grasses/trees on the germination, s

grasses/trees on the germination, shoot length, root The emergence of the radical from the seeds was
length, bioassay on different crop species. For instance, regarded as germinated and germination was recorded
pure tuber extract of Cyperus rotundus impede the every day till the 5 day. Root and shoot lengths of
cucumber, onion, radish and tomato’s radical elongation seedlings were recorded on the 10 day. The experimental
[31], at time, the effect was confined to only certain parts results were subjected to analysis of variance. Percentage
of the plant, as it was evident that, the elongation of of inhibition/stimulation effect on germination over
forage grasses radicle was more responsive than seed control (T ) was calculated using the formula given by
germination upon treatment with Leucaena [32]. The root Surendra and Pota [38]: I = 100 – (E x 100/E ), where, 1
length/growth and the lateral root development were more is% of inhibition/stimulation, E the response of control
susceptible to the increase in the concentration of and E the response of treatment. Relative Elongation
aqueous extract when compared to shoot [33-37]. Ratio (RER) of shoots and roots of crops was also
However, studies on the comparative effects of calculated with the formula suggested by Rho and Kil
different home garden trees on different food crops are [39]: R = (T/Tr) x 100; where, R is the Relative Elongation
few and far between in tropics. The selected home garden Ratio, T is the ratio of treatment crop and T the test ratio
tree (Magnifera indica L.) and food crops are some of the of control.