BRUSSELS (Reuters) - German conglomerate Bayer won EU antitrust approval on Wednesday for its $62.5 billion buy of U.S. peer Monsanto, the latest in a trio of mega mergers that will reshape the agrochemicals industry.

The tie-up is set to create a company with control of more than a quarter of the world’s seed and pesticides market.

Driven by shifting weather patterns, competition in grain exports and a faltering global farm economy, Dow and Dupont, and ChemChina and Syngenta had earlier led a wave of consolidation in the sector.

Both deals secured EU approval only after the companies offered substantial asset sales to boost rivals.

Environmental and farming groups have opposed all three deals, worried about their power and their advantage in digital farming data, which can tell farmers how and when to till, sow, spray, fertilize and pick crops based on algorithms.

The European Commission said Bayer addressed its concerns with its offer to sell a swathe of assets to boost rival BASF, confirming a Reuters story on Feb. 28.

“Our decision ensures that there will be effective competition and innovation in seeds, pesticides and digital agriculture markets also after this merger,” European Competition Commissioner Margrethe Vestager said in a statement.

“In particular, we have made sure that the number of global players actively competing in these markets stays the same.”

Vestager said the Commission, which received more than a million petitions concerning the deal, had been thorough by examining more than 2,000 different product markets and 2.7 million internal documents to produce a 1,285-page ruling.

The U.S. Justice Department, which is also reviewing the merger, said in a statement on its website that it would press on with its review and that the market in the two regions was quite different.

“While genetically modified seeds are largely prohibited in Europe, they are widely used throughout the United States,” the department noted. “The Antitrust Division of the Department of Justice continues to examine the effects of the proposed transaction on American farmers and consumers.”

China has given conditional approval to the Bayer and Monsanto deal, which has won a green light in Brazil. It is currently being reviewed by Russian antitrust authorities too.

Australia said on Thursday it would not oppose the deal following the divestment commitment.

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Bayer has already reached a deal to sell certain seed and herbicide assets for 5.9 billion euros ($7.2 billion) to BASF and to give it a license to its global digital farming data. It will also divest its vegetable seeds business to BASF.

The Commission is due to rule on the BASF deal by April 16.

Online campaigns group Avaaz criticized the EU approval.

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“This is a marriage made in hell. The Commission ignored a million people who called on them to block this deal, and caved in to lobbying to create a mega-corporation which will dominate our food supply,” Avaaz legal director Nick Flynn said.

U.S.-incorporated Avaaz, funded by its members, is active in climate change, poverty, conflict and corruption issues.

The Greens grouping in the European Parliament echoed the sentiment, saying smaller players in the agriculture industry needed to be helped too.

“The agriculture industry is already far too concentrated, giving a handful of massive firms a stranglehold on food production. Merging two of the biggest players only makes a bad situation worse,” Greens spokesman Bart Staes said.