Nutrient Management Workbook

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Nutrient Management Workbook

Author:	OMAFRA Staff
Creation Date:	10 December 2003
Last Reviewed:	25 November 2004


1. Farmstead Information Part 1 Part 2	2. Nutrient Management Workbook Summary Metric Version Imperial Version
3. Guide to Completing the Workbook - Sections A to S
Section A - Field Information Section B - Maximum Allowable Liquid Loading Rate Section C - Manure Information Section D - Commercial Fertilizer Section E - Previous Crop Nitrogen Section F - Previous Manure Nitrogen Section G - This Year's Manure Section H - Ontario Crop Production Requirements Section I - Agronomic Nutrient Balance Section J - Field Inputs	Section K - Manure Nutrients Applied Section L - Crop Removal Section M - Crop Removal Balance Section N - Nitrogen Available for Potential Loss Section O - Nitrogen Index Section P - Phosphorous Index Section Q - Minimum Separation Distance from Surface Water Section R - Useable Acreage Section S - Maximum Rates
4. Glossary	5. For More Information...

Guide to Completing the Workbook � Sections A to S

The workbook is a tool that simulates the NMAN Software.

This workbook is organized in sections, from A to S, with each line of the Worksheet corresponding to the detailed descriptions found here help you develop the required information.

Agronomic Nutrient Balance (Section D to Section I)

Section H � Ontario Crop Production Requirements

Using soil test results, obtain production requirements from OMAF Publication 811, 360 or 363. Recommendations for some common field crops are displayed in the tables below. If a soil test is unavailable, assume that the P test is 101 mg/l, and the K test is 251 mg/l. These values will give a zero recommendation for phosphorus and/or potash. O. Reg 267/03 requires soil samples for all but initial required regulated NMP.

Table 8: P₂O₅ and K₂O Recommendations - Metric
Soil Test	P₂O₅ Recommendations (kg/ha)
(mg/L)	Corn	Beans	Wheat	Canola	Alfalfa
0 - 3	110	81	71	71	180
4 - 5	100	61	61	61	120
6 - 7	90	50	50	50	90
8 - 9	69	40	30	30	61
10 - 12	50	30	20	20	30
13 - 15	20	20	20	20	20
16 - 20	20	0	20	0	0
21 - 25	20	0	0	0	0
26 - 30	20	0	0	0	0
> 31	0	0	0	0	0

Soil Test	K₂O Recommendations(kg/ha)
(mg/L)	Corn	Beans	Wheat	Canola	Alfalfa
0 - 15	170	121	50	71	480
16 - 30	160	111	40	50	400
31 - 45	140	91	30	40	319
46 - 60	110	81	20	30	270
61 - 80	80	61	20	20	200
81 - 100	50	40	20	20	130
101 - 120	30	30	20	0	69
121 - 150	0	0	0	0	20
> 151	0	0	0	0	0

Source: OMAF Publication 811 Agronomic Guide for Field Crops

Table 8: P₂O₅ and K₂O Recommendations - Imperial
Soil Test	P₂O₅ Recommendations (lb/ac)
(ppm)	Corn	Beans	Wheat	Canola	Alfalfa
0 - 3	98	72	63	63	161
4 - 5	89	54	54	54	107
6 - 7	80	45	45	45	80
8 - 9	62	36	27	27	54
10 - 12	45	27	18	18	27
13 - 15	18	18	18	18	18
16 - 20	18	0	18	0	0
21 - 25	18	0	0	0	0
26 - 30	18	0	0	0	0
> 31	0	0	0	0	0

Soil Test	K₂O Recommendations (lb/ac)
(ppm)	Corn	Beans	Wheat	Canola	Alfalfa
0 - 15	152	108	45	63	428
16 - 30	143	99	36	45	357
31 - 45	125	81	27	36	285
46 - 60	98	72	18	27	241
61 - 80	71	54	18	18	178
81 - 100	45	36	18	18	116
101 - 120	27	27	18	0	62
121 - 150	0	0	0	0	18
> 151	0	0	0	0	0

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Table 9. Nitrogen Recommendations for Common Field Crops
Nitrogen Recommendations - Corn
Location	Expected Yield
Location	6 tonne/ ha	100 bu/ac	8 tonne/ ha	130 bu/ac	9 tonne/ ha	150 bu/ac	10 tonne/ ha	160 bu/ac	11 tonne/ ha	175 bu/ac
Eastern Ontario	95 kg/ha	82 lb/ac	135 kg/ha	120 lb/ac	168 kg/ha	150 lb/ac	179 kg/ha	160 lb/ac	202 kg/ha	180 lb/ac
Western/Central (<2700 chu)	106 kg/ha	95 lb/ac	123 kg/ha	110 lb/ac	135 kg/ha	120 lb/ac	135 kg/ha	120 lb/ac	140 kg/ha	125 lb/ac
Midwestern Ontario (2700-2900 chu)	140 kg/ha	125 lb/ac	157 kg/ha	140 lb/ac	168 kg/ha	150 lb/ac	168 kg/ha	150 lb/ac	179 kg/ha	160 lb/ac
Southwestern Ontario (>2900 chu)	168 kg/ha	150 lb/ac	185 kg/ha	165 lb/ac	196 kg/ha	175 lb/ac	202 kg/ha	180 lb/ac	213 kg/ha	190 lb/ac

