AMMONIUM/NITRATE RATIOS IN HYDROPONIC PRODUCTION OF AROMATIC HERBS
The objective of this experiment was to study the effect of different NH4+/NO3- ratios on the growth, production and quality of three aromatic herbs: chives (Allium schoenoprasum), basil (Ocimum basilicum L.) and dill (Anethum graveofens L.). The herbs were cultivated in a hydroponic system with drip irrigation. A mixture of volcanic rock, locally called tezontle and coconut fiber (60:40) was used as substrate. The universal Steiners nutrient solution was modified to obtain 4 different NH4+/NO3- ratios (0/100, 20/80, 40/60 and 100/0). In chives, the 0/100 ratio significantly increased the leaf area and total biomass production. The greater height, leaf area and total biomass production were obtained in basil with the 20/80 ratio. No significant differences were observed in dill.
González-García, J.L., Rodríguez-Mendoza, M.N., Sánchez-García, P., Osorio-Rosales, B., Trejo-Téllez, L.I., Alcántar-González, G. and Sandoval-Villa, M. (2009). AMMONIUM/NITRATE RATIOS IN HYDROPONIC PRODUCTION OF AROMATIC HERBS . Acta Hortic. 843, 123-128
Allium schoenoprasum (chives), Ocimum basilicum L. (basil), Anethum graveofens L. (dill), nitrogen, nutrient solutions