Problems of Pests and Diseases on “Liberika Tungkal Komposit” Coffee in Peatlands, Jambi Province

Abstract

Coffee of Liberika Tungkal Komposit (Libtukom) is a superior commodity that adapts well to the peatlands in West Tanjung Jabung Regency, Jambi Province. Libtukom coffee, which has a distinctive flavor, is the main source of income for the community in Tanjung Jabung Barat Regency. The problems in the cultivation of Libtukom coffee include pests and diseases. This study aimed to provide information on the type of pests and diseases that attack Libtukom coffee. The study was conducted in March-September 2017. Data were obtained from direct observation (primary data) and other sources (secondary data). Data were analyzed descriptively. The results showed that some of the pests that attack Libtukom Coffee were coffee fruit borer, white lice, and stem borer, with intensity of mild-moderate attacks. Diseases that can infect leaves Libtukom Coffee were mainly (rust and red rust) and roots (root fungi). White root fungus attack is the main problem of Libtukom coffee in peatland, Jambi Province. Farmers generally recognize the root fungus infection, which was already found in more than 30% of the plant population.

Liberica coffee as an alternative cropping system for sustainable farming on Indonesian Peatlands

“…The LA was determined manually by measuring the length (L) and width (W) of the 4th leaf from each productive branch represented by four branches, taken crosswise according to the four cardinal directions of each observed tree. Calculating the individual LA of the liberica coffee was by a single power model proposed by Antunes et al [27] namely . The disease infection frequency was recorded by counting the number of the leaves infected by rust (Hemileia vastatrix Berk) and or spots (Cercospora coffeicola Berk.…”

The study of control Hypothenemus hampei on Libtukom coffee

“…The number of trapped insects is calculated monthly until the end of the study. The observation of the intensity of the CBB attack was carried out by calculating the percentage of fruits infested on all fruits of each productive branch, with the formula: I=(Bb/Bt)*100%, in this case, I = the intensity of the attack; Bb = fruit affected by CBB/branch; and Bt total number of fruits/branch [11]. The intensity of fruit attacks is observed at the beginning and end of the study.…”

“…Damage caused by H. hampei can reduce production by up to 10-40% [9] [10]. Coffee berry borer, white lice, and stem borer can attack Libtukom coffee with the intensity of mild-moderate attacks [11], and the intensity of H. hampei attacks on Libtukom coffee in Betara district, Tanjung Jabung Barat regency reached 10.33% [9].…”

Can nonlinear agrometeorological models estimate coffee foliation?

“…Defoliation reduces plant photosynthetic rate due to a reduction in leaf area, besides negatively affecting the transpiration and respiration processes of the plant, causing damage to crop development 16,17 . In general, defoliation occurs naturally in coffee at non‐harmful levels, but the attack of pests such as coffee leaf miner ( Leucoptera coffeella ) and diseases such as coffee leaf rust ( Hemileia vastatrix ) and Cercospora leaf spot ( Cercospora coffeicola ) are most harmful 18,19 …”

“…16,17 In general, defoliation occurs naturally in coffee at non-harmful levels, but the attack of pests such as coffee leaf miner (Leucoptera coffeella) and diseases such as coffee leaf rust (Hemileia vastatrix) and Cercospora leaf spot (Cercospora coffeicola) are most harmful. 18,19 The main coffee pests and diseases attack its leaves, being harmful to its full development. 20,21 The intensity of pests and diseases on plants is directly associated with regional climate conditions, 22,23 mainly air temperature.…”