Nutritional requirements of Brachiaria and adaptation to acid soils
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Rao, Idupulapati Madhusudana; Kerridge, Peter C.; Macedo, Manuel Cláudio Motta. 1996. Nutritional requirements of Brachiaria and adaptation to acid soils . In: Miles, John W; Maass, Brigitte L; Valle, Cacilda Borges do; Kumble, Vrinda (eds.). Brachiaria: Biology, agronomy, and improvement . Centro Internacional de Agricultura Tropical (CIAT); Campo Grande, BR : Empresa Brasileira de Pesquisa Agropecuaria (EMBRAPA), Centro Nacional de Pesquisa de Gado de Corte (CNPGC), Cali, CO. p. 53-71. (CIAT publication no. 259)
Permanent link to cite or share this item: http://hdl.handle.net/10568/82025
External link to download this item: http://ciat-library.ciat.cgiar.org/Articulos_Ciat/Digital/SB123.E9C.2_An_exchange_of_experiences_from_South_and_South_East_Asia.pdf#page=165
Most commercial Brachiaria species are adapted to low-fertility acid soils of the tropics. We describe, with examples, some of the attributes that enable them to adapt. These include the ability to (1) maintain root growth at the expense of shoot growth; (2) acquire and use both nitrate and ammonium forms of N; (3) acquire N through associative fixation; (4) acquire p through extensive root systems and association with vesicular-arbuscular mycorrhizae; and (5) acquire Ca through extensively branched roots with large numbers of root tips. Although Brachiaria species have much lower internal requirements, especially of p and Ca, than do other grasses such as Panicum maximum, they show interspecific differences, which we describe. We also developed a system to diagnose mineral nutrient disorders by visual symptoms in B. decumbens cv. Basilisk, and describe our results. We offer a list of priorities for further research.
BRACHIARIA; PLANT NUTRITION; ACID SOILS; PRODUCTIVITY; NUTRIENT UPTAKE; NITROGEN FIXATION; NITROGEN; PHOSPHORUS; VESICULAR ARBUSCULAR MYCORRHIZAE; LIMING; FERTILIZER APPLICATION; NUTRICIÓN DE LAS PLANTAS; SUELO ÁCIDO; PRODUCTIVIDAD; ABSORCIÓN DE SUSTANCIAS NUTRITIVAS; FIJACIÓN DEL NITRÓGENO; NITRÓGENO; FÓSFORO; MICORRIZAS ARBUSCULARES VESICULARES; ENCALADO; APLICACIÓN DE ABONOS
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