Relationship between Population and Intensity of Cassava Mealybug (Phenacoccus manihoti) Attack on Flores Island

Puu, Yustina Maria Silvia Wonga

doi:10.20961/carakatani.v34i1.25974

Cited by 2 publications

(2 citation statements)

References 21 publications

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“…A study was conducted to observe the effect of the number of mealybugs on the intensity of attacks with direct observation and sampling in three areas (Figure 3): Ende, Sikka, and Nagekeo districts. The results showed that Sikka district had the highest intensity of damage (43.3%), followed by Nagekeo district (22%), and Ende district with the lowest intensity, at 20% [92]. The development of the mealybug population is strongly supported by weather conditions with high temperatures and low humidity [93,94].…”

Section: Mealybugsmentioning

confidence: 97%

The Roles of Cassava in Marginal Semi-Arid Farming in East Nusa Tenggara—Indonesia

Ngongo¹,

Basuki²,

deRosari³

et al. 2022

Sustainability

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Risk and uncertainty in grain crop production are common in marginal semi-arid environments, such as East Nusa Tenggara province. Growing root and tuber crops in a mixed-cropping system is one of the strategies developed by smallholder farmers to substitute food grains and minimize risk. Nevertheless, root and tuber crops are not prioritized for food production systems since food crops in Indonesia are based more on grain and wetland rice production systems. This paper reviews cassava crops, which are widely cultivated by smallholder farmers. This paper contributes to understanding the roles of cassava for smallholder farmers, the diversity of the cassava germ plasm, the progress made to increase cassava productivity, and the potency of cassava crops to improve farmers’ incomes. This paper highlights that, in the low and erratic rainfall of dominant semi-arid regions, the development of cassava is pivotal to secure the harvest of food crops or food availability and income generation for marginal farmers.

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Section: Mealybugsmentioning

confidence: 97%

The Roles of Cassava in Marginal Semi-Arid Farming in East Nusa Tenggara—Indonesia

Ngongo¹,

Basuki²,

deRosari³

et al. 2022

Sustainability

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“…Hama ini pertama kali terdeteksi di Bogor pada tahun 2010 (Muniappan et al 2011). Hingga akhir tahun 2014, kutu putih P. manihoti telah tersebar luas di Pulau Jawa dan Lampung (Abdulchalek et al 2017) serta sejak tahun 2017 ditemukan di Pulau Flores (Pu'u 2019). Kutu P. manihoti bersifat monofag, hanya menyerang tanaman singkong (Cox & Williams 1981).…”

Section: Pendahuluanunclassified

Masa hidup imago, progeni, dan kemampuan parasitisasi Anagyrus lopezi (De Santis) (Hymenoptera: Encyrtidae), parasitoid kutu putih singkong

2020

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Parasitoid Anagyrus lopezi (De Santis) (Hymenoptera: Encyrtidae) diintroduksikan dari Thailand ke Indonesia pada tahun 2014 untuk mengendalikan hama asing invasif, kutu putih singkong Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae). Penelitian dilakukan di laboratorium dengan tujuan untuk mengetahui potensi reproduksi, pengaruh pemberian larutan madu terhadap masa hidup imago, mempelajari keperidian, progeni, dan respons A. lopezi terhadap peningkatan kerapatan inang. Penelitian dilaksanakan dengan memajankan nimfa instar-3 kutu putih pada parasitoid. Pengaruh perlakuan pakan madu terhadap masa hidup imago parasitoid dilakukan pada kondisi tanpa inang. Keperidian diukur berdasarkan banyaknya mumi yang terbentuk. Hasil penelitian menunjukkan betina hidup selama 3,7 hari dan jantan 3,2 hari bila hanya tersedia air. Masa hidup imago parasitoid berlangsung lebih lama bila tersedia madu. Parasitoid yang diberi larutan madu 50% mampu hidup 6–9 kali lipat lebih lama dibandingkan dengan yang hanya diberi air. Selama hidupnya imago betina A. lopezi memarasit 96–287 kutu putih, dengan rataan 203,7 atau tingkat parasitisasi 34,6%, serta 24,86% mengalami kematian karena kegiatan pengisapan inang. Masa perkembangan pradewasa dari telur hingga imago muncul berlangsung 17,97 dan 17,67 hari, berturut-turut untuk jantan dan betina. Rataan progeni per induk adalah 88,8 individu, dengan 56,9% berjenis kelamin betina. Pada kerapatan inang 2–100 individu, parasitoid A. lopezi memperlihatkan tanggap fungsional tipe III.

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Relationship between Population and Intensity of Cassava Mealybug (Phenacoccus manihoti) Attack on Flores Island

Cited by 2 publications

References 21 publications

The Roles of Cassava in Marginal Semi-Arid Farming in East Nusa Tenggara—Indonesia

The Roles of Cassava in Marginal Semi-Arid Farming in East Nusa Tenggara—Indonesia

Masa hidup imago, progeni, dan kemampuan parasitisasi Anagyrus lopezi (De Santis) (Hymenoptera: Encyrtidae), parasitoid kutu putih singkong

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