ISHS Acta Horticulturae 504: VI Symposium on Stand Establishment and ISHS Seed Symposium
NUTRITIONAL EFFECTS ON TRANSPLANT ROOT AND SHOOT GROWTH - A REVIEW |
| Authors: | J.W. Zandstra, A. Liptay |
| Keywords: | root, shoot growth, mineral nutrition, transplant |
| Abstract:
Transplant growth in the greenhouse can be regulated to a large extent by nutrient levels in the fertilizer solution. Nitrogen has been the target of most nutritional research on transplants, and has long been recognized to have the greatest affect on transplant growth. The form of nitrogen in the nutrient solution also appears important in relation to transplant growth. Increases in phosphorous levels in the nutrient solution do not influence transplant growth as dramatically as nitrogen, with little or no response once optimum levels are reached. Varying the potassium level in the nutrient solution has shown little affect on transplant growth as well; however, several studies suggest that fast growing species are more affected by potassium nutrition than slow growing species. Increases in the nutrient supply to vegetable transplants often decreases the root/shoot ratio, yet several studies suggest that plants with relatively large root systems suffer less transplant shock. It is becoming more apparent that nutritional requirements of transplants are dependant upon climate and end use. | |
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