--- title: 'Agriculture Daily Summary: What Happened on November 7, 2026' headline: Herbicide mixes can weaken grass control, Extension specialists warn description: Coromandel grew sales despite fertilizer margin pressure, while grower purchasing and farm-data tools featured in industry discussions. url: https://thebench.bio/news/agriculture/2026-11-07 topic: agriculture date: '2026-11-07' covers: - '2026-11-06' - '2026-11-07' date_published: '2026-11-08T00:02:46Z' date_modified: '2026-11-08T00:02:46Z' tags: - Agriculture sources: 4 publisher: TheBench.Bio --- # Agriculture Daily Summary: What Happened on November 7, 2026 **Herbicide mixes can weaken grass control, Extension specialists warn** Coromandel grew sales despite fertilizer margin pressure, while grower purchasing and farm-data tools featured in industry discussions. ## Today in brief University Extension weed specialists urged farmers to separate some herbicide applications because tank mixes can reduce weed control. [1] Coromandel International grew revenue in the quarter and first half ended September 30, while higher raw-material costs pressured fertilizer margins. [2] ## Some herbicide tank mixes reduce grass control Herbicide antagonism occurs when mixing products reduces weed control compared with applying each herbicide alone. [1] Eric Prostko and Charlie Cahoon recommend researching a mix before using it or separating postemergence grass and broadleaf herbicide applications. [1] Prostko said mixing 2,4-DB with clethodim can reduce grass control by 8% to 15% about half the time. Combining clethodim with imazapic can reduce control by 10% to 25%. [1] Prostko advises treating weeds before they exceed four inches where possible. He recommends waiting three days after a grass herbicide before applying a broadleaf herbicide, or five to seven days before applying a grass herbicide after a broadleaf treatment. [1] The specialists said raising the grass-herbicide rate within its labeled range may sometimes help, but it is unreliable, especially on large grasses. [1] They said antagonism could theoretically contribute to herbicide resistance, but more research is needed to understand the mechanisms and risks. [1] ## Coromandel sales rose as fertilizer margins narrowed Coromandel International's revenue rose 6% in the quarter and 10% in the first half ended September 30, 2026. EBITDA fell, largely because higher raw-material costs pressured fertilizer margins. [2] Crop Protection revenue increased 22% in the quarter, which the company attributed to export performance. [2] Coromandel supplied about 3.3 million tons of fertilizer in the first half and said its phosphatic-market share reached 19%, up from 17% a year earlier. [2] Chief executive S. Sankarasubramanian said a new phosphoric- and sulfuric-acid plant in Kakinada helped offset external supply disruptions. [2] The company expects its new NPK fertilizer capacity to be completed in the fourth quarter of fiscal 2027. Additional capacity for a crop-protection molecule is expected to start operating in the third quarter. [2] Coromandel plans a launch plant for fluoro intermediates. It opened nearly 100 stores during the quarter, bringing its retail network to more than 1,300. [2] ## Also worth knowing - The Mill's Ben Hushon said growers in his Mid-Atlantic region had delayed purchasing decisions despite strong 2026 yields and low local potash prices. He predicted many would have good cash for 2027. [3] - Hushon said The Mill is using AI to connect farm technology platforms and expects to offer related capabilities in 2027, with staff overseeing the outputs. [3] - Nicolas Potrie of Tafirel discussed the Mercosur-EU agreement's potential effects on agricultural input markets. [4] ## The day in numbers - **8% to 15%**: Reported reduction in grass control from mixing 2,4-DB with clethodim, about half the time. [1] - **19%**: Coromandel's phosphatic-market share in the first half, compared with 17% a year earlier. [2] ## Sources 1. [Think Through Your Tank Mix: How to Avoid Herbicide Antagonism](), CropLife, 2026-11-07 2. [Coromandel Posts Revenue Growth Amid Margin Pressures, Advances Strategic Expansion](), AgriBusiness Global, 2026-11-06 3. [CropLife Retail Week: Dealing with Grower Decision Paralysis, 2027 Fertilizer Sale Strategies, and Making Data Work for You](), CropLife, 2026-11-06 4. [AgriBusiness Global Report: How the Mercosur-EU Agreement Reshapes the Agribusiness Market](), AgriBusiness Global, 2026-11-06 --- TheBench.Bio wrote this from the reporting cited above, with a language model drafting and editing. [1]: [2]: [3]: [4]: