Residue dynamics and bio-efficacy of triflumezopyrim against Nilaparvata lugens and non-targeted effect on natural enemies in a rice ecosystem

2022 ◽  
Author(s):  
Ritesh Mishra ◽  
Hara Prasad Mishra ◽  
Sophia Subhadarsini Pradhan ◽  
Govindharaj Guru-Pirasanna-Pandi ◽  
Gadratagi Basana Gowda ◽  
...  
Keyword(s):  
Natural Enemies ◽  
Nilaparvata Lugens ◽  
Rice Ecosystem

scholarly journals ANALISIS KORELASI DAN REGRESI DINAMIKA POPULASI HAMA DAN MUSUH ALAMI PADA BEBERAPA VARIETAS UNGGUL PADI SETELAH PENERAPAN PHT DI KABUPATEN BONE PROVINSI SULAWESI SELATAN

2015 ◽  
Vol 22 (1) ◽  
pp. 29
Author(s):  
Asriyanti Ilyas
Keyword(s):  
Regression Analysis ◽  
Natural Enemies ◽  
Stem Borer ◽  
Nilaparvata Lugens ◽  
Rice Varieties ◽  
Correlation And Regression Analysis ◽  
Arthropod Predators ◽  
Positive Correlation Coefficient ◽  
Rice Ecosystem ◽  
High Degree

<div data-canvas-width="788.5133333333328">Different types of rice pests, have been reported. The explosions and a potential pests are Rice Stem Borer (Tryporiza</div><div data-canvas-width="802.6483333333334">sp.), Brown Planthoppers (Nilaparvata lugens), Green Leafhoppers (Nephotettix virescens), and Rats (Rattus sp.), wich</div><div data-canvas-width="802.7016666666667">an obstacle in creating stability of rice production in Bone. In rice ecosystem, natural enemies of arthropod predators</div><div data-canvas-width="802.703333333333">are most instrumental in suppressing the pest population. Fluctuation in population density of natural enemies, affecting</div><div data-canvas-width="802.6466666666668">pests presence. Efforts to suppress pest proportions through IPM, is a strategy of lowering the level of pests and damage</div><div data-canvas-width="802.6933333333333">to rice crops. This study aims to identify and measure the relationship strength between pests and natural enemies</div><div data-canvas-width="802.6733333333332">populations in some rice varieties after IPM, using correlation and regression analysis. Observations conducted in Bone,</div><div data-canvas-width="802.6600000000001">from May to August 2012, with 2 observed variables, pests and natural enemies populations in Inpari 6, Inpari 10, Inpari</div><div data-canvas-width="802.6633333333332">16, Ciherang, Cigelis, and Mekongga. Data analysis were performed using correlation and regression analysis. The</div><div data-canvas-width="802.6833333333332">results showed a high degree of correlation between pest and natural enemies (predators) populalions, characterized by</div><div data-canvas-width="802.7066666666666">a positive correlation coefficient (0.957) and significant at the level of 0.01, where each increase in the intensity of pest</div><div data-canvas-width="564.7166666666665">populations, will be followed by increase in the number of natural enemies captured.</div>

Relative Safety of Insecticides in Combination with Neem against Natural Enemies in Rice Ecosystem

2021 ◽  
Vol 33 (1) ◽  
pp. 114-119
Author(s):  
Shubhasree Dash ◽  
Sanjay Kumar Pradhan ◽  
Deepak Kumar Swain ◽  
Laxmi Narayan Mohapatra
Keyword(s):  
Natural Enemies ◽  
Relative Safety ◽  
Rice Ecosystem

scholarly journals Struktur Komunitas Hymenoptera Parasitoid Pada Berbagai Lanskap Pertanian Di Sumatra Barat

