this crop was grass silage, which is made by growing a crop of hi quality grass e.g perrenial rye grass as was in the photo, then when its at the stage where it contains the most energy,just before it flowers and becomes fibrous,(so that the leaves are young and pallatable for the cows) it is cut using a forage harvester which cuts and chops the grass into small lengths, its then carried to a silage pit in trailers, where its compacted with a tractor and sheeted so that it can ferment without air getting to it and keep its energy value untill the winter, When its used to feed cows when the grass stops growing and the cows are inside because the fields are so wet.
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