SOIL ORGANIC MATTER IN SUSTAINABLE AGRICULTURE - CHAPTER 3 pot

... organic matter turnover. Eur. J. Soil Sci. 52, 34 5 35 3. Christensen, B.T. (1986). Straw incorporation and soil organic matter in macro-aggregates and particle size separates. J. Soil Sci. 37 , 125– 135 . Christensen, ... organic material from soil. Soil Sci. Soc. Am. J. 15, 139 0– 139 3. Stone, A.G., S.J. Traina, and H.A.J. Hoitink (2001). Particulate organic matte...

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... Total glomalin concentration (mg/g aggregates) and aggregate stability (%) in 0- to 5-cm soil samples of plots in transition from plow tillage (PT) to no-till (NT) in 1-, 2-, and 3- year increments ... LLC 182 Soil Organic Matter in Sustainable Agriculture other fungi) or microbial competitors]; or (5) growing crops with multiple-gene pathogen resistance or limitin...

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... Syst. 68:2 53 268. With permission.) organic conventional low-input Depth (cm) 0-1 5 1 5 -3 0 3 0-6 0 no winter cover crop 6 0-9 0 9 0-1 20 winter cover crop 12 0-1 50 15 0-2 00 05020 30 NO 3 -N + NH 4 -N (mg ... of soil organic matter in sustaining soil fertility. Nature 37 1:7 83 785. Tisdale, J. M., and Oades, J. M. 1982. Organic matter and water-stabl...

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... April 23, 2004 2:21 PM © 2004 by CRC Press LLC 132 Soil Organic Matter in Sustainable Agriculture Low-Rate Organic Amendment 1 43 Organic Soil Management, or Long-Term Soil- Building 1 43 OM-Mediated ... Darby CONTENTS Introduction 132 Disease Suppression in Field Soils 133 Types of Disease Suppression 133 Suppressive Soils 133 General and Specific Suppression 134...

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... resulting in little change in potential soil organic C storage with tillage. 1294_C08.fm Page 245 Friday, April 23, 2004 2:25 PM © 2004 by CRC Press LLC 230 Soil Organic Matter in Sustainable Agriculture EFFECT ... drilling and ploughing of some Australian soils. Aust. J. Soil Res. 18:27 36 . 1294_C08.fm Page 264 Friday, April 23, 2004 2:25 PM © 2004 by CRC Press LLC 2...

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... in © 2004 by CRC Press LLC 296 Soil Organic Matter in Sustainable Agriculture Soil Quality Soil quality is defined as the capacity of a soil to function within ecosystem boundaries to sustain ... Press LLC 31 2 Soil Organic Matter in Sustainable Agriculture Conservation tillage, increased cropping intensity (e.g., reduction in fallow), crop rotation, and use...

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... Matter and Nutrient Cycling in the Field 32 9 Organic Matter Breakdown 32 9 Amounts of Organic Matter Consumed by Earthworms 33 2 Nutrient Cycling 33 3 Carbon 33 4 Nitrogen 33 5 Interactions between Earthworms ... organic- waste-degrading earthworms can increase rapidly, fragmenting organic wastes and increasing microbial activity in them dramatically. The main differen...

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... a b c e e e Moisture ratio;ϑ(m 3 m -3 ) Apparent wet specific gravity (g cm -3 ) Void ratio; e (m 3 m -3 ) a) b) 0 .38 7ϑ+4.265 0.664ϑ +3. 229 1. 639 ϑ+1 .32 6 © 20 03 by CRC Press LLC Shrinkage data obtained by Szatylowicz ... 1000 a) b) H 8-9 (Bartels and Kuntze, 19 73) H 8-9 (Bartels and Kuntze, 19 73) H 2 -3 (Illner and Raasch, 1977) H 7-8 (Illner and Raasch, 19...

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... 2.0 (m 3 m 3 ) Mesoporosity Microporosity pF > 4.2 (m 3 m 3 ) pF 2.0–2.7 (m 3 m 3 ) pF 2.7–4.2 (m 3 m 3 ) Moss-sedge peat R 1 0.920 0.257 0 .30 7 0. 533 0. 132 Alder swamp peat R 3 0.885 ... Zielonych, 68 :33 –41. Figure 2 .3 Barrier layer in a degraded organic soil: a = MtII Putzar soil, b = MtIII Klein-Markow soil; c = fen peat; d = MtI fen organic soil; e =...

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... Materials (n = 71, s e = 0.218) Field-moist (FM) 4. 73 3.69 3. 48 <0.01 <0.01 Air-dry (AD) 4 .34 3. 62 3. 41 <0.01 <0.01 Oven-dry (OD) 4 .34 3. 60 3. 39 <0.01 <0.01 Probability Level FM ... field-moist conditions. Change in buffer pH upon drying should be further investigated to quantify the intensity of the moorsh-forming process in organic soils after drainage...

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