Odisha CHSE +2 VOC Micro Irrigation Technician study plan

Define soil water constants (field capacity, permanent wilting point, available water capacity) and compute available water for a given soil texture and root-zone depth

Calculate reference evapotranspiration inputs and convert ETo to crop water requirement using a crop coefficient for two different growth stages

Classify the main micro irrigation system types (surface drip, subsurface drip, micro-sprinkler, mini-sprinkler) and state one crop situation suited to each

Sketch a labelled layout of a drip system from water source to emitter, naming headworks, mainline, submain, lateral and emitter components

List the emitter types (inline pressure-compensating, non-compensating, micro-tube, micro-sprinkler) and state the discharge and clogging risk of each

Compute emitter discharge, number of emitters per plant and per lateral from spacing, plant spacing and application rate

Determine irrigation duration and interval from crop water requirement, emitter discharge and application efficiency

Select lateral diameter and check friction loss so that pressure variation along the lateral stays within the accepted design limit

Compare the components of a drip headworks (screen, sand, disc filters, venturi, injector pump, air valve, pressure regulator) and assign the correct position of each in the layout

Draw a block diagram of a drip system for a 1-hectare plot showing valve and filter positions

Describe the standard installation sequence for a drip system, from headworks assembly and mainline trenching to lateral laying and flushing

Compute sprinkler spacing, application rate and precipitation rate, and check that the application rate does not exceed the soil infiltration rate

Select sprinkler nozzle size and operating pressure for a given discharge and spacing, and compute wetted diameter coverage overlap

Explain the layout differences between solid-set, semi-portable and portable sprinkler systems and state when each is preferred

List commissioning checks: pressure test, flushing, emission uniformity test and leak inspection

Match pump type (centrifugal, submersible, monoblock) to water source and head requirement, and read a pump curve to find the duty point

Compute total dynamic head for a given system and select a pump whose duty point matches the design flow and pressure

Size a sand filter and screen filter from flow rate and mesh or media specification, and state the backwash frequency criteria

Explain fertigation methods (venturi, dosing pump, tank injection) and compute the fertilizer quantity for a target nutrient dose in the root zone

Assess water quality parameters (pH, EC, hardness, iron, suspended solids) and state the treatment or filter response for each problem

Diagnose the ten most common drip faults (clogged emitter, broken lateral, leak at joint, low pressure, uneven discharge, filter blockage, air lock, valve failure, pump cavitation, root intrusion) and state cause and remedy for each

Perform a field emission uniformity test and interpret the result against an acceptable threshold

Describe the chemical and acid flushing procedure, including safety controls and disposal of flush water

Apply electrical and mechanical safety rules for pump and control panel work, including lockout and personal protective equipment

Identify environmental safeguards: preventing fertilizer backflow into the source, safe chemical storage, and disposal of flushed water and damaged plastic

Build an irrigation schedule for one open-field crop and one protected-cultivation crop using crop coefficient, pan evaporation or soil moisture depletion

Explain the role of mulching, protected cultivation structures and root-zone volume in reducing water use, and adjust a schedule accordingly

Compute energy consumption per unit of water pumped and identify three measures that improve energy efficiency

Size a storage tank or farm pond from daily demand, irrigation interval and buffer requirement

Interpret a soil moisture sensor reading and convert it into an irrigation trigger point for a given soil

Configure a simple automation setup (controller, solenoid valves, soil moisture or timer trigger) and describe the fail-safe behaviour on power or sensor failure

Prepare an itemised cost estimate for a 1-hectare drip system, separating material, labour, installation and contingency

Explain the structure of the subsidy process for micro irrigation, including the role of the implementing agency, beneficiary documents and inspection before release of funds

Draft a field service plan covering installation, preventive maintenance visits, response time and record keeping

List the records a technician must maintain: design sheet, commissioning report, service log and farmer handover note

Revise all ten domains using a single formula sheet covering soil water, irrigation scheduling, friction loss, precipitation rate, total dynamic head and emission uniformity

Complete two timed mixed-domain practice sets and correct every wrong answer with a written reason

Re-derive the five calculations most often missed: available water capacity, irrigation duration, precipitation rate versus infiltration rate, total dynamic head and emission uniformity

Rehearse explaining one complete system design and one fault diagnosis aloud, as for a field or viva assessment