TABLE OF CONTENTS

CHAPTER ONE: INTRODUCTION - - - - - - - - - - - - - - I

4.0 Data availability probletn in agricultural Engineering designs in Nigeria - - - - - - - - I

1.1 Significance of the project - - - - - - - - - 6

1.2 Statement of objectives - - - - - - - - - - - 7

CHAPTER TWO: LITFfiTURE REVIEW - - -- - - - - - - - - 8

Analysis of 2ainfuli Data - - - - - - - - - - - 8

Frequency Analysis - - - - - - - - - - - - - - 9

Probability Analysis - - - - - - - - - - - - - I1

Water Requirement of Crops - - - - - - - - - - 14

Estimation of Water Requirements of Crops - - - 7 5

Emperical Methods of Jikapotranspiration

Determination - - - - - - - - - - - - - - - - - 16

Estimation of Evapotranspiratian using the

Evaporation Index - - - - - - - - - - - - - - - 79

Estimation of Drainage Requirements - - - - - - 20

TABLE OF CONTENTS (CONTD. )

3.1 Data Collection - - - - - - - - - - - - - - -

3.1 Location and Description of the Study Area - -

12 Types of hta - - - - - -- - - - - - - - - -

3.2.1 Monthly, Annual Rainfall and hhaporation - - -

3.2.2 Rainfall Frequency Analysis - - - - - - - -.-

3,2.3 Rainfall and hkaporation Probability Analysis

3.2.4 Do termination of Minirnum Aocep-t;uble Length of Records-------------------

3.2.5 Prediction of Rainfall Deficito and Surpluses

3.2.6 Determination of Evapotranspiration and Crop

CHAPTEZ FOUR: RESULTS AND DISCUSSIOIYS

4.2.2 Frequency Analysis 7 - - - - - - - - - - - -

4.2.3 Probability Analysis - - - - - - - - - - - -

4.2.4 Prediction of Rainfall Deficits and Surplusee

4.2.5 Determination of hkapotran~p.iration and Crop

4,2.6 Determination of Drainage Coefficients - - - -

CHAPTER FIVE: CONCLUSIONS AND RECOMMENDATIONS - - - -

REFERENCES

APPEXlDICES