Business and Finance
STOCK PRICES plunged amid concern about interest rates and the economy. The Dow Jones industrials fell a record 41.91 points, to 1783.98. Meanwhile, agriculture futures prices soared on speculation that the Soviet nuclear accident would damage an important Russian farming region.</br></br>The dollar rose, partly on speculation that the disaster will boost Soviet purchases of U.S. grain. West Germany signaled plans to intervene further to support the dollar.</br></br>---</br></br>Bond prices tumbled, ending a three-day rally. Prices fell as the Treasury unveiled plans to sell $27 billion of bonds and notes next week, more than analysts had expected.</br></br>---