Agricultural Science Digest

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Agricultural Science Digest, volume 31 issue 2 (june 2011) : 150 - 152

RAINFALL ANALYSIS FOR DROUGHT INVESTIGATION IN KRISHNA ZONE OF ANDHRA PRADESH

S. Bharathi, G. Bindu Madhavi, A. Subba Rami reddy
1Acharya NG Ranga Agricultural University Regional Agricultural Research Station,Lam,Guntur-522 034, India
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Cite article:- Bharathi S., Madhavi Bindu G., reddy Rami Subba A. (2023). RAINFALL ANALYSIS FOR DROUGHT INVESTIGATION IN KRISHNA ZONE OF ANDHRA PRADESH. Agricultural Science Digest. 31(2): 150 - 152. doi: .
Daily rainfall  of Krishna zone of Andhra Pradesh for twenty five years was analyzed to investigate its behaviour on monthly basis. In the study period, four years were found to be wet, four years were found to be dry and the remaining seventeen  years were found to be normal years. Out of 25 years of study, January and February  months were found to be dry months   which normally facilitates for the good  harvest of the kharif sown long duration crops like cotton and chillies and  rabi sown crops. The normal rainfall for Krishna zone is 926.8 mm. The standard deviation for annual rainfall  for the zone was 187.9. Sixty five per cent of the total rainfall is received from South West Monsoon and twenty six per cent from North East Monsoon. Out of the 25 years of analysis,  the south west monsoon was normal in 17 years and north east  monsoon was normal in 21 years.
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