By Dr. Thomas T. Yamashita
The merits of enhanced defoliation with zinc sulfate are proven. In our western soils, zinc …
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Understanding Plant Diseases by Looking at Their Human Counterparts
By Dr. Thomas T. Yamashita
Many plant diseases have counterparts in human ailments. For example, the disfiguring disease crown gall. …
Almond Hull Rot (Brown Rot) – Treatment & Management
By Dr. Thomas T. Yamashita
Almond hull rot is a damaging disease. The freshly opened hull is colonized by either …
Tobacco Mosaic Virus (TMV) of Tomatoes – Identification & Treatment
By Dr. Thomas T. Yamashita
The tobacco mosaic virus (TMV) is one of many viruses of the genus tobamovirus, which …
Pierce’s Disease of Grapevines – Identification & Treatment
By Dr. Thomas T. Yamashita
Pierce’s disease—sometimes referred to as Anaheim disease as it was first identified in Anaheim in …
What are Vector-Borne Plant Diseases?
By Dr. Thomas T. Yamashita
Many pathogenic diseases—diseases caused by viruses, bacteria, spores, or other organisms—are initiated through ‘passive transmission.’ …
