Winter application of manure in Ohio: what’s allowed?

Last week’s snow was a reminder that we’re still in the middle of winter in Ohio, with more cold weather yet to come.  Winter weather is a challenge for those who handle manure, and it’s equally challenging to know the laws for applying manure on frozen and snow covered ground.  Those laws vary according to several important factors:  whether ground is frozen or snow covered, whether a farm is operating under a permit, and the geographical location of the land application.  Here’s a summary of the different winter application rules and standards in effect this winter.

What is frozen ground?  Ohio’s rules don’t define the term frozen ground, but generally, ground is considered frozen if you cannot inject manure into it or cannot conduct tillage within 24 hours to incorporate the manure into the soil.

Farms with Permits.  Farms with permits from the Ohio Department of Agriculture (ODA) or Ohio EPA operate under different rules than other manure applications in Ohio, and they cannot apply manure in the winter unless it is an extreme emergency.  Movement to other suitable storage is usually the selected alternative.  Several commercial manure applicators have established manure storage ponds in recent years to help address this issue. Continue reading

Suspected 2,4-D Resistant Waterhemp Population Discovered

Source:  ICM News, Iowa State University

We know the evolution of resistance in waterhemp populations happens faster than new herbicides are discovered, so the recent report of dicamba resistant waterhemp in Iowa by Bayer was not unexpected. Corteva has now reported the discovery of a suspected 2,4-D resistant waterhemp population in Iowa. These reports emphasize the need to use herbicides wisely and diversify weed management tactics beyond herbicides, especially as more farmers rely on herbicide group (HG) 4-based postemergence weed control in both corn and soybean.

The particulars

In late January 2024, Corteva reported the discovery of a suspected 2,4-D resistant waterhemp population in 2022 in Wright County, Iowa. A Corteva employee collected two samples of waterhemp seed, one from plants in the field and one from plants growing in the ditch adjacent to the field. While greenhouse testing with seed collected from plants in the field did not confirm resistance, plants grown from the ditch population are suspected to be 2,4-D resistant. The communication reported that the ditch had a multi-year history of 2,4-D application to manage broadleaf weeds. Corteva will continue evaluation of the populations in the greenhouse and the field. If resistance is confirmed in this population, it will become at least the fourth report of 2,4-D resistance in waterhemp, joining prior reports from Nebraska in 2009 (Bernards et al. 2012), Illinois in 2016 (Evans et al. 2019), and Missouri in 2018 (Shergill et al. 2018).

Iowa State University screened populations of waterhemp against several herbicides in 2019 at their 1X rates (Table 1). On average, waterhemp exhibited 17% survival to 2,4-D, 5% survival to dicamba, and 4% survival to glufosinate (Hamberg et al. 2023). We are rapidly losing herbicide options for postemergence control of waterhemp.

Best management practices to slow resistance development

Now is the time to evaluate how to improve weed management in fields. While herbicides will remain the primary tactic to manage weeds, farmers can implement several best management practices to slow herbicide resistance evolution and improve control of weeds like waterhemp.

  1. Choose an effective herbicide program for the weed spectrum present on a field-by-field basis.
    1. Use full rates of effective residual herbicides and plant into a weed-free seedbed.
    2. Include overlapping residual herbicides and multiple effective herbicide groups in postemergence applications to provide longer waterhemp control. Consult manufacturers for specific tank-mix recommendations.
    3. Make timely applications and choose appropriate adjuvants, nozzles, application volume, etc.
    4. Scout fields 7-10 days after postemergence herbicide applications to evaluate weed control.
  2. Use a diversity of weed management tactics, including chemical, mechanical, and cultural options. Narrow row spacing, cover crops, more diverse crop rotations, and tillage are effective tactics to suppress waterhemp.
  3. Control weed escapes prior to seed production to reduce future weed populations and prevent resistance from spreading.
  4. Reduce influx of weed seed into crop fields by managing weeds in field edges and cleaning equipment between movement from problematic fields to clean fields. The detection reported here indicates the threat of weeds in field edges.

