Presentation is loading. Please wait.

Presentation is loading. Please wait.

Otherwise known as: Manure Happens

Similar presentations


Presentation on theme: "Otherwise known as: Manure Happens"— Presentation transcript:

1 Otherwise known as: Manure Happens
Agronomy 101 Otherwise known as: Manure Happens

2 Topics Manure Characteristics Nutrient content N-P-K
Factors affecting nutrient content of manure Differences amongst animal species Sampling requirements and methods Application equipment

3 Topics Record and manure management Nutrient Budgets Worksheets

4 7020.0300 Definitions Subp. 4. Animal manure or manure.
“Animal manure” or “manure” means poultry, livestock, or other animal excrete or mixture of excrete with feed, bedding, precipitation, or other materials. https://www.revisor.mn.gov/rules/?id=

5 7020.0300 Definitions Subp. 13b. Manure – contaminated runoff
“Manure-contaminated runoff” means a liquid that has come into contact with animal manure and drains over land from any animal feedlot, manure storage area, or animal land application site. https://www.revisor.mn.gov/rules/?id=

6 7020 and NPDES Definitions Solid Manure
Manure Stockpiling Sites Subp. 1, item B. Manure must not be placed on a stockpiling site unless a three-to- one horizontal-to-vertical ratio can be maintained or the manure has at least, a 15 percent solids content https://www.revisor.mn.gov/rules?id=

7 7020 and NPDES Definitions NPDES Permit language
Solid Manure (15 percent or more solids, and handled as a solid) Winter Application Liquid Manure is considered to be any Manure that does not meet the definition of “solid Manure” provided in item 3.

8 Manure Sampling Requirements
NPDES = annually Storage area for 100 au or more = once every 4 years 300 au or more farms = for 3 consecutive years than once every 4 years LAND APPLICATION OF MANURE. Subp. 2.Manure nutrient testing requirements. https://www.revisor.mn.gov/rules/?id=

9 Manure Sampling Recommendations
Composite samples How is the manure handled/managed Housing – bedding – equipment Liquid or solid manure Storage system agitated Custom hauler Best time to sample – when applying manure Recommend annual sampling Recommend running averages

10 Reference Materials Beer and Baking U of M and Dept of Ag
Nutrient & Manure Management Tables and Nutrient Management Tables Excellent reference materials

11 Nitrogen Availability and Loss, as Affected by Method of Manure Application and Animal Species
Year Available % of Total Nitrogen Available Per Year Broadcast Incorporation Timing Injection After 96 hrs. 12 to 96 hrs. Within 12 hrs. Sweep Knife Beef Year 1 25 45 60 50 Year 2 Lost 40 20 5 10 Dairy 55 Swine 35 75 80 70 15 30 Poultry

12 Liquid Manure Application Equipment

13 Double disks manure applicator

14 Double disks manure applicator

15 Sweep injection manure applicator

16 Sweep injection manure applicator

17 Knife injection manure applicator

18 Broadcast solid manure applicators
Typically used with solid manure and semi-solid manures End gate spreaders are used with dry manure and bedded pack manure Side-slingers used with semi-solids or slurry manures

19 End gate spreader

20 Side-slinger spreader

21 or Toyota Cowrolla

22 Nutrient Budgets Method to calculate amount of manure and or fertilizer to apply to planned crop Calculations use MN-extension formulas Variables include: Crop rotation and yield goals Manure analysis and method of application Fertilizer use Beer & Baking or Balancing your Checkbook

23 Nutrient Budgets crop needs
Crop rotation = nutrient recommendation

24 Nutrient Budgets availability
Type of animal and method of application = nutrient availability

25 Nutrient Budgets what’s in your account
Calculate any 2nd year manure credit Based on previous years total manure nitrogen applied

26 Nutrient Budgets Example
Corn following corn = 180 pounds of nitrogen Finishing swine manure analysis for N-P-K: pounds/1000 gallons Method of manure application: Broadcast immediate incorporation with disks: Nitrogen availability =75% Starter fertilizer credit: 5 – 10 – 0 pound N-P-K

27 How many #s of N are available?
43.5# 35.6# 58.4# 40.3# #1 – (44# N Available (58# x .75= 43.5#))

28 Nutrient Budgets Example

29 How many gallons of manure can be applied per acre?
4150 gallons / acre 3500 gallons / acre 4000 gallons / acre 6050 gallons / acre #3 – (4000 gal / acre)

30 Nutrient Budgets Example

31 Nutrient Budgets Example
180 – 5# N in starter = 175 # nitrogen 58# N in manure x 75% (available N) = 43.5 175 ÷ 43.5 = 4.022 4.022 x 1000 = 4000 gallons/acre

32 2nd Budget Example Work thru the following example:
Crop rotation: corn following soybeans Finishing swine manure: 58 – 44 – 40 per 1000/gals of N-P-K Method of application: Sweep injection 4,000 gallons of hog manure applied 2 years ago 5 gallons 28% in herbicide = 15# nitrogen

33 Manure Nutrients Short Form

34 How many gallons of manure can be applied per acre?
3000 gallons / acre 1700 gallons / acre 2000 gallons / acre 3500 gallons / acre #2 – (1700 gal/acre)

35 Final Answer Corn on Beans 180# N needed – 40#N from beans = 140#N
140# N – last years manure 35# N = 105#N (4000 gallon x 15% = 35#N) 105# N – Fertilizer application 15# = 80#N 80#N / 46.4# N per 1000 gallon (58# N/ 1000 gallon x 80%) = 1700 gallons per acre

36 3rd Budget Example Work thru the following example:
Crop rotation: corn following corn following average alfalfa Dairy manure: 10 – (N-P-K pounds/ton) Method of application: Broadcast incorporated within 2 days at 25 tons/acre Manure applied 2 years ago at 25 tons/acre use same analysis (10-3-6)

37 How many ton can be applied per acre?
32.5 ton per acre 17 ton per acre 19 ton per acre 21.5 ton per acre #2 – (17 ton per acre)

38 Final Answer Corn on corn with alfalfa 2 years ago – 130#N
(180# - 50#N from alfalfa 2 years ago) 130#N – last years manure 62#N = 68#N (25 ton x 10#N/ton x 15% = 62#N) 68#N needed / 4#N ton manure = 17 ton

39 Not a good day to visit the farm

40 Phosphorous High phosphorous soils - added requirements
Sensitive areas > 22 Bray > 17 Olsen Over 300’ from sensitive areas > 75 Bray > 60 Olsen Interim permit required some cases

41

42 Resource

43 Crop Needs

44 Crop Removal

45 Example 1 Soil sample – 72 ppm Bray 450 AU Cattle site
Intermittent Stream Average yield 210 bu corn/acre Manure test –

46 Phosphorous Concerns? Over 300’ from sensitive area
No issue with phosphorus Nitrogen limits Within 300” from sensitive area Prevent phosphorus buildup Utilize crop removal figures

47 Example 2 Soil sample – 82 ppm Bray 450 AU Cattle site
Intermittent Stream Average yield 210 bu corn/acre

48 How many ton can be applied per acre?
Determined by Nitrogen limits 6.2 ton per acre 5.1 ton per acre 5.7 ton per acre 3 or 4 depending on removal rates

49 Questions?


Download ppt "Otherwise known as: Manure Happens"

Similar presentations


Ads by Google