Strategic rice cultivation with energy crop rotation in Southeast Asia
Strategic rice cultivation with energy crop rotation in Southeast Asia
Strategic rice cultivation with energy crop rotation in Southeast Asia
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Activity II: Comparative evaluation of specific <strong>crop</strong> <strong>rotation</strong><br />
practices<br />
Carbon cycle:<br />
The <strong>cultivation</strong> system of corn <strong>rotation</strong> <strong>with</strong> ra<strong>in</strong>fed <strong>rice</strong> enabled to achieve the<br />
highest soil carbon sequestration benefit (after 4 th <strong>crop</strong> harvest<strong>in</strong>g). This is due<br />
ma<strong>in</strong>ly to the organic matter added to the soil <strong>in</strong> the form of manure and <strong>crop</strong><br />
residue re-<strong>in</strong>corporation.<br />
Some socio-economic benefits:<br />
Double <strong>crop</strong>p<strong>in</strong>g systems (<strong>rice</strong>-<strong>rice</strong> or <strong>rice</strong> <strong>with</strong> another <strong>crop</strong>) enable to enhance<br />
farmers’ <strong>in</strong>come as compared to s<strong>in</strong>gle <strong>crop</strong>. Income to farmers for the <strong>crop</strong>p<strong>in</strong>g<br />
systems <strong>in</strong>vestigated <strong>in</strong> this research were estimated, as follows:<br />
• For <strong>rice</strong>-<strong>rice</strong> <strong>crop</strong>p<strong>in</strong>g systems: 21,469-50,226 THB/ha/year<br />
• For corn-<strong>rice</strong> <strong>rotation</strong> systems: 22,749-51,017 THB/ha/year<br />
• For sweet sorghum-<strong>rice</strong> <strong>rotation</strong> systems: 18,029-58,581 THB/ha/year<br />
Crop <strong>rotation</strong> systems not only contribute to provide more <strong>in</strong>come to farmers but<br />
also job opportunity <strong>in</strong> the agricultural sector.
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