Experimental set 1 consisted of onlyP. australis kept at a density of
40 plants m
2
. Experimental set 2 consisted of only T. latifolia
plants kept at a density of 40 plants m
2
. In 3rd set, each of P.
australisandT. latifoliawere kept at a density of 20 plants m
2
.
Experimental set 4, called as reference set, was kept without any
plant