Husker research shows palm oil production can grow while protecting ecosystems
Palm oil, the most important source of vegetable oil in the world, is derived from the fruit of perennial palm trees, which are farmed year-round in mostly tropical areas. The palm fruit is harvested manually every 10 days to two weeks, then transported to a mill for processing, and ultimately exported and made into a dizzying array of products from food to toiletries to biodiesel.
“You probably ate palm oil for breakfast,” said Patricio Grassini, associate professor of agronomy at the University of Nebraska–Lincoln. “There is probably palm oil in your shampoo and for sure palm oil in your makeup.”
Dozens of countries produce palm oil, but Indonesia produces approximately two-thirds of the world’s supply, and demand for the product is ever-growing.
This is a double-edged sword for Indonesia and other palm-oil producing countries, Grassini said. Palm oil is a major export and contributes to the economic stability of countries that are major producers, as well as to the individual farmers who produce it. But to keep up with demand, rainforests and peatlands — valuable ecosystems that contribute greatly to biodiversity — are often converted to palm production.
A four-year research project led by Grassini and supported by a $4 million grant from the Norwegian Ministry of Foreign Affairs suggests that keeping up with demand may not necessarily mean converting more valuable, fragile ecosystems into agricultural land.
According to research published March 25 in Nature Sustainability, palm oil yields on existing farms and plantations could be greatly increased with improved management practices. Researchers from the Indonesian Oil Palm Research Institute, the Indonesian Agency for Agriculture Research and Development, and Wageningen University in the Netherlands were also part of the project.
In Indonesia, about 42% of land used for palm oil production is owned by smallholder farmers, with the rest managed by large plantations, said Juan Pablo Monzon, research assistant professor of agronomy and horticulture at Nebraska and first author of the published paper. “There is great potential to increase productivity of current plantations, especially in the case of smallholders’ farms, where current yield is only half of what is attainable.”
The research shows that palm farmers have significant opportunity to increase their production, said Grassini, one of the developers of the Global Yield Gap Atlas, a collaboration between the University of Nebraska–Lincoln and Wageningen University designed to estimate the difference between actual and potential yields for major food crops worldwide including palm oil.
“The potential impact is huge, and if we are able to realize some of that potential, that means a lot in terms of reconciling economic and environmental goals,” Grassini said. “If we can produce more, we don’t need to expand into new areas. But this would require the effective implementation of current Indonesia government policy and assuring that regulations are enforced so that intensification and productivity gains translate into sparing critical natural ecosystems.”
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