scholarly journals Bioactivities of Lamiaceae, Myristicaceae, and Myrtaceae plant oils against Nilaparvata lugens Stâl. (Hemiptera: Delphacidae)

2021 ◽  
Vol 948 (1) ◽  
pp. 012060
Author(s):  
T L Mardiningsih ◽  
Rohimatun
Keyword(s):  
Brown Rice ◽  
Nilaparvata Lugens ◽  
Fourth Instar ◽  
Oviposition Deterrent ◽  
Botanical Insecticides ◽  
Plant Oils ◽  
Syzygium Aromaticum ◽  
Feeding Inhibition ◽  
Pogostemon Cablin ◽  
Nilaparvata Lugens Stål

Abstract Essential oil (EO) plants have properties as botanical insecticides. Some of them come from the families of Lamiaceae, Myristicaceae, and Myrtaceae. A plant belonging to the Lamiaceae includes patchouli (Pogostemon cablin), while the Myristicaceae includes nutmeg (Myristica fragrans), and the Myrtaceae includes clove (Syzygium aromaticum) and cajuput (Melaleuca cajuput subsp. cajuputi). This research aimed to evaluate toxicity, feeding inhibition, and oviposition deterrent from four EO plants from the Lamiaceae, Myristicaceae, and Myrtaceae to brown rice planthopper Nilaparvata lugens (Hemiptera: Delphacidae), the main pest of rice. The results showed that cajuput and patchouli oil gave more potent toxicity to N. lugens with LC50 and LC95 were 0.016% and 4.87% for cajuput oil and 0.019% and 5.25% for patchouli oil. Cajuput oil at 0.002% deterred oviposition 51.74% and inhibited feeding on 0.016% as many as 71.52% with strong enough criteria to the fourth instar nymphs of N. lugens. Patchouli oil deterred oviposition from 0.002% as much as 61.15% and inhibited feeding on 0.019% as many as 68.73% with strong enough criteria. The highest oviposition deterrent was 83.2% on patchouli oil at the concentration of 0.188%, whereas the highest feeding inhibition was 82.78% on cajuput oil at the concentration of 0.169%.

Brown rice planthopper (Nilaparvata lugens Stal) detection based on deep learning

2020 ◽  
Vol 21 (6) ◽  
pp. 1385-1402
Author(s):  
Yue He ◽  
Zhiyan Zhou ◽  
Luhong Tian ◽  
Youfu Liu ◽  
Xiwen Luo
Keyword(s):  
Deep Learning ◽  
Brown Rice ◽  
Nilaparvata Lugens ◽  
Nilaparvata Lugens Stål

scholarly journals Uji Ekstrak Daun Tithonia diversifolia sebagai Penghambat Daya Makan Nilaparvata lugens Stal. pada Oryza sativa L. (Evaluation of Tithonia diversifolia Leaf Extract as Feeding Capacity Inhibitor of Nilaparvata lugens in Oryza sativa L.)

2013 ◽  
Vol 3 (2) ◽  
Author(s):  
Tri A. Mokodompit ◽  
Roni Koneri ◽  
Parluhutan Siahaan ◽  
Agustina M Tangapo
Keyword(s):  
Oryza Sativa ◽  
Leaf Extract ◽  
Oryza Sativa L ◽  
Feeding Activity ◽  
Insect Pest ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Tithonia Diversifolia ◽  
Feeding Inhibition ◽  
Nilaparvata Lugens Stål

AbstrakWereng Batang Coklat (WBC) (Nilaparvata lugens Stal.) merupakan serangga hama yang dapat merusak tanaman padi (Oryza sativa L.). Tanaman kipait (Tithonia diversifolia) berpotensi sebagai insektisida nabati karena memiliki senyawa toksik terhadap serangga. Penelitian ini bertujuan untuk mengkaji aktifitas makan akibat pemberian ekstrak daun kipait. Konsentrasi ekstrak daun kipait yang digunakan adalah 0% (kontrol), 1%, 3%,5% dan 7% dalam RAL (Rancangan Acak Lengkap) dengan 5 kali ulangan. Hasil penelitian menunjukkan bahwa pemberian ekstrak daun kipait berpengaruh terhadap penghambatan daya makan WBC. Penghambatan makan tertinggi terjadi pada konsentrasi 7% setelah 24 jam.Kata kunci : penghambatan daya makan, Nilaparvata lugens Stal., Tithonia diversifoliaAbstractBrown planthopper (BPH) (Nilaparvata lugens Stal.) Is an insect pest that can damage rice plants (Oryza sativa L.). Kipait (Tithonia diversifolia) is potential as a bioinsecticide because it is toxic to insects. This study aimed to evaluate the feeding activity that was influenced by kipait leaf extract. The concentration of kipait leaf extract were 0% (control), 1%, 3%, 5% and 7%. The experiment design was CRD (completely randomized design) with 5 replications. The results showed that the kipait leaf extract influenced the feeding inhibition of BHP. The highest inhibition occurred in the concentration of 7% after 24 hours treatment.Keywords : brown planthopper, feeding inhibition, Tithonia diversifolia

scholarly journals The Effectiveness of Pyrethrum, Neem, Beauveria bassiana and Metarhizium anisopliae Against Brown Plant hopper (Nilaparvata lugens Stal.)