EPA issues “existing stocks” order for over-the-top dicamba use

By:Peggy Kirk Hall, Attorney and Director, Agricultural & Resource Law Program

federal court decision last week vacated the registrations of dicamba products XtendiMax, Engenia, and Tavium for over-the-top applications on soybean and cotton crops, making the use of the products unlawful (see our February 12, 2024 blog post).  The decision raised immediate questions about whether the U.S. EPA would exercise its authority to allow producers and retailers to use “existing stocks” of dicamba products they had already purchased.  Yesterday, the U.S. EPA answered those questions by issuing an Existing Stocks Order that allows the sale and use of existing stocks of the products that were packaged, labeled, and released for shipment prior to the federal court decision on February 6, 2024.  For Ohio, the EPA’s order allows the sale and distribution of existing stocks until May 31, 2024 and the use of existing stocks until June 30, 2024.

Here is the EPA’s order:

  1. Pursuant to FIFRA Section 6(a)(1), EPA hereby issues an existing stocks order for XtendiMax® with VaporGrip® Technology (EPA Reg. No. 264-1210), Engenia® Herbicide (EPA Reg. No. 7969-472), and A21472 Plus VaporGrip® Technology (Tavium® Plus VaporGrip® Technology) (EPA Reg. No. 100-1623). This order will remain in effect unless or until subsequent action is taken. The issuance of this order did not follow a public hearing. This is a final agency action, judicially reviewable under FIFRA § 16(a) (7 U.S.C. §136n). Any sale, distribution, or use of existing stocks of these products inconsistent with this order is prohibited.
  2. Existing Stocks. For purposes of this order, “existing stocks” means those stocks of previously registered pesticide products that are currently in the United States and were packaged, labeled, and released for shipment prior to February 6, 2024 (the effective date of the District of Arizona’s vacatur of the dicamba registrations). Pursuant to FIFRA section 6(a)(1), this order includes the following existing stocks provisions:

Continue reading

Weekly Commodity Market Update

Brownfield’s Weekly Commodity update featuring former OSU Extension Ag Economist Ben Brown.

This Week’s Topics:

  • Market recap
  • Penciling out profit
  • South American production
  • South American second crop planting
  • Managing production cost
  • Corn acreage to fall
  • Reports to watch

This week Will and Ben look at falling crop prices across the board and what it’ll take to stabilize.

Market recap (Changes on week as of Monday’s close):

  • March 2024 corn down $0.05 at $4.40
  • December 2024 corn down $.01 $4.74
  • March 2024 soybeans down $.29 at $11.94
  •  November 2024 soybeans down $.17 at $11.80
  • March soybean oil down 2.61 cents at 45.55 cents/lb
    – March soybean meal down $1.50 at $354.30/short ton
  • March 2024 wheat down $.06 at $5.93
  • July 2024 wheat down $.03 at $6.09
  • March WTI Crude Oil up $2.13 at $76.78/barrel

Weekly Highlights

  • US Gross Domestic Product grew 3.3% in the fourth quarter of 2023- down from the 4.9% in the third quarter but well above the 2% growth expected. Taking out the sharp recovery after the pandemic in 2020. The 3rd and 4th quarters are the strongest two quarters back-to-back since 2014.
  • Core Inflation at 0.2 month over month was right inline with expectations and core inflation year over year of 2.6% was as expected.
  • The housing market continues to run hot- with New home sales at 664,000 up from last month and expectations and pending home sales up to a huge number of 8.3% in December- the largest number since June 2020.
  • It was another fairly risky week for US commodities. Open interest positions increased across the board for Chicago wheat (2.7%), Corn (5.7%), soybeans (6.5%), soybean oil (3.7%), soybean meal (3.4%), cotton (10.7%), and rough rice (0.4%).
  • Producers and Merchants increased their net positions of corn adding to the small net long while also adding net positions of soybeans shrinking their small net short. Producers and Merchants sold off net wheat contracts adding to the net short in Chicago wheat.
  • Managed money traders sold off another 4,743 contracts of Chicago corn while selling 15,045 contracts of soybeans to increase the net short there as well. Managed accounts added 26,518 contracts of cotton futures to take the small net short into a net long.
  • US crude oil stocks excluding the strategic petroleum reserve were down another 388 million gallons while gasoline stocks increased 206 million gallons on a 5% week over week reduction in gasoline demand.
  • As expected, US ethanol production pulled back to 240 million gallons- down from 310 million gallons the week prior due to the cold snap in the US. Even with the drastic drop in ethanol production-ethanol stocks increased due to the drop in gasoline demand and blending.
  • Exports sales were lower this week nearly across the board and bearish for soybeans. Only SRW wheat posted week over week gains.
  • Weekly grain and oilseed export inspections for the week were neutral for corn and soybeans, while bearish for wheats and grain sorghum. Corn, HRW and HRS wheats were the only commodities up week over week.