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Manure management facilities on farms and their relevance to efficient nutrient use. Bernard Hyde & Owen, T. Carton Teagasc, Johnstown Castle The Fertilizer Association of Ireland Winter Scientific Meeting 25 th November 2005 Faculty of Agriculture, University College Dublin. Manure.

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manure management facilities on farms and their relevance to efficient nutrient use

Manure management facilities on farms and their relevance to efficient nutrient use

Bernard Hyde & Owen, T. Carton

Teagasc, Johnstown Castle

The Fertilizer Association of Ireland

Winter Scientific Meeting 25th November 2005

Faculty of Agriculture, University College Dublin

manure
Manure
  • 2003 - 6.3 million animals = 37 million tonnes
  • Slurry = 29.3 million tonnes
  • Solid = 7.7 million tonnes
  • Dairy cows ~ 28% of slurry & ~ 7% of solid manure
topic facilities utilisation
Topic – facilities & utilisation
  • Manure management facilities
    • Storage
    • Spreading date
    • Spreading method
  • Nutrient efficiency
    • Manure type
    • N, P & K
  • Cost vs. nutrient value
requirements for efficient nutrient use
Requirements for efficient nutrient use
  • NMP
  • Changing slurry spreading date
  • Changing slurry spreading method
  • Storage vs. spreading date?
  • Cost benefit?
slide6
NMP
  • Soil
  • Manure
  • Crop demand
  • Code of Practice
    • Rate
    • Date
    • Method
current utilisation
Current utilisation?
  • Indicators?
  • FUS (2002 & 2005)
    • Indications of N, P & K overuse
      • Fert. input = Fert. required
      • Slurry?
  • Farm Facilities Survey (2003) – crop & timing of application
topic facilities utilisation8
Topic – facilities & utilisation
  • Manure management facilities
    • Storage
    • Spreading date
    • Spreading method
storage
Storage
  • Spreading date – 4% in winter
  • Estimated storage deficits – national basis
    • 21% for 16 week storage
    • 31% for 22 week storage
  • Action Programme
    • Ban on winter spreading
    • Required minimum slurry storage
  • Reconcile deficit and date?
landspreading n efficiency
Landspreading - N efficiency
  • N efficiency – key issue
  • Spreading date & rate
    • Soil/weather conditions
  • Contamination
    • Spreading date
  • Spreader availability
    • Farmer owned
    • Contractor
slide19
Slurry spreading opportunitiesDistribution of the number of days on which soils have a soil moisture deficit in excess of 10 mm. (Schulte et al., in press)
silage contamination
Silage contamination ?
  • End March/early April
  • Crop – too far advanced
  • Risk of poor fermentation
spreader availability
Spreader availability
  • C.S.O. – Census of Ag. 2000
  • 124, 108 livestock farms (< 5 to >= 100 ha)
  • 72, 368 livestock farms (20 to >= 100 ha)
  • 31, 046 farms own or share slurry tankers
  • 35, 281 farms hire or borrow slurry tankers
  • Farm Facilities Survey
farm fragmentation
Farm Fragmentation

27% consist of 1 holding

31% have 4 + fragments

farm fragmentation distance km
Farm Fragmentation – distance (km)

Farm Fragmentation

Fragment Distance

nutrient availability
Nutrient availability

* Dry matter content varies widely and this determines the nutrient contents

n availability in slurry
N availability in slurry

(Ammonium – N)

Organic - N

Inorganic - N

slide27
Spring

NH3

Crop available

NH3

Ammonium - N

Summer

current utilisation vs available n
Current utilisation vs. available N
  • Spreading method
  • Spreading date
  • Soil/weather conditions
slide34
=

=

slide35
NH3

=

=

slide36
NH3

=

NH3

NH3

NH3

=

advantages of trailing shoe application
Advantages of trailing shoe application
  • NH3 emission reduced
  • Recovery of total N ~ 40 - 50%
  • Slurry can be applied to taller crops
  • Slurry applied to soil surface – contamination ?
  • Increased opportunity for spring application
  • Heavier soils in wetter areas
  • Teagasc research
organic n
Organic N
  • Inorganic/organic = 50/50
  • Organic material/solid fraction
  • Currently not considered as a reliable N source
  • Mineralization
  • 60 kg N/ha (33t/ha) for slurry
  • Teagasc research
topic facilities utilisation41
Topic – facilities & utilisation
  • Cost vs. nutrient value
economic value of slurry n million47
Economic value of slurry N (€ million)

€ 67.2

€ 29.5

€ 14.8

€ 3.8

economic value of slurry n million48
Economic value of slurry N (€ million)

€ 67.2

€ 59.1

€ 29.5

€ 14.8

€ 3.8

summary
Summary
  • 29.3 million tonnes slurry
  • Current utilisation
  • Key issues - storage & landspreading
  • Nutrient availability – N efficiency
  • Spreading methodology – conventional vs ts
  • Economic value of slurry - €128 million
conclusions
Conclusions
  • Manure/slurry is a valuable resource
  • Short-term
    • Change application timing from summer/autumn to spring
    • Change spreading method
    • Available N in slurry a/c’s ~ 45% of purchased fert. N
  • Long-term
    • Increase nutrient efficiency
    • Organic N
  • Research
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