2016 ◽  
Vol 6 (1) ◽  
pp. 1
Author(s):  
Yaherwandi Yaherwandi
Keyword(s):  
Biological Control ◽  
Species Richness ◽  
Natural Enemies ◽  
Landscape Structure ◽  
Complex Problem ◽  
Agricultural Ecosystem ◽  
Species Richness And Diversity ◽  
Ecosystem Diversity ◽  
Rice Ecosystem

Understanding how the landscape structure affect the interaction between crops, pests and their natural enemies is a complex problem that can significantly impact on the success or failure of insect biological control. Hymenoptera parasitoids are particularly important natural enemies because of their great diversity and effectiveness as agents of biological control. The objective of this research is to study the diversity of Hymenoptera parasitoid on some vegetables and rice ecosystem in West Sumatera. Hymenoptera parasitoids were sampled using three trapping techniques (farmcop, insect net and yellow pan trap). Species accumulative curves, Jackknife-1 estimator, and indices of diversity were applied to analyze the data. Results indicated that there were 1522 specimen consist of 22 families and 148 species of Hymenoptera parasitoid on agricultural ecosystem in west Sumatera. Braconidae and Ichneumonidae were dominant Hymenoptera parasitoid family in vegetables ecosystem. Contrast, Mymaridae, Diapriidae, and Eulophidae were dominance of Hymenoptera parasitoid famili in rice ecosystem. Diversity of Hymenoptera parasitoid was influenced by the landscape structure. Species richness and diversity were higher in polyculture ecosystem than monoculture.

scholarly journals Survey of Rice Pests, Diseases and Natural Enemies on “Upsus” Program in Karawang District, West Java Province

2020 ◽  
Vol 24 (1) ◽  
pp. 17
Author(s):  
Kurniawan Effendi ◽  
Abdul Munif ◽  
I Wayan Winasa
Keyword(s):  
Natural Enemies ◽  
Crop Production ◽  
Nilaparvata Lugens ◽  
Leaf Blight ◽  
Brown Spot ◽  
Bacterial Leaf Blight ◽  
Cnaphalocrocis Medinalis ◽  
Pests And Diseases ◽  
The Government ◽  
Rice Plantation

"Upsus" (Special Efforts) Program is a program to increase crop production and productivity to support the acceleration of food self-sufficiency held by the government. The targets are to increase the planting index (IP) by 0.5 and productivity by 0.3 ton/ha/Harvested Dry Grain (HDG). Increased productivity has not been reached optimally. This research aimed to determine the number/types of the dominant pests and natural enemies, and pests and diseases attack rates in the wetland rice plantation "Upsus" Program in Karawang District. Direct observation was carried out on four stages of plant development, in the nursery stage (10–14 days after sowing) 200–300 m², seedlings stage (10–20 days after planting), vegetative stage (5–6 weeks after planting), and reproductive stage (1–2 weeks after flowering) respectively within an area of 2000 m². Twenty samples were observed in the nursery stage and 50 samples in the following stages. The dominant pests and diseases found were Nilaparvata lugens, Leptocarisa oratorius, Schirpophaga incertulas, Cnaphalocrocis medinalis, Scotinophara coarctata, Mythimna separata, bacterial leaf blight (Xanthomonas. oryzae pv. oryzae), blast (Pyricularia grisea) and narrow brown spot (Cercospora oryzae). The recorded dominant natural enemies were Cyrtorhinus sp., Paederus sp., Tetragnatha sp., and Pardosa pseudoannulata. S. incertulas showed the highest attack intensity and the highest disease severity was found in bacterial leaf blight. The largest population of dominant pests and natural enemies was found in the generative stage. The high application of pesticides affected the population of pests, natural enemies, and the level of pest and disease attacks.

scholarly journals Diversity of Natural Enemies Associated with Refuge Flowering Plants of Zinnia elegans, Cosmos sulphureus, and Tagetes erecta in Rice Ecosystem

