Search results
Results from the WOW.Com Content Network
The host-specific characteristic of many leaf spot pathogens makes diversity in plant species a way to reduce and regulate leaf spot pathogen infection levels within plant populations. [ 18 ] Prevention of leaf spot disease includes variety selection, crop rotations, plant hygiene and fungicide use for seeds and foliage. [ 19 ]
As it feeds, the hibiscus mealybug injects into the plant a toxic saliva that results in malformed leaf and shoot growth, stunting, and occasional death. Leaves show a characteristic curling, similar to damage caused by viruses. Heavily infested plants have shortened internodes leading to resetting or a "bunchy top" appearance.
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.
Hibiscus [2] [3] is a genus of flowering plants in the mallow family, Malvaceae. The genus is quite large, comprising several hundred species that are native to warm temperate , subtropical and tropical regions throughout the world.
Hibiscus zenkeri Gürke Abelmoschus manihot , commonly known as aibika , is a flowering plant in the family Malvaceae . It is a tropical subshrub or shrub native to the Indian subcontinent , Indochina , central and southern China, Malesia , New Guinea , and Queensland . [ 2 ]
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 ...
Heart disease: Observational ... Black tea also comes from the Camellia sinensis plant, but unlike green tea, the leaves are fully oxidized, giving them their hallmark black color. Black tea has ...
Fungal diseases; Anthracnose leaf blight. Anthracnose stalk rot Anthracnose top dieback [3] [4] Colletotrichum graminicola. Glomerella graminicola [teleomorph]