Correlation studies of sunflower Alternaria leaf blight with weather parameters


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Correlation studies of sunflower Alternaria leaf blight with weather parameters

Authors

  • K VENKATA RAMANAMMA AICRP on Sunflower, RARS, Nandyal, ANGRAU-518502.
  • S NEELIMA AICRP on Sunflower, RARS, Nandyal, ANGRAU-518502
  • K PRABHAKAR AICRP on Sunflower, RARS, Nandyal, ANGRAU-518502.

https://doi.org/10.56739/jor.v37iSpecialissue.141310

Keywords:

Alternaria leaf blight, Correlation, Humidity, Weather parameters

Abstract

To assess the impact of weather conditions on the progress of Alternaria leaf blight in two cultivars KBHS-44
and Morden of sunflower, an experiment was conducted during kharif 2013-14 and 2014-15. It was recorded that per cent disease index (PDI) was positively correlated with relative humidity during morning (RH1), relative humidity during evening (RH2), and with crop age for two cultivars. These correlations were found to be significant under protected and unprotected conditions. PDI was negatively correlated with temperature maximum significantly and also with rainy days, sunshine hours and wind velocity. But the effect of temperature minimum was not significant.

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References

Amaresh Y S, Naragund V B, Anahosur K H, Kulkarni S and Patil B V 2003. Influence of sowing dates and weather

factors on development of Alternaria leaf blight of sunflower. Karnataka Journal of Agricultural Sciences, 16(1):68-71.

Shankergoud I, Shadakshari Y G, Parameshwarappa K G, Chandranath H T, Katti P and Mesta R K 2006. Sunflower

and Castor Research in Karnataka - An Overview, University of Agricultural Sciences, Dharwad, India. Pp 1- 41.

Suresh M, Padmavathi P, Varma N R G and Jagadeeshwar R 2013. Effect of weather and growth stage of crop on

Alternaria leaf spot development and progress in safflower (Carthamus tinctorius L.). Journal of Agrometeorology,

(Special Issue-II):135-139.

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Submitted

2023-08-23

Published

2020-03-12

How to Cite

K VENKATA RAMANAMMA, S NEELIMA, & K PRABHAKAR. (2020). Correlation studies of sunflower Alternaria leaf blight with weather parameters: Correlation studies of sunflower Alternaria leaf blight with weather parameters. Journal of Oilseeds Research, 37(Specialissue). https://doi.org/10.56739/jor.v37iSpecialissue.141310