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While plastic refuse littering beaches and oceans draws high-profile attention, the Food and Agriculture Organization’s (FAO) Assessment of agricultural plastics and their sustainability: a call for action suggests that the land we use to grow our food is contaminated with even larger quantities of plastic pollutants. “Soils are one of the main receptors of agricultural plastics and are known to contain larger quantities of microplastics than oceans”, FAO Deputy Director-General Maria Helena Semedo said in the report’s foreword.

According to data collated by FAO experts, agricultural value chains each year use 12.5 million tonnes of plastic products while another 37.3 million are used in food packaging. Crop production and livestock accounted for 10.2 million tonnes per year collectively, followed by fisheries and aquaculture with 2.1 million, and forestry with 0.2 million tonnes. Asia was estimated to be the largest user of plastics in agricultural production, accounting for almost half of global usage. Moreover, without viable alternatives, plastic demand in agriculture is only set to increase. As the demand for agricultural plastic continues surge, Ms. Semedo underscored the need to better monitor the quantities that “leak into the environment from agriculture”.

Since their widespread introduction in the 1950s, plastics have become ubiquitous. In agriculture, plastic products greatly help productivity, such as in covering soil to reduce weeds; nets to protect and boost plant growth, extend cropping seasons and increase yields; and tree guards, which protect young plants and trees from animals and help provide a growth-enhancing microclimate. However, of the estimated 6.3 billion tonnes of plastics produced before 2015, almost 80 per cent had never been properly disposed of. While the effects of large plastic items on marine fauna have been well documented, the impacts unleashed during their disintegration potentially affect entire ecosystems.

(https://news.un.org,07.12.2021. Adaptado.)