Deere Earnings Jump, Raises 2004 Forecast  CHICAGO (Reuters) - Deere   Co. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=DE.N target=/stocks/quickinfo/fullquote"&gt;DE.N&lt;/A&gt;, one of the world's  largest farm equipment makers, on Tuesday said quarterly  earnings jumped sharply, driven in part by strength in its  agricultural and construction equipment businesses.