MIXED PLANTING WITH RHIZOMATOUS PLANTS INTERFERES WITH Ganoderma DISEASE IN OIL PALM

Suwandi, Suwandi

doi:10.21894/jopr.2022.0043

Cited by 3 publications

(12 citation statements)

References 24 publications

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“…has a wide range of woody plants in the field (Loyd et al, 2018), but under artificial inoculation, the fungus could also infect herbaceous plants such as rhizomatous plants. The severe disease also has been recorded on inoculated galangal (Suwandi et al, 2022). Under mixed cropping, a single mycelium network of Ganoderma caused simultaneous infection (multiple hostspecies infections) on both oil palm and water yam.…”

Section: Discussionmentioning

confidence: 95%

Effect of mixed cropping of water yam (Dioscorea alata) on Ganoderma disease of oil palm

Fadli

Suwandi²,

Nurhayati³

et al. 2023

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Basal stem rot caused by a soil-borne fungus, Ganoderma boninense, is one of the most severe diseases in monoculture oil palm plantations. The effect of mixed cropping with water yam on infection and inoculum potential of Ganoderma boninense on oil palm seedlings was assessed under a pot experiment. Plant inoculation with rubber woodblock (RWB)-colonized Ganoderma induced disease on both mixed cropped hosts (multiple host infection), but with less severe root necrotic and less plant mortality relative to inoculation on a single oil palm host. Inoculum potential of the pathogen was reduced under mixed cropping, as shown by more considerable RWB decay than a single host, and the fungal survival was suppressed to be 55% for 12 months trial. Water yam mixed cropping did not interfere with the growth of the inoculated oil palm seedling. This study revealed the multiple host infection under mixed cropping with water yam suppressed damage caused by Ganoderma boninense to oil palm as the primary host.

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Section: Discussionmentioning

confidence: 95%

Effect of mixed cropping of water yam (Dioscorea alata) on Ganoderma disease of oil palm

Fadli

Suwandi²,

Nurhayati³

et al. 2023

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“…Ganoderma boninense strains used in this study were obtained from oil palm Ganoderma infected diseased in West Sumatra (Gb-A) and South Sumatra (Gb-B). Both strains had been identified based on morphology and the ITS sequences (Ayundra, 2022;Suwandi et al, 2022). The two strains were somatically incompatible, indicated by a demarcation line between paired colonies in a Petri plate (Figure 1) as tested following Castillo et al (2022).…”

Section: Pathogen Strains and Inoculamentioning

confidence: 99%

“…The two strains were somatically incompatible, indicated by a demarcation line between paired colonies in a Petri plate (Figure 1) as tested following Castillo et al (2022). Rubber wood blocks (RWB) as an inoculum medium for G. boninense were prepared according to Suwandi et al (2022).…”

Section: Pathogen Strains and Inoculamentioning

confidence: 99%

“…Each replication consisted of one oil palm seedling. Infection was performed by inoculating and binding the primary roots of 3-month-old oil palm seedlings using a parafilm to one RWB for a single infection treatment (Suwandi et al, 2022). In the multiple infection treatment, one seedling was tied with two half-sized RWBs of each Gb-A and Gb-B RWB.…”

Section: Short Communicationmentioning

confidence: 99%

“…The incidence of basal stem rot symptomatic plant was calculated 7 months after inoculation as the number of symptomatic out of 15 inoculated plants multiplied by 100. Disease severity was observed every two months for seven months and measured using a severity score of 0−5 (0: healthy plant; 1: early symptoms on the first leaf; 2: first leaf died; 3: first two leaves died; 4: more than three first leaves died; and 5: total dead plants) (Suwandi et al, 2022). Root colonization by G. boninense was assessed following the procedure of Rees et al…”

Section: Ganoderma Disease Parametersmentioning

confidence: 99%

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Co-infection of two Ganoderma boninense strains on oil palm seedlings

2022

Self Cite

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Ganoderma boninense is the basal stem rot disease (BSR) pathogen that devastates oil palm plantations. Disease infection generally occurs by a single strain of G. boninense, or co-infection of two strains arises as revealed by somatic incompatibility. This study aimed to determine the effects of co-infection of two somatically incompatible G. boninense strains on the BSR disease of oil palm seedlings. Two strains of G. boninense were from 2 oil palm plantations and had different aggressiveness. Co-infection of two G. boninense strains was performed by inoculating the Ganoderma rubber wood blocks to the 3-month-old oil palm seedling and examined for 7 months. The results showed that co-infection with two G. boninense strains had similar disease symptoms, decreased disease severity (score 1.5 compared to 2.0 for a single aggressive strain), and similar seedling growth retardation by the single aggressive strain. Higher fungal colonization (92%) of oil palm roots was exhibited in the co-infection compared to 85‒86% colonization of a single strain infection. This study revealed that co-infection with two somatically incompatible strains might favor host colonization by G. boninense.

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The suppression of Ganoderma boninense on oil palm under mixed planting with taro plants

SUWANDI,

ALESIA,

MUNANDAR

et al. 2024

Biodiversitas

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Abstract. Suwandi S, Alesia M, Munandar RP, Fadli R, Suparman S, Irsan C, Muslim A. 2024. The suppression of Ganoderma boninense on oil palm under mixed planting with taro plants. Biodiversitas 25: 1143-1150. Basal stem rot, caused by Ganoderma boninense, is highly destructive in monoculture oil palm plantations. This study evaluated Ganoderma boninense infections and oil palm growth in mixed plantings of oil palm seedlings and taro plants (Japanese, Bogor, and Indralaya taro). Ganoderma, colonizing rubber wood blocks, was inoculated into mixed plants, and the infection was compared to single-inoculated oil palm and taro plants. The interference of mixed planting with taro plants on the growth of oil palm seedlings was compared between inoculated and noninoculated mixed and single planting. Ganoderma inoculation caused simultaneous disease (dual-host infection) in mixed oil palm and taro plants. Ganoderma infection was less severe in taro plants compared to oil palm, whether in single or mixed planting. Over six months, oil palm root necrosis and disease index were reduced by 82% to 96% and 65% to 71%, respectively, while no significant effect was observed at nine months. The decay of Ganoderma-colonized wood improved by 44.1% to 84.0% in mixed planting, with no significant impact on mycelium viability. Taro plants did not inhibit oil palm growth, including plant height, leaf area, and relative growth rate of primary root length, in both the presence and the absence of Ganoderma infection. This study highlights the potential of mixed planting with taro to reduce Ganoderma disease in oil palm.

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MIXED PLANTING WITH RHIZOMATOUS PLANTS INTERFERES WITH Ganoderma DISEASE IN OIL PALM

Cited by 3 publications

References 24 publications

Effect of mixed cropping of water yam (Dioscorea alata) on Ganoderma disease of oil palm

Effect of mixed cropping of water yam (Dioscorea alata) on Ganoderma disease of oil palm

Co-infection of two Ganoderma boninense strains on oil palm seedlings

The suppression of Ganoderma boninense on oil palm under mixed planting with taro plants

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