Water Management for Crop Production (352)

1. INTRODUCTION

In India irrigation potential is created so that in future more land can be irrigated. In the present system hardly 50 percent of the cultivated land is inigated and the irrigation water is not being utilized properly leading to more wastage than its use by crop. While chemical fertilizers supplement the low nutrient supplying capacity of the soil, there is no substitute of water for production of crops. Efficient management of limited irrigation water is of utmost importance for sustaining and increasing agricultural production.

2. Objectives

By undergoing this course the learners shall be able to
understand the soil-water-plant relationship in increasing the yield of crops;
know the time for scheduling irrigation to crops to reduce wastage of irrigation water;
estimate the quantity of irrigation water required in each irrigation and
select suitable methods of irrigation for increasing irrigation efficiency for greater production of crops.

3. Job Opportunity:
self employment : work in own field as wage employment: worker in the field

4. Course Duration
1 Year

4.1 Scheme of Studies – Theory = 60% – Practical = 40%

5. Entry Qualification
10th pass

6. Scheme of Examination
Passing criteria: 33% separately in theory and practical

7. CONTENTS
A) Theory
Module-1-Soil-Water-Plant Relationship
Components of Soil, Solid Phase, Liquid Phase, Gaseous Phase, Living Phase
Store House of Nutrients, Soil Physical Properties, i)Soil Texture, Structure, Water
Available Water

Unit-2 Plant and Atmosphere
Plant Structure, Functions of Water, Moisture Stress and Plant Response, Effective Root Zone Depth, Atmosphere
Module-II- Water Management in Irrigated Agricultural, land
Unit-I Scheduling Irrigation to Crop
Scheduling, i) Soil/Plant, ii) Meteorological Indicators, Scheduling Irrigation to Transplanted Rice
Unit-2 Methods and Depth of Irrigation
Methods of Irrigation, Surface Method, Sub-Irrigation/Sprinkle Irrigation/Drip Irrigation, Optimum Depth of Irrigation Water

B. PRACTICALS
(1) Determination of Soil Moisture Content by Thermogravimetric Method
(2) Determination of Bulk Density/Field Capacity/Permanent Wilting Point.
(5) Use of Tensionmeter for Determination of Soil Moisture Tension
(6) Additional Field Assignments.
i) Layout of different methods of irrigation - Bordership checkbasin, ridge and furrow, ring and basin.
ii) Study of sprinkler and drip methods of irrigation.
iii) Study of tensiometer.
iv) Calculation of net and gross irrigation requirement of crops. Irrigation efficiencies.
v) Demonstration of different systems of irrigation water delivery and loss in distribution of irrigation water.
vi) Visit of irrigation experiments - Irrigation scheduling based on stages of crop growth, irrigation scheduling with the help of tensiometer, gypsum block.

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