02128naa a2200265 a 450000100080000000500110000800800410001910000260006024501740008626000090026052012960026965000230156565000190158865000170160765300150162465300280163965300170166765300130168470000230169770000200172070000190174070000160175970000180177577300690179318635972023-07-04       2010    bl uuuu     u00u1 u    #d1 aBERNARDI, A. C. de C.  aDry matter production and nutrient accumulation after successive crops of lettuce, tomato, rice, and andropogon grass in a substrate with zeolite.h[electronic resource]  c2010  aZeolites are hydrated crystalline aluminosilicate minerals of natural occurrence, structured in rigid third dimension net that can be used as slow release plant-nutrient source. The main objective of this study was to evaluate the effects of plant growth substrate under zeolite application, enriched with N, P and K, on dry matter yield and on nutrient contents in consecutive crops of lettuce, tomato, rice, and andropogon grass. The experiment was carried out in a greenhouse, with 3 kg pots with an inert substrate, evaluated in a randomized block design with three replications. Treatments consisted of four types of enrichment of concentrated natural zeolite: concentrated zeolite (Z) only, zeolite + KNO3 (ZNK), zeolite + K2HPO4 (ZPK) and zeolite + H3PO4 + apatite (ZP), and a control grown in substrate fertilized with a zeolite-free nutrient solution. Four levels of enriched zeolite were tested: 20, 40, 80, and 160 g/pot. Four successive crops were grown on the same substrate in each pot: lettuce, tomato, rice, and andropogon grass. Results indicated that N, P and K enriched zeolite was an adequate slow-release nutrient source for plants. The total dry matter production of above-ground biomass of four successive crops followed a descending order: ZP &gt ZPK &gt ZNK &gt Z. I  aAndropogon Gayanus  aLactuca Sativa  aOryza Sativa  aFertilizer  aLycopersicum esculentum  aSlow-release  aStilbite1 aMONTE, M. B. de M.1 aPAIVA, P. R. P.1 aWERNECK, C. G.1 aHAIM, P. G.1 aBARROS, F. de  tRevista Brasileira de Ciência do Sologv. 34, p. 435-442, 2010.