Peanut Response to Crop Rotations Including Clary Sage, Snap Bean, and Sweet Potato
2014
Jordan, David L. | Johnson, P Dewayne | Corbett, Tommy | Schultheis, Jonathan | Shew, Barbara | Brandenburg, Rick | Ye, Wiemin
Peanut (Arachis hypogaea L.) rotation systems most often include corn (Zea mays L.) and cotton (Gossypium hirsutum L.). However, more diverse rotation systems can be found in some regions of North Carolina, and rotations of peanut with clary sage (Salvia sclarea L.), snap bean (Phaseolus vulgaris L.), and sweet potato [Ipomoea batatas (L.) Lam.] have increased in recent years. Research was conducted to determine visible estimates of disease expressed in the peanut canopy, plant parasitic nematode population in soil, and yield of peanut after rotations including clary sage, corn, cotton, soybean [Glycine max (L.) Merr.], and wheat (Triticum aestivum L.). The percentage of the peanut canopy reflecting symptoms associated with a combination of Cylindrocladium black rot and tomato spotted wilt was not affected by rotation but was 8% higher for the peanut cultivar Phillips compared with the cultivar Bailey. Peanut yield was affected by rotation and cultivar but not the interaction of these treatment factors. Peanut yield following a rotation of cotton–corn–sweet potato exceeded that of cotton–corn–cotton. In contrast, yield following the rotation of snap bean-wheat-clary sage was lower than yield following cotton-corn-cotton. Rotation affected density of lesion and ring nematodes but density did not relate to differences in peanut yield. Results from this experiment indicate that peanut can be grown immediately following sweet potato but not following the rotation of snap bean, wheat, and clary sage without a reduction in peanut yield.
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