1990 Supplement Publications of the International ... - IRRI books

additional pests, and the six pests documented were chosen following
recommendations made at Plant Protection meetings held in
Apia in 1986 and Noumea in 1987. Dossiers in the Supplement follow
closely the format adopted in Biological Control: Pacific Prospects,
whereby each pest is discussed in relation to biological and ecological
information pertinent to successful biological control. The information
presented emphasises the southwest Pacific region and
discussion is intended to have relevance to that region’s traditional
and other agriculturists.
E.T. Craswell and E. Pushparajah
Management of acid soils in the humid tropics of Asia.
AClAR Monograph No. 13 (IBSRAM Monograph No. 1)
1989. x + 118 p. Price $25.00 (including postage and handling).
This is a joint publication of AClAR and the International Board for Soil
Research and Management (IBSRAM). It stems from a workshop
held in Kuala Lumpur in early 1989. The papers cover the current
research on the management of the acid infertile soils -the Oxisols
and Ultisols - which dominate the humid tropics of Asia. There are
also descriptions of the technological solutions emerging from
research into problems of acid soils, and of the ASIALAND-Management
of Acid Soils Network initiated at the workshop to foster a more
cohesive approach to solving the difficulties facing smallholders in
Asia.
Technical reports
J.R. Freney, J.R. Simpson, Zhu Zhao-Liang, and Aziz Bidin
Gaseous nitrogen loss from urea fertilizers in Asian
cropping systems. AClAR Technical Reports No. 9
1989. 16 p. Price $A9.50 (including postage and handling).
Nitrogen supply is a major yield constraint to food crops in Asia,
especially for rice. Urea is used extensively as a nitrogen fertilizer on
rice paddies, but the method of application can lead to nitrogen
losses of 30-90 per cent. An AClAR project to address this problem
involved linking scientists from the CSlRO Division of Plant Industry
in Australia with their counterparts at research institutes in China and
Malaysia. This technical report outlines the work done and the results
obtained.
AClAR 321