[PDF][PDF] Effect of nitrogen fertilizer on growth characteristics and productivity of creeping forage plants for tree-pasture integrated system

R Dianita, L Abdullah - J. Agric. Sci. Technol, 2011 - researchgate.net
J. Agric. Sci. Technol, 2011researchgate.net
Sustainable forage production is one of the most important factors in livestock production
system. Smallholder livestock production system is a part of agricultural practice in
Indonesia. Limited land owned by farmers was dominantly cultivated for food crops, and very
small part of it used for cultivating forage plants. This leads to restriction of smallholder
livestock development, because no more land available for forage production. Integrated
forage production system by planting forage plants and food crops or trees in the same area …
Abstract
Sustainable forage production is one of the most important factors in livestock production system. Smallholder livestock production system is a part of agricultural practice in Indonesia. Limited land owned by farmers was dominantly cultivated for food crops, and very small part of it used for cultivating forage plants. This leads to restriction of smallholder livestock development, because no more land available for forage production. Integrated forage production system by planting forage plants and food crops or trees in the same area becomes a considerable cropping system that widely practiced by the farmers in Indonesia. Some grasses and legumes have morphological advantages overcoming growth condition under shading. These growth characteristics are benefit in designing compatible system components for enhanced productivity in tree-pasture systems. Four potential shade-tolerant creeping forages that were combined with 2 levels of nitrogen application were tested using factorial completely randomized design 3 replicates. The first factor was species of creeping forages (stoloniferous): BH= Brachiaria humidicola, PN= Paspalum notatum, AC= Axonopus compressus and, AP= Arachis pintoi. The second factor was nitrogen (urea) fertilizer: A= without N fertilizer and B= with N fertilizer (300 kg Urea/ha). The observations included the growth rates of plant length, plant length, number of leaves, herbages yield (shoot), root dry weight, senescence, total N-shoot, N-soil and N-uptake. The results showed that growth characteristics and productivity of creeping forage plants was significantly differed by the species. Most species showed an increase in growth trend, except P. notatum. A. compressus significantly showed as the best performance species compared to other, in terms of growth rates, plant length, number of leaves, herbage yield (shoot) and root dry weight, N-uptake and N-shoot. This was followed by B. humidicola, P. notatum, and A. pintoi. Based on previous study, A. compressus found as one of the native species in most tree system. It indicated its superior growth compared to other species tested. However, it is needed further research to observe the compatibility of each species in tree-pasture systems.
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