Amount, biomass and energy characteristic of the soil mesofauna in the Byelorus­sian Polessian forests (within the formation bounderies) which were not subjected to drainage reclamation are determined by the subsoil water ...

One generation a year is observed in Heterodera humuli F i l i p j e v, 1934. Hatch­ ing of invasion larvae from cysts begins in the 3d ten-day period of April or in the 1st ten-day period of May, mass hatching of the ...