The document analyzes trends and patterns in the onset, offset, and duration of the monsoon season and associated agricultural seasons over time in the plateau region of Maharashtra, India using rainfall and evapotranspiration data from 1901-2008. Key findings include increasing variability in monsoon timing and duration in western and central Maharashtra compared to more stable patterns in Vidarbha. The optimal safe growing season varies between districts from around 45-70 days.
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MESO CLIMATE CHANGE AND CHANGING SAFE GROWING SEASONS OF MAHARASHTRA PLATEAU INDIA
1.
2.
Introduction
Objective
Data Base and Methodology
Study Region
Analysis :Trends and patterns of
› onset of Monsoon
› offset of Monsoon
› Preparatory season
› Growing Season
› Post harvesting Season
Conclusion
Reference
3.
The variation of climate may cause a great impact on the
productivity of agriculture crops and thereby production in
the region.
The regional variation in regional climate have direct impact
on the regional economy especially in agrarian countries like
India
In the recent year, priority is given to studies of climatic
change/fluctuation. In fact agriculture and f trend to be well
adjusted to the main climatic condition and slow little
sensitivity to moderate variation around this means
. In view of this here an intensive analysis has been made for
most important climate parameter in rain fed agriculture i.e.
rainfall and potential evapotranspiration.
4.
To analyze the trends and patterns of
change in onset and offset of Monsoon
and its effect on growing season of rain
fed crops over the plateau region of
Maharashtra.
5.
The records of precipitation and
potential evapotranspiration from year
1901-2008 has been collected from the
web site www.indiawaterportal.org.in
6. preparatory season (pre humid period).
when precipitation(p) exceeds 0.5 of
potential evapotranspiration (PET)
Onset of effective monsoon-when
precipitation exceeds potential
evapotranspiration
Growing season-from onset to offset of
monsoon -humid period
Offset of monsoon-when 0.5 exceeds
precipitation –harvesting period.
7.
Calculated Day and Duration for
› Day of Starting Pre Humid Period
› Duration of Preparatory period
› Day of Onset of effective monsoon
› Duration of humid Period
› Day of offset of effective monsoon
› Duration of Harvesting Period
› End of Harvesting Season (Post humid
Season)
8.
Calculated Deviation of
› Starting Pre Humid Period
› Preparatory period
› Onset of effective monsoon
› Growing Season
› offset of effective monsoon
› Harvesting Period
› End of Harvesting Season (Post humid
Season)
9. Methodology
…cont
The results are shown by tables, isoline
maps and graphs
The intensive study to analyze the annual
change from 1990-2008 sample location
are collected from each agro-climatic
region of Maharashtra.
19. In general western maharashtra,central
marathvada experienes +-49 to 69days
days of shifting.
Vidarbha expeerinces +-7 days of
shifting.
Khandesh experinces +-7 days of shifting.
maximam change in growing season in
assured and the drought prone area
shows some about 60 years of cycles in
general.
20. Books:•Bagchi K.,(dec 1979) Agriculture in the drought Prone Areas, Geographical Reciew of
India, vol.41,pp 293-296
•Choudhari J.L., Naidu D., Srivasta A.K., (March 1998) Cliamte Variation and their Impact on
Agriculture Productivity in Bastar District, Geographical Review Of India, Vol.58,No. 1, pp
82-89
•Diddee J., Datye V.S., Jog S.R., Kale V.S., (2002) Geography of Maharashtra, Rawat
Publication, Jaipur and New Delhi, pp 58-328
•Gaikwad S. D.,(July 2008) Analyzing Relationship of Climate and Vine Growth to
Determine the Ideal Season for Grapevine Cultivation; The Goa Geographer’s (GAG),
vol.4,pp 61-67
•Hussain M., (1994) Systematic Agriculture Geography, Anmol Publishers Pvt.Ltd., New Delhi
pp 54-94
•Ingle S.R., (2006) Safe growing Season For Goa, The Goa Geographer’s,vol.3, No.3,pp 3739
WEBSITES:http://www.icar.org.in/ciah/ciah.htm
http://www.cishlco.org
http://www.iari.res.in
http://www.mahaagri.gov.in
http://nrch.india.org