This document provides an overview of the lecture topic "Meaning and Scope of Agronomy" for the course Principles of Agronomy and Agricultural Meteorology. It defines agronomy as the branch of agriculture dealing with soil, water, and crop management. The scope of agronomy includes yield maximization, reduced production costs, better water use efficiency, appropriate soil fertility management, and intensive cropping patterns for sustainable food production. It also discusses agro-climatic zones which are classifications based on topography, temperature, rainfall, and cropping patterns. Two examples of zones mentioned are the Western Himalayan Zone and Eastern Himalayan Zone.

1. Career Point Cares
Principles of Agronomy and Agricultural
Meteorology
(AGL102)
Mr. Rohitashv Nagar
Assistant Professor & HOD
Department of Agronomy
School of Agricultural Sciences
Career Point University, Kota (Raj.)

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Lecture-1
Meaning and Scope of Agronomy

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Agronomy is a branch of agricultural sciences which deals with
principles and practices of soil, water and crop management.
This term is derived from Greek words agros meaning ‘ field’ and
nomos meaning ‘ to manage ‘.

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The term agriculture is derived from the Latin words ‘ ager or agri
meaning ‘soil’ and culture meaning ‘ cultivation’.
Agriculture is a very broad term encompassing all aspects of crop
production, livestock farming, fisheries, forestry etc.

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Scope of Agronomy
1. Yield maximization with introduction of new cultivars.
2. Reduced cost of production due to proper crop management.
3. Better water use efficiency due to agronomic knowledge.
4. Special tillage and intercultural operations for better crop growth
and maximizing harvesting index.
5. Appropriate soil fertility management can increase crop yield with
lesser use of fertilizer for increased profit.

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6. Reduced post harvest loss due to agronomic knowledge and
practices.
7. Intensive cropping patterns and integrated farming systems for
sustainable agricultural growth and increased food production per unit
area.

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Agro Climatic Zone: Classified based on Topography,
Temperature, RF and Cropping Pattern.
 According to planning commission – 15 (INDIA)
 According to planning commission – 10 (RAJASTHAN)
 According to NARP of ICAR - 127

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1. Western Himalayan Zone: Zone includes HP, UP hills, 3 sub-
zones of J&K. soil of cold region including hilly brown soil. It
is composed of undulating , steep slopes, prone to erosion.
2. Eastern Himalayan Zone: Arunachal, Nagaland, Manipur,
Tripura, Mizoram, Assam, Jalpaiguri and Coochbihar District
of West Bengal. High rainfall and forest cover. Mostly alluvial
soils are found. Shifting cultivation is practiced. Zone is prone
to floods.

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