Efecto de la interferencia de las malezas sobre el crecimiento de dos cultivares de trigo invernal, [Castano Colorado, Paleta].
1992
Rojas T Ruth Angelica
The purpose of this research is to characterize the growing and competitive ability of two cultivars of wheat: a modern one (Paleta) and old one (Castano Colorado), under the effect of two levels of fertilization (with and without fertilization) and two control management systems a) without weeds b) with weeds. The applied experimental design consisted of complete blocks at random, with eight treatments disposed in a factorial arrangement 2*2*2 with four replications. During the development of the assay, monthly evaluations of dry matter of the different organs of the wheat (leaves, stems, grains and roots), the dry matter of the aerial part of the present weeds and finally evaluations of the yield and height of the plant were performed. From the results it is concluded that the growing was characterized for being under the first state of development, then to increase until the soft mass maturity state, maintaining afterwards only the production of grains. The fertilization increased the yield and development of the cultivars. However, the biomass and development yield by the old cultivar was similar under conditions of high and low technology. The modern cultivars only could express their productive potential under conditions of high technology (control of weeds and fertilization). The greatest competitive ability with the weeds of the old cultivar (Castano Colorado) in relation to the modern one (Paleta) was associated to a greater biomass of the different structures (roots, stems and leaves) greater number of stems, greater index of leaf area and plant height during all the growing cycle.
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