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In Indonesia, annual growth rates for cassava production and yield from 1961 to 2000 were 0.81% and 1.35%, respectively. However, the harvested area decreased at an average annual rate of 0.61%. The average yield of about 12 tonnes of fresh roots/ha is much below the potential yield of 20 to 40 t...


Wargiono, J.Widodo, YudiUtomo, Wani Hadi[Cassava agronomy research and adoption of improved practices in Indonesia: Major achievements during the past 20 years]Cassava agronomy research and adoption of improved practices in Indonesia: Major achievements during the past 20 years

Soil degradation, both due to soil erosion and nutrient removal, is a major problem in cassava fields. Most of the existing management technologies that have been developed have had little success in adoption. Some of the reasons are that the technology developed is technically oriented, based on...


Utomo, Wani HadiSuyamto, H.Santoso, H.Sinaga, A.[Farmer participatory research in soil management in Indonesia]Farmer participatory research in soil management in Indonesia

A Farmer Participatory Research (FPR) approach has been used in two pilot sites located in Malang and Blitar districts of East Java. The objective of the work, which was executed since l994, was to enchance the development and adoption of efficient cassava production technologies that are able to...


Utomo, Wani HadiSuyantoSinaga, Aldon[Implementation of farmer participatory research (FPR) in the transfer of cassava technologies in Indonesia]Implementation of farmer participatory research (FPR) in the transfer of cassava technologies in Indonesia

Howeler, Reinhardt H.Tongglum, AnuchitJantawat, SUtomo, Wani Hadi[The use of forages of soil fertility maintenance and erosion control in cassava in Asia]The use of forages of soil fertility maintenance and erosion control in cassava in Asia

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