Bioesai Bioinsektisida Beauveria Bassiana Dari Sumatera Selatan Terhadap Kutu Putih Pepaya, Paracoccus Marginatus Williams & Granara De Willink (Hemiptera: Pseudococcidae)

In fresh swamp areas of South Sumatra, papaya mealybug, Paracoccus marginatus (Hemiptera: Pseudococcidae) could cause severe damage to young papaya trees and decreased the fruit quality. The objective of this research was to bioassay test of the bioinsecticide Beauveria bassiana againts nymphs of P. marginatus. B. bassiana was conducted on rice medium. The bioinsecticide was formulated using dried compost, compost gram, paddy ash, paddy bran, woody powder, paddy bran mixed with woody powder, compost enriched with Trichoderma virens. Controls used were sterile water (control 1) and isolate of B. bassiana (control 2). Results showed that conidial viability of B. bassiana on control 2 was the highest (46.33%). The viability of control 2 was not significantly different from the formulations with carrier of the paddy bran, the paddy bran mixed with woody powder, and the compost enriched with T. virens. The highest nymph mortality (82.86%) was found on formulation of compost enriched with T. virens and was significantly different from other treatments. The lowest visibly (73.48%) occured on formulation of paddy ash, and was significantly different from other treatments. Mortality on control 1 on average was 29.52%, whereas control 2 averaged of 75.71%. The shortest median lethal time (LT50) (3.55 days) was found on formulation of compost enriched with T. virens but the longest one (3.73 days) occured on the formulation of paddy ash. Overall, the most effective bioinsecticide was the formulation of compost enriched with T. virens

Sublethal effects of kaolin and the biopesticides Prestop-Mix and BotaniGard on metabolic rate, water loss and longevity in bumble bees (Bombus terrestris)

Kaolin is an inert material with a broad range of applications, e.g. as an insecticide and as a filling substance in the formulation of biopesticides. Hence, bees that dispense biopesticides to the field in the context of entomovectoring are exposed to elevated risks because of sideeffects of those products. Here, we investigated with use of bumble bee workers of Bombus terrestris L. the lethal and sublethal effects of (i) pure kaolin, (ii) the biofungicide Prestop-Mix containing the parasitic fungus Gliocladium catenulatum and kaolin and (iii) the bioinsecticide BotaniGard containing the entomopathogenic fungus Beauveria bassiana and compared with wheat flour powder that we considered safe for bumble bees. As the most important result, treatment with kaolin increased the cuticular water loss and reduced the survival of treated bumble bees, while Prestop-Mix had no negative effect on longevity. BotaniGard caused mortality in the bumble bees because of the entomopathogenic spores it contained. In conclusion, our data indicated that substances used as ‘inert materials’ and in biocontrol agents which are used in IPM and organic farming systems may bring higher risks to bumble bees used in entomovector technology

Biological Control of the Chagas Disease Vector Triatoma infestans with the Entomopathogenic Fungus Beauveria bassiana Combined with an Aggregation Cue: Field, Laboratory and Mathematical Modeling Assessment

