Biological Pest Control - Science topic

Which bacteria are used for pest control and how do organic farmers use biological pest control?

In this last time everyone talks about organic farming, this has several reasons related mainly to the effect of chemical pesticides on human health, biodiversity, and the environment in general. For organic plant nutrition it is possible to make it easily by the amendment and the bio-fertiliser. Pest management is always difficult, especially when working in an open environment and releasing auxiliary insects for biological pest control. So the question arises:

How to implement a biological management strategy for insect pests in an agricultural field?

There are many entomopathogenic fungi available like Metarhizium, Beauveria , Verticillium which are used for control of several insects. It is apparent that these fungi do not establish well in the crop ecosystem, thus giving low level control of insects. Is there any way to keep these fungi thrive in the crop ecosystem. And what are the factors that affect the survival of these fungi in crop ecosystem. Sustained multiplication of these pathogens in crop ecosystem till the end of crop life cycle is very crucial. How do we ensure this?

These mites were found on strawberry plants (Belgium). Anybody an idea of the Family or Superfamily? Or recommended keys of mesostigmata?

According to the popular model proposed, Cry1A toxin binds with Aminopeptidase N to form pores in the membrane. How the mechanism for binding toxins to receptors and how these receptors change the conformation of toxins so that they can form pores I still have not found a complete and clear explanation.

the defense mechanism of plant is really a wondrous mechanism if it can be utilize it will best way to deal with management practice for crop protection.

How can I implant ANFIS as a controller in MATLAB/SIMULINK simulation for sit to stand movement supported with functional electrical stimulation in paraplegics. I think it will be inverse dynamic model and I should use model base controller

Interaction among entomopathogenic nematodes and plant pathogens

Do you have experiences with alternatives to synthetic pyrethroids in tea pest control? Tea is a very often per year sprayed plant with synthetic pyrethroids against damaging insects. So insectizide resistance has become high and pestizide residues in tea are possible. Which good alternatives methodes are there? Best thanks for answers! J HUMER

Hello,

we are growing tomato in the greenhouse. Macrolophus pygmaeus is our main tool to control pests. We are at the moment for some un-known reason struggling to build up a strong popoulation of Macrolophus. Some advisor told us that it could be due to the Entomophtora fungi.

I would like to konw how to confirm Entomophtora in Macrolophus population? Is there some good research paper where I can read abou ti?

Hello,

we are facing to some problem with Macrolophus pygmaeus population in the greenhouse. We have introduce Macrolophus bug into the tomato greenhouse 5 months ago and reintroduce it about 4 weeks ago. We haven´t used any chemical pesticides, temperature is optimal, we even feed them by Ephestia eggs. So far, the development is very weak and we are in the risk of some pest probem (whiteflies).

What could have caused such problem to Macrolophus population? Could it be Entomophtora?

Some ideas how to help Macrolophus to build up a strong population?

Thank you

What are some applied methods for controlling Zeuzera pyrina, the leopard moth, a key pest of walnut orchards?

Gardeners in Iran have recently had many problems with this pest. Current control methods include:

These have been used, but have low effectiveness.

I found the grasshopper Poecilocloeus coffeaphilus (Orthoptera: Acrididae) in Colombia parasitized by nematodes of the genus Mermis sp. (Mermithidae). If you know some breeding protocol on different host like Lepidoptera larva (Galleria) I appreciate.

Is there any available publication with support?

Economic injury level (EIL) and economic threshold (ET) of tomato leafminer, Tuta absoluta?

Growth and Productivity of some Vegetable Crops as Affected by Chemical and Biological Control of White-rot Disease.

In my research plot of mungbean I saw the crops were infested with aphid and mealy bugs. In the specific plant affected with aphids were also densely infested with ants. Are those ants feeding upon these aphids????

I'm trying to make a culture of an unknown Nephus sp from Southern Africa to study their life cycle. Currently using just citrus mealybugs (Planococcus citri) to feed them. I'm struggling to find resources to identify them at their different life stages. Also having troubles with the scaling of my project, the ladybirds are really small and difficult to remove from the mealybugs

I am going to be working with Bemisia tabaci management in green house condition. What may be your suggestion in regards of bio-rational or eco-friendly treatments (including botanicals, biopesticides, safer chemicals etc.) to be added in my experiment. 

