Control of citrus postharvest green mold and sour rot by potassium sorbate combined with heat and fungicides
Most commercial citrus nurseries use grafting to propagate nursery trees. However, there are more than 30 kinds of citrus pathogens which can be transmitted by grafting, via infected budwood. These include citrus greening, tristeza, exocortis, tatter leaf, xyloporosis and psorosis. Once a plant is infected, such diseases may have a serious influence on growth. They shorten the life-span of the orchard and reduce yields and fruit quality.
Purpose of review: This article reviews research based on the evaluation of postharvest control methods alternative to conventional chemical fungicides for the control of citrus green and blue moulds, caused by the pathogens Penicillium digitatum and P. italicum, respectively. Emphasis is given to advances developed during the last few years. Potential benefits, disadvantages and commercial feasibility of the application of these methods are discussed.
Tree spacing is affected by factors such as the species of citrus concerned, the cultivar, the type of rootstock, the environment, the size of the orchard, and the manage-ment practices which the grower will be using. For example, if he will be using machinery, he must leave enough space between the rows for the machines to pass when the trees are mature.
Efficacy and Application Strategies for Propiconazole as a New Postharvest Fungicide for Managing Sour Rot and Green Mold of Citrus Fruit
Citrus utilized production for the 2010-2011 season totaled 11.7 million tons, up 7 percent from the 2009-2010 season. Florida accounted for 63 percent of total United States citrus production, California totaled 33 percent, and Texas and Arizona produced the remaining 4 percent. Utilized citrus production was up from the previous year in all citrus reporting States.