The correct answer is option 1 and 3 only. Vegetative propagation indeed produces a clonal population, as it involves the reproduction of plants from vegetative parts (like stems, roots, or leaves), leading to genetically identical offspring. This method allows for cultivation for most of the year, depending on the plant species and environmental conditions. However, while vegetative propagation can sometimes help with pathogen control, it does not inherently eliminate viruses; it may even perpetuate them if infected plant parts are used. Thus, statements 1 and 3 are correct within the context of vegetative propagation practices.