Weed and Water Management TNAU FREE agri Notes PDF DOWNLOAD ECONTENT 2021

 AGR 451 Weed and Water Management

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Lec. 1 WEEDS – DEFINITION, CLASSIFICATION

Lec 2. CHARACTERISTICS OF WEEDS, HARMFUL AND BENEFICIAL EFFECT OF WEEDS

Lect. 3. CROP WEED INTERACTIONS – CRITICAL CROP WEED COMPETITION, COMPETITIVE AND ALLELOPATHIC EFFECT OF WEEDS AND CROPS

Lect. 4 METHODS OF WEED CONTROL - PHYSICAL, CULTURAL, METHODS

Lecture - 5 Methods of Weed Control: Chemical and biological methods, Integrated Weed Management

LECTURE – 6 HERBICIDES – CLASSIFICATION, CHARACTERISTICS AND FORMULATIONS

LECTURE - 7 METHODS OF HERBICIDE APPLICATION

Lecture 8 WEED MANAGEMANT IN MAJOR FIELD CROPS RICE

LECTURE.10. ROLE OF WATER IN PLANTS - IMPORTANCE OF IRRIGATION

LECTURE 11. SOIL - PLANT -WATER RELATIONSHIP - SOILPLANTATMOSPHERIC CONTINUUM -

HYDROLOGIC CYCLE - ABSORPTION OF WATER AND EVAPOTRANSPIRATION

LECTURE 12. SOIL WATER MOVEMENT - SATURATED AND UNSATURATED FLOW AND VAPOUR 

MOVEMENT SOIL MOISTURE CONSTANTS AND THEIR IMPORTANCE IN IRRIGATION.

LECTURE 13. AVAILABLE SOIL MOISTURE - DEFINITION AND IMPORTANCE

Lecture. 14. Crop water requirement - factors affecting crop water requirement -Critical stages for Irrigation - water requirement for different field crops.

LECTURE 15. SCHEDULING OF IRRIGATION - DIFFERENT APPROACHES

LECTURE 16. Methods of irrigation - surface (flooding, beds and channels, border strip, ridges and furrows, broad bed and furrows, surge irrigation) and sub- surface methods

LECTURE 17. Micro irrigation system (drip and sprinkler irrigation) - suitability, components, layout, operation, advantage and disadvantage

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