Pests and Diseases Management of Konjac (Amorphophallus muelleri Blume)

Hardiyanti, Siti; Supriadi, Supriadi; Rahayuningsih, Sri; Yulianti, Titiek

doi:10.17503/agrivita.v44i3.2938

Cited by 3 publications

(5 citation statements)

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“…Rhizoecus species have been known infested elephant foot yam (Amorphophallus paeoniifolius) is R. amorphophalli Betrem [20,21]. Hardiyanti et al [6] reported R. amorphophalli attack the porang tuber in India. They suck cell sap from the elephant foot yam tubers, and the severely infested deformed tubers find no place in market, nor are accepted for cooking [9,17,20].…”

Section: The Symptoms Of Mealybug Infested Porang Tubermentioning

confidence: 99%

“…Since 2019, porang have become prima donna crop in Indonesia. Currently, it has spread almost throughout Indonesia, both under industrial forest plants and in open areas [6]. This rapid increased is mainly caused by the high selling price of tubers, bulbils, and seed wide market, export commodities, easy to cultivate, organic plants, and more resistant to pests and diseases as well [6,19].…”

Section: Introductionmentioning

confidence: 99%

“…In its natural habitat, porang is exposed to minor pests and diseases, such as, Cercopora sp. and Sclerotium rolfsii that can slightly reduce quality of tubers [6,8]. In August 2021, nearly all harvested porang tubers stored in the warehouse of ILETRI field station, Malang were heavily damaged by the insect showing symptoms in the form of white powder on the surface of the infested tubers.…”

Section: Introductionmentioning

confidence: 99%

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New Report of Oriental Mealybug Rhizoecus Amorphophalli Betrem (Hemiptera: Pseudococcidae) in Amorphophallus Muelleri Tubers in Indonesia

Baliadi,

Mejaya,

Soehendi

et al. 2023

BIO Web Conf.

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Since 2020 porang (Amorphophallus muelleri Blume) has been declared as an important commercial crop grown in Indonesia. Recently, porang tubers a coated of a distinct white waxy substance was observed at seed storage. The symptoms pose a threat to tuber vigour quality due to the intensive infestation on stored tubers. This sap- sucking insect sucks the juice leading to desiccation and shrivelling of tubers. This study aims to identify the sap- sucking insect pest attacks the storage porang tubers. The studies carried out at ILETRI. Identification of the caused insect species was done by observing symptoms visually, morphological identification of adult females using Compound microscope Olympus Bx43 in 40 X magnification, and tuber germination and growth of 250 infested tubers in the field. Regarding to the specific symptoms whose soft body coated of a distinct white waxy substance and morphological measurement of the average length of the adult females (862.62±46.3 μm with range between 764 - 904 μm), it’s supposed caused by mealybug in Rhizoecus amorphophalli (Hemiptera:Pseudococcidae). Our founding revealed that R. amorphophalli is first discovered as causal agent of a mealybug pest of porang in Indonesia and turned out to be very detrimental because their infestation caused 90 percent of infested porang tubers unable to germinate and grow.

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Section: The Symptoms Of Mealybug Infested Porang Tubermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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New Report of Oriental Mealybug Rhizoecus Amorphophalli Betrem (Hemiptera: Pseudococcidae) in Amorphophallus Muelleri Tubers in Indonesia

Baliadi,

Mejaya,

Soehendi

et al. 2023

BIO Web Conf.

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“…With increasing demand for alternative food sources and sustainable crop production [8], Porang has garnered renewed attention as a potential candidate for cultivation and exploitation [2]. However, challenges such as long growth cycles, susceptibility to diseases [9], and low genetic diversity have hindered its full-scale adoption and improvement.…”

Section: Introductionmentioning

confidence: 99%

Effects of gamma irradiation on morphological changes in Porang (Amorphophallus muelleri Blume)

Wahyudi,

Belina,

Suyono

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Porang is agricultural plant that become important in the recent years. However, harnessing them through traditional genetic breeding is time-consuming and expensive. Inducing mutagenesis may be a short-time option for its genetic improvement. Therefore, the aim of this reserach is to determine the effect of gamma irradiation in the morphological changes of Porang. This research used completely randomized design (CRD) consisted of 6 levels of radiation including 0 Gray, 2 Gray, 4 Gray, 6 Gray, 8 Gray and 10 Gray. All treatments were replicated 4 times to account for statistical variability. The 30 days after planting of explants were then exposed to varying doses of gamma irradiation using a gamma cobalt-60 at Badan Tenaga Nuklir Nasional (BATAN) Jakarta Indonesia. Porang height, total shoot and leaves, width and length of leaves were characterized after irradiation. Quantitative data were analyzed by using Anova one way and duncan on 5% significance level. Level irradiation of 2 Gray affected the number of shoots and leaves, plant height, width and length of leaves and leaf morphology and colour. Gamma radiation has succeeded in increasing the agricultural value of porang and producing porang with higher genetic diversity than wildtypes.

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“…The form of konjac that is still intact, which is tubers, is very susceptible to mold and disease, resulting in a decrease in konjac quality. Fungi and plant diseases can quickly develop on konjac tubers that are not processed immediately, and this is aided by unsuitable humidity conditions for post-harvest handling of konjac [9]. Thus, exported konjac must obtain permission from the Ministry of Agriculture by conducting product inspections and quarantines and issuing official Phytosanitary Certificates for each shipment of products that meet the requirements.…”

Section: Introductionmentioning

confidence: 99%

Elevational Impact on Konjac Price Amidst Export Restrictions to China

Nuraini,

Antriyandarti,

Helbawanti

et al. 2023

BIO Web Conf.

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Porang or konjac (Amorphophallus muelleri) farmers have complained about the drastic decline in the selling price of konjac. The export restriction of Indonesia’s konjac to China had resulted the excessive supply. The lower price, the weaker of bargaining power of farmer. Thus, threatened the sustainability of exports and farmers’ prosperity. Farmers were dependent on middlemen because of the lack of transportation and harvesting facilities. The study was conducted on the differences in the elevation of locations, considered Pangandaran and Purworejo Regency in September to December 2023. The analytical method used was Ordinary Least Square (OLS). Variables that significantly influence the selling price were farmers’ knowledge of konjac trade between Indonesia and China, elevation (MASL), processed konjac, duration of storage, and education level. Farmers who know that China banned export tend to sell konjac prices at very low prices because they were unable to comply with standard operating procedures for cultivation technique and post-harvest. Exports in the form of tubers have been very at risk of contamination and tuber rot. Konjac was not recommended to be stored long after harvest. Processed konjac into chips has been effective in reducing the water content so that the quality of konjac does not decrease.

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Pests and Diseases Management of Konjac (Amorphophallus muelleri Blume)

Cited by 3 publications

References 0 publications

New Report of Oriental Mealybug Rhizoecus Amorphophalli Betrem (Hemiptera: Pseudococcidae) in Amorphophallus Muelleri Tubers in Indonesia

New Report of Oriental Mealybug Rhizoecus Amorphophalli Betrem (Hemiptera: Pseudococcidae) in Amorphophallus Muelleri Tubers in Indonesia

Effects of gamma irradiation on morphological changes in Porang (Amorphophallus muelleri Blume)

Elevational Impact on Konjac Price Amidst Export Restrictions to China

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