Background: Current Chagas disease vector control strategies, based on chemical insecticide spraying, are growingly threatened by the emergence of pyrethroid-resistant Triatoma infestans populations in the Gran Chaco region of South America. Methodology and findings: We have already shown that the entomopathogenic fungus Beauveria bassiana has the ability to breach the insect cuticle and is effective both against pyrethroid-susceptible and pyrethroid-resistant T. infestans, in laboratory as well as field assays. It is also known that T. infestans cuticle lipids play a major role as contact aggregation pheromones. We estimated the effectiveness of pheromonebased infection boxes containing B. bassiana spores to kill indoor bugs, and its effect on the vector population dynamics. Laboratory assays were performed to estimate the effect of fungal infection on female reproductive parameters. The effect of insect exuviae as an aggregation signal in the performance of the infection boxes was estimated both in the laboratory and in the field. We developed a stage-specific matrix model of T. infestans to describe the fungal infection effects on insect population dynamics, and to analyze the performance of the biopesticide device in vector biological control. Conclusions: The pheromone-containing infective box is a promising new tool against indoor populations of this Chagas disease vector, with the number of boxes per house being the main driver of the reduction of the total domestic bug population. This ecologically safe approach is the first proven alternative to chemical insecticides in the control of T. infestans. The advantageous reduction in vector population by delayedaction fungal biopesticides in a contained environment is here shown supported by mathematical modeling.Fil: Forlani, Lucas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Bioquímicas de La Plata ; ArgentinaFil: Pedrini, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Bioquímicas de La Plata ; ArgentinaFil: Girotti, Juan Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Bioquímicas de La Plata ; ArgentinaFil: Mijailovsky, Sergio Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Bioquímicas de La Plata ; ArgentinaFil: Cardozo, Rubén Marino. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Patología Experimental. Universidad Nacional de Salta. Facultad de Ciencias de la Salud. Instituto de Patología Experimental; Argentina. Provincia de Salta. Ministerio de Salud Pública. Coordinación de Gestión Epidemiológica; ArgentinaFil: Gentile, Alberto G.. Provincia de Salta. Ministerio de Salud Pública. Coordinación de Gestión Epidemiológica; ArgentinaFil: Hernández Suárez, Carlos. Universidad de Colima. Facultad de Ciencias; MéxicoFil: Rabinovich, Jorge Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Estudios Parasitológicos y de Vectores. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Estudios Parasitológicos y de Vectores; ArgentinaFil: Juarez, Marta Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Bioquímicas de La Plata ; Argentin

Polymer/layered silicate nanocomposite as matrix for bioinsecticide formulation.

Due to current encouragement to the use of bioinsecticides for pest control and the susceptibility of biological agents to external factors, we investigated the use of a polymer nanocomposite (PLN, polymer/ layered silicate nanocomposite) as matrix to encapsulate an entomopathogenic fungus active against pest insects of palm trees. The beads were formed by extrusion and the following variables were assessed: fungus conidial concentration (series 1: 107; series 2: 108 and series 3:109 conidia/mL) and nanolayered silicate concentration (0; 0.5; 1; 2 and 4%). The matrix was evaluated by X-ray powder diffraction and Fourier transform infrared spectroscopy and the following characteristics of the products were assessed: percent of encapsulated conidia, size distribution and polydispersity index, swelling index, formulation?s in vitro ability to release conidia and stability under different storage temperatures. PLN, whose interactions could be visualized by FTIR, proved to be a potential matrix for this fungus, because, while composed by natural substances non-toxic to the environment, it succeeded to encapsulate high amounts of conidia (series 2). A barrier effect with bentonite increase was also demonstrated by increased fungus germination time and thermal stability

Uji Efektivitas Bioinsektisida Berbahan Aktif Beauveria Bassiana (Balsamo) Vuillemin Terhadap Kutudaun Macrosiphoniela Sanborni Pada Krisan

