NVZ Dates and Nutrient Offtakes

NVZ Dates and Nutrient Offtake

For the full NVZ guidance for 2013-2016, from www.gov.uk.

Organic Manure

Closed period for applying organic manure with high readily available nitrogen content (e.g. slurry, poultry manures, liquid anaerobic digestate or liquid digested sewage sludge)* :

Start Date	End Date	Land Use	Soil Type
1 August	31 December	Tillage Land	Shallow or sandy soils
1 September	31 December	Grassland	Shallow or sandy soils
16 September	31 December	Tillage land with crops sown on or before 15	September
1 October	31 January	Tillage land	All other soils
15 October	31 January	Grassland	All other soils

* For land newly in an NVZ in 2013, closed periods for organic manures do not need to be complied with until after July 2015.

Manufactured nitrogen

Closed period for applying manufactured nitrogen fertilisers:

Start Date	End Date	Land Use	Soil Type
1 September	15 January	Tillage land	All soils
15 September	15 January	Grassland	All soils

Straw Offtake Calculator

Many people often wonder about the true cost of removing straw from fields. We have done the calculations here for you with current P + K prices to replace the nutrients removed

Fertiliser offtake values are taken from the RB209

MOP – £265/t

TSP – £315/t

Crop	Nutrient	Kg/t Nutrient Removed in straw	Grain Tonnes t/ha	Offtake kg/ha	Fert Required Kg/ha	Cost of Fert /ha
Winter Wheat/Barley	Phosphate	0.6	10	6	13.04	8.93
	Potash	4.8	10	48	80	35.33
					Total Cost of Fertiliser	£44.27

Crop	Nutrient	Kg/t Nutrient Removed in straw	Grain Tonnes t/ha	Offtake kg/ha	Fert Required kg/ha	Cost of Fert /ha
Spring Wheat/Barley	Phosphate	0.8	7	5.6	12.17	£2.47
	Potash	6.2	7	43.4	72.33	£29.72
					Total Cost of Fertiliser	£32.19

Crop	Nutrient	Kg/t Nutrient Removed in straw	Grain Tonnes t/ha	Offtake kg/ha	Fert Required kg/ha	Cost of Fert /ha
Winter/Spring Oats	Phosphate	1	7	7	15.22	£3.09
	Potash	11.1	7	77.7	129.50	£53.21
					Total Cost of Fertiliser	£56.30