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The rules and guidelines for integrated pest management specified in Annex III, sections 2 and 3, state “General principles of integrated pest management”: Harmful organisms must be monitored by adequate methods and tools, where available. Such adequate tools should include observations in the field as well as scientifically sound warnings, forecasting and early diagnostic systems, where feasible, as well as advice from professionally qualified advisors. As part of Multiannual Programs, the Institute of Plant Protection – NRI in Poznań has been carrying out work and research for many years to develop or modify guidelines for monitoring short- and long-term forecasting of pest occurrence on crops. These guidelines are extremely helpful for farmers and advisers in determining the optimum date of chemical control of pests on plants. Regularly revised and improved the guidelines deal with pests which currently pose a threat to crops. They are developed according to the latest scientific findings and are successfully promoted among professional users and agricultural advisors. These guidelines are standardized to include descriptions of species, life cycles, symptoms of damage/infestation of crops, methods of observation targeted at warning of the need for plant protection treatments, and threshold values of harmfulness. All guidelines include extensive photographic material. Guidelines for the monitoring of pests on orchard plants, vegetables and others are prepared at the Institute of Soil Science and Plant Cultivation − NRI in Puławy and the Institute of Pomology in Skierniewice. Guidelines for about 80 pests of crops are available for public use in the on-line Pest Warning System (Platforma Sygnalizacji Agrofagów, www.agrofagi.com.pl).
This paper presents results of a study focused on using the increased predation pressure of avian raptors for biocontrol of local populations of the common vole (Microtus arvalis) in Haná (Czech Republic), a region of traditional agriculture in central Europe. Five raptor perches per hectare were installed on fields (total number of perches installed per year was 625) during two vole outbreaks in 2005/2006 and 2009/2010. The importance of the installed perches for the abundance of raptors during both outbreaks was evaluated based on the overall raptor counting along a transect. The results imply that supporting aggregations of raptors on agricultural arable land by means of installed artificial perches can increase the predation pressure on M. arvalis at the onset and during its population outbreaks. The density of raptors was low in fields without installed perches, although the local vole population was reaching its peak densities (2100 active burrows per hectare). In contrast, the density of raptors in fields with installed perches was markedly high. The results showed that the cost of biological control applied to agricultural land with an ongoing vole outbreak may sum up to approx. 50% of the rodenticide application costs (with equal efficiencies of both methods reducing the common vole abundance below the economic injury level).
The future of food security in Africa is being severely threatened due to an exponential increase in population, which is almost three times the increase of food production. Maize production is constrained by stem borers which cause significant yield losses. Yield losses can be further compounded by higher temperatures due to climate changes, which are expected to increase the population of maize stem borers. While several methods have been employed in stem borer management, there is still significant damage caused by maize stem borers. This necessitates better control methods including the adoption of recent biotechnological advancement in RNA interference (RNAi) technology. This review highlights evidence of an increase in the stem borer population as well as the foreseen decline in maize production worldwide due to the effects of climatic changes. Furthermore, we have drawn attention to improved methods that have been used to control stem borers in maize production as well as a reluctant acceptance of traditional biotechnology in Africa. Finally, we suggest the application of alternative RNA interference techniques to breed maize for efficient pest control in order to achieve food security, improve nutrition and promote sustainable maize production.
Wilt disease, caused by Fusarium oxysporum f. sp. Cubense (Foc), is one of the most important diseases of bananas. An Integrated Pest Management (IPM) strategy is a promising concept for controlling this disease. This concept must be supported with all suitable control techniques that can be compatibly and effectively utilized. Essential oils, which have been long recognized as having good fungus-toxic com­pounds, are a recommend technology which may be used to complete previous con­trol techniques. The aim of this experiment was to evaluate the antifungal activity of essential oils extracted from Cymbopogon nardus, Eugenia aromatica, Pogostemon calbin, and Vitiveria zizanoides against Foc. The experiment was conducted in the January-April time period of 2010, in the laboratory of the Indonesian Tropical Fruit Research Institute, at room temperature. The result showed that the essential oils which had been tested were able to suppress Foc mycelial growth. Essential oil ex­tracted from E. aromatica provided the strongest suppression of Foc mycelial growth, mainly when used at a volume of 9 and 18 pi. This result indicated that essential oil of E. aromatica had good potency and may be developed as a control agent against wilt disease of banana.
In the years 1993-1995 experiments on integrated pest management (IPM) were conducted. A three year experiment with winter wheat was performed to evaluate the effect of chemical control of diseases on their occurrence and grain yield, at various conditions of N fertilisation. The economical profit was analysed.
Rapessed and mustard are important oilseed crops in India. The vulnerability of the crop to mustard aphid, Lipaphis erysimi Kaltenbach is the main bottleneck in successful cultivation of this crop. In order to use insecticides at a minimum level, effectiveness of different Integrated Pest Management (IPM) modules were tested under field conditions. The module (NSKE + Chrysoperla carnea) proved most effective in reducing the aphid population in terms of socio-economic and environmental values.
The western flower thrips, Frankliniella occidentalis (Pergande) attacks a large number of crop plants. The current insecticides have caused resistance in insects and have caused outbreaks of thrips. In many instances, alternative methods of insect management and natural products, offer adequate pest control and pose fewer hazards. Several species of minute pirate bugs of the genus Orius play a significant role in the biological control of a large number of thrips species, such as F. occidentalis. In this study, the insecticidal activity of four ethanolic plant extracts (Cercis siliquastrum L., Calendula officinalis L., Peganum harmala L., Melia azedarach L.) in integration with Orius horvathi (Reuter) were evaluated for controlling F. occidentalis. The present research aimed to find plant extracts with a good impact on F. occidentalis but which have fewer side effects on O. horvathi. The results showed that P. harmala extract can be considered compatible with the natural enemy for controlling thrips. When the predatory bugs O. horvathi, were released three days after P. harmala extract spraying, the integration was more effective. While the P. harmala plant extract plays an important role in thrips control, it is necessary to consider the specified time interval between the application of the P. harmala plant extract and the release of the O. horvathi predatory bugs. The ethanolic extract of M. azedarach caused a balance between the pest population and the natural enemy. This result is very important in an Integrated Pest Management (IPM) program because this ethanolic extract of M. azedarach had lower side effects on the natural enemy. This means that an integration of plant derived chemicals and the natural enemy, O. horvathi, can effectively control thrips.
Activity of infective juveniles of Heterorhabditis bacteriophora in pre- and post-parasitic phases was studied vis-a-vis malathion treatment. The vitality of dauers (J₃) was ascertained subsequent to exposure to various sublethal concentrations of malathion (incorporated into nematode rearing medium). At concentrations of 200 and 400 ppm, the dauers showed behavioural disruptions as indicated by incomplete undulations. Anterior half of the treated dauers were mainly involved in performing undulations as compared with the posterior half. Lower concentrations showed transient effects. Infectivity tests were conducted using filter paper bioassay. The parasitization rate in Spodoptera litura larvae (L₆) decreased with increasing concentrations of malathion. Post-parasitic juveniles were examined daily for assessing the viability of H. bacteriophora after the treatment of malathion. Because of the cogent infectivity after malathion-exposure, it is suggested, that this nematode might be used as an agent in IPM. It appears a promising candidate.
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