Mineral profile of lettuce and onion from organic greenhouse production
The purpose of this study was to examine the effect of production systems (organic ORG or conventional CON) and growing cycle (fall-winter or spring-summer) of cos lettuce (Lactuca sativa L. var. longifolia Parris Island) and green onion (Allium cepa Sturon) as companion planting, on the mineral composition. Lettuce from CON systems contained more Ca, Mg, Mn, Fe, Cu compared to ORG production. Lettuce plants in both production systems had higher content of K, B, Zn and Fe than onion. ORG grown onion at both growing cycles had higher content of all macro- and micro-elements (except Cu) than the CON grown ones. The general order of the mineral content in both plants was K>Ca>Mg>Fe>Mn>B>Zn>Cu. Companion planting can result in an increase in the productivity of vegetables per unit area.
Ilić, Z.S., Kapoulas, N., Koukounaras, A. and Mirecki, N. (2021). Mineral profile of lettuce and onion from organic greenhouse production. Acta Hortic. 1326, 17-24
method of production, time of production, nitrogen, phosphorus, potassium, calcium, magnesium, iron