Monsanto Growth Ventures, the venture capital arm of Monsanto Co. (NYSE: MON) has led a Series A investment of $6.5 million in a Canadian startup called FarmLead, which has developed an online grain marketplace. Other investors in the deal include Avrio Ventures, the MaRS Innovation Accelerator Fund and Serra Ventures. The money will be used to support FarmLand’s expansion into the U.S.