Cleistocactus strausii
The cactus prefers free draining soils, strong sunlight, but not high temperatures — in fact it can withstand hard frosts down to -10 °C. In its natural habitat it receives plenty of water during the summer, but almost none over the winter. In cultivation, watering too much in winter often leads to root rot.
Colletotrichum capsici
Since "C. capsici" need water for their spores to germinate, limiting water can hinder "C. capsici" infection. By reducing or don’t use overhead irrigation and mulching, you can reduce water exposure in general and back splash on the fruit.