After pulling up from a swath run, the engine lost power. The pilot then made a forced landing in a blue berry field. Postaccident investigation revealed a failed connecting rod in the engine. The engine had accumulated 1,900 hours since the last overhaul. The manufacturer's recommended interval for overhaul was 1,200 hours. The company owner said that he knew the engine was going to need an overhaul; however, he hoped that it would last until the aerial application season was over.