The element Silicon is not deemed essential for plant growth and development, but its absorption can benefit cumulative cultures like rice greatly. The Si content of tropical soils, however, is very low, due to the advanced weathering degree. The objective of this work was to evaluate the growth of rice plants in highlands under plastic tunnels and the effects of nitrogen (N) and Si doses on dry matter production, grain productivity, N content; Si soil and plant contents; and on […]

A greenhouse experiment was conducted in the Soil Science Department of the Federal University of Lavras, Brazil, to evaluate the effect of silicon on mineral nutrition and dry matter production of moringa plants, cultivated under salinity stress. The experiments followed a randomized factorial block-type design, in three replications. In pots of 3 L capacity with one plant each, five levels of NaCl (0, 30, 60, 90, and 120 mol m-3) were combined with four levels of SiO2 (0.0, 0.5, 1.0, […]

In addition to improving chemical attributes of the soil, such as pH, exchangeable Ca and available Si, calcium silicate fertilization in soils with low soluble silicon (Si) can also affect rice yield due to a greater resistance to lodging and increased photosynthetic area. The objective of this study was to evaluate Si availability in soils from the Brazilian savannas (Cerrado). The experiment was carried out in a greenhouse using upland rice. The treatments consisted of 5 Si rates (0, 120, […]