Cleistocactus strausii
Silver Torch cactus can thrive in low-nitrogen soil without facing the consequences of low nitrogen. Too much water will make the plant weak and lead to root rot. 
Least Concern. This cactus is locally abundant in its native land and has few local threats to its survival.
This cactus can be propagated by cuttings or seed.
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.