CBOT Trends-Wheat up 1-6 cents, corn and soybeans up 1-4 cents

CHICAGO, May 19 (Reuters) - The following are U.S. expectations for the resumption of grain and soy complex trading at the Chicago Board of Trade at 8:30 a.m. CDT (1330 GMT) on Monday.

WHEAT - Up 1 to 6 cents per bushel

* CBOT wheat futures higher for the fourth time in five sessions, supported by a weaker dollar which makes U.S. wheat more competitive in export markets.

* South Korean millers bought about 50,000 metric tons of U.S. wheat in a tender on Monday.

* Saudi Arabia bought 621,000 metric tons of optional-origin wheat via a tender for arrival in August to October.

* CBOT July soft red winter wheat WN25 was last up 5-3/4 cents at $5.30-3/4 per bushel. K.C. July hard red winter wheat KWN25 was last up 8-1/4 cents at $5.24-3/4 a bushel, while Minneapolis July spring wheat MWEN25 was last up 4-1/2 cents at $5.77-3/4 a bushel.

CORN - Up 1 to 4 cents per bushel

* Corn futures higher in a technical and short covering rebound, supported by a weaker U.S. dollar. Favorable Midwest crop conditions capping gains as recently planted corn fields are due to receive ample rain through midweek.

* CBOT July corn CN25 was last up 3-3/4 cents at $4.47-1/4 per bushel.

SOYBEANS - Up 1 to 4 cents per bushel

* Soybeans firm on short covering and technical buying following two sessions of losses. Gains capped by recent favorable U.S. Midwest weather that boosted soybean planting ahead of rains this week.

* Actively traded July soybeans SN25 held technical chart support at the 100- and 200-day moving averages during overnight trading.

* CBOT July soybeans SN25 were last up 3-3/4 cents at $10.53-3/4 per bushel.