Fertilizer recommendations for the other small grain species are provided in Tables 6-12 through 6-14. Insect control recommendations can be found in Extension Bulletin 545, Insect Pests of Field Crops.
Table 6-12: Recommended Nitrogen for Small Grains (Pounds Nitrogen Per Acre).
|
|
Crop |
-----Yield Goal (bu/ac)----- |
||
|
|
Barley |
65 |
90 |
115 |
|
|
Oats |
90 |
120 |
150 |
|
Spring Application |
(Spelt) |
40** |
75** |
110** |
|
Spring Application |
(Barley) |
55** |
95** |
135** |
|
Spring Application |
(Oats) |
60** |
90** |
125** |
|
Spring Application |
(Rye) |
60** |
90** |
60** |
*Use short, stiff-strawed varieties.
**Reduce nitrogen rate by 40 pounds per acre on dark colored soils.
Table 6-13: Examples of Phosphorus (Expressed as lb P2O5/ac) Recommended for Small Grains.
|
|
Crop |
-----Yield Goal (bu/ac)----- |
||
|
|
Barley, Spelt |
50 |
70 |
90 |
|
|
Oats |
100 |
130 |
160 |
|
|
Rye |
30 |
45 |
60 |
|
Soil Test Value |
Annual Recommendation (lb P2O5/ac) |
|||
|
lb P/ac |
ppm |
|
|
|
|
30 |
15 |
80 |
95 |
115 |
|
40 |
20 |
55 |
70 |
90 |
|
50-80 |
25-40 |
30 |
45 |
65 |
|
90 |
45 |
15 |
25 |
35 |
|
100 |
50 |
0 |
0 |
0 |
Table 6-14: Examples of Potassium (Expressed as lb K2O/ac) Recommended for Small Grains.
|
Crop |
Yield Goal (bu/ac) |
||||||||||
|
Barley, Spelt |
|
50 |
|
|
70 |
|
|
90 |
|
||
|
Oats |
|
100 |
|
|
130 |
|
|
160 |
|
||
|
Rye |
|
30 |
|
|
45 |
|
|
60 |
|
||
|
|
-------------CEC------------- |
-------------CEC------------- |
-------------CEC------------- |
||||||||
|
Soil Test Value |
10 |
20 |
30 |
10 |
20 |
30 |
10 |
20 |
30 |
||
|
lb K/ac |
ppm |
-----------------------------Annual Recommendation (lb K2O/ac)---------------------------- |
|||||||||
|
50 |
25 |
150 |
190 |
230 |
160 |
195 |
240 |
165 |
255 |
300 |
|
|
150 |
75 |
75 |
140 |
225 |
85 |
145 |
235 |
90 |
155 |
240 |
|
|
250 |
125 |
40 |
65 |
100 |
45 |
65 |
110 |
50 |
55 |
115 |
|
|
350 |
175 |
0 |
0 |
40 |
0 |
0 |
20 |
0 |
0 |
0 |
|
|
450 |
225 |
0 |
0 |
20 |
0 |
0 |
0 |
0 |
0 |
0 |
|
Weed Control for Small Grains
Specific chemical weed control recommendations can
be found in the Weed Control Guide, Extension Bulletin 789, available at all County Extension offices and online at CFAES publications at: estore.osu-extension.org/.