Table 1 Microbial Populations of Soil Without Plant Growth, FUNGI Soil Depth Seg- Zoe ment (cm) Hummock Soil, and Greenhouse 1 Total Numbers per Gram. of Oven- Dry Soil (Thousands) (GH) Soil of Area 13 BACTERIA! Biomass (kg/ha) 4 Mucors % Aspergillt 4 Penietllia 4 Dematiaceae Total Numbers per Gram of Oven- Dry Soil (Millions) Biomass (kg/ha) Soil Without Plant Q -2,5 2.5-5.0 0 =5.0 5.0 + 1.2 1.5 + 0.6 3.2 + 0.9 11.4 + 2.7 3.4 + 1.4 14.8 + 4.1 4+ 3 6+ 7 5+ 5 73 + 12 51 + 20 62 + 16 0+ 0 6+ 8 344 2+ 2 0+ 0 1+1 2.9 + 0.5 2.4% 0.3 2.6 + 0.4 1.2 + 0.2 1.0 + 0.1 2.2 + 0.3 Hummock Soil Q -2,5 2.5-5.0 0 -5.0 10.6 + 1.3 16.3 + 2.7 13.4 + 2.0 24.2 + 3.0 37.3 + 6.2 61.5 + 9.2 8+ 4 4+t4 6+ 4 0+ 0 1t+il 1+ 16 + 5 45 + 5 30 + 5 16+ 1 4i+1 10 +1 5.1L + 0.5 7.4 * 2,1 6.2 4 1.3 2.2 + 0.2 3.1 + 0.9 5.3 + 2.1 GH Soil Before Planting 0-3 3-6 0-6 4,2 + 1.6 9.6 + 3.2 6.9 + 2,4 11.5 + 4.4 26.3 + 8.8 37.8 +13.1 22 + 6 10 + 2 1644 744 25 + 8 16 + 6 11+ 4 36 +10 23+ 7 22 +4 2+ 1 12 + 2 3.9 + 0.5 4.7 + 0.6 4.3 + 0.6 2.0 + 0.3 2.4 + 0.3 4.4 + 0.6 GH Soil at Harvest 0-3 3-6 0-6 27.9 + 8.1 12.6 + 3.1 20.2 + 5.6 76.5 £22.2 34.6 + 8.5 111.1 430.7 48 +7 28 + 5 38 + 6 1444 10 +4 13 +4 22 +10 742 15 + 6 341 25 + 9 1445 101.3 +30.2 37.4 +13.4 69.4 $21.8 51.4 *15.3 19.0 + 6.8 70.4 *22.1 Growth au values are expressed as the average + 1 standard error and are based on the same sample size.