Episode 13 of Battle for the Belt is now available:
In Episode 13, we have a conversation with Dr. Kelley Tilmon, Field Crop Entomology State Specialist, about pests in soybean and corn. A field update is also given by CFAES farm managers as well as a farmer from Allen County, Ohio.
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We observed bean leaf beetle damage at all three of our trial locations (Wood County, Clark County, and Wayne County). However, each planting date had different levels of feeding. For planting dates one (April 12-14) and two (April 26-27), more feeding damage was observed than for planting date three (May 11). |
Scouting Updates
Planting date affects the appearance of bean leaf beetle because initial planting attracts overwintering beetles to the site to lay eggs. Later planting may give the second generation in August/September the opportunity to feed on pods that are still maturing. Bean leaf beetle damage early in the growing season does not typically affect yield, but pod feeding has caused economic loss.Battle For the Belt Location Updates
Planting date four occurred at the Wooster location on May 30, just five days after the Western and Northwest locations were planted. The planting conditions at Wooster were dry, like the rest of the state. Comparatively, at this location, planting date three (May 11) has had the most favorable conditions to date. Because of the lack of rain and the dry soil, many would not expect quick emergence; however, there was enough moisture in the soil for both corn and soybean in Western (Clark County) and Northwest (Wood County) to emerge within a week. Ohio is not yet in a drought but is considered abnormally dry on the drought monitor scale.
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Location |
Planting date |
2-inch soil temperature |
Air Temperature (at planting) |
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Wooster, Wayne |
May 30th |
65.9 |
70.2 |
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Western, Clark County |
May 25th |
71°F |
56°F |
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Northwest, |
May 25th |
68°F |
53°F |
The Wooster location is developmentally behind the other locations by at least one stage. Planting dates one, two, and three in corn is at V3, V2, and V1, respectively. The inclement weather has made planting dates one and two fall behind in development. In the soybeans, the stages are V2, VC, and VC for planting dates one, two, and three, respectively. Planting date three has surpassed planting date one in height and is at a similar stage to planting date two. For both crops, the early planting dates are shorter than normal in comparison to planting date three.
At the Western Research Station, for corn, planting dates one, two, and three are V5, V4/V5, and V3, respectively. (For corn, we are also testing several maturities, so there can be some variability in the growth stage). The soybeans at Western are at V3, V2/V1, and VC for planting dates 1, 2, and 3, respectively. At the Northwest Research Station, the stages for planting dates are starting to become more even with Western as Northwest received more GDDs last week. The corn for planting dates one, two, and three is V5, V4, and V3, respectively, and soybeans are at V2, V1, and VC for planting dates one, two, and three, respectively.
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2-inch soil temperature |
Air Temperature (May 29-June 4) |
Planting date |
GDDs (Cumulative) |
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Wooster, Wayne County |
Max: 71°F Mean: 67°F Minimum: 61°F |
Max: 88°F Mean: 70°F Minimum: 46°F |
April 14th April 27th May 11th May 30th |
428 366 313 119 |
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Western, Clark County |
Max: 73°F Mean: 67°F |
Max: 88°F Mean: 70°F Minimum: 46°F |
April 13th April 27th May 11th May 25th |
442 366 313 171 |
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Northwest, |
Max: 91°F Mean: 73°F |
Max: 83°F Mean: 69°F |
April 12th April 26th May 11th May 25th |
531 436 368 200 |
As a recap, this research project includes five planting date windows, 1) Ultra early = late March to early April; 2) Early = mid to late April; 3) Normal = early to mid-May; 4) Late = late May-first week of June; and 5) Very late = mid to late June. Weather permitting, the last planting date (very late) will occur in mid to late June.
Keep following the ‘Battle for the Belt’ this growing season to learn more and get further updates! You can find the full video playlist of Battle for the Belt on the Ohio State Agronomy YouTube channel.
