Preliminary study on the influence of organic fertilization and mulching on the growth of one-year old Scots pine (Pinus sylvestris L.) seedlings and occurrence of soil mites under micro-sprinkler irrigation in two differ-ent sylvan-natural regions of Poland

Influence of microirrigation and organic fertilization on the growth of Scots pine (Pinus sylvestris L.) seedlings and the occurrence of soil mites in a post-arable land of two different sylvan-natural regions

THE CONCEPT OF ALTERATION AND MANAGEMENT OF SEWAGE SLUDGE AT THE SEWAGE TREATMENT PLANT IN SZAMOTUŁY

DETERMINATION OF QUANTITY OF BIOGAS FROM SEWAGE SLUDGE