Technische voorbereiding bedrijfswateradviezen ter stimulering van watervasthoudende maatregelen op Twentse melkveebedrijven = Technical preparations for farm water recommendations to stimulate water rentention measures

The impact of water retention measures on the water discharge and their repercussions on the farm’s technical management and profits were studied in two dairy farms in Twente. The measures involved removing tile drains or reinstalling them more shallowly at the same or narrower or wider spacing. The maximum reduction in water discharge occurred after tile drains had been removed: it was approx. 3 cubic metres per day for a field of 2 hectares. With a rise of almost 30 cm in the mean highest water table, this is a reduction of 0.16 mm per day; On both farms the effects of the water-saving measures on the technical and economic operational results were marginal, because 1) they affected a relatively small area of the farms and 2) the influence on the mean lowest water table was small