Code Number Treatments combination  Code Number Treatments combination
1 C 9 SI+TD
2 GP 10 SI+F
3 SI 11 TD+F
4 TD 12 GP+SI+TD
5 F 13 GP+SI+F
6 GP+SI 14 GP+TD+F
7 GP+TD 15 SI+TD+F
8 GP+F 16 SI+TD+F+GP
C=Control, GP=gypsum, SI=supplementary irrigation, TD=tied ridge, F=fertilizer (DAP)
Table 1: list of treatments and treatments combinations.