Nitrogen, Potassium, and Nitrate Concentrations of Lettuce Grown in a Substrate with KNO₃-Enriched Zeolite

The influence of compost and zeolite co‐addition on the nutrients status and plant growth in intensively cultivated Mediterranean soils

“…Transforming this experiment to a whole‐field setting would require extremely high amounts of zeolites, which makes such agronomic practice cost prohibitive especially in countries that must import zeolites. A study of nutrients uptake by lettuce grown on sand enriched with zeolites showed that zeolites enriched with KNO 3 improved the nutrient content in the lettuce (Bernardi et al ., ). An optimal addition of 78 g per pot was computed which represents an affordable dose to a suitable yield with high product quality.…”

Second Cheese Whey Treatment Using Zeolite under Continuous Flow Mode and Its Application on Wheat Growth

“…This could imply that the amounts of zeolite used in these experiments were not adequate to significantly increase the growth of wheat plants, especially considering that the amounts of nitrogen amount added to the pots ranged from 1 kg/ha to 6 kg/ha when the recommended amount for wheat is 125 kg/ha [56]. The addition of larger amounts of saturated zeolite was not possible due to the spatial confines of the small, laboratory-scale experiments and to previous suggested zeolite masses per kg of soil in previous related studies [43][44][45][46].…”

“…Only a few studies [43][44][45][46][47][48] have examined the use of saturated zeolite as a potential fertilizer replacement, and these mainly used nutrient-rich aqueous solutions to saturate zeolite with nitrogen and phosphorus. For example, (a) saturated zeolite with phosphorus [43,45] that increased the growth of lettuce, tomato, rice, and Andropogon grass by 20%; (b) saturated zeolite with urea [44] that increased silage corn's dry-matter leaf production; (c) saturated zeolite with potassium nitrate [46] that increased lettuce yield; (d) saturated zeolite with ammonium and potassium [47] to increase spinach yield; and (e) zeolite enriched with cations in soilless cucumber cultures [48].…”

Why nonconventional materials are answers for sustainable agriculture

“…51,52 In fact, some authors have explored zeolite application for many different cultures (pastures, lettuce, tomato, rice, corn, etc. ), [53][54][55][56] showing that this effect is universal, i.e., not associated with a specific aspect of any culture but to the nutrient dynamics in soil. In fact, the main drawback for this technology is the relative zeolite content, which is relatively high considered the fertilizer application-to reduce these amounts, their use as direct coating over granules has also been proposed.…”