SJC and Delta Field Crops

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Table. Alfalfa overseeding rates

Overseeding Older Alfalfa Stands

August 16, 2016
By Michelle M Leinfelder-Miles, Mick M Canevari
A land manager recently contacted me with questions about overseeding alfalfa. Her alfalfa stand is diminishing but not to the point of giving up on it.
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Red lesions on bean roots.

Bean Problem Diagnostics

August 4, 2016
By Michelle M Leinfelder-Miles
I recently visited a bean field in the southern part of the county with a PCA. From a distance, the beans in certain areas of the field appeared to be drying up and dying. A closer look showed that the leaf margins were drying up first before the whole plants declined.
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Armyworm larva

Armyworm Traps Available for Monitoring

July 20, 2016
By Michelle M Leinfelder-Miles
I have received armyworm traps from UC Davis entomology specialist, Larry Godfrey, and UCCE farm advisor, Luis Espino, to monitor populations in San Joaquin County rice fields. Luis has described 2016 armyworm pressure in a recent posting on the UC Rice Blog.
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Angular cutouts from leaf.

Armyworms in Delta rice

July 19, 2016
By Michelle M Leinfelder-Miles
I was recently contacted by a PCA who was observing armyworm feeding in Delta rice fields. Over the last two years, both locally and in the Sacramento Valley, armyworms have been striking rice fields earlier in the season and in greater numbers.
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