Effect of Soil Physical State on the Earthworms in Hungary

Table 1

Number of earthworms (pcs m^-2) in the top 20 cm layer of a brown gleyic forest soil, under maize (Pyhra, 1998–2006, from [33]).

Tillage variants	1998	2000	2002	2004	2006	Mean
Direct drilling	54	72	66	88	288	113.6
Ridge till	27	32	42	28	72	40.2
Ploughing	10	12	31	16	56	25.0
Years	rainy	dry	rainy	average	average