Madras Agricultural Journal
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Research Article | Open Access | Peer Review

EFFECT OF PREMONSOON DRYSEEDING EMPLOYING RAINFALL PREDICTION IN VERTISOLS OF ARUPPUKKOTTAI TALUK

Volume : 85
Issue: Feb-feb
Pages: 93 - 96
Published: July 01, 2023
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Abstract


Thirty one years of rainfall data of Aruppukottai in Virudhunagar district were analysed for variability indicated the "Uni" model distribution pattern. Weekly rainfall prediction were made for dry seeding on vertisols. Thrity seventh STD week (Sep 10-16) had the probability of 73 per cent for 20 mm rainfall. The probability for 10 mm of rainfall in the subsequent weeks remained more than 60 per cent. Dry seeding possibility in sorghum and cotton during 35 and 36th week has been indicated. A model with minimum assured rainfall at 50 per cent probability in conjunciton with moisture availability index was developed and validated through on-farm trials in the farmers holdings. The yield increase in sorghum was 36 per cent over the monsoon crops. This technique was useful for other vertisol areas with uni model rainfall pattern with primary peak in the month of October.

DOI
Pages
93 - 96
Creative Commons
Copyright
© The Author(s), 2025. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

Keywords


Rainfall prediction dry seeding vertisols
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