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Section 3 (Crop Management)

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Table 2. Effect of priming duration on grain yield of maize cv.Kisan-90 in Pakistan, 2000. Least<br />

significant difference = 520 kg ha -1 . Values followed by the same letter do not differ at P>0.05.<br />

Priming duration (hours) Grain yield (kg ha -1 )<br />

0 2584a<br />

8 3555b<br />

12 4083b<br />

16 6042c<br />

Table 3. Effect of priming duration on grain yield of maize cv.Kisan-90 in Pakistan, 2000. Least<br />

significant difference = 300 kg ha -1 . Values followed by the same letter do not differ at P>0.05.<br />

Increase in yield (%)<br />

140<br />

120<br />

100<br />

Priming duration (hours) Grain yield (kg ha -1 )<br />

0 1875a<br />

12 2542b<br />

16 3649d<br />

20 3104c<br />

80<br />

60<br />

40<br />

20<br />

0<br />

1 3 5 7 9 1113151719212325272931<br />

Farmer number<br />

- 321 -<br />

Harris et al.<br />

Figure 1. Yield of maize in 32 farmers’ paired-plot trials in NWFP, Pakistan. Data were pooled<br />

from 1999 (11 farmers), 2000 (15 farmers) and 2001 (6 farmers) and are ordered by the yield of the<br />

non-primed plot (light bars) in each trial. Overall mean yield (non-primed) = 1.23 t ha -1 ; overall<br />

mean yield (primed) = 1.71 t ha -1 .

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