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Category: Agriculture

Phytophthora Identification and Sampling in Citrus Nurseries

phytophthora id brochure

Phytophthora species are important soil-borne, fungus-like pathogens that attack the root systems, trunk, and fruit of citrus trees at any age. The front of this identification sheet includes images of healthy and infested roots and… Read More

Biology and Management of Graceful Sandmat (Chamaesyce hypericifolia) in Ornamental Crop Production

Figure 3. Graceful sandmat inflorescence. Credit: Theresa Chormanski

Graceful sandmat (Chamaesyce hypericifolia) is a problematic weed that often grows in container media in ornamental plant nurseries.  This 4-page facts sheet profiles the biology of graceful sandmat and recommends physical, cultural, and chemicals methods… Read More

Postbloom Fruit Drop (PFD) Identification and Management

PFD brochure

This two-sided ID card is idea for growers working in the field trying to identify or manage postbloom fruit drop (PFD) in citrus.  The ID card includes photos of blooms affected by PFD and photos of… Read More

Tea Shot-Hole Borer Euwallacea fornicates (Eichhoff, 1868) (Insecta: Coleoptera: Curculionidae: Scolytinae)

Figure 1. Adult Euwallacea fornicatus (Eichhoff). A-B female, C-D male.

The tea shot-hole borer is an Asian ambrosia beetle introduced to Florida in the early 2000s. In Florida it does not have any known economic impact, but it is a serious pest of tea around… Read More

Vespiform Thrips Franklinothrips vespiformis Crawford (Insecta: Thysanoptera: Aeolothripidae)

Figure 1. Female vespiform thrips showing constricted waist and white band. Credit: Runqian Mao, University of Florida

Franklinothrips vespiformis Crawford is a predatory thrips with a pantropical distribution. The distinctive red, humped-back larvae and fast-moving ant-like adults are predaceous on small arthropods. In addition to being easily mistaken for an ant, this… Read More

Black Scale Saissetia oleae (Olivier, 1791) (Insecta: Hemiptera: Coccoidea: Coccidae)

Figure 1. Adult female black scales, Saissetia oleae (Olivier) on cultivated olive (Olea europaea L.). Credit: Lyle Buss, University of Florida

The black scale is an important pest of citrus and olive trees. Originally from South Africa, this scale is now distributed worldwide. In Florida, black scale is found on citrus, cultivated olive, avocado, and many… Read More

Black Turpentine Beetle, Dendroctonus terebrans (Olivier) (Insecta: Coleoptera: Curculionidae: Scolytinae)

Figure 1. Dorsal view of an adult black turpentine beetle, Dendroctonus terebrans (Olivier). Its large size, trapezoidal pronotum, and rounded declivity distinguish it from all other bark beetles infesting pines in the southern United States. Credit: Adam Black and Jiri Hulcr, University of Florida

Black turpentine beetles bore into the inner bark of stressed or injured pines, where they breed and feed on phloem tissue. Adults are strongly attracted to volatile pine odors and readily breed in fresh stumps…. Read More