Evaluation of onions under sprinkler irrigation
Sidney, MT
jerald Bergman, Joyce Eckhoff
Soil type is
Savage silty clay. Previous
crops were safflower in 2001, onions in 2000, and safflower in 1999.
200 lb/a of 18-46-0 fertilizer was applied in the fall prior to planting and 20 lb N as liquid 28-0-0 through the sprinkler on
June 20, 2002.
Onions were direct-seeded or hand-planted as onion sets in 24” rows on May
21. Direct-seeded onions were hand-thinned to 4” spacing on July 2. Prowl
was applied on May 22 at a rate of 1.5 pt/a for weed control. Sevin was
applied on June 28 and July 29 at a rate of 1 qt/a for flea beetle control.
Plots were sprinkle irrigated on May 22, June 20, July 12, July 23, July 31,
August 7, August 14, August 27, and September 4. Plots were harvested by
hand on September 24. Stands were counted and diameter, number of growing
points within centers, and solids were measured on a representative set of
onions from each plot.
Onion sets under sprinkler irrigation sidney, mt
|
Variety |
Stand
Onion/A |
Single centers
% |
Avg
weight
ounces |
Avg diameter
inches |
Avg
solids
% |
Yield
CWT/a |
|
Setton |
60,240 |
61 |
7.7 |
2.9 |
19.8 |
284 |
|
Sturon |
55,130 |
40 |
6.7 |
2.8 |
16.9 |
229 |
|
Red Baron |
60,580 |
70 |
5.2 |
2.5 |
18.3 |
197 |
|
Vaquero |
34,030 |
75 |
2.9 |
2.1 |
16.8 |
61 |
|
Flintstone |
54,790 |
100 |
1.7 |
1.7 |
18.7 |
58 |
|
LSD 5% |
15,500 |
38.5 |
1.2 |
0.2 |
|
33.2 |
|
Planted May 21
Harvested September 24 |
Direct-seeded onions under sprinkler irrigation – Sidney, mt
|
Variety |
Stand
Onion/A |
Single centers
% |
Avg weight
ounces |
Avg diameter
inches |
Avg solids
% |
Yield
CWT/a |
|
RCX4111 |
76,570 |
35 |
7.6 |
3.1 |
19.1 |
338 |
|
Infinity |
95,290 |
70 |
5.4 |
2.7 |
18.6 |
322 |
|
Ranchero |
65,340 |
75 |
7.7 |
3.1 |
19.4 |
315 |
|
SR70020N |
76,570 |
75 |
6.3 |
2.9 |
17.0 |
304 |
|
Tesoro |
94,270 |
50 |
5.2 |
2.8 |
21.6 |
297 |
|
Brahma |
76,910 |
50 |
5.9 |
2.7 |
16.2 |
278 |
|
Granero |
69,760 |
45 |
6.5 |
2.9 |
16.3 |
272 |
|
SWO7761 |
94,270 |
70 |
4.4 |
2.5 |
17.0 |
264 |
|
Tequila |
71,130 |
40 |
6.0 |
2.7 |
19.4 |
263 |
|
Mesquite |
75,210 |
46 |
5.3 |
2.7 |
17.7 |
250 |
|
SWO7391 |
66,700 |
30 |
5.3 |
2.9 |
18.5 |
250 |
|
Super Chief |
61,940 |
35 |
6.5 |
2.9 |
17.1 |
245 |
|
DPSX1171 |
81,680 |
55 |
4.9 |
2.6 |
20.9 |
240 |
|
Lorenzos |
70,440 |
0 |
5.5 |
2.9 |
17.0 |
238 |
|
Vaquero |
60,240 |
35 |
6.8 |
3.0 |
17.6 |
236 |
|
T439 |
65,000 |
25 |
6.1 |
2.9 |
20.4 |
236 |
|
Frosty |
76,230 |
45 |
5.2 |
2.8 |
20.0 |
234 |
|
Kodial |
60,580 |
25 |
6.1 |
2.8 |
18.7 |
229 |
|
Teton |
61,260 |
60 |
6.3 |
2.8 |
20.0 |
224 |
|
6876 |
62,280 |
45 |
5.7 |
2.8 |
18.0 |
223 |
|
RCX4391 |
75,210 |
45 |
4.6 |
2.6 |
19.3 |
220 |
|
Varsity |
60,920 |
60 |
5.7 |
2.8 |
18.1 |
210 |
|
Condor |
69,760 |
45 |
4.8 |
2.5 |
19.3 |
208 |
|
T441 |
75,890 |
65 |
4.5 |
2.7 |
19.9 |
207 |
|
RCX4101-L |
69,420 |
75 |
4.8 |
2.6 |
18.2 |
206 |
|
Tioga |
70,100 |
60 |
5.0 |
2.6 |
17.7 |
205 |
|
SWO7074 |
57,850 |
65 |
5.6 |
2.6 |
16.6 |
202 |
|
DPSX1172 |
72,830 |
25 |
4.4 |
2.6 |
18.5 |
200 |
|
NiZ37-32 |
94,270 |
45 |
3.5 |
2.4 |
19.8 |
198 |
|
Seahawk |
88,140 |
50 |
3.6 |
2.6 |
17.0 |
191 |
|
RCX4129-L |
62,620 |
35 |
4.5 |
2.5 |
19.2 |
172 |
|
Sabroso |
67,040 |
60 |
4.2 |
2.6 |
21.5 |
172 |
|
RCX60539 |
42,540 |
35 |
6.4 |
2.7 |
18.6 |
164 |
|
SR7000ON |
65,680 |
75 |
4.0 |
2.5 |
18.0 |
162 |
|
Ricochet |
71,130 |
75 |
3.6 |
2.4 |
20.6 |
158 |
|
DPSX1170 |
72,830 |
40 |
3.4 |
2.3 |
19.2 |
155 |
|
RCX4156 |
63,980 |
65 |
3.9 |
2.3 |
17.7 |
150 |
|
Caballero |
66,700 |
75 |
3.5 |
2.3 |
17.9 |
142 |
|
Staccato |
69,760 |
45 |
3.1 |
2.3 |
| |