July 30 (Reuters) - Global grain trader

Archer-Daniels-Midland ( ADM ) missed second-quarter profit

estimates on Tuesday, hurt by lower crush margins and demand.

Global grain and oilseed supplies that companies like ADM

trade and process have surged, and prices have slumped to nearly

four-year lows.

In the United States, farmers have been sitting on

larger-than-normal volume of stocks as export demand for

new-crop supplies have been sluggish, and China has been turning

to South America for much of its soybean needs.

Quarterly adjusted operating profit from ADM's Ag

services & oilseeds segment, its biggest by profit, slumped 56%

to $459 million from a year ago.

"In Ag Services & Oilseeds, while large South American

crops and shifts in farmer selling behaviors impacted results in

the second quarter, we expect improved margin opportunities

through the remainder of the year," CEO Juan Luciano said in a

statement.

The company reported an adjusted profit of $1.03 per share

for the quarter ended June 30, compared with analysts' average

estimate of $1.22 per share, according to LSEG data.