GRIPS 政策研究センター Policy Research Center

客員研究員

2008/6/2 Report No:08-03

Dairy-Banana Integration and Organic Fertilizer Use in Uganda

著者
  • 山野 峰政策研究大学院大学
分野 経済学
言語 英語
要旨

An intensive dairy and crop farming system found in the East African highlands
provides manure and urine, taken from stalls of improved dairy cattle, for crops such as
banana. By using panel data of 894 rural households in 2003 and 2005 in Uganda, we
find that the number of improved cattle per ha increases the organic fertilizer
application on banana plots by 218 kilograms per ha. We also find that banana farmers
applied more organic fertilizer on less fertile soils. Regarding banana yield, we find
that one ton of the organic fertilizer per ha increases the banana yield by 10 percent, and
a one percentage point increase in the soil organic matter (SOM) increases the banana
yield by 7 percent. Because the organic fertilizer application improves the SOM in the
long-run, it has a long-term impact on the banana yield. The intensive dairy and
banana cropping system is an appropriate farming system in Uganda where soil
degradation is severe and mineral fertilizer is expensive.

キーワード Organic Fertilizer, Improved Cattle, Banana, Uganda, JEL classification: Q12, R23, J22
添付ファイル 08-03.pdf