Pengaruh Tanaman Semusim Terhadap Pertumbuhan Jati (Tectona grandis L.) Serta Kesuburan Tanah Pada Sistem Tanaman Tumpangsari Di Wanagama I*)

ABSTRACT To investigate the ecology of tumpangsari system practised in Java, teak (Teclona grandis L.) was grown in 1986 at Compartment 17, Wanagama I, Yogyakarta, along with rice (Oryza sativa L.), corn (Zea mays L.), and peanut (Arachis hypogea L.) in plots with and without legume (Acacia glauca L.). Observation during this period showed that the effect of acacia was not significant, similar to that when teak was 4 and 16 month old. The N-total content of the soil increased, but statistically was not significant. The type of crop significantly influenced .the performance of teak, although the difference between teak grown with rice and peanut was not significant. The order of positive companionship of crops on teak was rice, peanut, corn

EARLY GROWTH RESPONSEOF MERANTI SEEDLINGS TO THEIR COMPANION CROPS GROWN UNDER AGROFORESTRY SYSTEM

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Pengaruh tanaman semusim terhadap pertumbuhan jati

To investigate the ecology of tumpangsari system practised in Java, teak (Teclona grandis L.) was grown in 1986 at Compartment 17, Wanagama I, Yogyakarta, along with rice (Oryza sativa L.), corn (Zea mays L.), and peanut (Arachis hypogea L.) in plots with and without legume (Acacia glauca L.). Observation during this period showed that the effect of acacia was not significant, similar to that when teak was 4 and 16 month old. The N-total content of the soil increased, but statistically was not significant. The type of crop significantly influenced .the performance of teak, although the difference between teak grown with rice and peanut was not significant. The order of positive companionship of crops on teak was rice, peanut, corn

VARIASI DAN KARAKTERISTIK MODEL AGROFORESTRI

agroforestri is a new technical term while its practice have been executed byfarmers for a long time. Farmer's responses to the stress of land condition and life needs have urged the creation of local innovation on agroforestri system. Local innovation will change the land use system which has variety of local agroforestri system. The aim of this study were to dig out the information of variation and characteristic of localagroforestri models,find out the supporting factors that emerged the variation models basedon land slope,and discover the information of agroforestri models development. The method of this. research was by surveying and interview. &quo