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Winter Oats

Winter Oats N Advice

Nitrogen allowances for winter oats based on soil N index and crop yield potential (kg/ha)*

Soil N Index7.58.59.5
1 145 165 185
2 120 140 160
3 85 105 125
4 45 65 85
To convert kg/ha to units/ac multiply by 0.8

* Proof of higher grain yields is required for an additional 20kg N/ha for each one tonne above a base grain yield of 7.5 t/ha

* Higher grain yields shall be based on the best yield achieved in any of the 3 previous harvests, at 20% moisture content

Suggested N Programme for 8.5t/ha Winter Oats on soil N index 1

Crop Type3Mid-TilleringGS 31/32
Winter Oats 50 kg/ha 70 kg/ha

* Adjust N rates / timings based on soil type and previous experience

P & K Advice for Winter Oats

P & K Advice for Winter Oats based on different crop yields (kg/ha)

Grain Yield (t/ha)1 2 3
Soil P & K Index6.57.58.59.510.5
PKPKPKPKPK
1 45 125 48.8 140 52.6 160 56.4 170 60 190
2 35 105 35.8 125 42.6 145 46.4 155 50 175
3 25 95 25.8 110 32.6 130 36.4 140 40 160
4 0 0 0 0 0 0 0 0 0 0

1The table above shows the levels of P and K for Winter Oats based on soil P and K index and crop potential.
2 Additional P can be applied on the basis of proof of higher grain yields in anyone of the previous 3 years at 20% MC. An additional 3.8 kg P/ha for each extra one tonne above the base yield of 6.5 t/ha.
3 For oats increase/decrease K rates by 15 kg K/ha for each tonne of grain increase or decrease in yield grain as shown in the above table.

Always adjust nutrient applications where organic manures are applied.