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Papaya ringspot virus (PRSV) is a pathogenic plant virus [1] in the genus Potyvirus and the virus family Potyviridae which primarily infects the papaya tree.. The virus is a non-enveloped, flexuous rod-shaped particle that is between 760–800 nm long and 12 nm in diameter.
Bacterial diseases; Bacterial canker Erwinia sp. Bacterial leaf spot Pseudomonas caricapapayae: Bacterial wilt Pseudomonas solanacearum: Papaya Bunchy Top Disease: Rickettsia: Erwinia decline Erwinia sp. Erwinia mushy canker Erwinia sp. Internal yellowing Enterobacter cloacae: Purple stain Erwinia herbicola
The Arkansas Agricultural Experiment Station (AAES) is the statewide research component of the University of Arkansas System's Division of Agriculture. The Division also includes the Cooperative Extension Service. The AAES and CES work together to develop and test new agricultural technology and extend it to the public.
The University of Arkansas System Division of Agriculture is the agricultural research center for the University of Arkansas (UA).. The Division has over 1,650 faculty and staff members, including about 250 with PhD degrees in Agricultural Experiment Station and Cooperative Extension Service units on five university campuses, at five regional centers, seven research stations, nine specialized ...
Phytophthora root rot of papaya seedlings is most serious during rainy periods. Under waterlogged conditions, P. palmivora may attack roots of papaya older than three-months of age, the time at which they become resistant to the pathogen under normal conditions. Therefore, Phytophthora root rot may occur on papaya at any age in poorly drained ...
The extent of the impact depends on characteristics of both the pest and host tree. [10] Pests differ in their means of attack and extent of damage. For example, defoliating insect (spongy moth) may weaken trees but not directly cause mortality, while boring insects (emerald ash borer) can often cause serious damage. A pathogen may slowly ...
The Food and Agriculture Organization estimates that pests and diseases are responsible for about 25% of crop loss. To solve this, new methods are needed to detect diseases and pests early, such as novel sensors that detect plant odours and spectroscopy and biophotonics that are able to diagnose plant health and metabolism. [29]
The most serious pests are mealybugs that feed on citrus. Other species damage sugarcane, grapes, pineapple (Jahn et al. 2003), coffee trees, cassava, ferns, cacti, gardenias, papaya, mulberry, sunflower and orchids. Mealybugs only tend to be serious pests in the presence of ants because the ants protect them from predators and parasites. [2]