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- on-farm research[remove]10
- test plots[remove]10
- farmers4
- extension3
- extension communication3
- extension programs3
- information sources3
- agriculture research2
- demonstrations2
- diffusion2
- extension agents2
- extension research2
- farming systems research2
- linkages2
- participation2
- research communication2
- Australia (Oceania)1
- Colombia1
- Farm Journal1
- Guinea1