When Steve Gauck says some soybean fields bought off to a sluggish start this season, he means what he says. It’s a pun supposed all the best way, as a result of slugs did have an effect on remaining stands in a number of fields, particularly in southern and central counties in Indiana.
“We don’t see slugs every year, but they tend to show up more when it’s cool and wet early,” says Gauck, a regional agronomy supervisor for Beck’s, based mostly close to Greensburg, Ind. Beck’s sponsors Soybean Watch ’21.
Slugs are technically a mollusk, not an insect, so pesticides don’t management them, he notes. There are baits labeled to be used, however they’re costly, and management can differ. A part of the issue is you don’t know when or the place slugs will present up, Gauck says. If slugs skinny the stand past ranges you possibly can dwell with, the one treatment is including extra seed or replanting the complete area.
“The best remedy for slugs is warm weather and tillage,” Gauck says. “They normally move deeper in the soil once soils heat up. Tillage before replanting may help if you know there is a slug problem.”
Seedlings combat onerous
Slugs weren’t the one factor Gauck discovered when checking the Soybean Watch ’21 area or responding to considerations about soybean emergence issues in 2021. The timing of rains after planting and the presence of crusting on lighter, decrease natural matter soils brought on issues with emergence in some areas.
Within the Soybean Watch ’21 area, emergence varies from row to row, relying on the place soybeans had been planted into residue and the place there was much less residue. In some cases, soybeans had a harder time rising by way of residue. Seed depth placement might have been a problem in these instances, however slugs additionally have a tendency to cover beneath the residue as a result of it’s cooler beneath it.
“We found some great examples of soybeans doing their best to emerge, even after their neighbors were already up,” Gauck says. “In some cases, cotyledons were ripped off as soybeans emerged though crusting. In other cases, the cotyledons, or first leaves, showed significant feeding by slugs and/or insects. In many cases, those seedlings, while they didn’t look good, were going to make it. Past work with flagging individual seedlings like that and checking back later tells us that most of them will become productive plants.”
Gauck believes the power to proceed pushing by way of powerful soil situations is a testomony to the vigor bred into most trendy soybean varieties. There are three varieties inside the Soybean Watch ’21 area from two completely different corporations. Gauck discovered cases the place seedlings had been beating the chances and rising in all three varieties.
Stands within the Soybean Watch ’21 area possible will wind up round 70,000 to 130,000 vegetation per acre, with most being within the 85,000 to 105,000 vary.
“Our experience tells us that there should be plenty of plants in this case,” he says. “The only 70,000 spots are on very light, crusted soils in a few places. The stand was fairly uniform, with few big gaps or holes. Final stand shouldn’t be a problem for this field.”