ Moot Lincoln University

40 Photo: H.E. Brown Lincoln University

41 Photo: H.E. Brown Lincoln University

42 Photo: H.E. Brown Lincoln University

43 Photo: H.E. Brown Lincoln University

44 Photo: Bonavaree, Marlborough Spring grazing

45 Seasonal grazing management Spring/summer (Nov-Jan) Priority is stock production (lamb/beef/deer) Graze 6-8 weeks solely on lucerne 5-6 paddock rotation stocked with one class of stock (7-10 days on) Allowance kg DM/hd/d increase later in season

46 High numbers for 7-10 days Photo: Bonavaree, Marlborough

47 Photo: Doug Avery Bonavaree, Marlborough Fibre and salt

48 Photo: Doug Avery, Bonavaree, Marlborough 6/10/2015 Pre graze mow

49 Seasonal grazing management Early autumn (Feb-April) terminal drought graze standing herbage allow 50% flowering long rotation (42 days) somewhere between Jan and end of May. build-up root reserves for spring growth and increase stand persistence

50 Autumn = flowering plants Rotation 4 Pre-graze Plot 6 (28/2/08) 2.0 t DM/ha produced in 51 d

51 Fertilizer Higher requirement from cutting than grazing 2% K = 20 kg/ha/t DM removed 50% K super = 80 kg/ha/t DM removed Or KCL = 40kg/ha/t DM removed + P and S from super

52 Photo: DJ Moot Lincoln University

53 Animal health Clostridial bacteria: vaccinate Cobalt: vitamin B12 injection Worm haven: Camping on small area river edge? Avoid flushing if: leaf spots or dull weather

54 Fields et al When is coumestrol high? Ranges from 0 to 600 mg/kg. >25 mg/kg sufficient to reduce ewe ovulation rate. Produced in response to fungal pathogens.

55 Two weeks off lucerne Fields et al. 2017

56 Animal health Redgut: problem on high quality feeds fibre Bloat: cattle more than sheep capsules Na def. (0.03%): salt licks/fence-line weeds/pasture Require 0.11% Na - sheep/beef/dairy

57 Conclusions Start spring grazing at cm Ewes and lambs at about two weeks Quality maximized at 30 cm Leaf and soft stem are highest quality Ignore residual Drop out paddocks if recovery is rapid Allow a period of extended growth in autumn Wet autumn flush on grass

58 Case study Bonavaree farm, Marlborough Over grazed high erosion risk Financially no return Dryland lucerne conversion

59 Moot et al Spring WUE Accumulated DM (t/ha) Lucerne Grass/clover (+N) Grass only 28 kg DM/ha/mm 20 kg DM/ha/mm 13 kg DM/ha/mm Water use (mm)

60 Bonavaree 14/8/2017 Photo: DJ Moot Lincoln University

61 Photo: Doug Avery, Bonavaree, Marlborough

62 T Ryan-Salter unpublished Relationship between LWt production and feed consumed 1200 Luc Liveweight (kg LWt/ha) LWt = 131 g LWt/kg DM consumed Feed consumed (kg DM/ha)

63 Bonavaree production change over 10 years Change Land area (ha) % Sheep numbers % Lambing (%) % Lamb weights (kg) % Lamb sold (kg) % Wool (kg) % Sheep:cattle 70:30 50:50 Gross trading profit (ha) $317 $ % Moot & Avery 2013

64

65 Pathway to change Implement a new technology (e.g. lucerne grazing) Output Plateau = system optimised Incremental change e. g. cultivar, fertilizer, Time

66 Pathway of change Risk of reversion Implement a new technology (e.g. lucerne grazing) lucerne grazing working Output Plateau = system optimised Transformational Change Incremental change Negative output Time

67 Pathway to change Risk of reversion Implement a new technology e.g. lucerne grazing Output Plateau = system optimised Reduce time to optimisation Transformational Change Incremental change Negative outcome Science/Agribusiness/Education. Provides technology, upskilling and support for major change Time

68 Pathway to change Irrigation? Irrigations? Implement a new technology e.g. water, fert. Grazing mgmt.) Implementation period Next? Output Plateau = system optimised Reduced time to system optimisation Transformational Change Incremental change Slack created in the system Agribusiness/Education mediated. Provides technology, upskilling and support for major change Time

