BIOLOGICAL AGENTS AND INSECTICIDES TO CONTROL BUNCH MOTH, Tirathaba rufivena IN OIL PALM ESTATES IN SARAWAK, MALAYSIA

Mohamad, Saharul Abillah

doi:10.21894/jopr.2017.2903.04

Cited by 9 publications

(9 citation statements)

References 4 publications

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“…Earlier studies in Malaysia, performed in a mineral and in a peat soil, also showed that repeated application of B. thuringiensis was essential to reduce T. rufivena infestation [2,6]. Meanwhile, repeated application of synthetic insecticide to control T. rufivena population was also reported [9,25,26,27]. However, chemical insecticide is not recommended since it had negative impact on the activity and population of E. kamerunicus [10,11,12,28,29].…”

Section: Resultsmentioning

confidence: 99%

“…Synthetic insecticide application, such as cypermethrin and fipronil, has been the standard method to control T. rufivena infestation in oil palm plantations [4,6] since they were capable of rapidly reducing T. rufivena population [1,2]. However, such insecticides also had an adverse effect on other beneficial insects, including predators, parasitoids, and mainly the pollinator insect, Elaeidobius kamerunicus [6,9,10,11,12]. The use of synthetic insecticides also posed a great threat to the environment due to its slow degradation, mainly in peatland [13].…”

Section: Introductionmentioning

confidence: 99%

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Bacillus thuringiensis, a green option for controlling oil palm bunch moth Tirathaba rufivena

Priwiratama

Rozziansha

Prasetyo

2022

IOP Conf. Ser.: Earth Environ. Sci.

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A field study to test the efficacy of Bacillus thuringiensis subsp. Kurstaki against Tirathaba rufivena, the oil palm bunch moth, has been conducted in early mature (5-year-old) oil palm in Kalianta Estate, Riau. The experiment was conducted following a randomized complete block design, consisting of five concentration treatments, namely 0, 2, 4, 6, and 8 ml/L of suspension. The B. thuringiensis was sprayed directly onto the inflorescences and fruit bunches of selected palm samples every week for a month duration. The result showed that the intensity of T. rufivena attack was continuously declined since the first week after B. thuringiensis application. The decline of attack intensity is in line with the reduction of the larvae population in the affected fruit bunches. This trial demonstrated that B. thuringiensis had high efficacy against the bunch moth with an efficacy value of 74.90 %, 91.18 %, 96.96 %, and 94.77 % achieved at two weeks after application at the concentrations of 2, 4, 6, and 8 ml/L, respectively. This result suggests that B. thuringiensis at the concentration of 4-8 ml/L can be used as a sustainable option for controlling T. rufivena in oil palm plantations.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bacillus thuringiensis, a green option for controlling oil palm bunch moth Tirathaba rufivena

Priwiratama

Rozziansha

Prasetyo

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…Due to this, the management of insect pests also poses risks to beneficial insects, such as E. kamerunicus. Tirathaba mundella is one of the major insect pests of oil palm in peat areas in Sarawak, Malaysia (Mohamad et al, 2017;Ming et al, 2016;Sulaiman et al, 2021). The moth was observed to be spending most of its initial phase of development in the female inflorescences and spent male inflorescences of oil palm (Mohamad et al, 2017;Ming et al, 2016;Prasetyo et al, 2018;Yaakop and Abdul Manaf, 2015).…”

Section: Minimising the Usage Of Chemical Insecticidesmentioning

confidence: 99%

IMPACT OF Elaeidobius kamerunicus (Faust) INTRODUCTION ON OIL PALM FRUIT FORMATION IN MALAYSIA AND FACTORS AFFECTING ITS POLLINATION EFFICIENCY: A REVIEW

MOHAMAD¹

2022

JOPR

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The oil palm pollinating weevil, Elaeidobius kamerunicus, has become the single most important insect pollinator of the commodity crop in Malaysia and Indonesia, 40 years after its introduction. However, in 2020, the average national oil extraction rate (OER) has decreased from 20.21% to 19.92%. The decline was attributed to the lower oil palm fruit bunch quality. This has raised concerns on the pollination efficiency of the pollinator. As such, the factors affecting the pollination efficiency of E. kamerunicus were thoroughly discussed in this review. Eight factors, which were categorised into intrinsic and extrinsic factors, were discussed in detail. Intrinsic factors discussed are the genetic make-up of E. kamerunicus and its population level. Meanwhile, factors such as planting materials, soil types, plant physiological condition, volatiles emission, diseases/predators threatening E. kamerunicus and climatic factors were discussed in the extrinsic factors. Methods for maintaining a healthy pollinator population were suggested, as well as an emphasis on future studies based on the shortlisted factors.

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“…The flow of sodium ions is essential for nervous system to function properly. Disruption of these channels causes tremors, cessation of feeding, paralysis and eventually death of the insect pests (Brugger, 1997;Parthiban et al, 2016).…”

Section: Optimal Dosage Of Chlorantraniliprole Against Oil Palm Bunch Moth T Mundellamentioning

confidence: 99%

Minimum Effective Dose of Chlorantraniliprole and Chromafenozide to Control Oil Palm Bunch Moth Tirathana mundella Walker

King

Kwan

et al. 2021

BJRST

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The bunch moth, Tirathaba mundella is one of the leading pests in oil palm estates established on peatland. Severely infested male inflorescences usually would fail reaching anthesis. Reduction in the number of inflorescences at anthesis stage would suggest less food source and breeding ground for oil palm pollinating weevils, Elaeidobius kamerunicus, thus, affecting the fruiting percentage of oil palm and its yield. Despite to be less detrimental to the environment, biopesticide usages in the field is losing favour due to its slower rate of kill compared with conventional chemical pesticides, shorter persistence in the environment and susceptibility to unfavourable environmental conditions. The use of high host specificity chemical pesticides, such as chlorantraniliprole and chromafenozide are gaining popularity in pest management regimes. In this study, the optimum dose for chlorantraniliprole and chromafenozide in controlling T. mundella was assessed to provide valuable information for sustainable oil palm pest management. Several dosages of pesticide were evaluated for their effectiveness against T. mundella in a 7-year-old oil palm estate for six months. Based on the results obtained, application of 30 g or 40 g active ingredient (a.i.) per ha chlorantraniliprole were recommended to provide the longest protection period. To make plan for an effective pest management that could reduce material and labour cost per ha as well as the risks in developing pesticide resistance among pest, 30 g a.i per ha of chlorantraniliprole is recommended to be rotated with 25 g a.i. per ha chromafenozide for a total of four rounds in a year.

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BIOLOGICAL AGENTS AND INSECTICIDES TO CONTROL BUNCH MOTH, Tirathaba rufivena IN OIL PALM ESTATES IN SARAWAK, MALAYSIA

Abstract: The effectiveness of biological products and insecticides in controlling the infestation of

Cited by 9 publications

References 4 publications

Bacillus thuringiensis, a green option for controlling oil palm bunch moth Tirathaba rufivena

Bacillus thuringiensis, a green option for controlling oil palm bunch moth Tirathaba rufivena

IMPACT OF Elaeidobius kamerunicus (Faust) INTRODUCTION ON OIL PALM FRUIT FORMATION IN MALAYSIA AND FACTORS AFFECTING ITS POLLINATION EFFICIENCY: A REVIEW

Minimum Effective Dose of Chlorantraniliprole and Chromafenozide to Control Oil Palm Bunch Moth Tirathana mundella Walker

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