Welcome To Website IAS

Hot news
Achievement

Independence Award

- First Rank - Second Rank - Third Rank

Labour Award

- First Rank - Second Rank -Third Rank

National Award

 - Study on food stuff for animal(2005)

 - Study on rice breeding for export and domestic consumption(2005)

VIFOTEC Award

- Hybrid Maize by Single Cross V2002 (2003)

- Tomato Grafting to Manage Ralstonia Disease(2005)

- Cassava variety KM140(2010)

Centres
Website links
Vietnamese calendar
Library
Visitors summary
 Curently online :  4
 Total visitors :  7438366

Why insect pests love monocultures, and how plant diversity could change that
Wednesday, 2016/10/19 | 08:59:59

Left to its own defenses, a farm field growing a variety of plants tends to attract fewer insect pests than a field growing just one type of crop. While scientists and farmers have noted that difference for years, the reasons behind it have been poorly understood.

 

A western tussock moth caterpillar crawls along a plant, feasting on its leaves.
Credit: Moria Robinson/UC Davis
 

A study led by the University of California, Davis, and published Oct. 12 in the journal Nature explains that much of it may have to do with the nutritional needs of insects. Returning plant diversity to farmland could be a key step toward sustainable pest control.

 

"Insects have a perfect nutrient level that they really like," said lead author William Wetzel, a doctoral student in Population Biology at UC Davis at the time of the study and currently an assistant professor at Michigan State University. "When it's too high or too low, they do poorly."

 

The Problem With Monocultures

 

The problem with monocultures, Wetzel said, is that if an insect likes the crop, that insect has a large food supply to draw from all in one place. Conversely, a field containing a variety of plants does not offer a large block of food for the insect, so it will not get the nutrients it needs to survive and thrive.

 

"A monoculture is like a buffet for plant-eating insects where every dish is delicious," Wetzel said. "A variable crop is like a buffet where every other dish is nasty."

 

Many small farms around the world already include a diverse mixture of plants. But in most monocultures, the plants are bred to be as identical as possible. How can larger growers introduce more diversity while maintaining their same level of production?

 

Read more at: https://www.sciencedaily.com/releases/2016/10/161012134054.htm

Back      Print      View: 1882

[ Other News ]___________________________________________________
  • Egypt Holds Workshop on New Biotech Applications
  • UN Agencies Urge Transformation of Food Systems
  • Taiwan strongly supports management of brown planthopper—a major threat to rice production
  • IRRI Director General enjoins ASEAN states to invest in science for global food security
  • Rabies: Educate, vaccinate and eliminate
  • “As a wife I will help, manage, and love”: The value of qualitative research in understanding land tenure and gender in Ghana
  • CIP Director General Wells Reflects on CIP’s 45th Anniversary
  • Setting the record straight on oil palm and peat in SE Asia
  • Researchers Modify Yeast to Show How Plants Respond to Auxin
  • GM Maize MIR162 Harvested in Large Scale Field Trial in Vinh Phuc, Vietnam
  • Conference Tackles Legal Obligations and Compensation on Biosafety Regulations in Vietnam
  • Iloilo Stakeholders Informed about New Biosafety Regulations in PH
  • Global wheat and rice harvests poised to set new record
  • GM Maize Harvested in Vietnam Field Trial Sites
  • New label for mountain products puts premium on biological and cultural diversity
  • The Nobel Prize in Physiology or Medicine 2016
  • Shalabh Dixit: The link between rice genes and rice farmers
  • People need affordable food, but prices must provide decent livelihoods for small-scale family farmers
  • GM Seeds Market Growth to Increase through 2020 Due to Rise in Biofuels Use
  • Vietnamese farmer to receive FAO award

 

Designed & Powered by WEBSO CO.,LTD