Showing posts with label pollinators. Show all posts
Showing posts with label pollinators. Show all posts

Tuesday, January 10, 2023

Loss of pollinators causing more than 400,000 early deaths a year: study

CTV News

A recent study says pollination loss may be leading to hundreds of thousands of excess deaths worldwide as supplies of healthy food become less plentiful. More here.

Tuesday, November 8, 2022

Some revolutionary advice for producers of seedless watermelon - and perhaps other fruits and vegetables, too!

by Larry Powell

A wild bee on a sunflower. A PinP photo.
 
For two years, US researchers studied the impact that both bee pollinators and beetle pests had on seedless watermelon.

        What they found was striking.        

Flea beetles feast on turnip-tops in Manitoba, A PinP photo.

    In both years, pollination by the bees was “the only significant factor” in both fruit set and marketable yield - even when compared to the harm done by the pests. Not only that, the wild bees increased those yields anywhere from one-&-a-half to three times more than honeybees.

    So the researchers conclude; If you want better yields, it’s more important to protect the bees that pollinate them than to kill the pests which eat them! 

    “These data," they state, "advocate for a reprioritization of management, to conserve and protect wild bee pollinations, which could be more critical than avoiding pest damage for ensuring high yields.”

    But the lead author of the study, Ashley Leach, is hesitant to extrapolate those findings to other crops like grains and oilseeds, so dominant on the Canadian prairies, for example. 

    He tells me in an email; "Our findings are intricately linked" to crops reliant on pollination (like seedless watermelon).

    "The pest we studied can have a variable effect of yield," Leach told me. 

    "However, multiple studies have found that insecticides may negatively impact pollinators so any reduction in insecticide spray could potentially impact yield and associated pollinator health outcomes. 

    "I wouldn’t recommend growers stop applying insecticides unless they don’t see a loss in yield, or they have another pest management practice in place."

    The findings are published in the “Proceedings of the Royal Society.”


Friday, April 2, 2021

Health Canada approves another product known to be deadly to beneficial organisms.

The Western Producer

Members of the "neonic" family are known mass-killers, esp. of pollinators such as honeybees. "Karen" holds dead bees at Hayes Valley Farm.

Health Canada’s Pest Management Regulatory Agency has announced that neonicotinoid insecticides are not a threat to aquatic insects when used as a seed treatment on canola and in many other instances. Details here.

Diesel vehicles in oil sands operations contribute to regional pollution

EurekAlert Wildfires, cigarette smoking and vehicles all emit a potentially harmful compound called isocyanic acid. The substance has been l...