Science in Action to Improve the Sustainability of Agriculture, Natural Resources and Food Systems
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September 27, 2016
Many bloggers have it wrong, Wikipedia had it wrong, and when I found that Agronomy Journal got it wrong, I was compelled to write on the topic once again. Monoculture is not the year-after-year production of the same crop in the same field. That is mono-cropping or continuous cropping, where the better alternative is crop rotation. Monoculture is “when only one crop species is grown in a field at a time” (Loomis and Connor, 1992), and the hard-to-manage alternative is polyculture or intercropping. You can take a picture of monoculture, but not of mono-cropping.
Just where this widespread misuse of “monoculture” started, I am not sure. It probably precedes the internet, and may have something to do with the similarity of monoculture and mono-cropping. More recently, Wikipedia played a part. For years it had a definition that combined the meanings of monoculture and mono-cropping. I suspect that this incorrect definition, and the fact that many people without agricultural backgrounds write about agriculture, has led to the widespread misuse we see today.
September 12, 2016
I’m a “lumper” rather than a “splitter.” Give me lots of details on different crops, yields, pests, or weeds, and I’ll try to pull out some overarching idea to remember (I’m likely to forget the details). Luckily there are people who thrive on the details, as was made clear to me in a webinar given by Dr. Sanford Eigenbrode earlier this year, discussing climate change and insects in wheat systems.
Because I am a “lumper”, I’ll start with the overarching point I took away from the webinar: we (that is, entomologists like Dr. Eigenbrode, not me personally) know enough about the insect pests affecting wheat systems in the Pacific Northwest to know that different insects, the viruses they spread, and the parasitoids and predators that control them will respond differently to a changing climate. So while crop models suggest that wheat yields in our high latitudes will fare reasonably well as carbon dioxide concentrations increase and the climate warms, there is still a huge question mark related to whether insects and other pests will allow such yields to happen. Vigilance, and knowing what insects to pay particular attention to, can therefore make a big difference to wheat growers’ collective ability to respond and adapt to changes.
August 29, 2016
It is apple harvest time again in Washington State, albeit about two weeks earlier than normal in most places. This will be a large crop overall, and probably a record crop for organic apples. The projection is for a harvest of just over 11 million 40-pound boxes of organic apples. At 88 apples per box (a typical size), that’s over 950 million organic apples. And while this sounds like a lot, if everyone in the US (say, 300 million people) ate one apple a day, that supply would be gone in less than four days. Still, demand is growing by around 10-12% per year, according to the annual surveys done by the Organic Trade Association. Based on data from grocery store sales, apples are the number two fresh fruit sold by value (behind berries) for both conventional and organic. A major food retailer reported that their sales of organic apples increased nearly 50% in 2015 over the previous year, a huge jump. And average organic apple prices received by growers hit record highs last season. The total value of the packed organic apples was just under $400 million, with 70% or more going directly to growers. This is a substantial contribution to the state’s economy.