Recasts, updates prices, adds background

By Sybille de La Hamaide and Michael Hogan

PARIS, July 15 (Reuters) - Chicago wheat prices jumped more than 3% while European wheat reached a one-year high on Wednesday, amid escalating shipping attacks in the Sea of Azov, a major export route for Russian wheat.

Corn and soybeans followed through, recouping some losses from the previous session, as market participants continued to monitor hot and dry weather conditions in U.S. fields.

The most-active wheat contract Wv1 on the Chicago Board of Trade (CBOT) was up 3.3% at $6.6 a bushel by 1003 GMT.

Euronext wheat futures jumped in morning trade to more than one-year highs, with benchmark September BL2U6 trading 5.6% higher at €228.5 ($260.86) per ton.

"There is growing market concern that Ukrainian drone attacks on Russian shipping in the Azov Sea are increasing, which could cut Russian wheat exports and transfer demand to the EU," a German trader said. "The Ukrainian attacks show no sign of letting up."

Russia accused Ukraine of terrorism over its increasing attacks on shipping in the Sea of Azov, the route for a quarter of Russia's grain exports.

"Fear is also that Russia will retaliate with attacks on Ukrainian grain export ports, which have hardly been touched throughout the war but were hit on Wednesday."

Industry sources, who spoke on condition of anonymity because of the sensitivity of the matter, told Reuters that several grain ships were hit in the Sea of Azov on July 13 and July 14 and caught fire.

Russia is the world's largest wheat exporter.

Corn Cv1 gained 1.25% to $4.66-1/4 a bushel while soybean Sv1 was up 0.5% at $11.97-1/4 a bushel.

Condition ratings for U.S. corn and soybean crops improved slightly last week, the USDA said in a weekly report on Monday.

The agency said 68% of the nation's corn crop was in good to excellent shape as of Sunday, up from 67% a week earlier. The soybean crop was rated 65% good to excellent, up from 64% a week earlier.

However, temperatures are expected to remain high this week and peak between 95 and 100 degrees Fahrenheit (35 to 38 degrees Celsius), the USDA said in a daily weather note.

China's soybean imports rose to 13.55 million metric tons last month, a record high for June, up 10.5% from a year earlier and up 14.9% from May.

Prices at 1013 GMT
	Last	Change	Pct Move
CBOT wheat Wv1	666.00	21.00	3.26
CBOT corn Cv1	466.50	6.00	1.30
CBOT soy Sv1	1198.00	7.00	0.59
Paris wheat BL2U6	228.75	12.25	5.66
Paris maize EMAc1	247.25	7.25	3.02
Paris rapeseed COMc1	538.50	16.00	3.06
Euro/dlr EUR=	1.14	0.000	-0.04
Most active contracts - Wheat, corn and soy US cents/bushel, Paris futures in euros per ton