Conservation agriculture- a new pathway for agricultural development Jens B. Aune Agro-ecologist,...
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Transcript of Conservation agriculture- a new pathway for agricultural development Jens B. Aune Agro-ecologist,...
![Page 1: Conservation agriculture- a new pathway for agricultural development Jens B. Aune Agro-ecologist, Noragric, UMB.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ef15503460f94c01924/html5/thumbnails/1.jpg)
Conservation agriculture- a new pathway for agricultural development
Jens B. AuneAgro-ecologist, Noragric, UMB
![Page 2: Conservation agriculture- a new pathway for agricultural development Jens B. Aune Agro-ecologist, Noragric, UMB.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ef15503460f94c01924/html5/thumbnails/2.jpg)
![Page 3: Conservation agriculture- a new pathway for agricultural development Jens B. Aune Agro-ecologist, Noragric, UMB.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ef15503460f94c01924/html5/thumbnails/3.jpg)
Disadvantage of the system
• Low yields because sowing is delayed
• Low soil organic matter content
• High soil erosion
• Inputs are not efficiently utilized
• Most of the fodder resources are used by oxen
• Female households are in particular vulnerable situation because the man who ploughs takes up to 50% of the harvest
![Page 4: Conservation agriculture- a new pathway for agricultural development Jens B. Aune Agro-ecologist, Noragric, UMB.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ef15503460f94c01924/html5/thumbnails/4.jpg)
Principles of conservation agriculture
• Direct sowing
• Soil cover (mulch)
• Crop rotations
Improved soil fertility management is often a requirement
![Page 5: Conservation agriculture- a new pathway for agricultural development Jens B. Aune Agro-ecologist, Noragric, UMB.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ef15503460f94c01924/html5/thumbnails/5.jpg)
Advantages of cons. agr. • Resembles a natural eco-system-
soil is continuously covered
• Build soil organic carbon
• Less soil erosion
• No turning of the soil- less use of energy (30-40 % less use of energy)
• Yields comparable to conventional agriculture
• Less need to keep oxen
![Page 6: Conservation agriculture- a new pathway for agricultural development Jens B. Aune Agro-ecologist, Noragric, UMB.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ef15503460f94c01924/html5/thumbnails/6.jpg)
Forms of conservation agriculture
6
Planting basins Ripping
Photo: Progress Nyanga Photo:CFU Zambia
![Page 7: Conservation agriculture- a new pathway for agricultural development Jens B. Aune Agro-ecologist, Noragric, UMB.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ef15503460f94c01924/html5/thumbnails/7.jpg)
Tractor ripping – dry season ripping
Photo:CFU Zambia
![Page 8: Conservation agriculture- a new pathway for agricultural development Jens B. Aune Agro-ecologist, Noragric, UMB.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ef15503460f94c01924/html5/thumbnails/8.jpg)
No input
Fertiliser and mulching (millet straw)
Mil
let b
iom
ass
yiel
d (k
g ha
-1)
Lessons from the Sahel drought in the 1980s. Millet production in Niger (Bationo and Buerkert 2001)
![Page 9: Conservation agriculture- a new pathway for agricultural development Jens B. Aune Agro-ecologist, Noragric, UMB.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ef15503460f94c01924/html5/thumbnails/9.jpg)
Conservation agriculture in the Horn of Africa
i• Conservation agriculture should be more
actively promoted in the Horn of Africa
• Agriculture becomes more resistant to climate change
• Improvements in livestock production
• Positive environmental effects
![Page 10: Conservation agriculture- a new pathway for agricultural development Jens B. Aune Agro-ecologist, Noragric, UMB.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ef15503460f94c01924/html5/thumbnails/10.jpg)
Conservation agriculture in a global context
• The only agricultural system that can feed 9 billion people in a sustainable way.
• Should also be more promoted under temperate agricultural conditions like in Norway
• International and Norwegian research (Apelsvoll) tell that conservation agriculture has less GHG and nitrogen emission per kg produced food than organic and conventional agriculture.
![Page 11: Conservation agriculture- a new pathway for agricultural development Jens B. Aune Agro-ecologist, Noragric, UMB.](https://reader036.fdocuments.us/reader036/viewer/2022062314/56649ef15503460f94c01924/html5/thumbnails/11.jpg)
There is a need for a stronger policy push of conservation
agriculture internationally as well as domestically.