Grassland N fertilization in humid tropics : production, organic matter decomposition and uptake

Under tropical humid conditions at low altitudes in La Reunion island an experiment was conducted in 1995 to examine the effects of mineral and organic N fertilisation on regrowth of #Chloris gayana#. Mineral fertilisation stimulates the production of leaves for the first 20 days of regrowth. Dry master production was increased of 181 % with the combination of manure plus ammonium nitrate and only 147 % with ammonium nitrate alone. The soil microbial biomass activity, measured after 50 days of regrowth, was increased of 31 % by application of manure, 41 % by ammonium nitrate and 50 % by manure + ammonium nitrate. With organic fertilisation the uptake of N is more important in leaves than in stems.

Bibliographic Details

Main Authors:	Mandret, Gilles, Blanfort, Vincent
Format:	conference_item biblioteca
Language:	eng
Published:	s.n.
Subjects:	F04 - Fertilisation, F08 - Systèmes et modes de culture, Chloris gayana, fertilisation, engrais minéral, engrais organique, repousse, biomasse, http://aims.fao.org/aos/agrovoc/c_1570, http://aims.fao.org/aos/agrovoc/c_10795, http://aims.fao.org/aos/agrovoc/c_27870, http://aims.fao.org/aos/agrovoc/c_4592, http://aims.fao.org/aos/agrovoc/c_32532, http://aims.fao.org/aos/agrovoc/c_926, http://aims.fao.org/aos/agrovoc/c_6543, http://aims.fao.org/aos/agrovoc/c_3081,
Online Access:	http://agritrop.cirad.fr/390014/ http://agritrop.cirad.fr/390014/1/ID390014.pdf
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