Biochar workshop poster marcia
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Transcript of Biochar workshop poster marcia
Biochar effect on aerobic rice yields in the Brazilian savanna (Cerrado)
On a sandy loam District Plynthosol (17% clay):
Hardwood biochar (%):
C(77) O(19) H(3.5) N(0.3)
S(0.04) Ca(0.06) Mg(0.03)
K(0.006) P(0.0005)
Cu+Fe+Mn+Zn (0.0006)
Density = 0.3 g/cm3
On sandy soil: yields were
linearly increased with 3% per
Mg/ha biochar amendment;
On a clayey Rhodic Ferralsol (58% clay ): Ferralsols cover 46% of Cerrado
YIE
LDS
(kg/
ha)
YIE
LDS
(kg/
ha)
N-P-K (kg/ha); *P ≤ 0.05; **P≤0.01; ¤PhD Thesis (in Portuguese); ©Embrapa
Demand:
(Silva SC, 2009)©
More information: Marcia T. M. Carvalho, E-mail: [email protected]
On clayey soil: there was no distinct
effect of biochar on yield; the higher the
dose of biochar applied, the more N
required to obtain the same yield.
