Working with farmers : The key to adoption of vetiver grass hedgerows to control erosion in cassava in fields in Thailand - Howeler, Reinhardt H.; Watananonta, Watana; Vongkasem, Wilawan; Klakhaeng, Kaival I.; Jantawat, S; Randaway, S; Vankaew, B (International Center for Tropical Agriculture, 2004)