2019 ◽  
Vol 23 (2) ◽  
pp. 285
Author(s):  
Gracia Melsiana Aldini ◽  
Edhi Martono ◽  
Y. Andi Trisyono
Keyword(s):  
Natural Enemies ◽  
Diversity Index ◽  
Flowering Plants ◽  
Zinnia Elegans ◽  
Tagetes Erecta ◽  
The Family ◽  
Evenness Index ◽  
Family Level ◽  
High Dominance ◽  
Rice Ecosystem

The presence of flowering plants is essential to the conservation of natural enemies in some particular ecosystems, such as agroecosystem. The objectives of this research were to determine the natural enemies associated with refugial flowering plants Zinnia elegans, Cosmos sulphureus, and Tagetes erecta planted in the rice bunts. The research took place in the rice farms in the villages of Jatisarono, Wijimulyo, and Tanjungharjo, Nanggulan Regency, Kulon Progo, District. The natural enemies were observed using three different methods: insect nets, pitfall, and direct observation. The observations were conducted in the morning, between 07.00-10.00 a.m., with an interval twice a week for 8-weeks. The natural enemies were identified to the family level. Diversity index (Shannon-Wienner), evenness index, and dominance were calculated for each plant. The diversity index for Z. elegans, C. sulphureus, and T. erecta fell in the category of medium ranging from 1.328-1.581 with medium evenness (0.365-0.574) and high dominance of 0.314-0.453. Natural enemies associated with C. sulphureus and Z. elegans were more compared to those associated with T. erecta.

scholarly journals HAMA-HAMA PADA TANAMAN PADI SAWAH (Oryza sativa L.) DI KELURAHAN MAKALONSOW KECAMATAN TONDANO TIMUR KABUPATEN MINAHASA

EUGENIA ◽  
2018 ◽  
Vol 23 (3) ◽  
Author(s):  
J. Manueke ◽  
B. H. Assa ◽  
E. A. Pelealu
Keyword(s):  
Natural Enemies ◽  
Sitophilus Oryzae ◽  
Coccinella Septempunctata ◽  
Stem Borer ◽  
Nilaparvata Lugens ◽  
Paddy Fields ◽  
Wetland Rice ◽  
Sesamia Inferens ◽  
Nymphula Depunctalis ◽  
Rice Stem Borer

ABSTRACT The purpose of this research is to know  the pest species in wetland rice crops at Makalonsow Village of East Tondano Distric in Minahasa Regency. The study used a descriptive obsevational method that is observing directly the pests found in rice paddy fields by means of sweeping with insect net and observing directly on paddy fields plaot and paddy fields clumps. The identified pests were identified and made in accordance with the results of identification for each species of pest.  The results showed that 11 species of pests and 4 spesies of natural enemies found in paddy fields of wetland rice at Makalonsow Village of East Tondano District in Minahasa Regency.  The pests are White Rice Stem Borer (Tryporyza innotata), Rice Cherry Stem Borer (Chilo suppressalis), Purple Rice Stem Borer (Sesamia inferens), White Pest (Nymphula depunctalis), Brown Planthopper (Nephotettix virescens), Green Planthopper (Nilaparvata lugens), Paddy Stink Bug (Leptocorisa acuta), Black Lady Bug (Pareaucosmetus sp.), Rice Weevil   (Sitophilus oryzae), Golden Snail (Pomacea caniculata), Hous and Tre Sparow (Passer spp.), and Rice-field Rat (Ratus argentiventer.). Natural enemies are Worship Grasshopper (Mantis sp.), Dragonflies (Sympetrum flaveolum), Coccinelid Beetle (Coccinella septempunctata), and Spider Hunters (Pardosa sp.).Keywords : plant pest, wetland rice crops,  natural enemies of pest ABSTRAK Tujuan penelitian adalah mengetahui jenis-jenis hama pada tanaman padi sawah di Kelurahan Makalonsow Kecamatan Tondano Timur Kabupaten Minahasa. Penelitian menggunakan metode obsevasional deskriptif yaitu mengamati langsung hama yang ditemukan pada areal tanaman padi sawah dengan cara penyapuan dengan net serangga dan mengamati langsung pada petakan sawah dan rumpun tanaman padi sawah. Hama-hama yang ditemukan diidentifikasi dan dibuat deskripsi sesuai dengan hasil identifikasi untuk setiap jenis hama. Hasil penelitian menunjukkan bahwa ditemukan 11 jenis hama dan 4 jenis musuh alami padahabitat tanaman padi sawah di Kelurahan Makalonsow Kecamatan Tondano Timur Kabupaten Minahasa. Hama-hama tersebut yaitu Penggerek batang padi putih (Tryporyza innotata), Penggerek Batang Padi Bergaris (Chilo suppressalis), Penggerek Batang Padi Ungu (Sesamia inferens), Hama Putih (Nymphula depunctalis), Wereng Coklat (Nephotettix virescens), Wereng Hijau (Nilaparvata lugens), Walang Sangit (Leptocorisa acuta), Kepik Hitam (Pareaucosmetus sp.), Bubuk Beras (Sitophilus oryzae), Keong Emas (Pomacea caniculata), Hama Burung Padi Sawah (Passer spp.), dan Hama Tikus Sawah (Ratus argentiventer).  Musuh alami yaitu  Belalang Sembah (Mantis sp.), Capung (Sympetrum flaveolum), Kumbang Coccinelid (Coccinella septempunctata), dan Laba-Laba Pemburu (Pardosa sp.).Kata kunci : hama tanaman, tanaman padi sawah, musuh alamiah hama

