Working Group 2

1. SIMULATING THE IMPACT OF CLIMATE CHANGE ON YIELD
REDUCTION OF VEGETABLE CROP PROPAGATION USING CROPWAT-8
by
EWEMOJE, T. A. and ASHAOLU, P. O.
Agricultural and Environmental Engineering Department, University of Ibadan,
Ibadan, Nigeria.
Introduction Results
• Man’s activity such as deforestation Inconsistent variability in climate
has lead to climate change. change under CD, NI and DI.
• Climate change has both negative and Yield reduction was low under CD
positive impact on agriculture. and high for both DI and NI.
• This impact can be determined using No significant difference (p<0.05)
sensitivity analysis. between CD and NI.
• A simulation model is needed to carry Significant differences existed, at p <
out sensitivity analysis. 0.05 between DI and CD, also
• CROPWAT model was used. between at DI and NI.
Coefficient of determination (R2) is
Objectives
close to 1 therefore model is valid.
• Simulation of climate change impact
Yield reduction was low between July
on vegetable propagation using
and October, depicting better yield
CROPWAT-8.
during rainy season.
• Analyse weather forecasting for a 9-
year period for vegetable crop yield in
response to climate change.
• Model crop yield sensitivity to
changes in weather data in a tropical
environment.
Methods Source: www.fao.org/nr/water
• Study area: Ibadan, Nigeria. Conclusion
• Data: Climatic, Soil and Crop. Climate change is not constant
• Irrigation Schedule: No Irrigation, phenomenon, its ever changing.
irrigation (NI) and Critical Depletion Critical depletion is most preferred
(CD) with Definite Interval (DI). under uncertainty in variability of
• Statistics: Descriptive (Mean), Least climate change.
Square Difference (LSD) and T test. Planting should be done between July
and October; to reduce impacts of
climate change on yield.