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A Solution for the devastating bacteria causing citrus huanglongbing? UC Riverside scientists have found the first substance capable of controlling Citrus Greening Disease, which has devastated citrus farms in Florida and also threatens California. Oranges afflicted with Citrus Greening Disease.

There is culture in agriculture. Mary Lu Arpaia says she spent hours looking at the avocado pictures, along with those of other fruit crops.

Why are avocado roots coarse, but dense, while grass roots are a fine mat? It has long been one of the best kept secrets in the underground world: what determines the variation in form and function of plant roots?

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The rains are gone and the hills are drying. The weeds in the orchards that aren't being hit by the irrigation water are drying up, as well. During winter and early spring, false chinch bug primarily feeds on foliage, stems, and seeds of wild grasses and cruciferous weeds.