EFFECT OF SEAWEED CONCENTRATE FROM ECKLONIA-MAXIMA (OSBECK) PAPENFUSS ON MELOIDOGYNE-INCOGNITA INFESTATION ON TOMATO
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作者:
CROUCH, IJ
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UNIV NATAL,DEPT BOT,PLANT GROWTH & DEV RES UNIT,FRD,UN,POB 375,PIETERMARITZBURG 3200,SOUTH AFRICAUNIV NATAL,DEPT BOT,PLANT GROWTH & DEV RES UNIT,FRD,UN,POB 375,PIETERMARITZBURG 3200,SOUTH AFRICA
CROUCH, IJ
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VANSTADEN, J
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UNIV NATAL,DEPT BOT,PLANT GROWTH & DEV RES UNIT,FRD,UN,POB 375,PIETERMARITZBURG 3200,SOUTH AFRICAUNIV NATAL,DEPT BOT,PLANT GROWTH & DEV RES UNIT,FRD,UN,POB 375,PIETERMARITZBURG 3200,SOUTH AFRICA
VANSTADEN, J
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[1] UNIV NATAL,DEPT BOT,PLANT GROWTH & DEV RES UNIT,FRD,UN,POB 375,PIETERMARITZBURG 3200,SOUTH AFRICA
Seaweed concentrate (SWC), prepared from Ecklonia maxima, when applied as a soil drench to tomato seedlings, significantly increased plant growth and reduced infestation by Meloidogyne incognita. Foliar applied SWC had little effect on plant growth and increased nematode galling. Ashing SWC reduced the suppressive effect on nematode infestation. In an in vitro experiment, SWC lessened infestation of root-knot nematodes on excised roots of a susceptible cultivar of tomato. Application of the same concentrations of SWC to a nematode-resistant cultivar increased the number of egg masses.