Summary of collected data through references and field experiments.
|Type||No. of data||Source|
|VSF||441||Rajaratnam et al. (1986, 1992), FAO/DVWK (2002), Puertas et al. (2004) and 4 field cases, 2 included in Fuentes-Pérez et al. (2014)|
|PWF||180||3 field cases, 1 included in Fuentes-Pérez et al. (2016)|
|SPNF||45||1 field case|
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