Maximum Yield USA May 2017 | Page 30

max facts Eating Healthy Cheaper Than Buying Junk Food A new report from the Institute of Economic Affairs has found that healthy food is, for the most part, cheaper than junk food. Unlike previous studies, this new research measured the cost per edible weight as opposed to the cost per calorie of 78 common food and drink products. As reported in a story in the Telegraph, the cheapest processed foods cost “more than £2 (USD$2.50) per kilogram, whereas typical fruit and vegetables cost less than that amount.” This finding counters the thought that cost is driving poor nutrition and obesity. “The idea that poor nutrition is caused by the high cost of healthy food is simply wrong. People are prepared to pay a premium for taste and convenience,” says Chris Snowdon, the report’s author. “Given the relatively high cost of junk food, it is unlikely that taxing unhealthy food or subsidizing healthy food would change people’s eating habits.” - metro.co.uk Urban Ag Tax Credit Passes Montgomery Council A bill designed to let an urban farmer in Silver Spring resist development pressure was recently passed by the Montgomery County Council. The measure provides an urban agricultural tax credit, which will help 96-year-old Charlie Koiner and his daughter Lynn to keep their one-acre farm within sight of Silver Spring highrises. The tax credit would be equal to 80 per cent of the property tax due on the property. Although inspired by Koiner’s farm, the measure will encourage others with small plots to take up farming in urban areas, says council member Tom Hucker, who represents Silver Spring. “The bill advances urban agriculture generally,” Hucker said after the bill passed on an 8-0 vote. County agriculture Director Jeremy Criss told the council that his office would report back in 2020 to report any challenges. - mymcmedia.org Teen Converts Water Pollutant into Plant Fertilizer Stefan Wan, 17, developed a method to soak up and reuse fertilizer runoff before it can cause harm to rivers and streams. The Florida teen started with biochar, a type of charcoal farmers add to soil to help it retain water and nutrients. What biochar doesn’t do, however, is absorb phosphate or nitrate. So, the young scientist added a layered double hydroxide (LDH), which is a chemical containing pairs of positively charged atoms that attract negatively charged chemicals such as phosphate. The final mix of 60 per cent biochar and 40 per cent LDH, which contained magnesium and aluminum, became 95 per cent saturated with phosphate in an hour. Wan also discovered that the loaded mixture could release some of the phosphate, which could be reused as fertilizer. The lettuce seedlings he grew with the mix were 20 milligrams heavier than those grown in sand. Wan says the next step will be to see if the biochar mix works as well on farms. - sciencenewsforstudents.org 28 tapped in