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All Journal AGRIVITA, Journal of Agricultural Science Jurnal Perlindungan Tanaman Indonesia Communications in Science and Technology
Aldawood, Abdulrahman Saad
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Agriculture, Biological Sciences & Forestry Engineering

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Feeding Behavior of Brown Planthopper (Nilaparvata lugens) on Pigmented Rice Monitored by Electrical Penetration Graph (EPG) Witjaksono, Witjaksono; Aldawood, Abdulrahman Saad; Kristamtini, Kristamtini; Sumarno, Sumarno; Andriyanto, Rofiq; Soffan, Alan
Jurnal Perlindungan Tanaman Indonesia Vol 28, No 2 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.96909

Abstract

Rice is one of the essential daily commodity for most of Asian. However, the brown plant hopper (BPH; Nilaparvata lugens) infestation had been threatening the increasing demand of rice production. Evaluating resistance level of rice cultivars against BPH will help in managing BPH infestation. The feeding behavior monitoring of brown plant hopper (BPH; Nilaparvata lugens) by  using an electrical penetration graph (EPG) was conducted to evaluate the resistance level of several rice cultivars against BPH, including pigmented rice (black rice cv. Sembada hitam; red rice cv. Sembada merah); and the commonly consumed white rice (cv. Ciherang). The EPG instrument allowed the monitoring of BPH feeding behaviors by quantifying three unique waveforms, namely, N3, N4, and N5, which represent BPH feeding activities in areas near phloem tissues, in phloem tissues, and in xylem tissues, respectively. EPG monitoring of BPH feeding activities in black rice revealed the absence of the N3 and N4 waveforms. Red rice showed the N3 waveform but not the N4 waveform. White rice showed all three waveforms occurring with high numbers and long total durations. The absence of the N4 waveform in the two pigmented rice cultivars indicated the failure of BPH to access phloem tissues. Overall, the results revealed that the resistance of rice against BPH based on feeding activity could be ordered as follows: black rice > red rice > white rice. This report provides essential information on the resistance mechanism of pigmented rice cultivars against BPH.
Investigation of Palm Weevil Rhynchophorus spp. Infestation on Oil Palm Plantation at Kerincikanan, Siak, Riau Adi, Hanindyo; Sudaryatno, Sudaryatno; Aldawood, Abdulrahman Saad; Hadisusanto, Suwarno; Sukirno, Sukirno
AGRIVITA Journal of Agricultural Science Vol 47, No 3 (2025)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v47i3.4429

Abstract

Rhynchophorus spp. has been observed to be a potential pest in oil palm plantations in Indonesia. Rhynchophorus spp. has been reported to have attacked oil palm in Kalimantan and Papua, but reports regarding attacks by Rhynchophorus spp. in Sumatra have not been updated. Riau is the biggest producer of crude palm oil. This study aims to investigate Rhynchophorus spp. at oil palms in Siak, Riau. The study was conducted in the smallholder area of the Kerincikanan region. The study used survey methods to observe the symptoms of oil palms infested by Rhynchophorus spp. Pheromone aggregate traps were also used to capture Rhynchophorus spp. The results showed that after tree felling, two oil palms were positively infested by Rhynchophorus spp. Both the oil palms exhibited characteristic symptoms, including a collapsing crown, no visible injury or fungal infections in the stem, some leaves were still green, while others were dry. While, other eight oil palms were suspected to be infested by Rhynchoporus spp. Based on morphological characters, it was shown that Rhynchophorus spp. captured was R. vulneratus. These results suggest that oil palm plantations in the studied area should increase their awareness of the palm weevil's attack and implement mitigation approaches to mitigate further impacts.
Artificial Diet for the Cultivation of Eri Silkworm (Samia ricini Drury 1773) (Lepidoptera: Saturniidae) Barid, Siti Shofa Assyifa’ul Qulbi; Ramadhani, Fathur Syahrian; Purwanto, Hari; Saragih, Hendry T.S.S.G.; Aldawood, Abdulrahman Saad; Nuringtyas, Tri Rini; Sukirno
Communications in Science and Technology Vol 10 No 2 (2025)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.10.2.2025.1781

Abstract

The objective of this present study was to identify a suitable artificial diet formulation to support the development of eri silkworms, with castor leaves (Ricinus communis) constituting the primary ingredient. The quality of the artificial diet was evaluated using neonate larvae, comparing it to fresh castor leaves. The nutritional value was assessed by analyzing the protein content in the hemolymph of fifth-instar larvae using the Folin-Ciocalteu method and proximate analysis. The findings demonstrated that an artificial diet containing castor leaf powder during early instars, with fresh leaves being incorporated into the diet later instars, resulted in higher larval protein content. The weight of cocoon, empty cocoon, and pupa was 1.59 ± 0.05 g, 0.23 ± 0.02 g, and 1.37 ± 0.05 g, respectively. The shell ratio, female wingspan, and egg fertility were found to be 15.31 ± 0.11%, 2.42 ± 0.20 cm, and 79.2 ± 5.83 eggs, respectively. Formulation P2 exhibited the lowest larval mortality (4.23 ± 0.58%) and hemolymph protein content of 27.51 μg/mL These findings are of imperative for the cultivation of eri silk worm using artificial diet to avoid pathogen contamination and controllable nutrient content considering the early larval instar that is highly sensitive to microbes and nutrient deficiencies.
Co-Authors Adi, Hanindyo Andriyanto, Rofiq Hari Purwanto Hendry Tri Sakti Saragih Kristamtini Kristamtini, Kristamtini Qulbi, Siti Shofa Assyifa Ramadhani, Fathur Syahrian Soffan, Alan Sudaryatno Sudaryatno SUKIRNO Sukirno Sukirno Sumarno . SUWARNO HADISUSANTO Tri Rini Nuringtyas Witjaksono Witjaksono