Working with an Aquaponics system in the Dominican Republic and we are having trouble with aphid and snails. Any ideas for organic pest management that will not harm the fish in the system? 

I am searching for the overwintering place of the gall midge and its overwintering phase as well. According to literature, some Cecidomyiid species spend winter as larvae in the galls and some of them spend on the ground. I didn't find any reference about overwintering of Feltiella acarisuga and I urgently need to find them. I collected larvae and pupae already during the summer on leaves and know the predator habitat well. But I don't know how to find its overwintering phase.

Dose anybody know about effective control of Cydalima_Perspectalis in forest(except BT)?such as botanical pesticide (neem oil) and another question is:what is the method of insecticide bioassay in forest

thanks

I am looking for one (or more) populations of T. embryophagum egg parasitoids for carrying out some lab experiments,  and was wondering if anyone has a population that they would be willing to share with me?

I am a neophyte in research,,,just doing science investigatory project for my students..i have attached our research plan..please comment on what should i change

PLOS ONE is currently searching for an editor for a review of our paper entitled "The Dissemination of Imidacloprid from Granular Bait in Dairy Manure, a Breeding Substrate of Filth Flies and their Natural Enemies." This paper analyzed imidacloprid residues present in diary cow manure by HPLC and mass spec. The topics in the paper have implications about the environmental fate of imidacloprid, a widely used insecticide, and potential ramifications it might have on natural enemies of filth flies in dairy manure. If you are interested, please contact me by sending a message here on Researchgate. Thanks.

I am working on Arthropods which are potent bio-control agents of insect pests in agro-ecosystems. I have 4 such Arthropods which are from different genera and having potential to control insect pests. I want to compare those predators. Is it feasible to go for RAPD marker?

Is there any available artificial diet for rearing Riptortus pedestris? If yes, could anyone give me a feed formulation and the procedure details for rearing this bug?

In literature, pesticide, biopesticide and biocide these terms are most commonly used in crop protection where-

* Biocide has been represented both synthetic and natural products those are able to kill or control living beings and it seems that all pesticide and biopesticide (active ingredients) could be represented as biocide

* In terms of pesticide, the synthetic product used to control pest, and lastly

* Biopesticide is natural product able to control pest

Therefore, I need opinion regarding these terms and their use in manuscript or journal article.

I'm looking for someone with who has worked with Mealybug pests in Apples- population dynamics after egg hatch, are they vectors for things other than Little Cherry Disease, control recommendations, what are the threshold limits for infestations, etc ?

Any help would be greatly appreciated.

Tomato plants used in whitefly (Bemisia tabaci) rearing got infested by the two-spotted mite. If I release predatory mite (Phytoseiulus persimilis) then will they cause any problem to whiteflies? 

Pheromone traps are widely available, easy in use  and also they are eco-friendly measures .Secific traps are used for specific insect and pest .How the traps can be used in effective way for controlling insect and pest population?

This larva was found in an almond fruit.

Good day! My partner and I are doing a research project on the feasibility of using virgin coconut oil (VCO) as an alternative ingredient in pesticides in relation to the reduction/elimination of bed bug populations (particularly Cimex lectularius). We will be comparing the efficacy of the VCO pesticide and traditional chemical pesticides in a controlled laboratory set-up. Additionally, we will measure the fecundity, reproductive rate, and mortality rate of C. lectularius  when the pesticides are applied. Unfortunately, there are limited academic resources, studies, and experiments done on bed bugs. Thus, I would like to ask, is there a particular stage (egg, nymph, or adult) where any form of pesticide (natural or synthetic) can effectively reduce, or even eliminate, bed bug populations?

