ORGANIC SOILS and PEAT MATERIALS for SUSTAINABLE AGRICULTURE - CHAPTER 6 pptx

... permission.) 0 10 20 30 40 50 60 70 80 90 100 0 5 10 15 20 25 30 35 40 N/P ratio in SOM Relative P mineralization (%) 0 10 20 30 40 50 60 70 80 90 100 -4 ,6 -4 ,5 -4 ,4 -4 ,3 -4 ,2 -4 ,1 -4 -3 ,9 -3 ,8 -3 ,7 V P multiratio ... 1303 0 .66 NS 20.3 36, 109 43 ,67 6 1.43 NS 13.5 — — — 1995 5099 3797 1.11 NS 27 .6 79,817 75,503 1.31 NS 10.0 48 ,60 7 54,573 0.9...

Ngày tải lên: 11/08/2014, 15:20

... PtT-II-III or MtI-II-III (Table 1.12) Soils are classified: a, b, c (Table 1.4) Soils are classified as (Tables 1.4 and 1.13): aa-ab-ac or a1-a2-a3-a4 ba-bb-bc or b1-b2-b3-b4 ca-cb-cc or c1-c2-c3-c4 Source: ... Organic soils Dystri – Haplic Organic soils Fibric Organic soils Eutri-Hss, Eutri-Terric Organic soils, HSt, Fibric Organic soils Dystri-HSf, Dystri-Fibric Org...

Ngày tải lên: 11/08/2014, 15:20

... 0.03 0 .68 ± 0.07 0.14 ± 0.07 0. 36 ± 0. 16 nHv 7 ± 1.5 0.19 ± 0.20 0.03 ± 0. 06 0. 86 0.14 ± 0.11 0.70 ± 0.13 0. 16 ± 0.07 0. 46 ± 0.14 nHa nHt Not occurring in fibric peat materials nHw H3-H4 H5-H6 H7-H8 3 ... 0.02 0.94 0.94 0.92 0. 06 ± 0.012 0. 06 ± 0.014 0.08 ± 0.009 0.73 ± 0. 06 0. 76 ± 0.07 0.80 ± 0.04 0.12 ± 0. 06 0.18 ± 0.12 0.12 ± 0.05 0.57 ± 0. 06 0.58 ± 0.08 0 .60 ±...

Ngày tải lên: 11/08/2014, 15:20

... 0. 763 4 0.7287 0 .69 13 0.5925 0.5709 Median 0.8103 0.8007 0. 766 8 0.7323 0 .69 67 0.5934 0. 562 6 Maximum 0.85 56 0.83 76 0.8221 0.7900 0.7 561 0.7074 0 .69 44 Minimum 0.73 26 0.7231 0 .68 09 0 .64 38 0 .60 65 ... content (%) 95 90 85 80 75 70 65 60 55 50 45 K ( θ ) K s ( θ s ) peat 1 peat 1 peat 5 peat 5 peat 4 peat 4 peat 3 peat 3 peat 2 peat 2 © 2003 by CRC Pres...

Ngày tải lên: 11/08/2014, 15:20

... 4.5 for organic soils showing 30 60 % SOM and rich in clay and silt; they also recommended a target pH of 4.0 for organic soils showing 30 60 % SOM and rich in sand, as well as for organic soils ... 0.922 Oven-dry 3.43 6. 02 2.39–5 .61 pH W = 0. 765 pH KCl + 1.808 0.912 Oven-dry 2.74–5 .64 2.39–5 .61 pH CaCl 2 = 0.882pH KCl + 0 .63 6 0.9 96 Moorsh Materials Fiel...

Ngày tải lên: 11/08/2014, 15:20

... 4. 96 56. 4 12 .6 0. 96 70.0 95.8 166 3 962 1713 1 468 1135 262 232 10 41, 862 132 7 92.2 4.72 46. 7 13.1 1.38 61 .2 115.1 1 76 1190 133 715 485 50 43 24 37,717 119 8 83.1 6. 69 90.8 7.8 0. 36 99.0 66 .4 165 ... 5.74 53.3 6. 7 1.35 61 .4 71.1 133 4 966 3255 4544 3440 1 76 137 63 37,891 119 2 79 .6 4.80 52.1 8 .6 0.53 61 .2 98.7 160 99 46 7042 4594 3 460 152 143 56 35,122 111...

Ngày tải lên: 11/08/2014, 15:20

... isoprophylphosphoramidate Fenvalerate (S)-Alpha-cyano-3-phenoxybenzyl(S )-2 - (-4 -chlorophenyl )-3 - methylbutyrate Flamprop-methyl N-benzoyl-N-(3-chloro- 4- uorophenyl)-DL-alanine Fonofos O-ethyl-s-phenyl ethyl phosphonodithiote Glufosinate ammonium Ammonium-DL-homoalanin-4-yl(methyl)-phosphinic ... O.O-Diethyl-O-[3.5 . 6- trichloro-2-pyridyl]-phosphorothioate Cypermethrin (+ /...

Ngày tải lên: 11/08/2014, 15:20

... alternate rows of peat and sand at an angle of 135° and in sand covering the peat. The peat: sand ratio was between 2:1 (coarse sand and fibric peat) and 1:2 (fine sand and sapric peat) . Organic matter ... 8 96 8 13 Latvia 66 91 ca 1000 15 14 Lithuania 48 26 1900 39 15 Netherlands 2350 2000 85 16 Norway 23,700 1905 8 17 Poland 10,877 762 0 70 18 Russia 568 ,000 70,400 12...

Ngày tải lên: 11/08/2014, 15:20

... glomalin-C and POM-C. The MT treatment had the highest content of glomalin-C, POM-C, and aggregate stability, whereas the NT and CT systems did not differ (Figure 6. 6; Nichols, Wright, and Cavigelli, ... a FIGURE 6. 5 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 (N...

Ngày tải lên: 12/08/2014, 05:21

... 8 60 68 8 — — 60 7 Angers et al. (1997) Cryoboralf L PEI, Canada 8 60 366 359 — — Angers et al. (1997) Humaquept C QC, Canada 6 60 7 56 — — 67 5 Angers et al. (1997) Humaquept CL QC, Canada 4 60 ... 1994b. Water-stable aggregates and organic matter fractions in conventional- and no-tillage soils. Soil Sci. Soc. Am. J. 58:777–7 86. Black, A.L., and Tanaka, D.L. 1997. A conse...

Ngày tải lên: 12/08/2014, 05:21