b    NANOCAPSULES OF UREA IN CHITOSAN AND POLYMETHACRYLIC ACID AND THEIR APPLICATION TO HYDROPONIC CULTURE OF LETTUCE (Lactuca sativa L)

 

A. Ledezma Delgadillo, R. Carrillo González, E. San Martín Martínez, M. R. Jaime Fonseca, M. A. Chacón López