Scientists contribution and Importance of crop physiology in agriculture and horticulture

1. LECTURE-1
Introduction – definition of Crop
Physiology – Importance in
agriculture and horticulture

2. Crop physiology
“The science concerned with processes and
functions, the response of plants to changes in
environment and the growth and development
that results from responses (Noggle and fritz,
1983).
“Physiology is the study of functional aspects of
crop plants.”

3. Aim:
1. “To gain a complete and thorough
knowledge of all the phenomena occurring
in plants”.
2. “To analyse complex life processes, so as to
interpret them in terms of simpler one and
reduce them finally to the principles of
physics and chemistry” .

4. Joseph priestly
Ingen housz

5. Theodore De Saussure
Jean-Baptiste Boussingault

6. Julius Von Sachs

7. 1915 W.L. Balls &
Holton
: Term ‘Crop physiology’ came into existence.
1924 V.H Blackman,
F.G. Gregory,
G.E. Briggs
: Methods of growth and yield analysis. Explained
“ The physiology of crop field”
1947 D.J. Watson : Concept of LAI was proposed.
1950 : Infra Red Gas Analyser ( IRGA ) was discovered.
1953 Monsi & Saeki : Light interception by crop canopy.
1963 Hesketh &
Moss
: Photosynthesis in maize & sugarcane leaves.

8. IMPORTANCE OF CROP PHYSIOLOGY IN
AGRICULTURE & HORTICULTURE:
1. Seed physiology
2. Dry matter production
3. Partitioning of dry matter (HI)
4. Herbicide physiology
5. Nutriophysiology
6. Photoperiodism
7. Plant Growth Regulators
8. Abiotic stresses
9. Post Harvest Physiology

9. What are the areas in which Plant
Physiology can be used in realizing goals
of a Sustainable Green Agriculture?
1. Integrated Nutrient Management
2. Plant Growth Regulators
3. Breeding for drought, high temperature and
salt tolerance
4. Tissue culture
5. Transgenic Plants

10. All can say – How to grow a plant ?
Plant Physiologist – How plant is growing ?