USDA cuts good-to-excellent ratings for corn, soybeans.

Prices reach 12-year high as market eyes El Niño.

Farmers surveyed concerned about weaking grain prices.

Concern about grain supplies grows with escalation of war with Russia.

Farmers express less pessimism about interest rates.

Pessimism stems from rising interest rates, declining prices for crops.

Risk of falling output prices, rising interest rates weighing on producers.

Move reflects ideas Black Sea agreement will renew.

Analysts share insights on grain and oilseeds markets.

Corn to lowest levels in six months.