Improvement of Field System for Forage and Food Crop Production in Seasonal Drought-prone Area of Indonesia : I. Availability of three strata forage system

[摘要] In agricultural farming at Bukit Peninsula, Bali, Indonesia, cattle production has an important position as well as food crop production. However, the farmers very often experience shortage of forage for feeding Bali cattle because of seasonal drought. In order to solve this problem, Three Strata Forage System (TSFS) had been developed through the improvement of the traditional farming system (non-Three strata Forage System: NTFS) from the viewpoint of field system and selection of plant materials. In a TSFS-field, trees, shrubs, grasses and legumes were grown in the peripheral part and food crops were mixed-cropped in the inner part of the field while trees were grown only as a fence to protect food crops from animals in a NTFS-field. In this paper, the availability of TSFS for forage and food crop production was studied. Though food-crop yield of a TSFS-field was 35% lower than that of a NTFS-field, forage yield was 96% higher, so that forage was available all the year round in a TSFS-field. Furthermore, the weight of a cattle on TSFS-field increased at almost the same rate as a cattle on NTFS-field even with about 10% less forages. Consequently, the net income from the TSFS-field was 24% more than that from the NTFS field. These results indicate that TSFS is more useful and profitable as a field system in seasonal drought-prone area of Indonesia.

[学科分类] 农业科学（综合）

[关键词] Dry Farming;インドネシア;Field System;乾燥地農業;Forage Production;飼料生産;Indonesia;圃場生産様式;Three Strata Forage System