|
|
|
| Registros recuperados: 58 | |
|
|
| Prabhu,Anne Sitarama; Filippi,Marta Cristina; Zimmermann,Francisco José Pfeilsticker. |
| Four field trials were conducted, from 1995 to 1997, with the objective of studying the response of four upland cultivars to foliar fungicide application in relation to panicle blast control, grain yield and sustainability. Differential disease control and yield response of cultivars to fungicide treatment were obtained. Losses in grain yield of cultivars IAC 202, Caiapó, Rio Paranaíba and Araguaia due to panicle blast were 44.8%, 27.4%, 24.4% and 18.2%, respectively. Two applications of tricyclazole or benomyl controlled panicle blast, as indicated by lower values of disease progress curve and relative panicle blast severity, and increased grain yield of the cultivar IAC 202. The losses in 100 panicle grain weight and grain yield were significantly... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa; Yield factors; Pest control; Chemical control. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2003000100002 |
| |
|
|
| OLIVEIRA,LENITA JACOB; HOFFMANN-CAMPO,CLARA BEATRIZ; GARCIA,MARIA ALICE. |
| To evaluate the effect of soil management systems on population of white grubs, (Phyllophaga cuyabana Moser), and on its damage in soybean, experiments were set up under no-tillage and conventional tillage (one disk plow, and a leveling disk harrow) areas. Primary tillage equipment, used in other soil management systems, such as moldboard plow, disk plow, chisel plow and heavy duty disk harrow were also tested. Fluctuation of P. cuyabana population and the extent of its damage to soybean was similar under no-tillage and conventional tillage systems. Results comparing a range of primary tillage equipment showed that it affected soil insect populations differently, depending on the time during the season in which tillage was executed. Larval mortality could... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Coleoptera; Scarabaeoidea; Melolonthidae; Phyllophaga cuyabana; Cultural control; Pest control. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2000000500004 |
| |
|
| |
|
|
| Tisdell, Clement A.. |
| Some wildlife species are agricultural pests but these populations are often valued by other than agriculturalists. For non-farmers, the population levels of such wildlife are frequently pure public goods. This is one source of market failure in the economically optimal social control of an agricultural pest of this type. Secondly, if the species is geographically mobile, externalities occur between farmers in the control of the species, and this reduces the incentives of farmers as individuals to control the pest species. It is shown that depending on the relative strength of these opposing types of market failure, farmers may excessively reduce or insufficiently decrease the population of a species from a social economic point of view. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Agriculture; Market failure; Mobility of pests; Pest control; Pure public goods.; Environmental Economics and Policy; Q57. |
| Ano: 2010 |
URL: http://purl.umn.edu/90467 |
| |
|
|
| Tisdell, Clement A.. |
| Some wildlife species are agricultural pests (or otherwise a problem) but their populations are often valued by other than agriculturalists or by those not adversely affected by them directly. For non-farmers, the population levels of such wildlife are frequently pure public goods. This is one source of market failure in the economically optimal social control of an (agricultural) pest of this type. Secondly, if the species is geographically mobile, externalities occur between farmers (or other individuals) in the control of the species, and individuals ignore these spillovers in controlling pest species. Simple analysis is used to show that depending on the relative strength of these opposing types of market failure, farmers (or others) may excessively... |
| Tipo: Working Paper |
Palavras-chave: Agriculture; Market failure; Pest control; Pure public goods; West Bengal; Wildlife; Zoonoses.; Environmental Economics and Policy. |
| Ano: 2011 |
URL: http://purl.umn.edu/122727 |
| |
|
|
| De Groote, Hugo; Wangare, Lucy; Kanampiu, Fred; Odendo, Martins; Friesen, Dennis. |
| Striga is an obligate parasitic weed attacking cereal crops in Subsaharan Africa. In Western Kenya, it is identified by farmers as their major pest problem in maize. A new technology, consisting of seed coating of herbicide tolerant maize varieties, has prove to be very effective in farmer fields. To bring this technology to the farmer, a sustainable delivery system needs to be developed, preferably through the private sector. To help of the seed companies develop a strategy, the potential market for this technology is hereby calculated, combines different data sources into a Geographic Information System (GIS). Superimposing secondary data, field surveys, agricultural statistics and farmer surveys makes it possible to clearly identify the Striga-prone... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Maize; Striga; Africa; Weeds; Pest control; Crop Production/Industries; Q12. |
| Ano: 2005 |
URL: http://purl.umn.edu/24690 |
| |
|
|
| Davis, Rex; Tisdell, Clement A.. |
| Outlines economic threshold models developed by various authors as an aid to decision-making about pest management. Particular attention is given to the models proposed by Stern et al. (1959) and by Headley (1972) and the major differences in their concepts of the economic threshold. Limitations and scope for applying these models is discussed as well as differences in the extent of their applications are reviewed. After considering general issues in this respect, particular matters are given attention such as difficulties raised by complexities in the nature of yield loss function due to uncertainty in pest densities, the presence of multiple-pests, and the occurrence of pesticide resistance. An extension is provided for multiple species pest models to... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Pest control; Pest management; Livestock; Livestock Production/Industries. |
| Ano: 2001 |
URL: http://purl.umn.edu/48381 |
| |
|
| |
|
|
| Viebrantz,Priscila C.; Radunz,Lauri L.; Dionello,Rafael G.. |
