Suppression of nematodes and other soilborne pathogens with organic amendments.

TL;DRAbstract

The organic matter (including composts, uncomposted materials, manures, compost extracts and compost teas) required to sustain the activity of the organisms responsible for general disease suppressiveness can be imported from elsewhere and added to soil as an amendment, or it can be obtained from the residues of crops grown in situ. This chapter covers the use of organic amendments to enhance suppressiveness. Although general suppressiveness to plant-parasitic nematodes is the main focus of this chapter, there is also a brief discussion of broad-spectrum suppressiveness to other pathogens (including fungi, oomycetes and bacteria). Nematodes are only one of many soilborne constraints to crop production, and one advantage of organic matter-mediated suppressiveness is that it provides some protection against most, if not all, members of the soilborne pest/pathogen complex.

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