I do intend to carry out a pilot test on the efficiency of barn owl Tyto alba to reduce rodent infestation in urban affected tropical zones. I would like to know the most challenging factors faced by anyone who ever had done such project.  Give advice and share the results, please. Many thanks. 

dear all i want a soft copy of book painter book on Host Plant Resistance to Insect

I would like to test them as non-target species in a biocontrol project on Drosophila suzukii. 

I already have some species in my laboratory:

- D. melanogaster

- D. immigrans

- D. busckii

- D. subobscura

- D. hydei

Thanks a lot for your help.

I am looking for those with toxic effects on caterpillars

We want to work on reduce mites infestation in palm trees through study some genes that may have role in control this pest.

How can I mass rear Tetranychus urtica on an artificial diet without using plants?

I want to mass rear Tetranychus urtica in laboratory on an artificial diet without using plants. Has anyone known any method to formulate a diet that could be used?

What is the best method of controlling the insect pests in stored agricultural materials?

Other than insecticide-producing, more specifically other than Bt(Bacillus thuringiensis). What would be the best transgenic plants in terms of being environmentally friendly, as well as from an economic standpoint?

What is the carrying capacity of Myzus persicae in potato in general?

How many aphids are considered as highly infesting?

In ecological/organic farming several  formulations with non native microorganisms are used for pest and disease control some examples are Trichoderma spp, Metarhizium, BT, NPV, Spinosad, Beauveria, Paecilomycities, Pseudomonas, Verticilium etc.  Are they don't have any side effects on the native soil fauna( including earthworms) and on the beneficial insects ( honey bee, lady bird beetle etc.)and also are they safe for human being as the farmers and labours work in the field ?.  further  are their efficacy enhanced with the use of neem oil or any other botanicals.

Cutworms problems in pine tree nurseries.

Ash whitefly , Siphoninus phillyreae , is one of the important pests of fruits and recently shade trees in some parts of Iran. Over seventeen plant species (including acer, ash, elm, apple, quince, pear, sweet lime, sure lime, orange, tangerine, peach, nectarine, apricot, hawthorn, plum, almond and pomegranate) were identified as its host plants that ash was the most important. Adult and nymphs of the pest feed on sap from late May to late November and cause direct economic damages to host plants. The population of the pest on ash trees reach to its peak in late July.

We decide to refuse from chemical control for their environmental problems (contamination, pest resistance development and etc.). The  period of damage on trees of urban Landscape is less than two months and avoidance may be practical.

Mustard plant and wheat were inter-cropped. The damage was not noticed but only gathering of larva were there

SHB live inside the stem and their galleries are exposed to environment to small cavity.

Red Palm weevil is new pest in Iraq , first record of this insect was in 2015,so i would like to knew about there control and there detection.

My Capsicum plants are around 20-30 days old and they are loaded with some kind of insect with a white powdry mass surrounding them. The insects are mostly restricted to both the surfaces of the leaves plus the pedicel of the flower and other floral parts?

Can any one help identify this and suggest the remedial measures?

Thanks

The carrier material should have some properties like nontoxic, eco-friendly, cheap, no harmful effect on plant health and biocontrol agent, easy availability

I am a PhD research fellow working on development of  fungal based biopesticides for management of cowpea aphid (Aphis craccivora Koch) and this course would add value to my research work as a junior researcher and the details on when and where it will be held and possible sources of funding to attend the course would be very useful for me.

The title should include by predators and parasitoids?

The goals should deal only with predators and parasitoids, as indicated in the title? Not with natural enemies in general which include entomopathogenic organisms that are not targeted?

My topic is using microorganism extractions that isolated from the soil and development of compounds for the control of insect pests.

This pest losses pomegranate yield in Iran and we're looking for the best way to control that.

Thanks

Hello , 

I'd like to if there are others -new- biological control means of Schistorcea gregaria ,Locusta migratoria ?

Best regards 

Use fungal bio-control agent against wireworm (true and false) in sweetpotato crop is my potential PhD project. However, project has been affected due to not finding any wireworms around my local area.

