( ( ( ( ( ( ( ( Fertilizer salts ) , ) nematodes ) , ) ( excessive water ) ) or ) ( lack ( of nutrients ) ) ) ( ( may ( cause ( these symptoms ) ) ) . ) )
(ROOT (S (NP (NP (JJ Fertilizer) (NNS salts)) (, ,) (NP (NNS nematodes)) (, ,) (NP (JJ excessive) (NN water)) (CC or) (NP (NP (NN lack)) (PP (IN of) (NP (NNS nutrients))))) (VP (MD may) (VP (VB cause) (NP (DT these) (NNS symptoms)))) (. .)))
Fertilizer salts, nematodes, excessive water or lack of nutrients may cause these symptoms.
(ROOT (S (NP (NP (DT An) (NN excess)) (PP (IN of) (NP (NP (NNS fertilizers)) (CC and) (NP (JJ other) (NNS nutrients))))) (VP (VBZ causes) (ADJP (JJ eutrophication) (S (VP (TO to) (VP (VB occur)))))) (. .)))