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thanx heaps for all ur replies and suggestions. i managed to find stuff on transpiration -pull, called something like tension cohension:D yeah, i quite enjoy ag too. btw, in reply to ur question, i go to james ruse.>.<

:apig: i noticed there isnt much of posting regarding ag, but for those who are doing it, i was wondering what sort of answers and information we're meant to find and have for the points in elective 5-plant management: - explore the theories for water uptake by plants - explain how nutrients...