For sidedress applications in SW Ontario reduce N recommendations by 15%

Nitrogen Recommendations - Cereals and Canola
Crop	Expected Yield
Crop	2.4 tonne/ha	35 bu/ac	4.0 tonne/ha	60 bu/ac	4.7 tonne/ha	70 bu/ac	5.4 tonne/ha	80 bu/ac
Winter Wheat (soft white/red)	---	---	84 kg/ha	75 lb/ac	95 kg/ha	85 lb/ac	112 kg/ha	100 lb/ac
Winter Wheat (hard red)	---	---	123 kg/ha	110 lb/ac	135 kg/ha	120 lb/ac	151 kg/ha	135 lb/ac
Spring Wheat, Barley (<2600 chu)	71 kg/ha	63 lb/ac	71 kg/ha	63 lb/ac	71 kg/ha	63 lb/ac	71 kg/ha	63 lb/ac
Barley, Mixed Grain (>2600 chu)	45 kg/ha	40 lb/ac	45 kg/ha	40 lb/ac	45 kg/ha	40 lb/ac	45 kg/ha	40 lb/ac
Winter Barley, Winter Rye*	91 kg/ha	81 lb/ac	91 kg/ha	81 lb/ac	91 kg/ha	81 lb/ac	91 kg/ha	81 lb/ac
Oats, Spring Rye (<2600 chu)	56 kg/ha	50 lb/ac	56 kg/ha	50 lb/ac	56 kg/ha	50 lb/ac	56 kg/ha	50 lb/ac
Oats, Spring Rye (>2600 chu)	36 kg/ha	32 lb/ac	36 kg/ha	32 lb/ac	36 kg/ha	32 lb/ac	36 kg/ha	32 lb/ac
Spring Canola (<2300 chu)	135 kg/ha	120 lb/ac	135 kg/ha	120 lb/ac	135 kg/ha	120 lb/ac	---	---
Spring Canola (>2300 chu)	101 kg/ha	90 lb/ac	101 kg/ha	90 lb/ac	101 kg/ha	90 lb/ac	---	---
Winter Canola (at planting) -	39 kg/ha	35 lb/ac	39 kg/ha	35 lb/ac	39 kg/ha	35 lb/ac	---	---
Winter Canola (spring) -	163 kg/ha	145 lb/ac	202 kg/ha	180 lb/ac	213 kg/ha	190 lb/ac	---	---

* N rec for Winter Rye not in rotation with Tobacco

Nitrogen Recommendations - Forages
Crop	Forage Value $/tonne ($/ton)
Crop	$33/ tonne	$30/ ton	$55/ tonne	$50/ ton	$77/ tonne	$70/ ton
Hay or Pasture (>1/2 legumes)	0	0	0	0	0	0
Hay or Pasture (1/3 to 1/2 legume)	67 tonne/ha	60 bu/ac	67 tonne/ha	60 bu/ac	67 tonne/ha	60 bu/ac
Grass Hay* (less than 1/3 legume)	56 tonne/ha	50 bu/ac	95 tonne/ha	85 bu/ac	112 tonne/ha	100 bu/ac
New legume seeding (with a nurse crop)	16 tonne/ha	14 bu/ac	16 tonne/ha	14 bu/ac	16 tonne/ha	14 bu/ac
New legume seeding (without a nurse crop)	0	0	0	0	0	0

*Assumes a 2 cut system - (one cut decrease by 20%; three cuts increase by 20%)

Nitrogen Recommendations - Beans
Crop	Expected Yield
Crop	33 tonne/ha	30 bu/ac
Soybeans	0	0
Dry Edible Beans	45 to 67 kg/ha	40 to 60 lb/ac

Source: Agronomy Guide for Field Crops OMAF Publication 811

Example:

A field located in Eastern Ontario has a P soil test of 35 mg/L (or ppm) and K soil test of 79 mg/L (or ppm). The field is to be planted to corn and it's expected to yield 135 bu/ac. The N requirement is obtained from the top chart by estimating the yield between 130 bu/ac and 150 bu/ac. The N recommendation is approximately 128 lb/ac. The phosphorus recommendation will be zero, and the potash recommendation will be 71 pounds of K₂0 per acre.

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