Crop Insurance Today September 2017 - 12
Table 4 CORN Ohio
Treatment
Expected
50% 10L
100% 10L
50% 15L
100% 15L
50% Tassel
50% 10L + 50% 15L
50% 10L + 50%T
100% 10L + 50% 15L
100% 10L + 50%T
50% 15L + 50%T
100% 15L + 50%T
50% 10L + 50% 15L + 50%T
Measured
Loss%
6
16
15
51
31
16
33
39
67
34
88
35
5
9
14
38*
26
18
27
24*
30*
20*
49*
26
Table 5 C0RN North Dakota
Leaf Stage
25
Green Snap%
50
Loss%
75
14L
17L
Chart 14 & 17
Tassel
Chart Tassel
9
13
16
8
25
8
23
32
23
50
23
36
61
35
75
sponse when the chile peppers are direct seeded
at the higher rates and not thinned during the
growing season.
CORNOhio
This year marks the third year of corn research
focused on the accuracy of the second or multiple
loss procedures. The research looked at defoliation
applied at a single, two and three stages of growth.
The stages were 10 leaf, 15 leaf and tasseling. The
levels of defoliation were 0, 50 and 100 percent.
Differences in yield were measured between the
expected loss from the current charts and the
actual measured loss. The second and third loss
treatments resulted in higher yields than what is
contained in current charts. (Table 4)
Second loss corn research in Ohio.
CORNNorth Dakota,
Minnesota, Nebraska
Research trials began in 2015 in North Dakota, Minnesota, Illinois, and Nebraska to study
the influence of green snap on corn production.
The trials are set so that corn plants are treated
at either the 14-leaf, 17-leaf, or tassel stage of development. The plants are snapped at the main
ear-node at various percentages of total number
of plants (0, 25, 50, or 75 percent) and then compared to losses from the current charts.
The results from the 2016 trial in North Dakota had losses that were consistently lower than
those contained in the charts. For example, the
75 percent snapped treatments for the 14-leaf
stage had losses of 23 percent, compared to 60
percent in the current charts. Similar results were
obtained at 17-leaf and tassel stage for the 75 percent treatments and are shown in Table 5.
The 2016 results from Minnesota had similar
results to those obtained in North Dakota, except
Researcher Steve Quiring looking at corn
greensnap research in Minnesota.
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