PROJECT TITLE:
2003 Field performance evaluation of fungicides on spring wheat.
PROJECT LEADER:
D. M. Wichman, Agronomist, Moccasin, MT
PROJECT PERSONNEL:
J Riesselman, Plant Pathology, Bozeman, MT
G.R. Carlson, Agronomist NARC – Havre, MT.
J. Vavrovsky, Research Specialist, Moccasin, MT
OBJECTIVES:
Evaluate the relative effect of seed treatments on spring wheat production.
RESULTS:
2003 Spring wheat seed trial was established late and weather conditions were unfavorable for
robust growth. Do not make major inferences with these results.
SUMMARY:
Drought conditions contributed to low yields and test weights and above normal grain protein
levels. These trials continue to show how spring wheat varieties perform in less than ideal plant
available water conditions.
FUTURE PLANS:
Unknown.
Table 1
SWSDT3
2003 Fungicide seed treats on spring wheat.
Central Ag Research Center. Moccasin, Montana
Yield
Trt
Rate
Fungicide Treatment
#
bu/a
1
9.3
Raxil MD
5.0 oz/cwt
2
10.6
Raxil MD Extra
5.0 oz/cwt
3
9.7
Raxil MD + Gaucho 480
5.0 oz + 0.16 oz/cwt
4
12.2
L1291-A1
5.27 oz/cwt
5
12.9
DB-Green
3.0 oz/bu
6
12.0
DB-Green+RR
3.4 oz/bu
7
12.2
A-4496
3.3 oz/bu
8
11.9
A-4496+Lindane
3.9 oz/bu
12.1
9
Dividend Extreme + Protege 11.25 + 1.0 gai /100kg
10
12.0
Nontreated
Check
Mean
11.48
F-ratio Trts
2.539
P-Value trt
0.0264
CV (s/mean)%
12.88
LSD(0.05 by t)
2.144
Seed date:
16-May-03
into tilled fallow
Harvest Date:
20-Aug-03
Fertilizer: 10-10-10-5 w/seed, 60 N top dress PPI
Insecticide: Malathion June 3,
Dimlen: June 21,
Sevin XLR: July 21
and August 10
This study was compromised by two factors. Study was established late in the season
which minimizes the chances of prolong exposure to cold wetcsoils which are more
conducive to seed decay. Grass hopper infestations were severe and this nursery being
the latest and greenest was the most attractive and susceptible.
54
Test
weight
lbs/bu
50.8
50.9
51.2
50.7
51.2
50.9
51.4
51.0
50.3
50.9
50.91
0.2992
0.9752
2.191
1.618