Oakes Irrigation Research
Site
Carrington Research Extension Center * North Dakota State University
P.O. Box 531, Oakes, ND 58474-0531, Voice: (701) 742-2189, FAX: (701)
742-2700, email: rgreenla@ndsuext.nodak.edu
BAS51002 AND BAS 516UDF FOR WHITE MOLD CONTROL IN PINTO BEAN, 2001
Pat Gross and Luis del Rio, NDSU Plant Pathology Department
See “WHITE MOLD CONTROL IN EDIBLE BEAN, 2001 STUDIES” for general description of materials and methods. Fungicide applications were made on July 5 at 35% bloom on all treatments. Treatments 6 and 11 received a second application on July 11 at 100% bloom. Row closure was 50% at the first spray and near 100% on July 11.
Table 49. Effects of BAS51002 and BAS516UDF on white mold control at Oakes, ND, 2001.
Treatment |
% incidence1 |
% severity2 |
Yield (lbs/acre) |
|||
Chemical |
rate/acre |
July 30 |
Aug 7 |
July 30 |
Aug 7 |
|
Untreated Check |
----- |
61.3 |
67.5 |
22.7 |
34.6 |
2467 |
BAS 51002 70% |
5.7 oz |
45.0 |
60.0 |
13.2 |
22.3 |
2815 |
BAS 51002 70% |
6.9 oz |
31.3 |
40.0 |
5.1 |
12.4 |
2718 |
BAS 51002 70% |
8.0 oz |
46.3 |
57.5 |
5.8 |
24.3 |
2645 |
BAS 51002 70% |
10.3 oz |
21.3 |
33.8 |
3.9 |
11.3 |
2808 |
BAS 51002 70%3 |
8.0 oz |
8.8 |
22.5 |
0.7 |
8.0 |
2729 |
BAS 516UDF 38% |
10.5 oz |
58.8 |
62.5 |
14.8 |
31.0 |
2633 |
BAS 516UDF 38% |
14.7 oz |
60.0 |
73.8 |
16.0 |
33.3 |
2440 |
BAS 516UDF 38% |
16.8 oz |
56.3 |
58.8 |
13.6 |
26.6 |
2661 |
BAS 516UDF 38% |
21.1 oz |
51.3 |
66.3 |
9.7 |
24.4 |
2627 |
BAS 516UDF 38%3 |
14.7 oz |
42.3 |
57.5 |
5.6 |
17.1 |
2661 |
BENLATE 50% |
28.2 oz |
41.3 |
48.8 |
6.7 |
14.1 |
2926 |
LSD (0.05) |
14.6 |
14.8 |
15.8 |
19.3 |
344 |
|
1Incidence based on number of infected plants divided by total number of observations.
2Severity is based on average percentage disease of four replications.
3Two spray applications: the first on July 5 and a second application on July 11.
Rainfall was below average for the growing season. Frequent irrigation throughout the summer provided good soil moisture. Temperatures were warmer then the five-year average starting around June 8, these warm temperatures provided favorable plant growth. Plants began to flower around July 1. Row closure was around 50% at time of first spray application on July 5.
Plants continued to flower uniformly for most of the summer. White mold was not observed from natural infection so a suspension of white mold spores was sprayed on the middle two rows of each plot on July 9 to insure white mold infection. White mold was observed in the field around seven days later. White mold was uniform across the field. Bas 51002 treated plants with two applications had significantly less white mold incidence and severity compared to the treated check Benlate and the untreated check. BAS 51002 at 5.7 oz/acre was the only spray treatment except Benlate, which significantly increased yield compared to the untreated check. Total rainfall during the two-week period of spraying was 0.22 in.
Go to Oakes Irrigation Research Site 2001 annual report
Go to Oakes Irrigation Research Site disease studies