POTASSIUM/CALCIUM RATIOS OF THE NUTRIENT SOLUTION ON TULIP NUTRIENT STATUS
This study was carried out under greenhouse conditions with the aim to evaluate the effect of the K+/Ca2+ ratios contained in the nutrient solution on the nutrimental status of tulip cv. Ile de France. We tested three potassium levels (5.5, 7.0 and 8.5 molc m-3) and three calcium levels (7.5, 9.0 and 10.5 molc m-3) in the nutrient solution in a 32 factorial experiment. The combination of factors (K+ and Ca2+) and levels of factors resulted in nine treatments. Antagonistic effects of K+ and Ca2+ were evident. However, low Ca supply in the nutrient solution produced a higher Ca uptake by the plant; the same response was observed with K by supplying low levels of it. Nutrimental analyses indicate that Ca partitioning is higher in leaves and stems, while K is more abundant in bulbs.
Ramírez-Martínez, M., Trejo-Téllez, L., Gómez-Merino, F., Sánchez-García, P., Rodríguez-Mendoza, M.N. and Sandoval-Villa, M. (2009). POTASSIUM/CALCIUM RATIOS OF THE NUTRIENT SOLUTION ON TULIP NUTRIENT STATUS. Acta Hortic. 843, 119-122
tulip nutrition, calcium partition, potassium partition