Experimental set 1 consisted of only P. australis kept at a density of 40 plants m2
. Experimental set 2 consisted of only T. latifolia plants kept at a density of 40 plants m
2
. In 3rd set, each of P.
australis and T. latifolia were kept at a density of 20 plants m
2
.
Experimental set 4, called as reference set, was kept without any
plant