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Key Words and Phrases: - eCommons@Cornell - Cornell University

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-32-<br />

Table 6. Effect of method of l<strong>and</strong> preparation on dry soil losses due to erosion <strong>and</strong> on<br />

fresh root yield of cassava planted on 25% slope in SCATC, Hainan, China (1989).<br />

Soil loss Root yield<br />

Treatments (t/ha) (t/ha)<br />

2 plowing, 2 discing, contour ridging 71 26.3<br />

2 plowing, 2 discing, no ridging 141 26.0<br />

1 plowing, no ridging 91 21.3<br />

4-m wide plowed strip alternated by<br />

1-m strip without preparation 145 23.5<br />

2-m wide plowed strip alternated by<br />

0.5-m strip without preparation 82 22.6<br />

h<strong>and</strong> preparation of planting holes with hoe 38 25.5<br />

no preparation 60 22.6<br />

* Cultivar SC 205<br />

Source: Zheng eta/., 1991.

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