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mededelingen der zittingen bulletin des seances - Royal Academy ...

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YEAR<br />

AND<br />

SEASON<br />

(A, B)<br />

III<br />

IV<br />

VI<br />

SP<br />

SP<br />

SP<br />

SP<br />

EE<br />

■ F C B SP<br />

B RC<br />

F l<br />

F l RC<br />

F2<br />

F2<br />

F l<br />

F l<br />

C<br />

C<br />

C<br />

RC<br />

— 267 —<br />

PLOT NUMBER (each plot is 0.15 ha)<br />

___ S3 land ________________________<br />

___ S2 land ________________________<br />

----- SI land ----------------------------<br />

SP<br />

B<br />

S<br />

SP<br />

SP<br />

8 10 11 12 13 14<br />

Legend :<br />

I C : cassava<br />

I SP : sw eet potato<br />

■ B : beans<br />

I S : sorghum<br />

F : fallow<br />

Fig. 4. — C rop rotation and farm size un<strong>der</strong> traditional farming in the S outh Kivu test area.<br />

The suggested farm size depends on the length of the fallow period which<br />

is determined by the land suitability :<br />

51-land : 12.7 ha<br />

Residential plot .................................................................................................................. 0.10 ha<br />

Banana field ........................................................................................................................ 0.30 ha<br />

Rotation crops and fallow (10 plots of 0.15 h a )........................................................ 1.50 ha<br />

T otal...................................................................................................................................... 1.90 ha<br />

Number of farms : 6.6<br />

52-land : 31.0 ha<br />

Rotation crops and fallow (12 plots of 0.15 h a )........................................................ 1.80 ha<br />

T otal...................................................................................................................................... 2.20 ha<br />

Number of farms : 14.0

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