Kutudaun Macrosiphoniela sanborni merupakan salah satu hama penting yang menimbulkan kerugian yang cukup serius pada budidaya krisan. Untuk mengendalikannya petani biasa menggunakan pestisida kimia sintetis. Selain itu pengendalian hayati berpotensi dapat menekan hama. Beauveria bassiana merupakan agens pengendali hayati yang memiliki potensi besar untuk mengendalikan beberapa hama penting tanaman hias. Biorama 1, 2, dan 3 merupakan bioinsektisida berbahan aktif B. bassiana dengan kepadatan1010 konidia per g bahan pembawa dengan bahan pembawa yang berbeda (tepung jagung, sekam, dan talk) yang dibuat di Laboratorium Biokontrol, Balai Penelitian Tanaman Hias (Balithi). Bioinsektisida tersebut terbukti efektif mengendalikan trips pada tanaman krisan. Penelitian bertujuan mengetahui efektivitas bioinsektisida Biorama 1, 2, dan 3 dalam mengendalikan kutudaun krisan. Penelitian dilaksanakan di Rumah Plastik Balithi Segunung sejak bulan Juli hingga November 2008. Bahan yang digunakan dalam penelitian ini ialah Dendranthema grandiflora kultivar Sakuntala. Perlakuan yang diuji yaitu Biorama 1 (1010 konidia/g tepung jagung), Biorama 2 (1010 konidia/g arang sekam), dan Biorama 3 (1010 konidia/g talk) masing-masing dengan konsentrasi aplikasi 5 g/l, suspensi B. bassiana dengan kepadatan 1010 konidia/ml, Natural BVR adalah bioinsektisida komersial berbahan aktif B. bassiana (1010 konidia/g bahan pembawa) dengan konsentrasi aplikasi 5 g/l sebagai kontrol positif dan air sebagai kontrol negatif. Penelitian disusun menggunakan rancangan acak kelompok terdiri atas enam perlakuan dan lima ulangan. Hasil penelitian menunjukkan bahwa bioinsektisida Biorama 1, 2, dan 3 efektif mengendalikan kutudaun M. sanborni dan efektivitasnya tidak berbeda nyata dibandingkan dengan Natural BVR dan suspensi Beauveria. Perlakuan tersebut mampu menekan serangan M. sanborni, masing-masing dengan 68,58, 60,59, dan 54,37 % secara berurutan. Bioinsektisida memberikan pengaruh nyata terhadap mortalitas kutudaun. Biorama 1 dan 2 menunjukkan keefektifan yang paling tinggi (22,30 dan 24,20%) dalam menekan kerusakan bunga dibandingkan dengan perlakuan lain dan kontrol. Implikasi dari penelitian ini ialah Biorama memiliki potensi yang besar diaplikasikan sebagai pestisida hayati ramah lingkungan pada budidaya krisan.Macrosiphoniela sanborni is one of the important pests causing serious losses on Chrysanthemum. Beauveria bassiana is a biological control agents, which has great potential to control several important pests on ornamental plants. Biorama 1, 2, and 3 are bioinsecticides containing B. bassiana as an active ingredient and made in Biological Control Laboratory of Indonesian Ornamental Crops Research Institute (IOCRI). The bioinsecticides were successfully tested and gave significant effect on controlling Chrysanthemum thrips. The study was aimed to determine the effectiveness of Biorama 1, 2, and 3 on controlling Chrysanthemum aphids. The experiment was conducted at the Plastichouse of IOCRI from July to November 2008. Plant material used in this study was Dendranthema grandiflora cv. Sakuntala. The treatments tested were Biorama 1 (1010 conidia/g corn powder), Biorama 2 (1010 conidia/g activated-carchoal), and Biorama 3 (1010 conidia/g talk) respectively with a concentration of 5 g/l, B. bassiana suspension with a density of 1010 conidia/ml, Natural BVR is a bioinsecticide with active ingredient B. bassiana, which has been commercialized as positive control in concentration 5 g/l and water as negative control. The experiment was arranged by a randomized complete block design consisted of six treatments and five replications. The results showed that Biorama 1, 2, and 3 were effective to control M. sanborni and the results did not give significant difference compared to Natural BVR and Beauveria suspension. They reduced Chrysanthemum aphids up to 68.58, 60.59, and 54,37% respectively. Bioinsecticide provide real impact on the mortality of aphids. The Biorama 1 and 2 indicated the highest effectiveness (22.3 and 24.2% respectively) on lowering to flower damage compared to other treatments and control. This results indicated that Biorama have high potential applied as an environmental friendly biopesticide on Chrysanthemum cultivation

Intracellular proteome expression during 4-n-nonylphenol biodegradation by the filamentous fungus Metarhizium robertsii

4-n-nonylphenol (4-n-NP) is an endocrine disrupting compound (EDC); pollutants that cause serious disturbances in the environment. This study shows the degradation pathway and initial proteome analysis in cultures of a fungus that actively degrades 4-n-NP, Metarhizium robertsii. The research revealed the presence of 14 4-n-NP metabolites formed as a result of the oxidation of the alkyl chain and benzene ring, which leads to the complete decomposition of the compound. Based on the trend and quantitative analysis of the formation of 4-n-NP derivatives, the best conditions for proteome analysis were established. The data collected allowed the formulation of an explanation of the microorganism's strategy towards the removal of 4-n-NP. The main groups of proteins engaged in the removal of the xenobiotic are: oxidation-reduction systems related to nitroreductase-like proteins, ROS defense systems (peroxiredoxin and superoxide dismutase), the TCA cycle and energy-related systems. Principal components analysis was applied to unidentified proteins, resulting in the formulation of three subgroups and initial classification of these proteins

