Bee Box May/June 2010
The Apiary Inspectors of America (AIA) in collaboration with the USDA-ARS, and Project Apis m (PAm) scientific advisor Jerry Hayes, have recently published a report on losses of over-wintering honey bee colonies.  This past winter, according to their survey, beekeepers suffered 33.8% losses.  That mirrors the tough winters of 07-08 and 06-07.  At about the same time as the latest colony loss information was announced, the National Agricultural Statistics Service (NASS) reported that almond acreage has increased to over 800,000 acres. With an additional 20,000 bearing almond acres estimated for next year, another 40,000-50,000 colonies will be needed over the requirements of this past almond pollination season. 

 

Will we have those colonies available?  There has been an overall decrease in the number of colonies in the last 20 years (NASS data on honey producing colonies).  In the last 50 years, between 1959 and 2009, NASS reports a 55% decrease in the number of bee colonies in the U.S.

 

 

 Click here to view graphs of the AIA and the NASS data.    

 

 

 The good news is, bee colonies can be split.  Unlike an almond tree, to double a bee colony, one can be split to make two.  Healthy bees will then raise another queen for the queenless colony.  Commercial beekeepers do not wait for the colony to rear another queen; they buy queens and place them in the hives.  This time of year, beekeepers are busy already preparing for next almond pollination season by splitting robust colonies and thus building up colony numbers. 

 

One challenge beekeepers face is food for their colonies.  Just like humans, honey bees require a varied diet.  But with increased herbicide use in farming, on highways and along waterways, drought decreasing available wildflowers, land cleared for housing developments, agricultural land lying fallow due to lack of water, and wildfires destroying natural pollinator habitat, there are reduced bee forage resources.  Loss of cotton acreage and possible loss of citrus whether due to trespassing bees in mandarins or Huanglongbing disease potential could affect available food for bees.

 

In fact, perhaps the most important single step that could be taken to improve sustainability in pollinated crops is improved nutrition for honey bees.  Healthy bees, those that are able to tolerate infection, pests and stress, are bees that are well-fed.   For bees destined for almond pollination in February and March, spring and fall forage that includes adequate protein or pollen is particularly important. 

 

Planting honey bee forage crops would have three primary beneficiaries – beekeepers, growers and land owners.  Beekeepers would benefit by a savings in supplemental feeding costs, often 25% of their input costs.  Improved forage means more diversity in pollen or protein sources for bees, more brood and stronger, healthier colonies.  For the grower, greater bee supply would translate into decreased colony rental fees.  Abundant healthy bees result in better coverage and pollination of the millions of blossoms in a blooming orchard.  For a land owner or land manager, planting a nutritious pollen source could be economically beneficial, such as an oilseed crop like canola, or ecologically beneficial by preventing erosion or protecting waterways. 

 

The California State Beekeepers Association, with the help of Project Apis m, has submitted a proposal to the California Department of Food and Agriculture to develop acreage that could be devoted to bee pasture, whether it is fallow agricultural land or public lands.   Providing bee forage and educating and enlisting land owners and managers to produce food resources for pollinators could not come at a more critical time.  Specifically, developing large acreage for spring and fall forage crops for honey bees will result in improved bee nutrition, better colony health and strength, and more honey bees for pollination.  The present situation of increased bee losses, increased hive rental costs for growers and increased supplemental feeding costs to beekeepers is not sustainable.  Bee forage, if encouraged, could reverse this trend by providing a diversity of food sources for bees and a plentiful supply of bees at almond bloom. 

 

Christi Heintz is Executive Director for Project Apis m. a non-profit bee research organization.  Should you have acreage available or an interest in bee forage crops, please contact us at This e-mail address is being protected from spam bots, you need JavaScript enabled to view it . 

    
 
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