Figure 1 Wheat yields were doubled when grown after two resistant crops.. Best management practices rely on choosing tolerant varieties (that will yield well when nematodes are present), avoiding very susceptible wheat varieties (that build very high populations of nematodes in the soil), and growing resistant crops (to keep nematode populations low)... The most reliable way to tell if nematodes are present on farms is to have soil tested in a laboratory because symptoms of nematode damage can be difficult to distinguish - often attributed to "a dry finish", "a poor season" or "nutrient deficiencies"...
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