Reakcja kukurydzy na użyźnianie gleby lekkiej wapnowanym osadem ściekowym oraz jego mieszankami z ziemią spławiakową i popiołem ze słomy

TL;DRAbstract

In a three-year-long experiment the reaction of potted maize grown in acid light loamy sand to a single addition of lime-treated sewage sludge, its mixtures with sugar-beet washing earth from sugar plant sediment tanks and with ash from straw burning stations was studied. Lime-treated sewage sludge from a sewage plant in Zamosc was applied in two concentrations – 2 and 5% of weight, which corresponded to 56 and 140 Mg DM ha-1, as well as in the same concentrations but with an admixture of sugar-beet washing earth from a sugar plant sediment tanks in Werbkowice (10% of weight, corresponding to 280 Mg ha-1) and ash from straw burning stations (corresponding to 0.9 Mg DM ha-1). The sewage sludge fulfilled all the requirements needed for its agricultural utilization. The maize yield three years after a single treatment with 2 and 5% addition of lime-treated sewage sludge was comparable with standard mineral fertilization applied every year to maize grown as green fodder. The proportion of

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