Dear friends

Quality assessment of entomophagous arthropods used in augmentative biological control is one of the main concerns after their mass production. Economic production and quality are two important parameters that affecting biological contorol. Results from experiments with different kinds of diets with or without insect components, developed for parasitoids and predators, are examined. Morphological traits as well as development and reproduction parameters used for comparisons between in vivo- and in vitro-grown arthropods are discussed. Morphological characters include body size and weight and the occurrence of abnormalities. Immature development is assessed by measuring duration and survival rates of the different stages. Sex ratio and symbiont association, fecundity-fertility and longevity are compared as reproduction parameters. It is important to consider biochemical parameters, such as protein, lipid and carbohydrate content, for quality control. These parameters may also indicate the deficiency or excess in a particular nutritional component. Behavioural and genetic parameters are considered as well. The establishment of relationships between certain parameters, e.g. between body size and fecundity or longevity, may help in simplifying quality control procedures. The ultimate quality criterion for an artificially reared natural enemy is its capacity to reduce pest populations, which can be evaluated by measuring the predation efficiency or the parasitization rate under laboratory or field conditions.

All plants respond to herbivore-inflicted damage with the enhanced emission of volatile organic compounds (VOCs), and plants in numerous taxa also respond with the secretion of extrafloral nectar (EFN) . Both VOCs and EFN attract adult parasitoids and predators (hereinafter collectively termed ‘carnivores’), an effect that can significantly reduce herbivore pressure on wild plants . Nevertheless, relatively few attempts have made conscious use of VOCs or EFN for biological pest control  and, to the best of our knowledge, classical breeding has never aimed to improve anti-herbivore defense via VOCs or EFN 1 for the first attempt to genetically engineer wheat (Triticum aestivum) . How and to what degree these traits can be optimized to allow better biological control of pests and crop diseases?

Methyl salicylate has been known to release by many plants when infected with different insects, cucumber when infected with mite also releases methyl salicylate, does any paper cited that when cucumber infected with cotton aphid could release methyl salicylate?

I urgently need Bti standard for research purpose. 

We isolate this fungus from black bean aphid.  By our little knowledge we suspect this is Beauveria sp! 

I am looking to purchase an olfactometer similar to the one shown in the attached picture. Any help would be greatly appreciated.

Thanks!

These samples are meat balls with some structures. The idea is someone that work with taxonomy of caterpillars. I have photographies of these samples and if someone have interest, I could send these images.

Thanks.

Bemisia tabaci is becoming a serious threat again in cotton. The resurgence issue if any related to present day insecticides viewed to be seriously.Post your experience.

A. glabripennis already affected the growth of many trees, in some areas Shandong of China. For example, sycamore, chinaberry and willow, especially sycamore.

Longicorn larvae bore into the xylem of trees, pesticides cannot come into contact with it. This causes a lot of trouble to prevention. Is there a better way to control it?

methods and materials

Some of the wheat stem sawfly infested barley stem, part of  inter-node, is full of liquid substance. As you can see in pictures. Some larvae are dead inside the inter-node, and some of them are still alive. What would be the reason behind it? Is there any way to explore plant response against wheat stem sawfly, Cephus cinctus? or just something else? Your suggestions/ comments are highly appreciated.

I would like to test them as an out-group for a non-target experiment in a biocontrol project on Drosophila suzukii.

Thanks for your help.

I read and watched a documentary on insects and found that the Matabele ants of the Magaponera are specialists in feeding on termites and was wondering if we could introduce these ants in the Philippines to control termite populations. Answers are very much appreciated!

Suggest me some chemical or organics to recover the leaves.

Do any of you know about recent research studying the role of bats as biocontrol of pests in agriculture?

Chrysoperla is a generalist predator of many insect pests, however the eggs are parasitized  by several species of microhymenopteran wasps like the one in the photograph. I wonder the impact of these egg parasitoids in the predatory efectiveness of Chrysoperla to controlling insect pests. Any idea about the ID of this parasitoid from Colombia ? thank you.

I found this lady bird beetle on unidentified weed species in Shimla, India. The size is largest I have seen, 12 X 10 mm.

 I need a commercial formulation  specific for locust control

Thank you.