( ( ( This ( chemical inhibition ) ) ( by ( ( a plant ) ( on ( ( the ( ( germination or ) growth ) ) ( of ( ( a plant ) ( of ( the ( same species ) ) ) ) ) ) ) ) ) ) ( ( is ( called autotoxicity ) ) . ) )
(ROOT (S (NP (NP (DT This) (JJ chemical) (NN inhibition)) (PP (IN by) (NP (NP (DT a) (NN plant)) (PP (IN on) (NP (NP (DT the) (NN germination) (CC or) (NN growth)) (PP (IN of) (NP (NP (DT a) (NN plant)) (PP (IN of) (NP (DT the) (JJ same) (NN species)))))))))) (VP (VBZ is) (VP (VBN called) (ADVP (RB autotoxicity)))) (. .)))
This chemical inhibition by a plant on the germination or growth of a plant of the same species is called autotoxicity.
(ROOT (S (NP (NNP Plant) (NNP nutrition)) (VP (VBZ is) (NP (NP (DT the) (NN study)) (PP (IN of) (NP (NP (DT the) (JJ chemical) (NNS elements)) (ADJP (JJ necessary) (PP (IN for) (NP (NN plant) (NN growth)))))))) (. .)))