Anais do XXXV Congresso Brasileiro de Ciência do Solo
CALCIUM SILICATE AS SOFTENING OF HYDRIC STRESS IN MAIZE
DOUGLAS JOSÉ MARQUES(1); MOZART MARTINS FERREIRA(2); HUDSON CARVALHO BIANCHINI(3); FERNANDA DE PAULA FERNANDES(3); LÍVIA MENDES BRANDÃO(3); RAFAEL DE OLIVEIRA FERREIRA(3); 1 - UNIVERSIDADE JOSÉ DO ROSÁRIO VELLANO-UNIFENAS; 2 - UFLA; 3 - UNIFENAS;
The aim of this study was to evaluate different proportions of calcium silicate on leaf water potentials, gas exchange and production parameters in Zea mays plants exposed to different irrigation depths. The experiment was organized in factorial scheme completely randomised with five corrective associations (0, 25, 50, 75, and 100% of calcium silicate indicated to liming of this soil) and five irrigation depths (30, 70, 100, 130, and 160% of necessary to water reposition in this soil). The application of 100% of calcium silicate promoted increase in values of predawn and midday water potentials, and beneficial effects also were showed to stomatal conductance, net photosynthetic rate and photosynthetic water use efficiency, when applied the irrigation depths of 70, 100, 130 and 160%.
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