Your email address will not be published. Documents about Azolla filiculoides (AZOFI) THIS WEBSITE USES COOKIES Our website uses cookies to ensure that we give you the best possible online experience. Azolla filiculoides is one of just two fern species for which a reference genome has been published. Introduced in Euromediterranean region (except north and east), Himalayas, China, Japan, Korea, South Africa. Azolla can be used to purify water polluted by metals. These include integrated rice-Azolla-duck-fish farming in Japan, and azolla’s use as a biofertilizer for coffee and other crops grown in natural ‘tree-shade’ environments in India’s Western Ghats. (2005), Umali et al. Azolla filiculoides, a floating aquatic fern, is particularly problematic due to its high growth rates and dense colony formation, rapidly spreading to completely cover water surfaces. (1989) found that Azolla pinnata and Lemna minor (duckweed) removed the heavy metals iron and copper from polluted water when the metals are present at low concentrations. and then incubated under dark conditions. This produces some of the best coffee in the world and provides natural habitats for wildlife that are increasingly threatened in the nearby UNESCO World Heritage Site of the Wester Ghats – one of the eight “hottest hotspots” of biological diversity in the world. Required fields are marked *. These results confirm azolla’s use as a biofilter for the removal of both phosphorus and nitrogen. Azolla filiculoides Uses Azolla is grown as a fodder for animals and is also commonly grown as a companion plant for rice as it fixes nitrogen and suppresses weeds Azolla���s potential has been recognized for many years in India and the Far East where it is used as a livestock feed and biofertilizer, particularly in rice production. Not only can very little survive under such conditions, but the quality of drinking water is reduced, caused by bad odours, colour and turbidity. It is can also affect ir��� Saxena (1995) found that a mixed culture of Lemna and azolla in the ratio of 2:1 was able to purify highly polluted effluent from factories sufficiently for it to be used for agricultural purposes. Limnologica, 30:72-81. The team of scientists, based in Japan and the USA, investigated the use of Azolla pinnata, as well as Pistia striatiotes and Salvinia molesta in fuel-contaminated environments. The plant is used for the purification of water, removal of heavy metals, and removal of nitrogen and phoshorous from wastewater. All three species are native in the Americas. Azolla’s reduction of methane emission from rice fields. They concluded that both cyanobacteria and Azolla microphylla, applied to flood water, can play a major role in the mitigation of methane emission from rice fields through enhanced methane oxidation. "Azolla filiculoides" is a small fern that floats on water and is thus similar to the more familiar duckweed. Azolla can be used to control mosquitoes because a thick azolla mat on the water surface helps to prevent breeding and adult emergence. Sourek J, 1958. (2009), the azolla biomass resulting from the purification process can also be used as a biofertiliser, which decreases the cost of phosphorus removal in wastewaters, of particular benefit to small communities. Azolla’s potential to purify water has potential applications for both industrial and mining operations, as well as space exploration. She showed that it sequestered 32.54 metric tonnes CO 2 /hectare/year after 18 days growth with 10% initial cover of A. filiculoides. After 16 weeks the azolla plants had died and were surrounded by bacterial flocs. For that reason, azolla often ��� KB; Other Data. It can fix Nitrogen. Discovery of fossil Azolla massulae from Japan and some notes on recent Japanese species [In Japanese]. This is now changing and some of the impetus has come from studies into diets that could be used for space stations, space travel, and habitation on the Moon and Mars. Azolla filiculoides has been reported to be most salt-tolerant. Azolla is widely used as a livestock feed in India and the Far East, but its potential as a food for people is less well known. A. filiculoides can block canals, drains and overflows and may lead to an increased risk of flooding. Seto K, Nasu T, 1975. They are extremely reduced in form and specialized, looking nothing like other typical ferns but more resembling duckweed or some mosses. It is hardy to zone (UK) 7 and is not frost