Page 75 - Nutrient Management Planning Guide

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Field Assessment

Solonetzic Soils

Solonetzic soils are found primarily in eastern Alberta, between Vermilion and Brooks. Solonetzic soils are naturally high in exchangeable sodium, characterized by the presence of a tough, impermeable hardpan layer found 5 to 30 cm or more below the surface (Figure 3.1.12).

Figure 3.1.12 Profile of a Solonetzic Soil

Management Implications »

Solonetzic soils severely restrict root penetration and water infiltration, resulting in poor crop growth and reduced tolerance to drought or flood conditions. Solonetzic soils exhibit in-field variation in topsoil depth, pH, fertility and subsoil characteristics. Variation in topsoil depth above the hardpan layer is largely responsible for the wavy pattern of crop growth observed on solonetzic soils (Figure 3.1.13). These soils have natural productivity constraints, which should be considered when making nutrient management decisions. Some management practices can improve the productivity of solonetzic soils (e.g., subsoil cultivation or deep ripping), however, these are not applicable to all situations.

more info

For more detailed information on salinity types and practical management check out these publications, which can be ordered from the AF Publications Office or searched by Agdex number on Ropin’ the Web:

1997. Perennial crops for •

recharge control of saline seeps. Agdex 518-13.

1997. Annual crops for •

recharge control of saline seeps. Agdex 518-14.

1997. Perennial crops for •

salinity control in discharge areas. Agdex 518-15.

1998. Structural controls •

for dryland saline seeps. Agdex 518-16.

2000. Dryland saline •

seeps: types and causes. Agdex 518-12.

2001. Salt tolerance of •

plants. Agdex 518-17.