Maximum Yield USA October/November 2019 | Page 21

Hydroponic Dandelions Have Role in Rubber Industry When it comes to ensuring continued rubber supply to manufacture the 50,000 products requiring the resource, dandelions might be the key. Rubber trees in South America are threatened by South American Leaf Blight, and if the disease establishes in Southeast Asia, rubber supply would be lost. However, hydroponically grown dandelions (Buckeye Gold variety has 10-15 per cent rubber in its roots) could help with rubber production. Some dandelions grow rapidly in hydroponics with rubber-producing roots becoming large enough for rubber extraction in a fraction of the time required in fields. Indoor vertical hydroponic systems have potentially at least 10-times higher productivity per acre per year than conventional rubber tree farming and can be built up very quickly. Some US companies are scaling up indoor dandelion production with hopes of ensuring long-term supply while competing with Asian rubber companies. — thehill.com Avocado Prices Skyrocket According to USA Today reports, sky-high avocado prices are causing many restaurants to take the creamy accompaniment off their menus. The “avocrisis” is so bad, Rabobank’s vice president and senior analyst David Magana notes “this is the highest price for this time of the year in at least a decade, probably more.” In fact, compared to July 2018, this year’s wholesale prices for mid-sized avocados is up 129 per cent (as of July) as the price of a 25-pound box jumped from $37 to $84.25. Over the past year, as avocado consumption continued to rapidly increase, production in California and Mexico (which supplies around 80 per cent of American avocados) dropped significantly. In fact, the Mexican government says this “slight drop” in their own production, as well as an “increased demand in the US” has left the country without one of its dietary staples. Mexicans are reportedly resorting to the creation of “mock guacamole.” — delish.com Key Food-Growing Fertilizer Resource Dwindling By 2030, the world’s population will be 8.5 billion. However, there is a severe conflict between sustainable food production and using non-renewable resources in agricultural systems, particularly phosphate. Phosphorus is a major mineral nutrient required by crop plants for optimal growth and productivity. Phosphate is the only form of phosphorus plants can absorb (as phosphate fertilizer). Phosphate is obtained through rock mining but scientists report global phosphate production will peak around 2030, at the same time the global population hits 8.5 billion people. Several reports have also warned that the global reserve would be depleted within the next 50 to 100 years. Because plants can only uptake small amounts of phosphate, a majority of fertilizer ends up in unwanted places, like bodies of water. It is reasonable to predict that as phosphate becomes more expensive and may eventually run out, it could pose a food-security threat. — phys.org Maximum Yield 21