tender. This is relevant to reducing greenhouse gases (Prasana et al., 2002). In a survey of pools, ponds, wells, rice fields, and drains, Ansari & Sharma (1991) found that breeding by Anopheles was almost completely suppressed in water bodies that were covered with azolla. Gilding generates large volumes of wastewater with residual gold, posing environmental and financial problems necessitating metal recovery. Costa et al. These infestations can reduce light levels below the mats and cause die off of water plants and algae and reduce water oxygenation levels with serious impacts on fish and other fauna. AzollaControl makes use of the North American, weevil Stenopelmus rufinasus.This weevil is a highly effective natural enemy of Azolla filiculoides. Laboratory experiments by Rajendran & Reuben (1991) have also shown that immature mosquito populations of Anopheles subpictus, Culex pseudovishnui and C. tritaeniorhynchus were reduced by a 90% cover of Azolla microphylla, and that Azolla pinnata greatly reduced the oviposition and adult emergence of Culex quinquefasciatus and Anopheles culicifacies. - neue eingeschleppte Art in der CSR. The azolla cover reduced light intensity by about 90%, reducing photosynthesis in the floodwater and thus reducing oxygen concentration of the water by more than 50%. Moist soil cores (0–5 cm depth), collected from rice fields that had been treated with urea in combination with a cyanobacterial mixture, Azolla microphylla, or cyanobacterial mixture plus Azolla microphylla, effected distinctly more rapid decrease in the headspace concentration of methane added at 200 μl–1 than did the soil cores from plots treated with urea alone (30, 60, 90 and 120 kg N ha–1), irrespective of the rate of chemical nitrogen applied to rice fields. Synechocystis sp. Azolla is a preferred food of apple snail, a serious pest of taro in Hawaii. Radha Prasana and a group of colleagues at various institutes in India have shown that methane production from rice growth is inhibited by the presence of azolla. American waterfern is the species commonly found in Florida. Endemic to North America, there is an equivalent to Red Azolla in the Carolina Mosquito Fern or Water Velvet, A. caroliniana. Cohen et al. It is this unique microbiota that converts nitrogen into organic forms and makes Azolla a perfect bio-fertilizer. Suitable for: light (sandy), medium (loamy) and heavy (clay) ��� Azolla can be used to control weeds. Innovative work is also demonstrating how azolla is able to provides a crucial biological link in the development of sustainable, integrated farming practices that are not reliant on chemical fertilizers, but instead use the natural relationship between different species. Following earlier studies on azolla by Antunes et al. Received on September 19, 2011 Accepted on March 5, 2012 It is native to North, Central and South America. Azolla Cultivation:- For Azolla production, it requires a shallow pond. Azolla’s potential has been recognized for many years in India and the Far East where it is used as a livestock feed and biofertilizer, particularly in rice production. appears in other Kew resources: IPNI - The International Plant Names Index. Fraser-Jenk. Notes: Azolla filiculoides is a weed and the plant must be controlled. Experiments were therefore carried out by Azolla Foundation founder and Associate Alexandra Bujak working with Azolla BioSystems Ltd to quantify the amount of CO 2 that can be sequestered by Azolla filiculoides. Given appropriate nutrient and other conditions, Azolla can grow rapidly. On the ecology of Azolla filiculoides Lam. It has a loose branching pattern. (2006) found that Azolla filiculoides removed more than 98% of gold from waste water in a gold plating factory and developed a continuous flow column system that removed 100% of the gold from waste water. 