{"id":10774,"date":"2012-06-15T19:13:21","date_gmt":"2012-06-15T22:13:21","guid":{"rendered":"http:\/\/revistapesquisa.fapesp.br\/?p=10774"},"modified":"2016-05-23T13:50:08","modified_gmt":"2016-05-23T16:50:08","slug":"productive-option","status":"publish","type":"post","link":"https:\/\/revistapesquisa.fapesp.br\/en\/productive-option\/","title":{"rendered":"Productive option"},"content":{"rendered":"
\"On

Monsanto<\/span>On the left, sugarcane plantation during the growth stage. On the side, harvest-ready sorghum with grain panicle. Sorghum is more productive at this stage, unlike sugarcane, which should not flower in order not to lose its culm sugarMonsanto<\/span><\/p><\/div>\n

Consumers are never going to notice that in March and April the ethanol found in some fuel pumps at service stations is not the ethanol traditionally produced from sugarcane. The ethanol will have come from sorghum, a plant of the grass family that sugarcane also belongs to. This situation is predicted by researcher Andr\u00e9 May, from the Corn and Sorghum Unit of Embrapa (the Brazilian Enterprise for Agricultural Research), who is monitoring various experiments related to introducing sorghum into the country\u2019s energy matrix. Since 2007, Embrapa has been working toward developing sorghum crops during the sugarcane off-season. Embrapa plans to launch three new varieties of this grass this year for the production of ethanol.<\/p>\n

Sorghum, unfamiliar to most of Brazil\u2019s urban population, provides farmers with forage for cattle and seeds for poultry and hogs. It provides animals with energy and protein, fulfills their nutritional requirements in a way that closely resembles that of corn. In Africa, where the plant comes from \u2013 it probably originated in Ethiopia or Sudan \u2013 sorghum is a major food staple, being consumed as sorghum meal.<\/p>\n

Sorghum ethanol is expected to fill the gap in the cultivation of sugarcane, which is harvested between April and November. Ethanol shortage in the off-season, from December to March, increases ethanol prices, discouraging the owners of dual fuel cars from buying this fuel. The sorghum growth period is very short \u2013 no more than 120 days between planting and harvesting. It can be sown in November or December, February or March, on fallow land allocated for sugarcane \u2013 sugarcane fields have to be renovated every five years – or on land allocated for new crops, especially land previously used as pasture. Such circumstances are found in the northeast of S\u00e3o Paulo State, the North of Paran\u00e1 State , and in Mato Grosso do Sul and Goi\u00e1s States. Successful experiments with sorghum-derived ethanol are being conducted in Colombia, also during the sugarcane off-season.<\/p>\n

Another advantage of sorghum is that the juice extracted from its culm adapts very well to the industrial process of the sugarcane mills where ethanol is normally produced. The changes to the equipment are insignificant, consisting of just a few specific adjustments. The sugarcane harvesters can also harvest sorghum. As a result, the sugar mills can shorten the off-season period, especially between March and April.<\/p>\n

\"062-065_Sorgo_193-1\"<\/a>Sorghum has a number of uses, depending on which variety it belongs to. The varieties include forage sorghum, sweet sorghum and grain sorghum. Sweet sorghum has higher sugar content in its culms and can be used to produce sugar, although it is not used for this due to the plant\u2019s lower productivity relative to sugarcane. Embrapa Milho e Sorgo, based in the town of Sete Lagoas in Minas Gerais State, plans to introduce ligno cellulosic sorghum, a strain with a bigger stem, to produce more biomass. This biomass is being prepared for the future production of so-called second generation ethanol, when enzymes will be used to extract the fuel directly from the plant\u2019s bagasse.<\/p>\n

\u201cSorghum will also be used to produce electric power from the burning process in cisterns or to produce steam for heating processes in the food industry processes,\u201d says Robert Schaffert, a researcher at Embrapa Milho e Sorgo. \u201cWe expect ligno cellulosic sorghum to produce up to 60 tons of dry matter. This is 2.5 times more than sugarcane or corn.\u201d Schaffert has been studying sorghum for forty years and is a witness to the fact that the idea of using this plant to produce ethanol is not new. \u201cIn 1976, the National Alcohol Program (Pro\u00e1lcool) had already considered making ethanol out of sweet sorghum at small distilleries spread throughout the country, because at that time there was no way to transport the ethanol to regions that were far from production centers.\u201d<\/p>\n

