HARIYONO, HARIYONO
(2014)
INVENTARISASI HAMA DAN PENYAKIT KAKAO (Theobroma cacao L.) DAN TINGKAT SERANGANNYA DI KOTA SAWAHLUNTO.
Other thesis, Fakultas Pertanian.
Abstract
ABSTRACT
Inventory of pests and diseases and their damage on cocoa plants was conducted in Sawahlunto City. The objectives of this study were to determine the species of pests and pathogens that caused diseases and their damage on cocoa plants. A survey was conducted by using purposive random sampling method. The width of areas sampled were ± 0,5 ha and plant ages were 5 years and had produced fruits. Species of pests found attacking cocoa plants were 1) Helopeltis spp. with the percentage of infected plants 23,23%, and damage intensity 10.73%. 2) Squirrel with percentage of infected plant 16,78%. 3) Conopomorpha cramerella with percentage of infected plants 1,45% 4) Zeuzera sp with the percentage of infected plant 1.05%. Species of plant pathogens found were 1) Phythoptora palmivora as a cause of fruit rot with the percentage of infected plants 5,72% and damage intensity 2,97% 2) Colletotrichum gloeosporioides as a cause of antraknose with the percentage of infected plants 4,39% and damage intensity 3,29% 3) Corticium salmonicolor with the percentage of infected plants 4,25% 4) Phytopthora palmivora as a cause of stem cancer on cocoa plants with the percentage of infected plants 0,84%. The dominant species of pest was Helopeltis spp. and dominant pathogen was Phythoptora palmivora.
Keywords : Cocoa , Pests and Diseases
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