Rottboellia cochinchinensis (graminée)

Écologie Distribution Gestion Impacts Références et liens Contacts

Étude de cas sur les impacts Argentina   Agricole: Alves (2003) states that, "This species is one of the main invaders of sugarcane in Argentina, Cuba, India, Hawaii, Mauritius, Puerto Rico, Trinidad, and the United States, where losses can reach 20 to 70%, depending on the cultivar, cutting cycle, and local ecological conditions." Aramina (Brazil)   Agricole: Alves (2003) state that, "R. cochinchinensis is an aggressive weed, considered to be one of the 12 worst weeds that infest sugarcane (Saccharum officinarum L.) in the world because it obstructs closure of crop rows when densities are above 10 plants m-2 (Holm et al 1977 ; Mercado 1978 ). The author further states that, "This species is one of the main invaders of sugarcane in Argentina, Cuba, India, Hawaii, Mauritius, Puerto Rico, Trinidad, and the United States, where losses can reach 20 to 70%, depending on the cultivar, cutting cycle, and local ecological conditions." Campinas (Brazil)   Agricole: Alves (2003) state that, "R. cochinchinensis is an aggressive weed, considered to be one of the 12 worst weeds that infest sugarcane (Saccharum officinarum L.) in the world because it obstructs closure of crop rows when densities are above 10 plants m-2 (Holm et al 1977 ; Mercado 1978 ). The author further states that, "This species is one of the main invaders of sugarcane in Argentina, Cuba, India, Hawaii, Mauritius, Puerto Rico, Trinidad, and the United States, where losses can reach 20 to 70%, depending on the cultivar, cutting cycle, and local ecological conditions." Dumont (Brazil)   Agricole: Alves (2003) state that, "R. cochinchinensis is an aggressive weed, considered to be one of the 12 worst weeds that infest sugarcane (Saccharum officinarum L.) in the world because it obstructs closure of crop rows when densities are above 10 plants m-2 (Holm et al 1977 ; Mercado 1978 ). The author further states that, "This species is one of the main invaders of sugarcane in Argentina, Cuba, India, Hawaii, Mauritius, Puerto Rico, Trinidad, and the United States, where losses can reach 20 to 70%, depending on the cultivar, cutting cycle, and local ecological conditions." Igarapava (Brazil)   Agricole: Alves (2003) state that, "R. cochinchinensis is an aggressive weed, considered to be one of the 12 worst weeds that infest sugarcane (Saccharum officinarum L.) in the world because it obstructs closure of crop rows when densities are above 10 plants m-2 (Holm et al 1977 ; Mercado 1978 ). The author further states that, "This species is one of the main invaders of sugarcane in Argentina, Cuba, India, Hawaii, Mauritius, Puerto Rico, Trinidad, and the United States, where losses can reach 20 to 70%, depending on the cultivar, cutting cycle, and local ecological conditions." Jaboticabal (Brazil)   Agricole: Alves (2003) state that, "R. cochinchinensis is an aggressive weed, considered to be one of the 12 worst weeds that infest sugarcane (Saccharum officinarum L.) in the world because it obstructs closure of crop rows when densities are above 10 plants m-2 (Holm et al 1977 ; Mercado 1978 ). The author further states that, "This species is one of the main invaders of sugarcane in Argentina, Cuba, India, Hawaii, Mauritius, Puerto Rico, Trinidad, and the United States, where losses can reach 20 to 70%, depending on the cultivar, cutting cycle, and local ecological conditions." Ribeirao Preto (Brazil)   Agricole: Alves (2003) state that, "R. cochinchinensis is an aggressive weed, considered to be one of the 12 worst weeds that infest sugarcane (Saccharum officinarum L.) in the world because it obstructs closure of crop rows when densities are above 10 plants m-2 (Holm et al 1977 ; Mercado 1978 ). The author further states that, "This species is one of the main invaders of sugarcane in Argentina, Cuba, India, Hawaii, Mauritius, Puerto Rico, Trinidad, and the United States, where losses can reach 20 to 70%, depending on the cultivar, cutting cycle, and local ecological conditions." Cuba   Agricole: Alves (2003) states that, "This species is one of the main invaders of sugarcane in Argentina, Cuba, India, Hawaii, Mauritius, Puerto Rico, Trinidad, and the United States, where losses can reach 20 to 70%, depending on the cultivar, cutting cycle, and local ecological conditions." Honduras   Agricole: Strahan et al (2000a) state that, "R. cochinchinensis left uncontrolled in Honduras reduced Z. mays yield 80% (Sharma and Zelaya 1986 )." India   Agricole: Alves (2003) state that, "R. cochinchinensis is an aggressive weed, considered to be one of the 12 worst weeds that infest sugarcane (Saccharum officinarum L.) in the world because it obstructs closure of crop rows when densities are above 10 plants m-2 (Holm et al 1977 ; Mercado 1978 ). The author further states that, "This species is one of the main invaders of sugarcane in Argentina, Cuba, India, Hawaii, Mauritius, Puerto Rico, Trinidad, and the United States, where losses can reach 20 to 70%, depending on the cultivar, cutting cycle, and local ecological conditions." Mauritius   Agricole: Alves (2003) state that, "R. cochinchinensis is an aggressive weed, considered to be one of the 12 worst weeds that infest sugarcane (Saccharum officinarum L.) in the world because it obstructs closure of crop rows when densities are above 10 plants m-2 (Holm et al 1977 ; Mercado 1978 ). The author further states that, "This species is one of the main invaders of sugarcane in Argentina, Cuba, India, Hawaii, Mauritius, Puerto Rico, Trinidad, and the United States, where losses can reach 20 to 70%, depending on the cultivar, cutting cycle, and local ecological conditions." Trinidad and Tobago   Agricole: Strahan et al (2000a) state that, "In Trinidad, Bridgemohan et al (1992) determined that in order to avoid yield loss, Z. mays must be maintained free of R. cochinchinensis competition for the first 9 wk after planting. The maximum length of time that Z. mays could withstand R. cochinchinensis competition before yield loss occurred was 1 wk after emergence." Hawaii (United States (USA))   Agricole: Alves (2003) states that, "This species is one of the main invaders of sugarcane in Argentina, Cuba, India, Hawaii, Mauritius, Puerto Rico, Trinidad, and the United States, where losses can reach 20 to 70%, depending on the cultivar, cutting cycle, and local ecological conditions." Louisiana (United States (USA))   Compétition: Strahan et al (2000a) state that, "R. cochinchinensis is highly competitive with Z. mays in Louisiana and, if allowed to compete all season, can reduce Z. mays yields as much as 38%." Strahan et al (2000a) further state that, "This weed has been declared noxious by Federal law and is commonly referred to as raoul grass in south Louisiana. It was first observed in Louisiana in 1927 near Ruth, St. Martin Parish (Millhollon 1975 )."