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Maize plants with severe zinc deficiency in the foreground, with healthier plants (planted at the same time) in the background. Zinc deficiency is common in many different types of soil; some soils (sandy soils, histosols and soils developed from highly weathered parent material) have low total zinc concentrations, and others have low plant-available zinc due to strong zinc sorption ...
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]
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.
Bacterial diseases (fruit) Acetic souring Acetic acid bacteria: Bacterial fruitlet brown rot Erwinia ananas pv. ananas: Fruit collapse Erwinia chrysanthemi: Marbled fruit Acetobacter spp. A. peroxydans Erwinia herbicola var. ananas. Pink fruit Acetobacter aceti. Erwinia herbicola Gluconobacter oxydans. Soft rot Erwinia carotovora subsp. carotovora
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.
Guavas have a unique taste and color as well as many nutritional benefits. With vitamin C, fiber and potassium, they support immunity, heart and gut health.
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 ...
Oak wilt is a fungal caused by Bretziella fagacearum, is a disease originating in eastern Russia. It can slowly or quickly kill an oak tree when the tree reacts to the fungus by plugging its own cambial tissue while attempting to block the spread of the fungus. This plug prevents the cambium vascular tissue from delivering nutrients and water ...
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