Agriculture Reference
In-Depth Information
2
Enhancing Soil Security
for Smallholder
Agriculture
Johan Bouma, Niels H. Batjes,
M.P.W. Sonneveld,
*
and Prem Bindraban
CONTENTS
2.1 Introduction .................................................................................................... 18
2.1.1 Broader Picture ................................................................................... 18
2.1.2 Role of Soils ........................................................................................ 19
2.2 Materials and Methods ................................................................................... 20
2.2.1 Soil Security Concept ......................................................................... 20
2.2.2 Ecosystem Services: Role of Soils ...................................................... 21
2.2.2.1 Introduction .......................................................................... 21
2.2.2.2 Selection of Case Studies Focusing on “Use of Fertilizers”... 22
2.2.2.3 Risk of Gloom ...................................................................... 24
2.3 Results ............................................................................................................. 25
2.3.1 Semiarid Arenosols and Lixisols in Zimbabwe ................................. 25
2.3.2 Nitosols and Vertisols in the Central Highlands of Ethiopia ............. 26
2.3.3 Ferralsols in Mozambique .................................................................. 27
2.3.4 Nitosols, Ferralsols, and Acrisols in Western Kenya ......................... 27
2.3.5 Sapric Histosols in the Western Part of the Netherlands .................... 28
2.3.6 Gleyic Podzols in the Netherlands ...................................................... 29
2.4 Message from Dutch Farmers to Smallholders of Developing Countries ...... 30
2.5 Discussion ....................................................................................................... 31
2.5.1 Smallholder Agriculture and the Planetary Boundary of Land Use ... 31
2.5.2 Role of Soil Science ............................................................................ 31
2.5.3 Other Factors Determining Soil Security ........................................... 32
2.6 Conclusions ..................................................................................................... 33
Acknowledgment ..................................................................................................... 34
References ................................................................................................................ 34
*
Deceased.
17
