questions: asking about training for use of mulching in chilli cultivation 
 answers: 1. it keeps moisture in. a layer spread over bare soil allows the area to soak up more water. the outer layer
dries faster than the soil below it, which reduces the rate
of evaporation from the soil, plus it lets the soil to retain
moisture for the plants.
2. it regulates soil temperature. in hot summer months, a
layer helps keep the underlying soil cooler. in the fall
when temperatures falls off, the layer around the plants
keep roots warm.
3. it smothers weeds. fewer weeds sprout because seeds
are buried beneath the surface. and the weeds that sprout
are weak and easy to pull.