A CASE STUDY ON CEREAL-LEGUME FALLOW ROTATION AND COFFEE-BASED AGROECOSYSTEM IN LAMPUNG, INDONESIA

Observations were done in coffee fields in Sumberjaya area (West Lampung) and long-term corn-legume rotation plots in Natar area (South Lampung). Soil arthropods (from pitfall trap or Winkler), nematodes (from soil core), and earthworms (from monolith) in both areas were inventoried during July 2009 - January 2010. Coffee fields with more diverse shade trees and less (no) tillaged corn plots were in this study considered as more sustainable agroecosystems. Thicker litter and higher net present value (NPV) were evident in complex shade coffee but shading did not affect earthworm abundance, arthropod abundance, and coffee yield. High nematode abundance was found in simple shade coffee and not found in either no shade or complex shade coffee fields. Acari abundance in no tillage plots was higher, but tillage did not affect overall arthropod diversity and corn yield.