RESEARCH BULLETIN OF KAOHSIUNG DISTRICT AGRICULTURAL IMPROVEMENT STATION
Volume 13, Number 1 December, 2001

Diseases survey and integrated control of diseases on forcing culture
on wax-apple fruit trees

Chi-Chien Lan ¹

Abstract

　Wax-apple (Syzygium samarangese Marr. et Perry) is an economically important fruit tree in southern part of Taiwan, a total planted, area is about 8,636 ha. And a total fruit production is about 105,005 tons per year. During the last several years, farmers have developed a wonderful culture technigue called forcing culture. By using this kind of practise, not only the fruit yield increase and also show best
fruit quality. This study has been conducted during the last three years in order to know the disease occurrence of wax-apple under the so-called forcing culture practice and control measures were tested under field conditions. Results indicated that seven major diseases have been found, i. e. anthracnose (Colletotrichum gloeosporiodies), black rot (Botryodiplodia theobromae), Phytophthora fruit rot(Phytophthora palmivora), fruit rot(Pestalotiopsis euginae), algal spot(Cephaleuros virescens), sooty mold (Capnodium sp.), and soft rot (Rhizopus stolonifer)(see table1). Fungicidal spray in field
conditions showed effective control(see table 3-5). An integrated control measure is suggested that one application of fungicidal spray during young fruit stage followed by bagging with silica gel showed
90% effective against diseases.

Key words: Wax-apple, Diseases, Integrated control

1.Assistant of Kaohsiung District Agricultural Improvement Station