 Sustainable
Agriculture Extension Manual |
Part 6 
Soil fertility
What do you know about the soil? 124
What types of organic matter do you have? 125
How should you use organic matter? 128
Tithonia, 130
Promoting minimum tillage in Tanzania, 133
Deep soil preparation (double digging), 134
Susanna Gatundu's farm, 140
Pile method, 143
Pit method, 146
Using compost, 146
Examples of green-manure crops, 148
Green manuring in Rachuonyo District, Kenya, 149
Planting as a pure stand, 150
Planting green manures as an intercrop, 152
Using soil as inoculant, 154
Cattle-manure ash in Zambia, 156
Using urine-manure slurry as fertilizer, 159
Using fresh slurry, 160
Preparation, 162
Application, 162
Manure tea from tithonia or comfrey, 163
Shifting kraals to improve soil fertility, 164
John Kooma Mutema's kraal, Kalomo, Zambia, 165
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