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ISSN: 2360-7874 |
Academic Research Journal of
Agricultural Science and Research |
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Vol. 8(3), pp. 164-173, April 2020 Research Evaluation of lime requirement estimation methods for acid soil management and yield of bread wheat (Triticum aestivum L.) in Wadla District of North Wollo Zone of the Amhara Region
Abebe Getu1*, Samuel Adissie2, Tilahun Taye3 and Tadesse Hailu4
1, 2, 3 &4 Sirinka Agricultural Research Centre, P.O.Box 74, Woldia *Corresponding author: Abebe Getu Asfaw. Email: abegetu3@gmail.com
Accepted 30 April 2020
A field study was conducted to determine the LR by using different methods and investigate wheat response to lime and phosphorus fertilizer. Shoemaker-McLean-Pratt (SMP) buffer, Ca(OH)2 titration, permissible acid saturation percentage and exchangeable acidity LR testing methods were evaluated with factorial combination of P; 0, 34.5 and 69 kg P2O5 ha-1, arranged in a randomized complete block design with three replications. The result showed that there was significant (p<0.05) yield response to the main effect of liming at the testing site where the soil pH was 5.14. While, there was no significant yield response to liming at those testing sites where the soil pH varied from 5.25 to 5.60. The highest grain yield of 3.61 t ha-1 was obtained from lime treated with Ca(OH)2 titration method statistically at par with the grain yield of 3.58 t ha-1 from lime treated with SMP buffer method. Similarly, the yield of wheat was significantly affected by the main effect of application of P at two testing sites. The highest grain yields of 3.66 statistically at par with the grain yield of 3.49 t ha-1 were obtained from application of 46 and 23 kg P2O5 ha-1, respectively. SMP method estimated lime raised the soil pH from 5.8 to 6.5, 6.2 to 6.9 and 5.8 to 6.2, while Ca(OH)2 titration method estimated lime raised soil pH from 5.8 to 6.3, 6.2 to 6.7 and 5.8 to 6.1. However, the LR estimated with Ca(OH)2 titration method was lower from the LR estimated with SMP method by an average of 37.6%, which indicates SMP buffer method overestimated LR in the present study area, while the PASP and exchangeable acidity methods were found to underestimate the LR. Thus, Ca(OH)2 titration method can be recommended as the most accurate LR estimation method among the methods evaluated in this study.
Key words: liming, lime requirement, soil acidity, wheat
How to cite this article (APA Style): Abebe G., Samuel A., Tilahun T., Tadesse H (2020). Evaluation of lime requirement estimation methods for acid soil management and yield of bread wheat (Triticum aestivum L.) in Wadla District of North Wollo Zone of the Amhara Region. Acad. Res. J. Agri. Sci. Res. 8(3): 164-173
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