\u201cWe launched three varieties of sweet sorghum which are still available to farmers, even though they have been used as forage or grain throughout this time. In 1985, the focus of the \u00a0policy of incentive was changed for the benefit of the big distilleries and we were no longer able to sell this idea to the mills. The solution was to collect genetic material (seeds) and store it in a cold chamber.\u201d<\/p>\n

In 2008, Embrapa took up this line of research again, when many sugar mills purchased by big Brazilian conglomerates, such as Petrobras, or by international conglomerates, began to realize that their investments would come to a standstill some months of the year. The mills saw then that sorghum was a possible solution to extend the harvest by 15 or even by 60 days. Lack of activity some months was coupled with a need to produce more ethanol because of the growth of the dual fuel automobile fleet. This caused fuel shortages during the off-season. Embrapa then decided to hire new researchers \u2013 including Andr\u00e9 May and Rafael Parrella – to research sorghum.<\/p>\n

\"062-065_Sorgo_193-2\"<\/a>Multinationals such as Monsanto, Ceres and Advanta soon envisioned the possibility of entering the market and began selecting and producing commercial seeds for the new phase of ethanol production. Since November, both Embrapa and these multinationals have planted sorghum in the fields at traditional sugarcane mills. The sorghum will be harvested and processed this month and in April. In 2010, a few hectares were planted experimentally at some sugar mills, with no commercial purpose.<\/p>\n

\u201cBetween 2002 and 2004 we had identified sweet sorghum during the characterization of Monsanto\u2019s germplasm (genes, seeds) already thinking about the production of ethanol,\u201d says agricultural engineer Urubatan Klink, who heads the commercial sorghum research projects at Monsanto. \u201cOur germplasm is formed through the acquisition of companies in Brazil, the United States, and Mexico. Thus, part of the material that we use to generate hybrid plants is Brazilian and the rest comes from abroad.\u201d Since the mills might be able to produce for an extra two months, the company has been conducting experiments with hybrid seeds since 2009. The experiments consist of cross-breeding traditional (non-transgenic) species with useful characteristics for planting, such as productivity and resistance to diseases.<\/p>\n

In 2011, Monsanto launched the first commercial hybrids, following a broad study on the agribusiness of sweet sorghum. \u201cWe have tested more than 800 hybrids in the last three years. We expect to test four thousand in the next two years.\u201d This is the opportunity for the company to finally become involved in the production of green energy. In Klink\u2019s opinion, the most important elements in this venture were the participation of researchers and the know-how of Canavialis, a company acquired by Monsanto in 2008. Comprised of researchers specialized in improving sugarcane varieties, the company was created in 2003 after the conclusion of the Sugarcane Genome Project, funded by FAPESP. \u201cThat helped us become more knowledgeable about the sugarcane industry,\u201d says Klink.<\/p>\n

Ceres, another US based multinational, is specializing in energy producing crops and has also launched two hybrids in 2011. \u201cWe\u2019re very optimistic and believe that sorghum will take up 500 thousand hectares in the next three years. We have the information that at least 1.5 million hectares of land will be ready for soil renovation in the next three years,\u201d says agronomy engineer William Burnquist, general manager of Ceres in Brazil. The company hired him away from the Sugarcane Technology Center (CTC) maintained by the sugarcane and ethanol industry, where he had worked for 30 years on sugarcane improvement. He says that the company\u2019s sorghum seeds were planted in November and December at mills owned by the country\u2019s five biggest sugarcane conglomerates in the states of S\u00e3o Paulo and Goi\u00e1s.<\/p>\n

\"Sorghum

Monsanto<\/span>Sorghum is harvested with the same equipment used on sugarcane plantationsMonsanto<\/span><\/p><\/div>\n