scholarly journals Kepadatan Populasi Wereng Coklat (Nilaparvata lugens, Stal.) dan Musuh Alaminya Pada Berbagai Varietas Padi di Bantul Yogyakarta

2021 ◽  
Vol 1 (2) ◽  
pp. 45-48
Author(s):  
Darmawan Suryo Sudarsono
Keyword(s):  
Population Density ◽  
Natural Enemies ◽  
Rice Field ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Resistant Variety ◽  
Local Varieties ◽  
Hybrid Variety ◽  
Nilaparvata Lugens Stål

A research to observe the population density of brown planthoppers (Nilaparvata lugens, Stal.) and their predator and parasitoid natural enemies has done on the rice field in Bantul regency of Yogyakarta. The research was conducted to observe the hoppers and its natural enemies on three local varieties and one superior brown planthoppers resistant variety of rice. The three local varieties of rice were Rejosari, Sri Kuning, and Sri Ayu, while the hopper resistant variety was IR 64. The observation were replicated three times. The result showed that population of brown planthoppers in the three local varieties of rice were higher than in the resistant IR 64 hybrid variety. The population of predators and parasitoid were relatively high in order to control the development of brown planthopper population. The predator Lycosa sp. and the parasitoids Anagrus sp.  were commonly found in the ecosystem.

scholarly journals Parasitism of The Rice Brown Planthopper Eggs in Various Periods of Time of The Day

2016 ◽  
Vol 20 (1) ◽  
pp. 28
Author(s):  
Siti Haryati ◽  
Y. Andi Trisyono ◽  
Witjaksono Witjaksono
Keyword(s):  
Cultural Practices ◽  
Early Stage ◽  
Brown Planthopper ◽  
Early Morning ◽  
Nilaparvata Lugens ◽  
Before And After ◽  
Important Pest ◽  
Parasitism Level ◽  
Peak Abundance ◽  
Rice Ecosystem

