Sentences with phrase «insect pest population»

Not exact matches

California winegrowers use cover crops and compost in the vineyards to enrich healthy soils with biomass and vibrant populations of microbes and worms and to prevent erosion and attract helpful insects that prey on pests.

Since GR2E Golden Rice does not possess any introduced or altered resistance to insect pests or diseases, there are no selection pressures that could drive the evolution of resistant pest populations, and no anticipated changes in current pest control practices.

Organic farmers also rely on diverse populations of soil organisms, beneficial insects, and birds to keep pests under control.

«Recent studies found that scale insect populations increase on oak and maple trees in warmer urban areas, which raises the possibility that these pests may also increase with global warming,» says Dr. Elsa Youngsteadt, a research associate at NC State and lead author of a paper on the work.

The initiative, called Safe Genes, comes at a time when so - called «gene drive» systems, which override the standard rules of gene inheritance and natural selection, are raising hopes among some scientists that the technology could alter or suppress populations of disease - carrying insects or other pests in as few as 20 generations.

Synthetic incompatibility has applications in controlling or eradicating invasive species, crop pests and disease - carrying insects as well as preventing altered genes from escaping from genetically modified crops into other plant populations.

The rapid spread of engineered genes through a population may allow researchers to make mosquitoes unable to spread malaria or other diseases, to sterilize the insects, or to clear pests or invasive species out of places where they are not wanted (SN: 12/26/15, p. 6;

Recent data published in the international journal Comparative Cytogenetics by Mauro Mandrioli, Federica Zanasi and Gian Carlo Manicardi of the University of Modena and Reggio Emilia (Italy) clearly showed that populations of the green peach aphid Myzus persicae (one of the most dangerous pest crop insects in the world) may have unusual karyotypes due to chromosomal fragmentations and / or rearrangements also within the same individual.

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.

The Committee has been investigating the use of GM insect technologies to fight infectious disease and to control agricultural pests as the technology now exists to render insects unable to transmit diseases, and to reduce insect populations to minimise their threat to animals and crops.

When pest populations get out of balance, growers will try various options like insect predators, mating disruption, traps, and barriers.

Maca has also been used to stimulate population growth of pest - controlling insects, which helps to avoid the use of chemical pesticides.

By feasting on insects, the bats help keep pest populations under control in the rain forest.

Other aspects of global warming's broad footprint on the world's ecosystems include changes in the abundance of more than 80 percent of the thousands of species included in population studies; major poleward shifts in living ranges as warm regions become hot, and cold regions become warmer; major increases (in the south) and decreases (in the north) of the abundance of plankton, which forms the critical base of the ocean's food chain; the transformation of previously innocuous insect species like the Aspen leaf miner into pests that have damaged millions of acres of forest; and an increase in the range and abundance of human pathogens like the cholera - causing bacteria Vibrio, the mosquito - borne dengue virus, and the ticks that carry Lyme disease - causing bacteria.

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.

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

We saw virtually no differences between the biology of insect populations reared on the GM cotton and the non-GM cotton... We have indeed seen a dramatic boost to India's cotton, but we had always anticipated that at some point in time, we'll encounter pests that can withstand the modified plants.

The video above is just one example of how organic farmers encourage natural checks and balances to control insects and pests — in this case stringing up bird houses across a dairy farm to encourage swallows, which in turn keep down the fly population.

You also need to work less to protect your garden from pests, as both insects and animal populations will taper off in fall.