\u201cI believe we planted up to 4 thousand hectares. This area could have been bigger had we had more seeds. The demand is enormous,\u201d says Burnquist. Like Monsanto, Ceres has its own fields on which it develops and produces hybrid seeds. The two companies have not released how much they invested in the development and production of sorghum seeds in the country.<\/p>\n

Although there is quite a bit of enthusiasm about introducing sorghum to the ethanol industry, and if everything turns out well it will be another outstanding achievement in the success story of biofuel in Brazil, all the stakeholders involved unanimously say that sorghum will not replace sugarcane or invade sugarcane\u2019s space. The productivity-related difference between both plants is still quite substantial. Sugarcane yields 7 thousand liters of ethanol a hectare a year, while sorghum yields 2.5 thousand liters a hectare a year. Nonetheless, given the amount of ethanol yielded by sorghum, the plant will maintain a permanent position at the sugar mills. Planting costs of sorghum are attractive \u2013 R$ 2 thousand a hectare, vs. R$ 5 thousand a hectare of sugarcane. In addition, sorghum can be grown and harvested in just four months.<\/p>\n

\u201cThis year will be decisive for sorghum as a source of ethanol,\u201d says Andr\u00e9, from Embrapa. \u201cSugar mill owners and producers still need to know more about the plant and how to manage it. Sugar mill managers will need to have patience with the workers out in the fields because this crop is in the process of adaption,\u201d he adds. He calculates that sorghum will be planted on approximately 30 thousand acres in the 2011\/2012 harvest. There is no official data in this respect. Andr\u00e9 expects production to expand to 120 thousand hectares. In Brazil, sugarcane plantations cover 8 million hectares.<\/p>\n

Uncertainties might arise and possible adjustments might have to be made during the harvests. \u201cErroneous soil and plantation management could result in yields of 1.5 thousand liters a hectare, which is not profitable,\u201d says Andr\u00e9. The plantations must yield at least 2.5 thousand liters a hectare. Sorghum is compatible with the sugar mills\u2019 industrial process, but problems might appear, such as excess starch in the plant\u2019s panicles (where the seeds are found). This can increase the viscosity of the juice during the ethanol production process.<\/p>\n

\u201cIt is possible to solve these and other problems. For example, we can insert enzymes to reduce the levels of starch,\u201d says Carlos Eduardo Rossell, director of the Industrial Program of the Bioethanol National Science and Technology Laboratory (CTBE) in Campinas, S\u00e3o Paulo State. \u201cThis year we are going to keep closer track of the sorghum harvest and prepare a diagnosis of possible problems.\u201d Saccharomyces cerevisiae<\/em> yeast strains, used to ferment sorghum juice, will also be monitored. Right now, we are using the same yeast strains as the ones used for sugarcane juice,\u201d says agronomy engineer Henrique Amorim, a partner in Fermentec.<\/p>\n

This company supplies approximately 80% of the yeasts used by Brazil\u2019s sugarcane mills. \u201cWe have been monitoring experiments with sorghum for the last two years. The chemical composition of the juice has variations and we have already identified factors that might affect fermentation. We\u2019re studying new yeasts and will monitor the fermentation process of at least five mills in this sorghum crop,\u201d says Amorim. \u201cEverything is difficult in the beginning, but can all be sorted out with research,\u201d he adds.<\/p>\n","protected":false},"excerpt":{"rendered":"Sorghum to produce ethanol during the sugarcane off-season","protected":false},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[169],"tags":[153,227],"coauthors":[97],"class_list":["post-10774","post","type-post","status-publish","format-standard","hentry","category-technology","tag-agronomy","tag-energy"],"acf":[],"_links":{"self":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts\/10774","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/comments?post=10774"}],"version-history":[{"count":0,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/posts\/10774\/revisions"}],"wp:attachment":[{"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/media?parent=10774"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/categories?post=10774"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/tags?post=10774"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/revistapesquisa.fapesp.br\/en\/wp-json\/wp\/v2\/coauthors?post=10774"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}