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California postman Rudolph Hass brought some avocado seedlings home to grow on his La Habra Heights property. One defied repeated attempts to receive grafts from an existing avocado variety, bore no fruit and sorely tempted Hass to cut it down. But instead, he simply let the tree grow unatte...
Bioassays using tension plates and soil columns indicated that organic matter levels were correlated positively with the ability of mulches to trap zoospores and reduce the disease incidence in Persea indica seedlings placed 35 mm from a source of zoospore-producing inoculum. Yardwaste mulches slightly...