Table 7. Wheat yields on continuous cropping, cornland and fallow, fertilized and unfertilized.
Treatment Plots Yield BPA
1 2 3 Av.
S.P. continuous 71,80,103 6.5 6.9 6.7 6.7
S.P. continuous, fertilized 70,81,102 10.2 7.5 6.5 8.1
Fallow 69,82,101 10.2 10.4 12.6 11.1
Fallow, fertilized 67,84,99 11.2 11.6 15.9 12.9
Disked cornland 63,88,95 7.7 6.7 7.5 7.3
Disked cornland, fertilized 65,86,97 12.4 5.5 7.9 8.6