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Most commonly, economically detrimental infections occur in guava. [2] Guava is considered to be a susceptible host, and the leaf spot symptoms can grow to be severe enough to reduce plant vigor and cause defoliation. In guava, Cephaleuros virescens can cause fruit spots as well, leading to a reduction in crop yield. [citation needed]
It is widely cultivated as an ornamental tree and for its fruit. [10] It is an evergreen shrub or small tree, 1–7 metres (3.3–23.0 ft) in height. [12] The oblong leaves are about two inches (five cm) long, dark green on the upper side and white underneath. The flowers have five whitish petals which are puffy, possibly filled with some gas.
One of the most well-known diseases caused by Ceratocystis paradoxa is Black rot or stem-end rot of pineapple, but it can also infect tropical fruit plants such as banana and coconuts as well as sugarcane. The pathogen infects the fruits through wounds or other openings after harvest has already happened and the fruit is fresh.
L. theobromae causes diseases such as dieback, blights, and root rot in a variety of different hosts in tropical and subtropical regions. [7] [8] These include guava, coconut, papaya, and grapevine. [8] Botryosphaeria dieback, which is formerly known as bot canker, is characterised by a range of symptoms that affect grapevine in particular ...
The common guava Psidium guajava (lemon guava, apple guava) is a small tree in the myrtle family , native to Mexico, Central America, the Caribbean and northern South America. [2] The name guava is also given to some other species in the genus Psidium such as strawberry guava (Psidium cattleyanum) and to the pineapple guava, Feijoa sellowiana.
Pineapple black rot, also known as butt rot, base rot, or white blister, is a disease caused by Ceratocystis paradoxa (teleomorph) (Thielaviopsis paradoxa: [1] anamorph). C. paradoxa also causes disease in a variety of other tropical plants such as banana, coconut, and sugarcane making it a somewhat dangerous pathogen. [ 2 ]
Austropuccinia is a monotypic genus of rust (a type of plant pathogen) native to South America with the only species Austropuccinia psidii, commonly known as myrtle rust, guava rust, or ʻōhiʻa rust. It affects plants in the family Myrtaceae. It is a member of the fungal complex called the guava rust (Puccinia psidii) group. [3]
Powdery mildew is a fungal disease that affects a wide range of plants. Powdery mildew diseases are caused by many different species of ascomycete fungi in the order Erysiphales . Powdery mildew is one of the easier plant diseases to identify, as the signs of the causal pathogen are quite distinctive.
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