Sentences with phrase «insect pests such»

Increased weed and pest pressure associated with longer growing seasons and warmer winters will be an increasingly important challenge; there are already examples of earlier arrival and increased populations of some insect pests such as corn earworm.64 Furthermore, many of the most aggressive weeds, such as kudzu, benefit more than crop plants from higher atmospheric carbon dioxide, and become more resistant to herbicide control.72 Many weeds respond better than most cash crops to increasing carbon dioxide concentrations, particularly «invasive» weeds with the so - called C3 photosynthetic pathway, and with rapid and expansive growth patterns, including large allocations of below - ground biomass, such as roots.73 Research also suggests that glyphosate (for example, Roundup), the most widely - used herbicide in the United States, loses its efficacy on weeds grown at the increased carbon dioxide levels likely to occur in the coming decades.74 To date, all weed / crop competition studies where the photosynthetic pathway is the same for both species favor weed growth over crop growth as carbon dioxide is increased.72

Farmers also face threats from viruses, including Cassava Brown Streak; Cucumber Mosaic Virus; African Cassava Mosaic Virus; and Cotton Leaf Curl, as well as major insect pests such as weevils and stem, fruit, and grain borers, and insects that serve as vectors for disease transmission.

Bracovirus genes can be detected in the genomes of several species of butterfly and moth, including the famous Monarch (Danaus plexippus), the silkworm (Bombyx mori) and insect pests such as the Fall Armyworm (Spodoptera frugiperda) and the Beet Armyworm (Spodoptera exigua).

Not exact matches

Organic farmers also use numerous integrative pest management techniques which promote environments that support beneficial insects such as pollinators by providing them with habitat, and use farming methods such as crop rotation which provide a diversity of nutritious floral food sources to reduce the prospect of malnutrition.

Organic farmers have a very limited number of materials in their toolbox to manage pests such as insects and weeds.

They are applied to crop seeds such as maize (corn) and soya beans, and permeate the plants, protecting them from insect pests.

He explains that «This research could provide valuable insights in the way that the behaviour and life cycle of harmful insects, such as agricultural pests and disease vectors, is governed by temperature.

The Food and Drug Administration, recognizing the ubiquity of such insect pests, sets limits on acceptable levels of bugs rather than banning them completely from food.

The rice water weevil, such as this adult on a rice leaf, is one of the most troublesome insect pests in rice, but seed treatments have proven to be effective in controlling them.

Meanwhile, the bacterial toxin, a protein called CryIA (b), is highly specific to certain insect pests, such as the European corn borer and the spruce budworm.

Recent studies in Jamaica's «high mountain» coffee farms suggest that introducing insect - eating warblers such as the black - throated blue warbler (Setophaga caerulescens, inset, about to snag a coffee berry borer) onto plantations can keep the pests in check.

One such insect, the sap - sucking aphid (a common pest in gardens), has an effective escape plan, though: the bugs detect an approaching herbivore's breath and simply drop off the plant before it's eaten.Researchers at the University of Haifa at Oranim, Israel first noticed this phenomenon when they allowed a goat to feed on aphid - infested alfalfa plants — 65 percent of the plant pests simultaneously dropped to the ground just before the vegetation was devoured.The team suspected that several cues might have motivated the mass dropping, including the sudden shadow cast by the goat, plant - shaking triggered by the munching marauder and / or the herbivore's exhalations.

She was curious about whether zebra stripes were attractive to tabanids, a family of insects that includes tsetse flies and horseflies — notorious pests that can transmit illnesses such as sleeping sickness and Chagas disease.

The conservation of such insectivores is also beneficial for the coffee farmers as they contribute to insect pest control.»

Ekong pointed to the International Centre for Insect Physiology and Ecology in Nairobi as a regional centre of excellence that is conducting significant fundamental research in such areas as chemical communications in insects, while also developing applications in pest management

Not only have such adaptations contributed to the vast diversification of insects in the course of evolution, they also support the success of agricultural pests specialized on certain crop plants that jeopardize crop yields every year.

They also pose natural and economic threats, competing with native ants and pollinators, and protecting plant pests such as aphids and scales in return for the sweet honeydew secretions that these insects produce.

New details about the protein's function could help fight parasitic diseases, such as malaria, and boost efforts to control insect pests.

The hope is that the method could be used to engineer populations of insects in the wild, with the goal of reducing mosquito - borne diseases such as malaria or dengue fever, or controlling agricultural pests, such as those that transmit citrus greening disease.

«Aside from their key role in feeding on pest insect species, their silk is being developed to make specialist clothing such as bullet - proof vests and their venom can be used in pain relief.

Dogs also were at higher risk of lymphoma if their owners used self - applied insect - growth regulators on their yards, such as Nylar, Precor and Gentrol, which control cockroaches, fleas and other pests.

«Since the mid-1940's over 200 basic chemicals have been created for use in killing insects, weeds, rodents, and other organisms described in the modern vernacular as «pests»... These sprays, dusts, and aerosols are now applied almost universally to farms, gardens, forests, and homes... Can anyone believe it is possible to lay down such a barrage of poisons on the surface of the earth without making it unfit for all life?»

changing migration patterns of birds and other animals that affect by direct means (foraging, excrement) and indirect means (control of pests, affects on populations of beneficial insects such as bee populations and so on) 5.

The excess heat in the air can be linked to increased frequency of heat waves across the globe, wider distribution of insect pests (e.g., pine beetle in the northwest U.S.), and various health - related issues such as the spread of tropical diseases further north into the U.S.

Dill: Dill is said to attract beneficial insects and to help repel pests such as aphids, and may improve the flavors of vegetables grown nearby.

Onions: Onions don't take up a lot of room above the ground, and are said to deter many common insect pests in the garden, such as aphids, slugs, and cabbage worms, making them a good companion plant for peppers.

There are some, very limited policies that do cover damage from insects, infestation and pests, but this coverage is specifically called out within the policy and the cost for such coverage may be costly.

A forceful spray of water from a garden hose may knock down invading insects, or you can use the least toxic insecticidal soap available to clear out pests such as aphids and spider mites.

You can't cut corners in a tropical area because pests such as insects and rodents can wreak havoc.