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Macroptilium atropurpureum

Authority (Moc. & Sesse ex DC.) Urban Family Magnoliopsida:Rosidae:Fabales:Leguminosae Synonyms Phaseolus atropurpureus Moc. & Sesse ex DC. Common names conchito, purple bean, purple bush-bean, siratro Editor Ecocrop code 1396

Notes
BRIEF DESCRIPTION Deep-rooting legume with trailing pubescent stems. Growth type depends partly on accompanying vegetation. Leaves pinnately trifoliate and dark green. Pod straight, about 7.5 cm long and many seeded. USES Used as a pasture plant. KILLING T Top growth is killed by frost, but the taproots can survive frost down to about -8°C. GROWING PERIOD Annual or perennial. Growing in summer and autumn in the subtropics and can grow all year round in the tropics. Can be sown in March in southern Florida, December-April in Australia and practically anytime in frost-free areas. Cut with intervals from 30-120 days. Suggested management in Florida: graze heavily during November-April, remove cattle until June-July to permit seed production, graze moderately until September, then remove cattle until seed accumulates in November-December. COMMON NAMES Siratro, Atro, Purple bean, Thua-sirato. FURTHER INF Scientific synonym: Phaseolus atropurpureus. Siratro is native of Central and South America. It can be found between latitudes 30°N and S. In Peru, it can be grown from sea level to 2000 m in elevation. Has been collected from sites receiving only 250 mm of rainfall per year. Dry matter yields may be between 4-12 t/ha. It is tolerant of fire. The plant grow very well but does not flower at daylenghts above 16 hours.
Sources
Grassland Index Skerman P 1988 pp 328-337 [TEMP, KTMP, RAIN, DEP, DRA, TEXT, PH, SAL, FER, PHO, LIG] Duke J 1981 pp 141-144 318 [DRA, TEXT, FER, RAIN, PHO, PH, SAL, TEMP] Bogdan A 1977 pp 379-385 [PHO, TEMP, KTMP, RAIN, TEXT, FER, DRA] Bryant P 1973 pp 354-355 [RAIN, TEMP, DRA, TEXT] Heath M 1985 pp 160-161 [RAIN, TEXT, DRA, FER, KTMP] Mannetje L 1992 pp 155-157 [RAIN, TEMP, TEXT, DRA, FER, PH]