| ABSTRACT Due to the need to improve the quality and safety of foods, chemical methods used to control grain pests have been replaced by alternative methods. For example, modified atmosphere within the storage units has been used. Therefore, the objective was to evaluate maize grain quality and mortality of insects of the species Sitophilus zeamais and Tribolium castaneum in hermetic and non-hermetic environments for 50 days of storage. The hermetic units consisted of polyethylene "bags" with capacity for 60 kg. A cage with 20 adults of each species and 200 g of maize was placed inside each unit. The oxygen level was quantified every five days. Evaluations of insect mortality and survival occurred at 10, 20, 30, 40 and 50 days of storage. At 0, 30 and 50... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grain storage; Modified atmosphere; Pest control; Fungal incidence; Density. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000500487 |
| |
|
|
| Castro,Mariana Monteiro de; Prezoto,Helba Helena Santos; Fernandes,Elisa Furtado; Bueno,Odair Correa; Prezoto,Fábio. |
| Ants inhabit several types of natural and urban habitats, where they successfully nest. In urban environments, the hospitals should be considered priority for studies, as ants pose risks to human health due to their pathogen carrying potential. We aimed at surveying the literature about studies on ants in hospital settings in Brazil in the past 20 years. We found 40 papers in 22 journals, the first one published in 1993. Among them, 26 papers assessed pathogenic microorganisms on ants. We recorded 59 ant species, being Tapinoma melanocephalumthe most common. The Minas Gerais and São Paulo states had the largest number of published papers. Mato Grosso do Sul and Rio Grande do Sul showed the highest number of species. Exotic ant species were recorded in all... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cross infection; Disease transmission; Microorganisms; Pest control. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262015000100077 |
| |
|
|
| Ramires,Eduardo N.; Peracetta,Luiz F.; Nogas,Cláudio; Navarro-Silva,Mário A.; Paladini,Edson P.. |
| We introduce a new, high quality, low cost and versatile LEDs-based handset device that emits high power UV and white light, which can be used interchangeably. It offers power control and has long battery life. Even though it is optimized to detect and collect scorpions under low light conditions, it can also be used with other groups of fluorescent organisms. The device achieved superior performance in field and laboratory trials when compared with a 12 LEDs low power UV flashlight, and a 46 W black fluorescent light lamp, to locate Tityus serrulatus Lutz & Mello, 1922. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Buthidae; Fluorescence; Invertebrate collecting methods; Pest control. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000400015 |
| |
|
|
| Santos,Adriano Jorge Nunes dos; Broglio,Sônia Maria Forti; Dias-Pini,Nivia da Silva; Souza,Leilianne Alves de; Barbosa,Tiago Jorge de Araújo. |
| The stingless bee Trigona spinipes (Fabricius, 1793) (Hymenoptera: Apidae) is an important pollinator for various crops, but constitutes an occasional pest of other plant species since it causes injury to leaves, stems, flowers and fruits while collecting nest materials. The aim of the present study was to determine the damage caused by T. spinipes to a broccoli (Brassica oleracea L. var. italica, Brassicaceae) growing on an organic farm. A significant number of plants (72.5 %) presented damaged inflorescences, while 39% of all of the inflorescences suffered some degree of injury. The activities of T. spinipes caused scarifications on the stems of the inflorescences, and these typically evolved to epidermal cicatrices up to 10 mm wide. In some cases, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Trigona spinipes; Occasional pest; Pest control. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162012000400008 |
| |
|
| |
|
| |
|
|
| Rabbani, Muhammad Ashik-E-; Basir, Md. Samiul; Aliuzzaman, Md.; Rahman, Anisur. |
| The use of chemical pesticides in the agricultural field is a common practice for pest management, which is hazardous for human health with the environment and often used more than the prescribed amount. The solar light trap as a renewable and environment-friendly device is more popular. This study was undertaken with a specific objective of selecting the appropriate light color, installation height, and operating power for the solar light trap where LED bulbs are used. Three solar light traps using three colors of bulbs (white, blue and yellow) were operated at three different powers, i.e.1-Watt, 2-Watt, and 2.5-Watt, and each of them was set at three different heights such as 1.0m, 1.25m, and 1.5m in the light traps to find the best color, height, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bulb color; Optimum height; Pest control; Solar light trap. |
| Ano: 2022 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6807 |
| |
|
|
| Alves,Mariangela; Boscolo,Maurício; Fernandes,Odair Aparecido; Nunes,Maria Andréia. |
| The B-strain of Bemisia tabaci Gennadius is a key pest of several crops and chemical control is the main control method used by growers, although reduction in efficacy due to insecticide resistance has already been reported. The aim of this work was to investigate the insecticidal effect of an array of synthetic sucrose esters with the aliphatic and aromatic groups on whitefly adults. Sucrose butyrate, caprate, octanoate, palmitate, oleate, octaacetate, phthalate, benzoate, and sucrose diacetate hexaisobutyrate were tested. The solutions were prepared and applied on the adults caught on yellow sticky traps using the Potter spray tower. Long-chains sucrose aliphatic esters were more effective against the silverleaf whiteflies and the highest mortality was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sucroesters; Silverleaf whitefly; Pest control; Integrated pest management. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000600005 |
| |
|
|
| Moura,Alexandre P; Carvalho,Geraldo A; Botton,Marcos. |
| Temperate fruit crops are an important economic activity for growers in southern Brazil. However, several pest species are associated to apple (Malus domestica Borkh.) crops in Brazil. Pesticides are largely used to control them and one way to change this is to combine selective pesticides and predator insects. The goal of this research was to evaluate the effects of the abamectin, carbaryl, fenitrothion, methidathion, sulfur, and trichlorfon pesticides on the survival and stage length of larvae and pupae, adult oviposition from treated larvae, and hatched eggs of two Chrysoperla externa (Hagen, 1861) (Neuroptera: Chrysopidae) populations. The compounds were sprayed on glass plates in accordance with the International Organization for Biological Control... |
| Tipo: Journal article |
Palavras-chave: Green lacewings; Insecticides; Natural enemies; Pest control; Side effects. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000200009 |
| |
|
| |
| Registros recuperados: 58 | |
|
|
|
