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Scientia Agricola

On-line version ISSN 1678-992X


BELLINGIERI, P.A.; SOUZA, E.C.A.; ALCARDE, J.C.  and  SHIKASHO, H.W.. Effect of limestone reactivity on soybean crop characteristics and yield. Sci. agric. (Piracicaba, Braz.) [online]. 1992, vol.49, n.spe, pp.61-71. ISSN 1678-992X.

This experiment was conducted on a dark-red latosol, medium textured, Jaboticabal-SP, Brazil. The main objective was to study the effect of two liming materials (dolomitic and calcined-dolimitic), with four grades of particle size (F1 = > 2mm; F2 = 2-0,84 mm; F3 = 0,84-0,30mm and F4 = < 0,30mm) on the chemical properties of the soil, and on several characteristics of soybean cv IAC-8, evaluated during two croping seasons (1988/89 and 1989/90). During the first year the calcined-dolomitic limestone and the materials with smaller particles were more active and the yield of grain increased 14 percent. For the second croping season (1989/90) the effects of the liming materials were similar and grain productions were not affected by the treatments (P > 0.05). Only the contents of Mg in the leaves and grains differed among treatments.

Keywords : limestones; particle size; soybean; reactivity.

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