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- Naomi Blohm, TotalFarmMarketing.com- John Deere Updates Right to Report & DEF- Gerald Mashange, University of Illinois- Don Day, DayWeather.comThe April 7, 2026 Closing Market Report highlights significant concerns regarding geopolitical tensions with Iran and their impact on agricultural commodities. Total Farm Marketing's Naomi Blohm notes that traders are squaring positions ahead of an impending deadline with Iran, closely watching crude oil resistance levels. University of Illinois agricultural economist Gerald Mashange elaborates on this "escalation trap" in the Strait of Hormuz, warning that damage to energy and fertilizer infrastructure could cause prolonged supply chain disruptions and price spikes akin to the Russian invasion of Ukraine.In agricultural news, John Deere announced software updates complying with new Environmental Protection Agency guidelines to allow farmers temporary overrides on emissions and diesel exhaust fluid equipment during critical operational windows. On the weather fro