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The total life cycle takes 10–13 days [11] In susceptible varieties of Chrysanthemum, the female remains in one place within the leaf as it feeds on adjacent cells and continuously lays eggs. In resistant varieties, the female moves through the leaf laying only a few eggs as it goes.
Foliar feeding is a technique of feeding plants by applying liquid fertilizer directly to the leaves. [1] Plants are able to absorb essential elements through their leaves. [ 2 ] The absorption takes place through their stomata and also through their epidermis .
Plants have blue-green leaves and grow to 45 to 100 cm (18 to 39 in) in height. The plant is economically important as a natural source of pyrethrin insecticides. Tanacetum coccineum C. coccineum, the Persian chrysanthemum, is a perennial plant native to Caucasus and looks somewhat like a daisy. It produces large white, pink or red flowers.
The advantages here is that using the plant as a fertilizer has proven to increase crop yields. [5] T. diversifolia has the ability to restore phosphorus in high amounts to the soil. [21] T. diversifolia as a fertilizer contains 1.76% N, 0.82% P, and 3.92% K. All three properties are lower in cattle manure, and P is higher in poultry and swine ...
Puccinia horiana is a microcyclic, autoecious rust, meaning that the fungus has two known spore stages: teliospores and basidiospores, as well as no known alternate host. [6] Similar to other microcyclic rusts, two-celled teliospores produce unicellular basidiospores which are then dispersed via air currents.
The leaves are light yellowish green, variously pinnatifid. The conspicuous daisy-like flowers are up to 20 millimetres (3 ⁄ 4 in) across, borne in lax corymbs. The outer, ray florets have white ligules and the inner, disc florets are yellow and tubular. It spreads rapidly by seed, and will cover a wide area after a few years.
The species was first described in 1872 by Ernst von Trautvetter as Pyrethrum lavandulifolium, with the name attributed to Friedrich von Fischer. [10] [11] [note 1] In 1909, Tomitaro Makino placed the species in Chrysanthemum when describing Chrysanthemum boreale (which he had mentioned as a variety of C. indicum in 1902).
Chromatomyia syngenesiae, the ragwort leaf miner or chrysanthemum leaf miner, [1] also known by the synonym Phytomyza syngenesiae, is a Palaearctic fly, also present in Australia and New Zealand, with larvae that make leaf mines in Senecio species and other related herbaceous daisies.