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Mortal response and growth of individual plants in a population of orchard grass dactylis glomerata part 2 aggression of weedy species and tiller mortality of orchard grass



Mortal response and growth of individual plants in a population of orchard grass dactylis glomerata part 2 aggression of weedy species and tiller mortality of orchard grass



Grassland Science 23(4): 319-324



Orchardgrass was sown on 4 different dates of sowing at various densities in the field and allowed to grow without defoliation under 2 different weeding treatments. Growth of each population was most influenced by the date of sowing and weeding. The reaction of orchardgrass to increasing density of weed took the form of increasing mortality in the number of tillers of orchardgrass individuals. The weight of orchardgrass individuals showed closer association with their tiller numbers than their plant height. The multiplication of tillers per unit area became dependent on the density of weed with time elapsed. The results are discussed in reference to the regulation of the size of orchardgrass population in the field.

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