Fungos micorrízicos arbusculares e adubação fosfatada no crescimento inicial de seis espécies arbóreas do cerrado
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Data
2011
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This study evaluated the benefi t of inoculation with arbuscular mycorrhizal fungi, Glomus clarum, for the initial growth
of some native arboreal species of the Cerrado biome, namely gabiroba (Campomanesia cambessedeana), baru (Dipterix alata),
jatobá (Hymenaea courbaril), ingá (Inga laurina), caroba (Jacaranda cuspidifolia) and chichá (Sterculia striata), in unsterilized soil
with low (0.02 mg L-1) and high (0.2 mg L-1) concentrations of P in the soil solution. Experiments were conducted in a greenhouse,
using 1.5 kg vases, for up to 120 days. The experimental design for each arboreal species was completely randomized, with ten
replicates in a 2x2 factorial design (inoculated and noninoculated seedlings, and two levels of phosphorus (P) in the soil solution).
Arboreal plants of the Cerrado biome showed increased mycorrhizal colonization from inoculation with Glomus clarum, except
chichá, as this species showed a high indigenous colonization, not differing from the colonization promoted by inoculated fungi.
Inoculation promoted increased growth in baru, gabiroba, ingá, caroba and chichá, increasing shoot dry matter (MSPA) and root
dry matter (MSR). In caroba, this effect was synergistic with application of P to the soil. Baru and jatobá showed increased dry
matter with application of P to the soil only. The mycotrophy (mycorrhizal dependence) of species and their response to inoculation
and to phosphorus are discussed. In order to produce quality seedlings of caroba, gabiroba, chichá and ingá, combining inoculation
with Glomus clarum and phosphate fertilization of the soil is recommended, while for jatobá and baru only the application of P to
the soil is recommended.
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Mudas, Revegetação, Inoculação, Simbiose, Fósforo, Seedlings, Revegetation, Inoculation, Symbiosis, Phosphorus
Citação
LACERDA, Kenia Alves Pereira et al. Fungos micorrízicos arbusculares e adubação fosfatada no crescimento inicial de seis espécies arbóreas do cerrado. CERNE, Lavras, v. 17, n. 3, p. 377-386, 2011.