GRAINS-U.S. wheat extends gains on threat from dry, chilly weather
* Weather forecasts suggest southern U.S. Plains to stay dry
* Soybeans follow soyoil higher
* Corn edges up, market mulls end to China stockpiling
* Trading subdued in run-up to USDA planting report (Adds analyst comment, U.S. trading)
By Rod Nickel and Gus Trompiz
WINNIPEG, Manitoba/PARIS, March 29 (Reuters) - Chicago wheat climbed on Tuesday to add to sharp gains a day earlier as the market assessed the risk of yield losses to U.S. crops due to a combination of dry and cold weather.
Corn was slightly higher, with traders digesting news that China is to scrap its stockpiling scheme for the grain, a move that could curb imports.
Soybeans also gained, with many investors looking ahead to Thursday's U.S. planting and stocks estimates from the U.S. Department of Agriculture (USDA).
The most-active May wheat contract on the Chicago Board of Trade rose 3-3/4 cents or 0.8 percent to $4.74-3/4 a bushel at 10:20 a.m. CDT (1520 GMT), after closing up 1.7 percent on Monday when prices hit a two-week high of $4.77-1/4. Continuación...