Microbial Control of Black Cutworm (Lepidoptera: Noctuidae) in Turfgrass Using Agrotis ipsilon Multiple Nucleopolyhedrovirus

Agrotis ipsilon multiple nucleopolyhedrovirus (family Baculoviridae, genusNucleopolyhedrovirus, AgipMNPV), a naturally occurring baculovirus, was found infecting black cutworm, Agrotis ipsilon (Hufnagel) (Lepidoptera: Noctuidae), on central Kentucky golf courses. Laboratory, greenhouse, and field studies investigated the potential of AgipMNPV for managing black cutworms in turfgrass. The virus was highly active against first instars (LC50 = 73 occlusion bodies [OBs] per μl with 2-μl dose; 95% confidence intervals, 55–98). First instars that ingested a high lethal dose stopped feeding and died in 3–6 d as early second instars, whereas lethally infected fourth instars continued to feed and grow for 4–9 d until death. Sublethal doses consumed by third or fifth instars had little or no effect on subsequent developmental rate or pupal weight. Horizontal transmission of AgipMNPV in turfgrass plots was shown. Sprayed suspensions of AgipMNPV (5 × 108–6 × 109 OBs/m2) resulted in 75 to \u3e93% lethal infection of third or fourth instars in field plots of fairway-height creeping bentgrass, Agrostis stolonifera (Huds.), and on a golf course putting green collar. Virus spray residues (7 × 109 OBs/m2) allowed to weather on mowed and irrigated creeping bentgrass field plots significantly increased lethal infection of implanted larvae for at least 4 wk. This study, the first to evaluate a virus against a pest in turfgrass, suggests that AgipMNPV has potential as a preventive bioinsecticide targeting early instar black cutworms. Establishing a virus reservoir in the thatch and soil could suppress successive generations of that key pest on golf courses and sport fields

Teaching of Biopesticide Development as a Technoprenuership Opportunity in Plant Protection

Plant protection is an important and integral part of an agricultural production system. Plant pests and diseases\ud can cause yield losses on farm, ranging from 25 ??? 40% with a value of about US $550 billion worldwide.\ud Excessive use of synthetic pesticides has caused detrimental effects on the environment and rendered agricultural\ud production system uneconomical. Therefore, biopesticide is a promising alternative control measures in plant\ud protection. This article discusses the teaching of technopreneurship of biopesticide with several topics of\ud discussion, including: introduction to and the importance of biopesticide, demonstration of biopesticide\ud development, formulation, intellectual right, and commercialization of a new biopesticide product

Insecticide effect of zeolites on the tomato leafminer Tuta absoluta (Lepidoptera: Gelechiidae)

(1) Background: The tomato leafminer Tuta absoluta (Lepidoptera: Gelechiidae) is a key tomato insect pest. At present, it is considered to be a serious threat in various countries in Europe, North Africa, and Middle East. The extensive use and the developed resistance of T. absoluta to spinosad causes some concern, which leads to the need for alternative products. (2) Materials and Methods: Several laboratory experiments were conducted to investigate the ovicidal properties of a zeolite particle film on T. absoluta. The toxicity of three different zeolites and six zeolite formulations to T. absoluta eggs and larvae was determined using different exposure methods. (3) Results: In general, the formulated zeolites yielded higher egg and larvae mortality values, especially when the zeolite particle film was residually applied. Notable differences in mortality rates from exposure to zeolites compared to other products, such as kaolin, its formulated product Surround, and the insecticide spinosad, were observed. Kaolin and Surround exhibited little or no effect for both application methods, while the hatch rate was reduced by 95% when spinosad was applied topically. Spinosad yielded egg and larvae mortality rates of 100% for both application methods. Additionally, increased oviposition activity was observed in adults exposed to the wettable powder (WP) formulations. These WP formulations increased egg deposition, while Surround and spinosad elicited a negative oviposition response. (4) Conclusions: It can be derived that the tested products, zeolites BEA (Beta polymorph A), FAU (Faujasite), LTA (Linde type A), and their formulations, had no real insecticidal activity against the eggs of T. absoluta. Nevertheless, egg exposure to zeolites seemed to affect the development process by weakening the first instar larvae and increasing their mortality. Subsequently, based on the choice test, no significant difference was observed between the number of eggs laid on the treated leaves and control leaves