. Bulletin : report of Agricultural Experiment Station, Agricultural and Mechanical College, Auburn, Ala. Agriculture -- Alabama. 119 A very small eel- like worm, called nematode, (Hcterod- era radicicola) some- times attacks the soy bean root and causes irregular e n 1 a r g e- ments on it. The en- largements are mis- taken by some for nodules caused by nitrogen - gathering ])acteria, peculiar to this plant. Where the soil is badly in- fested with this in- sect, the farmer is advised to plant some other crop that is not susceptible to its at- tack. The soy bean suf- fers from a disease that a
. Bulletin : report of Agricultural Experiment Station, Agricultural and Mechanical College, Auburn, Ala. Agriculture -- Alabama. 119 A very small eel- like worm, called nematode, (Hcterod- era radicicola) some- times attacks the soy bean root and causes irregular e n 1 a r g e- ments on it. The en- largements are mis- taken by some for nodules caused by nitrogen - gathering ])acteria, peculiar to this plant. Where the soil is badly in- fested with this in- sect, the farmer is advised to plant some other crop that is not susceptible to its at- tack. The soy bean suf- fers from a disease that attacks the un- derground part of the plant and causes the leaves and stem to wilt. When the plant is examined, it is noticed that the bark is soft, and the woody part of the stem dark. This darkening of the stem is due to a mic- roscopic fungus (Fus- arium trocheiphilum- Smith), which is said to be the same organism that produces the wilt of cow- peas. When a lield becomes infested with this disease, it should not be planted in soy beans or cowpeas sus- ceptible to wilt. Root rot attacks the soy bean plant and causes a wilting of the leaves, followed by the death of the entire i)lant. When the ])lant is pulled up, a mat of Avliite fluffy mold is usually found on the stem directly below the |)()liil where the stem enters the ground. On. Diseased Soy Bean Root Sliow- ing the EfTeets of Nematodes. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Agricultural and Mechanical College of Alabama. Agricultural Experiment Station. Auburn, Ala. : The Station
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