SJC and Delta Field Crops

We have become aware that common purslane (Portulaca oleracea, Fig. 1) is an increasing problem in alfalfa fields, particularly during the months of July through September.

We are continuing a trial that we began last year to evaluate optimum seeding rates for grain sorghum.

The 2017 UCCE grain corn variety trial was planted on May 9th, almost two weeks later than the trial was planted in 2016, due to the wet winter and spring. The trial is located in the Sacramento County Delta. Three replicate blocks of fifteen varieties were planted by air planter.

1. Register for the Weedy Rice Workshop UC Cooperative Extension and the California Rice Commission are sponsoring this workshop to update growers and consultants on the current weedy rice situation in California and on research that is being conducted by the University of California.

UC Cooperative Extension has augmented efforts to monitor armyworm populations in rice fields since 2015 when we observed large populations earlier in the year (June) than previously observed. Here in San Joaquin County, we began monitoring in Delta rice fields a couple weeks ago.