TY  - BK
AU  - Webster,J.A.
AU  - Hoxie,R.P.
AU  - Smith,D.H.
TI  - Reduced yield of spring oat cultivars by cereal leaf beetles [Oulema melanopus; Michigan]
SN  - 0193-3825
U1  - 82-733768 
PY  - 1980///
KW  - Injurious insects
KW  - Michigan
KW  - Oats avena
KW  - Pests of plants
KW  - Plant production
N1  - ill. 10 ref NAL, USDA, Beltsville, Md. 20705 - USA
N2  - In this research, we determined grain yield loss of oat cultivars commonly grown in cereal leaf beetle infested areas of Michigan. We measured yield loss by comparing grain yield and panicle weights from infested plots with those of uninfested plots of three locations. Two out of three tests showed significant losses in kg/ha grain yield, with an average loss of 17 percent and a range of 4 to 20 percent. The average larval density was one larva per two stems with a range of 0 to 1.2 percent. The average larval density was one larva per two stems with a range of 0 to 1.2 larvae per stem. Of the yield components, no significant losses were noted in fertile tillers (except in one test where red leaf virus was present), but significant losses were found in kernels per panicle and kernel weight. 'Korwood' and 'Orbit' were the highest yielding cultivars, while 'Clintland 64' was the lowest
T2  - Agricultural Research Results ARR-NC - Science and Education Administration, U.S. Dept. of Agriculture (USA). no. 6 Oct 1980. 6 p
ER  -