The rice brown planthopper, Nilaparvata lugens (Hemiptera: Delphacidae) is an important pest of rice. Since at the early stage, this pest is infested by parasitoids, but most cultural practices do not consider the existences of parasitoids in rice ecosystem. This study was aimed to determine the level of parasitism on N. lugens with regard to the time of the day. This information would be useful to minimize the effect of insecticide application to the parasitoids. Trapping  of  egg parasitoids in rice ecosystem was conducted every two hours from 05.00 a.m. until 04.00 p.m. Parasitism occured as early as at 05.00 a.m. (12.26% of the total parasitoid found), reached the peak abundance at 11.00 a.m. (36.13%), and decreased at 01.00 p.m. The parasitism level varied from 1.12 to 8.51% at 66 days after planting. The highest number of parasitoids and the highest parasitism level occured when trapping was conducted between 11.00 a.m.−01.00 p.m.. Before and after this period of time, the number of parasitoid emerged and parasitism were low. This suggest that if insecticide is necessary, it should be applied in the early morning or late afternoon. INTISARIWereng batang padi cokelat, Nilaparvata lugens (Hemiptera: Delphacidae), merupakan salah satu hama penting padi. Praktik budidaya pertanian padi belum memperhatikan aktivitas parasitoid dalam ekosistem. Tujuan dari penelitian ini yaitu untuk mengetahui tingkat parasitasi telur N. lugens pada beberapa waktu dalam sehari. Informasi ini akan bermanfaat untuk mengurangi dampak aplikasi insektisida terhadap parasitoid. Pemerangkapan parasitoid telur N. lugens di lahan padi dilakukan setiap dua jam yang dimulai pada pukul 05.00 sampai pukul 16.00. Parasitoid telur N. lugens mulai aktif pada pukul 05.00 (12,26%), mencapai puncaknya pukul 11.00 (36,13%), dan mulai mengalami penurunan pada pukul 13.00. Tingkat parasitasi pada tanaman padi umur 66 hari setelah tanam berkisar mulai 1,12−8,51%. Hasil pemerangkapan menunjukkan bahwa jumlah parasitoid yang paling banyak muncul dan tingkat parasitisme tinggi terjadi pada waktu pemerangkapan yang dilakukan pada pukul 11.00−13.00. Sebelum dan sesudah waktu pemerangkapan tersebut jumlah parasitoid dan tingkat parasitisme rendah. Hal ini menunjukkan bahwa apabila aplikasi insektisida diperlukan, maka harus dilakukan di pagi hari atau sore hari. 

scholarly journals Effect of variety and planting date of rice on population of natural enemies of brown planthopper, Nilaparvata lugens (Stal)

2014 ◽  
Vol 6 (2) ◽  
pp. 409-415 ◽  
Author(s):  
A. S. Tetarwal ◽  
Lakhi Ram ◽  
Ram Singh ◽  
Manoj Kumar Jat
Keyword(s):  
Natural Enemies ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Planting Date ◽  
Reverse Trend ◽  
Significant Difference ◽  
The Mean ◽  
Nilaparvata Lugens Stål

The present study on the effect of variety and planting date of rice on population of natural enemies of brown planthopper, Nilaparvata lugens (Stal) showed that during August, the mean population of spiders was statistically on par on CSR 30 and PR 114. The population differed with dates and was significantly (p=0.05) higher (9.0/10 hills) in D2 during 2011 only. There was no significant difference in the population of spiders on two varieties and dates of transplanting during September 2011 only. However, significantly higher population of spiders was recorded in variety PR 114 (21.65/10 hills) and D2 (20.52/10 hills) than on CSR 30 (13.67/10 hills) and D1 (14.80/10 hills) during September, 2012. The mean population of spiders did not differ significantly with the dates during October, 2011 and 2012. However, it was significantly higher on variety PR 114 (27.65/10 hills) than on CSR 30 during both the crop seasons. Mirid bugs did not appear in the month of August, 2011 and 2012 whereas during September 2011, the variety CSR 30 and D1 registered significantly higher population than other variety and date. However, a reverse trend was observed with varieties and dates during 2012. The mean population of coccinelid, carabid and staphylinid beetles remained very low on both the varieties in the month of August during 2011 and 2012. However, the population of these predators was influenced significantly by the varieties and dates during 2012. The population of nymphal-adult parasitoids also remained very low during both years and was not influenced by varieties and dates.

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