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Adaptation of vegetable system to urban areas in Meknés, Yaoundé and Hanoi

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Academic year: 2021

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Adaptation of vegetable system to urban areas in Meknés, Yaoundé and

Hanoi

Hubert de Bon1,laurent Parrot1,Joel Sotamenou1,Patrick Duguél 1

UR HortSys - (IRAD - Montpellier - France

2IRAD _Yaoundé- Cameroun

3UMR Innovation _ CIRAD - Montpellier - France

Introduction

The vegetable production is il large part of the urban and peri-urban (UPU) agriculture system. Sorne specificities oould be identified trom these UPU vegetable cropping systems short cycles, perishable high value, crops, with intensive production techniques in terms of manpower and inputs. This paper stresses the adaptations made by the UPU growers 10 look for sources of inputs and an efficient use of them. Focus will be put on the fertilizer nltragen. Nitrogen is coming trom different sources: chemical fertilizer, organic malter, compost, manures and city wastes.

Methods

Three cases are analyzed: the nitrogen balance in vegetable cropping systems in and around Meknes in relation with the sources of nitrogen, use of organic matter in Yaoundé peri-urban agricultural farms and management of city solid wastes, organic matter in vegetable farm in Hanoi.

Resulta

There is a broad range of agricultural practices concerning the organic matter and management of nitrogen fertilization between

the cities but also within the cities in relation with different factors as the location, the type of farming system and the distance between the farm and the organic matter sources.

Conclusions

Sorne suggestions are made on a more sustainable management of nitrogen in UPU agriculture.

References

de Bon H, Fleury A, To Thi Thu Ha. 2010. Using organic wastes as a source of nutrients, the need of raising awareness. Urban Agriculture magazine, n023, 2010, 34 et 38.

Blanchard M, Vayssières J, Dugue P, VaU E. 2013. Local technical knowledge and efficiency of organic fertilizer production in South Mali diversity of practices. Agroecology and sustainable food systems, 37, 6, 672-699.

Parrot L., Sotamenou l, Dia Kamgnia B., Nantchouang A. 2009. Determinants of domestic waste input use in urban agriculture lowland systems in Africa: The case of Yaoundé in Cameroon. Habitat international

Keywords: nitrogen, urban and peri-urban agriculture, vegetables, organic wastes Presentinl: author: Dr Hubert de Bon, hubert.de bon@cirad.fr

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