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Pestalotiopsis palmarum is the causative agent of a fungal disease of bananas, coconut and Date palms. The fungus causes leaf spots, petiole/rachis blights and sometimes bud rot of palms. Unlike other leaf spot and blight diseases, Pestalotiopsis palmarun attacks all parts of the leaf from the base to the tip. Whereas most diseases only infect ...
Black leaf spot Coniothyrium palmarum (Israel, India and Cyprus) [1] Black scorch Ceratocystis paradoxa Chalara paradoxa [anamorph] Diplodia disease Diplodia phoenicum Lasiodiplodia theobromae = Diplodia natalensis. Fruit rots Alternaria spp. Aspergillus spp. Fusarium spp. Penicillium spp., etc. Graphiola leaf spot Graphiola phoenicis ...
A plaque at that site states: "As the nibong is a mangrove palm, this site must have once been a mangrove swamp." [ 8 ] The species is a close relative of Oncosperma horridum and shares with it properties of seawater-resistance in its stems, making it useful in the construction of kelongs , wooden structures used in shallow seas for the ...
It is a small (2–6 m tall), slow-growing fan palm with leaves that are dark blue-green above and silver-coloured below. [5] Measurements in Fairchild Tropical Garden showed an average growth rate of 12 centimetres (4.7 in) per year. [6] Flowers are white and small on light orange branches. The fruits are globose and half an inch in diameter.
Lethal yellowing (LY) is a phytoplasma disease that attacks many species of palms, including some commercially important species, such as the coconut and date palm.In the Caribbean, it is spread by the planthopper Haplaxius crudus (former name Myndus crudus) which is native to Florida, parts of the Caribbean, parts of Australia and Central America. [1]
The hyphae then grow over the plant roots and up into the woody trunk. The fungus damages the palm trunk closest to the soil first, expands in diameter and moves up the center of the trunk causing a cone like shape of infected trunk. When the basidiocarp emerges it is at the highest point when the fungus will internally grow.
The lesions continue to grow, and by the end of summer form leaf spots that look like tar. [2] The spot can grow up to 1.5 inches (4 cm) in diameter. [4] A microscopic sign of the pathogen are the stroma, mats of hyphae found in the lesions. [2] These lesions can cause senescence of leaves but are mostly of cosmetic importance.
Chamaerops humilis is a shrub-like clumping palm, with several stems growing from a single base. It has an underground rhizome which produces shoots with palmate, sclerophyllous leaves. The stems grow slowly and often tightly together, eventually reaching 2–5 m (10–20 ft) tall with a trunk diameter of 20–25 cm (8–10 in).