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

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 l.jpg
Manure efficient nutrient use

  • 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 l.jpg
Topic – facilities & utilisation efficient nutrient use

  • Manure management facilities

    • Storage

    • Spreading date

    • Spreading method

  • Nutrient efficiency

    • Manure type

    • N, P & K

  • Cost vs. nutrient value


Requirements for efficient nutrient use l.jpg
Requirements for efficient nutrient use efficient nutrient use

  • NMP

  • Changing slurry spreading date

  • Changing slurry spreading method

  • Storage vs. spreading date?

  • Cost benefit?


Slide5 l.jpg

Efficient manure nutrient use efficient nutrient use


Slide6 l.jpg
NMP efficient nutrient use

  • Soil

  • Manure

  • Crop demand

  • Code of Practice

    • Rate

    • Date

    • Method


Current utilisation l.jpg
Current utilisation? efficient nutrient use

  • 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 l.jpg
Topic – facilities & utilisation efficient nutrient use

  • Manure management facilities

    • Storage

    • Spreading date

    • Spreading method





Timing of slurry application l.jpg
Timing of slurry application efficient nutrient use

?


Timing of slurry application13 l.jpg
Timing of slurry application efficient nutrient use

WHY ?

?


Slide14 l.jpg

Efficient manure nutrient use efficient nutrient use


Slide15 l.jpg

Efficient manure nutrient use efficient nutrient use


Slide16 l.jpg

Efficient manure nutrient use efficient nutrient use


Storage l.jpg
Storage efficient nutrient use

  • 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 l.jpg
Landspreading - N efficiency efficient nutrient use

  • N efficiency – key issue

  • Spreading date & rate

    • Soil/weather conditions

  • Contamination

    • Spreading date

  • Spreader availability

    • Farmer owned

    • Contractor


Slide19 l.jpg

Slurry spreading opportunities efficient nutrient useDistribution 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 l.jpg
Silage contamination ? efficient nutrient use

  • End March/early April

  • Crop – too far advanced

  • Risk of poor fermentation


Spreader availability l.jpg
Spreader availability efficient nutrient use

  • 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 l.jpg
Farm Fragmentation efficient nutrient use

27% consist of 1 holding

31% have 4 + fragments


Farm fragmentation distance km l.jpg
Farm Fragmentation – distance (km) efficient nutrient use

Farm Fragmentation

Fragment Distance


Topic facilities utilisation24 l.jpg
Topic – facilities & utilisation efficient nutrient use

  • Nutrient efficiency


Nutrient availability l.jpg
Nutrient availability efficient nutrient use

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


N availability in slurry l.jpg
N availability in slurry efficient nutrient use

(Ammonium – N)

Organic - N

Inorganic - N


Slide27 l.jpg

Spring efficient nutrient use

NH3

Crop available

NH3

Ammonium - N

Summer




Current utilisation vs available n l.jpg
Current utilisation vs. available N efficient nutrient use

  • Spreading method

  • Spreading date

  • Soil/weather conditions


Slide33 l.jpg

= efficient nutrient use


Slide34 l.jpg

= efficient nutrient use

=


Slide35 l.jpg

NH efficient nutrient use3

=

=


Slide36 l.jpg

NH efficient nutrient use3

=

NH3

NH3

NH3

=


Slide37 l.jpg

Efficient manure nutrient use efficient nutrient use


Advantages of trailing shoe application l.jpg
Advantages of trailing shoe application efficient nutrient use

  • 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 l.jpg
Organic N efficient nutrient use

  • 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 l.jpg
Topic – facilities & utilisation efficient nutrient use

  • Cost vs. nutrient value



Economic value of slurry n million43 l.jpg
Economic value of slurry N (€ million) efficient nutrient use

88%

44%

22%

6%


Economic value of slurry n million44 l.jpg
Economic value of slurry N (€ million) efficient nutrient use

€ 67.2


Economic value of slurry n million45 l.jpg
Economic value of slurry N (€ million) efficient nutrient use

€ 67.2

€ 3.8


Economic value of slurry n million46 l.jpg
Economic value of slurry N (€ million) efficient nutrient use

€ 67.2

€ 14.8

€ 3.8


Economic value of slurry n million47 l.jpg
Economic value of slurry N (€ million) efficient nutrient use

€ 67.2

€ 29.5

€ 14.8

€ 3.8


Economic value of slurry n million48 l.jpg
Economic value of slurry N (€ million) efficient nutrient use

€ 67.2

€ 59.1

€ 29.5

€ 14.8

€ 3.8



Economic value million of slurry50 l.jpg
Economic value (million €) of slurry efficient nutrient use

€ 83.9 million


Economic value million of slurry51 l.jpg
Economic value (million €) of slurry efficient nutrient use

€ 98.7 million


Economic value million of slurry52 l.jpg
Economic value (million €) of slurry efficient nutrient use

€ 128.1 million


Summary l.jpg
Summary efficient nutrient use

  • 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 l.jpg
Conclusions efficient nutrient use

  • 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


Slide55 l.jpg

Efficient manure nutrient use efficient nutrient use


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