Garcia, G. J.Biazon, M. M.2014-05-262014-05-261981-12-01Engenharia Agricola, v. 5, n. 2, p. 21-23, 1981.0100-6916http://hdl.handle.net/11449/63537Landsat images obtained in different periods were analysed with the aid of a transmission densitometer. Forest, pasture and crops were studied during Jan., April, July and Oct. and the results suggest the possibility of studying crop cycles using this method. -from Field Crop Abstracts21-23porArtigoAcesso restrito2-s2.0-0019744781