3 ���Azolla caroliniana and A. mexicana are very similar to A. filiculoides.Although A. filiculoides is the common species in western Europe, both the others have been recorded, though some of the identifications are questionable. Key words: cyanobacterium, Azolla, Anabaena, symbiosis, nitrogen fixation. Azolla Filiculoides also grows in South America, western North America, Alaska, and Europe, and is also listed among US noxious weeds. Basic cultivation details, plant uses, habitat etc for several thousand species of plants, mainly from the temperate zone. Azolla filiculoides is a small fern native to the Americas which has spread widely throughout the world by a variety of mechanisms, of which man has become the most significant (Lumpkin and Plucknett, 1982).Man has introduced A. filiculoides into Europe, North and sub-Saharan Africa, China, Japan, New Zealand, Australia, the Caribbean and Hawaii. characters and the practical uses of Azolla are described and the species Azolla filiculoides is reported for the first time from Himachal Pradesh. As pointed out by Costa et al. It is native to North, Central and South America. Azolla���s uses. Summary of Invasiveness. Cohen et al. There are six species of Azolla in the world. American waterfern, Pacific mosquitofern. It is rich in protein and minerals and can be used as animal fodder or for human consumption. Azolla filiculoides subsp. How Azolla Is Used as a Green Manure: Azolla can be used as a green manure by growing it as a monocrop and then incorporating it as a basal manure before the rice is transplanted; or transported to another site for use on upland crops; growing it as an intercrop and incorporating it as a top dressing manure after the rice is transplanted; or by growing it both as a monocrop and an intercrop. It is a floating aquatic fern , with very fast growth, capable of spreading over lake surfaces to give complete coverage of the water in only a few months. Net out excess plants as needed. Azolla cristata is of commercial importance in cultivation in southern and eastern Asia as a bio-fertilizer, valued for its nitrogen-fixing ability, which benefits crops such as rice when the fern is grown under it and reduces the need for artificial fertilizer addition. Soil cores from plots treated with urea alone at 60, 90 and 120 kg N ha–1 oxidized methane more rapidly than did the core samples from plots treated with urea alone at 30 kg N ha–1. Osaka Mus. Furthermore, azolla is able to do when nitrogen becomes a limiting growth factor, which is sometimes the case with urban wastewater treated by conventional processes. Azolla filiculoides Lam. They concluded that effluent containing metal pollutants in low concentrations could be treated by passing it through ponds containing one or both of these water plants. Looking for a cheaper more effective alternative for controlling Azolla filiculoides (water fern)?Look no further - AzollaControl from CABI offers you a comprehensive natural control option for managing this most noxious of weeds. . They concluded that the diesel degradation was due to the release of bacteria (bioaugmentation) and physiochemical improvement of the soil and water (biostimulation). Noms communs : Azolle, Azolle fausse-filicule ou Azolle fausse-fougère Catégorie : FLORE Famille : Azollaceae Milieu: Eau stagnante : bras morts de rivière, bordures de lacs, étangs, mares, canaux, fossés Origine géographique : Amérique du Sud Nom Anglais : Water fern Auteur : Lamarck, 1783 Introduction en France : Métropole About Mosquito Fern (Azolla filiculoides) 0 Nurseries Carry This Plant Add to My Plant List; Azolla filiculoides (Water Fern) is a species of Azolla, native to warm temperate and tropical regions of the Americas as well as most of the old world including Asia and Australia. Azolla filiculoides Lam. Profitability of using azolla as a livestock feed. Uses: Azolla filiculoides can be used as an ornamental plant in ponds, aquariums and fish tanks. Nat. General information about Azolla filiculoides (AZOFI) Western North America (including Mexico), Central America, South America (except northwestern Brazil). (2002) have shown that azolla has the potential to biodegrade and remove diesel contaminants from soil and water. During periods of stress, anthocyanin is thought to protect the photosynthetic apparatus from damaging high light intensities by absorbing some of the light and converting it to heat. Native to Florida. Herbarium Catalogue ��� Azolla is a 'superorganism', consisting of not just the fern but a diverse array of symbiotic bacteria. Soil was contaminated with diesel, flooded and inoculated with azolla. As this requires good water supply, choose a location near to good water source. Besides reducing light intensity, an azolla cover alters light quality, the green leaves having a filter effect that increases the relative amount of infrared rays which reduces the germination of light-sensitive seeds. Given appropriate nutrient and other conditions, Azolla can grow rapidly. 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