What is a recommended control measure for Citrus tristeza closterovirus?

Planting tolerant rootstocks is a recommended control measure for Citrus tristeza closterovirus because these specific rootstocks possess inherent resistance to the virus. When infected with the virus, citrus trees can suffer from significant stunting, reduced fruit yield, and eventually, tree death. By utilizing rootstocks that are tolerant or resistant, growers can effectively mitigate the impact of the virus on tree health and productivity.

The beneficial effects of planting tolerant rootstocks include enhanced overall plant vigor and improved resistance to the adverse effects of Citrus tristeza closterovirus. This strategy not only supports the longevity of citrus trees but also contributes to sustained production levels in infected orchards.

In contrast, fertilization of infected plants may not resolve the underlying viral issues and can even exacerbate the problem by promoting further growth, which could result in additional stress on the infected trees. Overwatering can lead to root problems and additional stress, while the use of synthetic fertilizers might not address the viral infection and instead could contribute to other issues in tree health. Thus, utilizing tolerant rootstocks stands out as a proactive and effective measure against Citrus tristeza closterovirus.