John M. Roche <cm1975 at ccub.wlv.ac.uk> wrote in article
<5mmfnv$ctp at ccuh.wlv.ac.uk>...
> Does anyone know of a textbook or has knowledge on hydroponics that
> provides information such as the basic conditions that are applied
> to plants grown hydroponically? Info is for an A level student looking
> at what factors could be varied in an experiment.( general I know but
> info is for A level student). Sunflower is to be the test plant e.g.
> recommended Temp, nutrients -levels and types.
>Hydroponic Food Production, by HM Resh, Woodbridge Press, Santa Barbara CA
USA, ISBN 0-88007-171-0, is a good general purpose reference that answers
the questions you have.