By R. Rabbinge (auth.), J. Bouma, A. Kuyvenhoven, B. A. M. Bouman, J. C. Luyten, H. G. Zandstra (eds.)
In the arrival many years the area might want to greater than double its nutrition and feed construction, just about all of the rise being wanted in constructing nations. This has socioeconomic and biophysical implications. conventional part and commodity learn addresses overly slender matters at too small a scale. Rural improvement wishes an eco-regional procedure that integrates biophysical and socioeconomic paintings on cropping platforms, farm animals, the surroundings, and common assets.
This booklet includes the papers, reaction papers and dialogue file of a five-day seminar on eco-regional techniques. It assesses the state-of-the-art of platforms techniques utilized to eco-regional difficulties, offering and discussing a couple of case reports. destiny examine wishes are mentioned, in addition to how one can enhance collaboration among study institutes.
The seminar on which the booklet is predicated was once organised on behalf of the Directorate normal for foreign Cooperation of the Netherlands Ministry of international Affairs by means of the study Institute for Agrobiology and Soil Fertility (AB-DLO), the Wageningen Agricultural collage (WAU), and the foreign Potato Centre (CIP). It used to be held on the overseas carrier for nationwide Agricultural learn (ISNAR), and was once attended by means of members from all CGIAR centres, between others.
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Extra info for Eco-regional approaches for sustainable land use and food production: Proceedings of a symposium on eco-regional approaches in agricultural research, 12–16 December 1994, ISNAR, The Hague
Sample text
Crop! 27 50 These results show that current management practices are not sustainable, regarding soil erosion, and that changes must be incorporated if we expect to achieve sustainable agriculture in the Sierra. 26 Table 8. Cummulative (35 years) erosion control and marginal agricultural production for each selected alternative (1000 metric tons). 00 Productivity Productivity for a fann adopting the proposed management practices will begin to increase after the second year, as in the alpaca case (figure 3).
Those derived from productivity increases, reduced soil erosion, and added value. 50 accrues to the peasant farmer and the society may obtain up to US$25 in added value. Society can invest in natural resource management and conservation projects. These projects should be designed in such a way that positive returns can be obtained, for both farmers and society. The present case study shows sequentially every step for an ex ante evaluation of all the possible scenarios for a natural resource management project.
Productivity is highly enhanced when farmers have access to irrigation. 23 Table 5. Main characteristics of the sheep scenarios evaluated with simulation models (I 00 ha). 14 Alternative 1 3000 * AU - animal unit (400 kg bodyweight). Table 6. Main characteristics of the dairy scenarios evaluated with simulation models. Scenario Potential milk Birthrate Lactation length Rangeland ratio produc. - I % days % % % 550 800 1200 3500 50 180 210 210 305 70 30 20 0 0 0 20 100 100 60 60 70 60 0 0 Overall, ten different technical alternatives proved most promising: two for alpaca production (alpaca I & 2), one for sheep production (sheep), two for crop rotation systems (rota I & 2), three for dairy production (milk I, 2, & 3), and two for areas under irrigation (irrig 1 & 2).