69 Moot et al A story of change Dave (Gundy) & Lisa Anderson

70 Moot et al Old System Set-stocked Constant grass chasing Hill country in decline 100 day supplement winter feeding Peak feed demand and supply misaligned

71 Landscape farming Bog Roy Station Photo: DJ Moot Lincoln University

72 Getting Started Moot et al. 2018

73 Landscape farming Moot et al. 2018

74 Measuring, Monitoring & Analysing Moot et al. 2018

75 Moot et al Ewe flock performance kg lamb weaned = number of lambs x weaning weight Key Drivers are: Ewe Performance Scanning % Lamb wastage % Lambing % Lamb Performance Lamb growth rate Lamb weaning weight

76 Moot et al Change in LWt produced at Bog Roy 160 Lamb weaned (t) Year

77 Moot et al Change in ewes mated at Bog Roy Number of ewes mated

78 Moot et al Change in LWt produced at Bog Roy Lamb weaned (t) Year No. ewes mated

79 MA + 2T Lambing % Moot et al. 2018

80 MA + 2T Lamb Wastage % Moot et al. 2018

81 Total Annual DM yields Bog Roy Total annual yield (t/ha) Bog Roy Hill (OSTD sunny face) Rough Gully (dryland Luc/CF) Wheatgrass (dryland Luc) Top Davids (Luc initially Irr then dryland)) 2011/ / / / / / /18 Year

82 Transformational change at Bog Roy Change to lucerne grazing priority Increased per head performance of ewes Increased dry matter grown with new lucerne Less winter feed made Weaned lambs sold at heavier weights Complicated by water/tenure review/succession We listened to advice and acted on it

83 MaxLucerne Ashley Dene C7 (W) 8.0 ha C7 (E) 4.0 ha N Not to scale 1 Power Pylon Gate

84 MaxLucerne Ashley Dene Accumulated DM production Total accumulated yield (t DM/ha) Luc Luc/Brome Luc/CF 0 Jul12 Jan13 Jul13 Jan14 Jul14 Jan15 Jul15 Jan16 Jul16 Jan17 Date

85 Rainfall at Ashley Dene Monthly rainfall (mm) / mm 2013/ mm 2014/ mm 2015/ mm 2016/ mm (Jul - Feb) LTM ( ) 604 mm 0 Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun

86 MaxLucerne Ashley Dene Net LWt Production by class 2012/13 Net LWt produced (kg/ha) a b Luc Luc/Brome Luc/CF Pasture a Lactating ewes Lambs at foot Weaned lambs Hoggets

87 MaxLucerne Ashley Dene Net LWt Production by class 2013/14 Net LWt produced (kg/ha) a a a Lactating ewes Lambs at foot Weaned lambs Hoggets Dry ewes Luc Luc/Brome Luc/CF Pasture

88 MaxLucerne Ashley Dene Net LWt Production by class 2014/15 Net LWt produced (kg/ha) a a Luc Luc/Brome Luc/CF Pasture a Lactating ewes Lambs at foot Weaned lambs Hoggets

89 MaxLucerne Ashley Dene Net LWt Production by class 2015/16 Net LWt produced (kg/ha) a b b Lactating ewes Lambs at foot Weaned lambs Hoggets Luc Luc/Brome Luc/CF Pasture

90 MaxLucerne Ashley Dene Net LWt Production by class 2016/17 (Terminated Feb 2017) Net LWt produced (kg/ha) a b Luc Luc/Brome Luc/CF Pasture b Lactating ewes Lambs at foot Weaned lambs

91 LWt gain of lactating ewes in spring Seasonal weighted LWt gain (g/hd/d) / / / / /17 Luc Luc/Brome Luc/CF

92 LWt gain of suckling twin lambs in spring Seasonal weighted LWt gain (g/hd/d) / / / / /17 Luc Luc/Brome Luc/CF

93 LWt gain of weaned lambs in summer Seasonal weighted LWt gain (g/hd/d) / / / / /17 Luc Luc/Brome Luc/CF

94 LWt gain of hoggets in autumn Seasonal weighted LWt gain (g/hd/d) / / / / /17 Luc Luc/Brome Luc/CF

95 MaxLucerne Ashley Dene Composition of lucerne monocultures Fractional composition Luc Weed Dead 0.0 Jul12 Jan13 Jul13 Jan14 Jul14 Jan15 Jul15 Jan16 Jul16 Jan17 Jul17 Date

