Table 5.
crop | WRSI | yield, kg | excess allowing one season's reserve in storage, kg | income from excess, Rand | income from excess from two harvests, Rand |
---|---|---|---|---|---|
maize | 3 | 216 | 36 | 63 | 126 |
4 | 285 | 105 | 184 | 368 | |
5 | 357 | 177 | 310 | 620 | |
6 | 423 | 243 | 425 | 851 |
WRSI, Water Requirements Satisfaction Index, converted to classes of increased water availability.