How to stop erosion on a river bank<br>Use coir netting that's 700-900 grams per square meter (gsm). Coir netting is made from coconut fibers and is biodegradable. Normal or heavy duty netting should be used when there is a large amount of water flow.
use netting that is 699 grams per square meter (gsm) 
( z1 use :ARG1 ( z2 netting :ARG1-of ( z3 equal :ARG2 ( z4 rate-entity :ARG1 ( z5 mass-quantity :quant 699 :unit ( z6 gram ) ) :ARG2 ( z7 area-quantity :quant 1 :unit ( z8 square-meter ) ) ) ) ) )