96 Fractional composition MaxLucerne Ashley Dene Composition of Luc/Brome mixes Jul12 Jan13 Jul13 Jan14 Jul14 Jan15 Jul15 Jan16 Jul16 Jan17 Jul17 Date Luc Brome Weed Dead

97 MaxLucerne Ashley Dene Composition of Luc/Cocksfoot mixes Fractional composition Jul12 Jan13 Jul13 Jan14 Jul14 Jan15 Jul15 Jan16 Jul16 Jan17 Jul17 Date Luc Cocksfoot Weeds Dead

98 Lamb LWG vs ewe LWG (g/head/day) - by pasture type

99 Fields et al Expected number of fetuses per ewe as live weight increases

100 Conclusions Lucerne is the main legume for dryland Lucerne grazing works ewes! Lucerne grass where you need it Ewe condition improves pre weaning Transformational change is possible If you don t like shifting stock don t do it

101 Where to find us: Website: Blog: YouTube:

102 References Bonoma, T. V Case research in Marketing: Opportunities, problems and a process. Journal of Marketing Research, 22, Brown, H. E. and Moot, D. J Quality and quantity of chicory, lucerne and red clover production under irrigation. Proceedings of the New Zealand Grassland Association, 66, Fields, R., Moot, D. J. and Barrell, G Identifying oestrogenic lucerne crops and premating ewe management. Available from: 4 pp. Kearney, J. K., Moot, D. J. and Pollock, K. M On-farm comparison of pasture production in relation to rainfall in Central Otago. Proceedings of the New Zealand Grassland Association, 72, Kerr, P plus - a guide to improved lamb growth. New Zealand Sheep Council in association with WoolPro and Meat New Zealand. 107 pp. Lucas, R. J., Smith, M. C., Jarvis, P., Mills, A. and Moot, D. J Nitrogen fixation by subterranean and white clovers in dryland cocksfoot pastures. Proceedings of the New Zealand Grassland Association, 72, Mills, A Understanding constraints to cocksfoot (Dactylis glomerata L.) based pasture production, PhD thesis, Lincoln University, Canterbury. Online access: pp. Mills, A., Moot, D. J. and Jamieson, P. D Quantifying the effect of nitrogen of productivity of cocksfoot (Dactylis glomerata L.) pastures. European Journal of Agronomy, 30, Mills, A., Moot, D. J. and McKenzie, B. A Cocksfoot pasture production in relation to environmental variables. Proceedings of the New Zealand Grassland Association, 68, Moot, D. J. and Avery, D Sustainable intensification of livestock grazing systems in low rainfall regions of New Zealand. First International Conference on Global Food Security, O3.O3 (4 pgs). Moot, D. J., Brown, H. E., Pollock, K. and Mills, A Yield and water use of temperate pastures in summer dry environments. Proceedings of the New Zealand Grassland Association, 70, Moot, D. J., Brown, H. E., Teixeira, E. I. and Pollock, K. M Crop growth and development affect seasonal priorities for lucerne management. In: D. J. Moot (ed). Legumes for Dryland Pastures Proceedings of a New Zealand Grassland Association Inc Symposium held at Lincoln University, November, Christchurch: New Zealand Grassland Association, Moot, D. J., Pollock, K. M. and Lewis, B Plant population, yield and water use of lucerne sown in autumn at four sowing rates. Proceedings of the New Zealand Grassland Association, 74, Moot, D.J., Mills, A., Smith, M., Anderson, D., Anderson, L Summary of liveweight gains and rotational grazing methods used for sheep grazing alfalfa in New Zealand. In: 2 nd World Alfalfa Congress, November 2018, Córdoba, Argentina. Submitted. Moot, D. J. and Smith, M. Practical Lucerne Management Guide. Date Accessed.