2019 ◽  
Vol 30 (1) ◽  
pp. 1
Author(s):  
Agus Kardinan ◽  
Tri Eko Wahyono ◽  
Nurbetti Tarigan
Keyword(s):  
Beauveria Bassiana ◽  
Metarhizium Anisopliae ◽  
Horizontal Transmission ◽  
Nilaparvata Lugens ◽  
Botanical Insecticides ◽  
Botanical Insecticide ◽  
Insecticide Application ◽  
Nilaparvata Lugens Stål ◽  
Brown Plant Hopper ◽  
Better Than

<p>Brown plant hopper (Nilaparvata lugens Stal) is the main pest on rice cultivation.  Synthetic insecticides application had negative impact to the human health and environment. The research objective was aimed to examine the effectiveness of botanical (pyrethrum and neem) and bio-insecticides (Beauveria bassiana/Bb and Metarhizium anisopliae/Ma) against brown plant hopper. Research was conducted at Entomology Laboratory of Indonesian Spices and Medicinal Crops Research Institute, Bogor in 2017. Trial consisted of two activities: the effectiveness of botanical and bio-insecticides to brown plant hopper mortality and horizontal transmission of bio-insecticides on brown plant hoppers. Botanical pesticide tested was (1) pyrethrum I (5 ml.l-1 water ), (2) pyrethrum II (5 ml.l-1 water), (3) neem I (20 ml.l-1 water), (4) neem II (20 ml.l-1 water), (5) synthetic insecticide (2 ml.l-1 water) and (6) control.  Bio-insecticide treatments were (1) Bb (spraying, 2.5 ml/plant), (2) Bb (granule, 5 g/pot), (3) Ma (spraying, 2.5 ml/plant), (4) Ma (granule, 5 g/ pot) and (5) control.  Treatments of horizontal transmission was the ratio of infected : healthy brown plant hopper 1 : 10; 2 : 10; 3 : 10 and 4 : 10. Botanical insecticides were prospective to suppressing brown plant hopper population of 85-87 % (pyrethrum) and   60-70 % (neem).   B.  bassiana was able  to   suppress   brown   plant     hopper population (18.2%), better than   M. anisopliae (5.6 %). Biological insecticide application by contact (spraying) was better than applied in granules form.  Botanical insecticide application showed no horizontal transmission from infected to healthy insect. Botanical insecticide (pyrethrum and neem) was more prospective than bio-insecticide (B. bassiana and M. anisopliae) in controlling brown plant hopper. </p>

scholarly journals Recent trends in insecticide susceptibility of the brown rice planthopper(Nilaparvata lugens (STAL)).

1991 ◽  
Vol 37 ◽  
pp. 95-99
Author(s):  
Susumu MAKINO ◽  
Haruki MURANAGA ◽  
Hideaki INOUE ◽  
Saburou HIGO ◽  
Manabu HORIMOTO ◽  
...  
Keyword(s):  
Brown Rice ◽  
Nilaparvata Lugens ◽  
Insecticide Susceptibility ◽  
Recent Trends ◽  
Nilaparvata Lugens Stål

NGHIÊN CỨU ẢNH HƯỞNG CỦA MẬT ĐỘ GIEO SẠ ĐẾN SINH TRƯỞNG, PHÁT TRIỂN VÀ NĂNG SUẤT CỦA GIỐNG LÚA KHÁNG RẦY NÂU HP28 TẠI THỪA THIÊN HUẾ.

2014 ◽  
Vol 91 (3) ◽  
Author(s):  
Nguyễn Tiến Long ◽  
Trần Đăng Hòa ◽  
Trần Thị Lệ ◽  
Hoàng Hải Vân ◽  
Trương Thị Diệu Hạnh ◽  
...  
Keyword(s):  
Nilaparvata Lugens ◽  
Viet Nam ◽  
Nilaparvata Lugens Stål

Rầy nâu Nilaparvata lugens Stal (Homoptera: Delphacidae) là sâu hại nguy hiểm ở tất cả các vùng trồng lúa của Việt Nam. Gieo trồng giống lúa kháng rầy là biện pháp phòng chống rầy nâu có hiệu quả nhất trong hệ thống quản lý dịch hại lúa tổng hợp (IPM). Một trong số những giống lúa được đánh giá có khả năng kháng rầy nâu tại Thừa Thiên Huế là giống HP28. Tuy nhiên, để đưa giống này vào sản xuất trên địa bàn cần phải xây dựng và hoàn thiện quy trình kỹ thuật. Trong nghiên cứu này chúng tôi đánh giá ảnh hưởng của mật độ gieo sạ đến sinh trưởng, phát triển, và năng suất của giống lúa kháng rầy nâu HP28 trong vụ Đông Xuân và Hè Thu tại Thừa Thiên-Huế. Thí nghiệm được bố trí theo kiểu khối ngẫu nhiên đầy đủ (RCBD) với 3 lần nhắc lại, diện tích mỗi ô thí nghiệm là 20m2. Kết quả đã xác định được đối với giống lúa HP28 ở Thừa Thiên Huế với mật độ gieo 60kg/ha thóc giống cho năng suất cao nhất và tăng khả năng kháng rầy nâu  ở cả hai vụ Đông Xuân và Hè Thu.Từ khóa: Giống kháng, Nilarpavata lugens, rầy nâu, mật độ gieo sạ

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