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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 5
First page : (402) Last page : (409)
Article doi: : http://dx.doi.org/10.18782/2320-6980

Correlation Studies of Bt Cotton Growing Soils of Kurnool District in Andhra Pradesh

S. Satish¹*, K. Sreenivasulu Reddy² and K.Venkaiah³

¹Ph.D. (Soil Science), ²Professor and Head (Rtd.), ³Professor (Rtd.),
Dept. of Soil Science and Agricultural Chemistry, S.V. Agricultural College, Acharya N.G.  Ranga Agricultural University, Tirupati – 517 502, Andhra Pradesh
*Corresponding Author E-mail: satishsandakonda48@gmail.com
Received: 10.07.2018 | Revised: 8.08.2018 | Accepted: 17.08.2018  

 

 ABSTRACT

The present investigation was carried out to study the delineation of nutrient status of Bt cotton grown soils under predominant soil orders of different villages in various mandals in Kurnool district of Andhra Pradesh. Based on the status report of scarce rainfall zone, 2001 (Andhra Pradesh), the soils were identified into three predominant orders viz; Alfisols, Inceptisols and Vertisols. The soils were slightly acidic to moderately alkaline in reaction, non saline and medium to high in organic carbon. Regarding the correlation studies, in alfisols, available N was positively and significantly correlated with silt content; available Mg was negatively and significantly correlated with bulk density and EC; available Ca was positively and significantly correlated with CaCO3. However, available B was positively and significantly correlated with clay and bulk density and negatively and significantly correlated with sand content. In inceptisols, available K was negatively and significantly correlated with sand content; available Ca was positively and significantly correlated with clay content; available B was negatively and significantly correlated with EC and CaCO3 and available copper was positively and significantly correlated with pH. Whereas, in vertisols, available N was positively and significantly correlated with bulk density; available Ca was positively and significantly correlated with clay content and pH; and negatively and significantly correlated with sand content. However, vertisols did not show any correlation between micronutrients and physical and physico-chemical properties.

Key words: Bt cotton, Soil survey, Nutrients, Correlation, Alfisols, Inceptisols, Vertisols, Kurnool district.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Satish, S., Sreenivasulu Reddy, K. and Venkaiah, K., Correlation Studies of Bt Cotton Growing Soils of Kurnool District in Andhra Pradesh, Int. J. Pure App. Biosci.6(5): 402-409 (2018). doi: http://dx.doi.org/10.18782/2320-7051.6980