CANBERRA, April 30 (Reuters) - U.S. corn futures edged up on Friday, as concerns about global supplies pushed prices towards their biggest monthly gain in more than two years.

FUNDAMENTALS

* The most-active corn futures on the Chicago Board of Trade were up 0.2% at $6.49-3/4 a bushel by 0150 GMT, having closed up 0.7% lower on Thursday.

* Corn up 15% during April, the biggest monthly gain since May 2019.

* Corn hit a near 8-year high of $6.84 a bushel earlier in the week.

* Soybean futures up nearly 5% for the month, their 11th straight monthly gain.

* Wheat futures up nearly 19% for the month, their biggest monthly gain since June 2017.

* Corn export sales totalled 1.075 million tonnes in the week ended April 22, the U.S. Department of Agriculture said, in line with analysts' forecasts of 500,000 tonnes to 1.6 million tonnes.

* Soybean export sales totaled 731,500 tonnes, topping forecasts ranging from 100,000 to 700,000 tonnes.

* Southern Brazil is forecast to stay dry into early May, but an expected warming of temperatures along with showers in the U.S. Midwest could help planting and early crop development.

MARKET NEWS

* The U.S. dollar skidded toward a fourth straight weekly decline against a basket of major peers, as the Federal Reserve stuck to its message of ultra-low interest rates for longer.

* Oil prices slipped, taking a breather after touching their highest in six weeks as economic recovery and bullish summer fuel demand outlook outweighed concerns of wider lockdowns in India and Brazil to curb COVID-19 pandemic.

* World share indices extended gains and Treasury yields rose on Thursday, after strong U.S. economic data and the Federal Reserve's commitment to continue supporting the economy fueled confidence in a recovery. (Reporting by Colin Packham; Editing by Rashmi Aich)