Agro-ecological land Resources Assessment for agricultural Development Planning - A case Study of Kenya-Technical Annex 3
| Agro-ecological land Resources Assessment for agricultural Development Planning - A case Study of Kenya-Technical Annex 3 |
AGRO-ECOLOGICAL LAND RESOURCES ASSESSMENT FOR AGRICULTURAL DEVELOPMENT PLANNING
A CASE STUDY OF KENYA
RESOURCES DATA BASE AND LAND PRODUCTIVITY
Technical Annex 3
Agro-climatic and Agro-edaphic Suitabilities for Barley, Oat, Cowpea, Green Gram and Pigeonpea
A.H. Kassam, H.T. van Velthuizen, G.W. Fischer and M.M. Shah
Land and Water Development Division Food and Agriculture Organization of the United Nations and International Institute for Applied Systems Analysis 1991
The FAO/AEZ system permits the user to organize and apply available primary and secondary information in the formulation of agro-climatic and agro-edaphic suitabilities for computer processing of land suitability. The suitabilities may be reviewed and updated at any time in the light of additional information and/or specific requirements.
The designations employed and the presentation of the material in this document do not imply the expression of any opinion whatsoever on the part of FAO or IIASA concerning the legal or constitutional status of any sea area or concerning the delineation of frontiers.
M-51
ISBN 92-5-103307-2
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© FAO 1993
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4 CROPS AND LAND UTILIZATION TYPES
5 AGRO-CLIMATIC SUITABILITY CLASSIFICATION
5.1 Crop Climatic Adaptability
5.3 Matching of Crops to Thermal Zones
5.4 Matching of Crops to Growing Period Zones
6 AGRO-EDAPHIC SUITABILITY CLASSIFICATION
Figures
2.1 Schematic presentation of the methodology
3.1 Make-up of the land resources data base
7.1 Schematic presentation of the land suitability assessment programme for crop production
7.2 Generalized land suitability for rainfed production of barley at intermediate level of inputs
7.3 Generalized land suitability for rainfed production of oat at intermediate level of inputs
7.4 Generalized land suitability for rainfed production of cowpea at intermediate level of inputs
7.5 Generalized land suitability for rainfed production of green gram at intermediate level of inputs
7.6 Generalized land suitability for rainfed production of pigeonpea at intermediate level of inputs
Tables
1.1 List of crops for rainfed productivity assessment
4.1 Attributes of land utilization types
5.1 Average photosynthesis response of individual leaves of four groups of crops to radiation and temperature
5.2 Climatic adaptability attributes of crops
5.4 Patterns of growing periods (LGP-Patterns) - Historical profiles of occurrence of number of growing periods per year
5.5 Relationship between mean total dominant and mean total associated lengths of growing period
5.6 Relationship between individual component mean length and mean total length of growing period
5.7 Thermal zone suitability ratings
5.8 Maximum rates of photosynthesis (Pm in kg CH2O ha-1 hr-1)
5.9 The photosynthetically active radiation on very clear days (Ac) in cal cm-2 day-120 and the daily gross photosynthesis rate of crop canopies on very clear (bc) and overcast (bo) days in kg CH20 ha-1 day-1 for Pm = 20 kg CH20 ha-1 hr-1
5.10 Crop characteristics considered in the potential biomass and yield computations
5.11 Constraint free potential net biomass (Bn) and yield (By) in t/ha dry weight
5.12 Agro-climatic constraints by crop
5.13 Crop yields (t/ha dry weight) for individual lengths of growing periods at low level of inputs
5.14 Crop yields (t/ha dry weight) for individual lengths of growing periods at intermediate level of inputs
5.15 Crop yields (t/ha dry weight) for individual lengths of growing periods at high level of inputs
5.16 Agro-climatic suitability classification and yields (with agro-climatic constraints) in t/ha dry weight for barley
5.17 Agro-climatic suitability classification and yields (with agro-climatic constraints) in t/ha dry weight for oat
5.18 Agro-climatic suitability classification and yields (with agro-climatic constraints) in t/ha dry weight for cowpea
5.19 Agro-climatic suitability classification and yields (with agro-climatic constraints) in t/ha dry weight for green gram
5.20 Agro-climatic suitability classification and yields (with agro-climatic constraints) in t/ha dry weight for pigeonpea
5.21 Fluvisols ratings at low level of inputs
5.22 Fluvisols ratings at intermediate level of inputs
5.23 Fluvisols ratings at high level of inputs
6.1 Crop edaphic adaptability inventory
6.6 Quartiles of slope classes
6.7 Relation between basic soil requirements for crops and soil characteristics
6.8 Diagnostic horizons and properties of soil units
6.9 Soil unit ratings for high, intermediate and low levels of inputs
6.10 Stoniness ratings for high, intermediate and low levels of inputs
6.11 Soil phase ratings for high, intermediate and low levels of inputs
6.12 Relationships between topsoil loss and yield loss
6.13 Ranking of soils (Kenya Soil Survey) according to their susceptibility to productivity loss per unit of topsoil loss
6.14 Regeneration capacity of topsoil (mm/year)