Winter Oats

Winter Oats N Advice

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

Soil N Index	7.5	8.5	9.5
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 advice for 8.5t/ha Winter Oats on soil N index 1 165kg N/ha

Crop Type3	GS 30	GS 32
Winter Oats	80 kg/ha	85 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 Index	6.5		7.5		8.5		9.5		10.5
	P	K	P	K	P	K	P	K	P	K
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.