AbstractsBiology & Animal Science

Twenty-seven fertilizer treatments with celery were set out in duplicate on muck soil on 1/57.6 acre plots. The yields were recorded by weight, and analysed by the analysis of variance. Nitrogen, phosphorus and potash all gave very significant increases over the nil treatment. Doubling the phosphorus and potash in the basic treatment resulted in further increments in yield. Celery was grown in quartz sand in the greenhouse and nutrients approximating the fertilizers used in the field were applied as nutrient solutions. The effect of nitrogen, phosphorus and potash on the growth of tops and roots and on the number of leaves is discussed together with top/root ratios. The basic treatment gave the tallest plants. The basic treatment with an additional 16 per cent of potash gave the greatest weight of tops as well as the greatest weight of roots. Potash did not influence either the weight or the length of roots. [...]