Soybean plants are seen in a field affected by the drought in Campo 9, Caaguazu city, 250 km (155 miles) south of Asuncion December 20, 2011. Paraguay's export chamber said on Tuesday that the country's 2011/12 soy production could fall as much as 40 percent compared with the previous season's crop, if La Nina-related dryness continues. Picture taken December 20, 2011. REUTERS/Stringer (PARAGUAY - Tags: AGRICULTURE BUSINESS EMPLOYMENT)