Survey on the mineral elements - copper and molybdenum -in forages from areas of the State of Mato Grosso do Sul, Brazil

Abstract

This paper is handling about a survey made about copper and molybdenum levels in four grasses - Colonião (Panicum maximum), Jaraguá (Hyparrhenia rufa (Ness) Stapf), Pangola (Digitaria decumbens Stent) and Angolinha (Eriochloa polystachya (H.B.K.) Hitchc) - collected monthly at the city of Brasilândia, Mato Grosso do Sul, Brasil. The Colonião grass showed copper levels of 3.33 ppm and 4.76 ppm respectively for the rain and dry seasons. The Jaraguá showed mean values of 3.77 and 3.85 ppm, the Pangola 4.36 and 4.50 ppm and the Angolinha grass 4.24 and 4.95 ppm respectively in wet and dry seasons. On the other hand, molybdenum was found in levels of 13.85 and 13.2 ppm for Colonião, 14.4 and 12.5 ppm for Jaraguá, 11.7 and 14.5 ppm for Pangola and 13.0 and 11.3 ppm for Angolinha, respectively in rain and dry seasons. There were no significant differences in copper and molybdenum contents between grasses during the 12 months of sampling.