Soil Management Handbook - Ministry of Agriculture and Lands

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9 0 to 50 cm fine-texture//50 to 150 cm fine-texture, moderately compact. Water management requirements of this soil are high. A great deal of effort and care is needed to get rid of excess water. Closely spaced drains, with provisions for direct surface drainage with gravel filled trenches, are necessary. Where such surface provisions are not possible, the use of surface ditches may be unavoidable. The soil must be broken with a subsoiler and well supplied with organic matter. Permanent cover crops will work best, but if that is not possible, a careful crop rotation must be selected to prevent the soil from being structurally damaged. Ochre hazard is low. Under sloping conditions, erosion potential is high and surface interceptor drains are required. 10 0 to 50 cm medium-texture//50 to 150 cm coarse-texture. Watertable control of this soil is difficult. Underdrains are very effective, but filters are required. Efforts must be directed towards keeping the surface soil in an open, well structured condition, with organic matter applications and sensitive management practices. A fairly high ochre hazard is present. 11 0 to 100 cm medium-fine-texture//100 to 150 cm coarse-texture. Although watertable control of this soil is moderately good, surface conditions are poor. Land levelling and surface drainage oriented provisions are desirable as are subsoiling, organic matter applications and sensitive management practices. Filters are generally required and the ochre hazard is moderately low. 12 0 to 40 cm organic material moderately well to well decomposed//40 to 150 cm fine-texture, medium high density. Water movement into and through the soil is restricted requiring fairly intensive drainage for satisfactory control. Control of water for inhibiting decomposition is of relatively little effect and should not be used in this soil because of the adverse effect of such measures on the subsoil structure. Subsoiling will be of help in enhancing subsoil porosity and water movement. 13 0 to 40 cm organic material, moderately well to well decomposed//40 to 150 cm medium to medium-coarsetexture. Water control prospects are high in this soil which is well suited to the use of underdrains. Filters are recommended where sand is present at drain depth. Accelerated decomposition of the organic material is a consequence of improved drainage. It should be reduced by keeping the watertable level high whenever possible through water control facilities. The effectiveness of these measures, however, diminishes as the depth of the organic material is reduced. 14 0 to 150 cm organic material. Movement of water through this soil material is variable, but generally in a medium range. Underdrains control excess water well, but accelerated decomposition is a consequence. Drains must be placed at a maximum depth and provided with a water control system to raise water levels when possible. Drought hazard is low due to a high water-holding capability. 15 0 to 100 cm organic material, well to moderately well decomposed//100 to 150 cm medium-texture. Movement of water through this soil material is variable, but generally in a medium range. Underdrains control excess water well, but accelerated decomposition is a consequence. Drains must be placed at a maximum depth and provided with a water control system to raise water levels when possible. Drought hazard is low due to a high water-holding capability. Soil Management Handbook – Okanagan-Similkameen Valleys 61
Table 17 Drain Recommendations Based on Generalized Soil Profiles Soil Category Depth (cm) Texture Drain Spacing (m) Depth (m) Special Requirements 1 0-150 Coarse 20 1.2 Filter 2 0-150 Medium 16 1.2 3 0-150 Fine 14 1.2 4 0-100 Coarse 18 1.2 Filter 100-150 Fine-Dense 5 0-100 100-150 6 0-100 100-150 7 0-50 50-150 8 0-50 50-150 9 0-50 50-150 10 0-50 50-150 11 0-100 100-150 12 0-40 40-150 13 0-40 40-150 Medium Fine-Dense Fine Fine-Dense Coarse Fine-Dense Medium Fine-Dense Fine Fine-Dense Medium Coarse Medium-Fine Coarse Organic Fine-Dense Organic Medium-Coarse 14 1.2 12 1.0 Subsoiling 16 0.8 Subsoiling 12 0.8 Subsoiling 10 0.8 Subsoiling 18 1.2 Filter 16 1.2 Filter Subsoiling 12 1.0 Subsoiling 16 1.2 Filter 14 0-150 Organic 14 1.3 15 0-100 100-150 Organic Medium 14 1.2 62 Soil Management Handbook – Okanagan-Similkameen Valleys
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Soil Management Handbook For The Ok
Page 4 and 5:
Preface The Soil Management Handboo
Page 6 and 7:
Table Of Contents Preface..........
Page 8 and 9:
Table of Contents Con't. Page 3.6 D
Page 10 and 11:
List Of Soil Management Groups And
Page 12:
List Of Tables Table1: Farm Conserv
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To obtain information about the soi
Page 17 and 18:
List of Definitions for Table 1 Con
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Well Suited Crops • All necessary
Page 21 and 22:
Soil Depth refers to the depth to e
Page 23 and 24: Grapes: grape suitability is strong
Page 25 and 26: Soil Management Groups This section
Page 27 and 28: Gammil Soil Management Group Soil S
Page 29 and 30: Greata Soil Management Group Soil S
Page 31 and 32: Kelowna Soil Management Group Soil
Page 33 and 34: Munson Soil Management Group Soil S
Page 35 and 36: Postill Soil Management Group Soil
Page 37 and 38: Rumohr Soil Management Group Soil S
Page 39 and 40: Skaha Soil Management Group Soil Se
Page 41 and 42: Summerland Soil Management Group So
Page 43 and 44: Miscellaneous Soils Soil Series: Ar
Page 45 and 46: Soil Management Guide This section
Page 47 and 48: Table 5 Soil Particle Size and Char
Page 49 and 50: Table 6 Physical Characteristics of
Page 51 and 52: plant roots and organic matter. The
Page 53 and 54: The bulk density of high organic mi
Page 55 and 56: Other management practices, such as
Page 57 and 58: Figure 11 Schematic drawing of the
Page 59 and 60: 1 m, etc., in an orchard block wher
Page 61 and 62: 3. Water Management High rainfall d
Page 63 and 64: Table 12 Availability Coefficients
Page 65 and 66: Impact of large drops of water disp
Page 67 and 68: The single most important soil fact
Page 69 and 70: land. Drainage systems are also nec
Page 71 and 72: Detailed information is provided in
Page 73: Table 16 Generalized Soil Profile D
Page 77 and 78: is very susceptible to structure de
Page 79 and 80: vertically into the soil and as it
Page 81 and 82: Figure 19 Schematic drawing of the
Page 83 and 84: Case 1: Well Structured Soils If th
Page 85 and 86: fracture requires the soil to expan
Page 87 and 88: "tie up" some soil nitrogen, althou
Page 89 and 90: efer to the following Factsheets: S
Page 91 and 92: contaminate groundwater. Water cont
Page 93 and 94: Table 18 N, P and K Content of Vari
Page 95 and 96: field access is possible, manure ap
Page 97 and 98: Annual or permanent cover will redu
Page 99 and 100: agricultural production, its impact
Page 101 and 102: References Published Sources Agricu
Page 103 and 104: Stevenson, D.S. and Brownlee, C.H.
Page 105 and 106: Appendix A-2 Figure 2 Typical summe
Page 107 and 108: Appendix A-4 fall frost. The angle
Page 109 and 110: Appendix A-6 Abbreviations Used in
Page 111 and 112: Appendix B: Soil Series And Locatio
Page 113 and 114: Greata Soil Management Group Greata
Page 115 and 116: Postill Soil Management Group Eanea
Page 117 and 118: Miscellaneous Soils Armstrong (A:er
Page 119: FOR FURTHER INFORMATION CONTACT B.C
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Soil Management Handbook - Ministry of Agriculture and Lands

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