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 Academic Research Journal of Agricultural Science and Research
 

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Academic Research Journal of Agricultural Science and Research 

Vol. 4(1), pp. 31-34. January, 2016.

ISSN: 2360-7874 

 DOI: 10.14662/ARJASR2015.066

 

Full Length Research

Effect of late blight of potato incited by Phytophthorainfestans (Mont.) de Baryon nitrogen contents of potato leaves

 

Muhammad Nasir Subhani1*, ShahbazTalib Sahi2, Abdul Rehman2 and Waqas Wakil3

 

1Institute of Agricultural Sciences, University of the Punjab, Lahore, Pakistan

2Department of Plant Pathology, University of Agriculture, Faisalabad, Pakistan

3Department of Agri. Entomology, University of Agriculture, Faisalabad, Pakistan

 

*For Correspondence: nasirsubhani@hotmail.comnasirsubhani.iags@pu.edu.pk

 

Accepted 29 October 2015

Abstract

 

Minerals are the crucial part of plant nutrition and their presence in excess or deficiencies may cause certain maladies in the plants either through disturbing metabolism or plant physiology abnormally by favoring the plant pathogens or discouraging the plant growth. Nitrogen availability was the most important limiting factor for yield. Nitrogen content of 50 potato genotypes including 8 cultivars and 42 lines were tested from three samples taken at different times, first from healthy plants after 50 days of crop planting before disease appearance, second from healthy and diseased plant separately 30 days after the first appearance of the late blight symptoms on the plants. Results of present study revealed that there was an overall increase in the quantity of nitrogen in all tested lines after disease appearance. This increase was ranged from 1.0 to 10.7 percent over the healthy plants of that same age group. Maximum increase of 10.7 percent in FD 3-10 in nitrogen content after disease appearance was observed, while minimum 1.0 percent increase in nitrogen content was observed in line N 22. Increase in nitrogen content was also observed in the healthy plants of all potato lines/cultivars which were not infected by the disease but this increase might be due to aging factor and was quit insignificant and unnoticeable. All though the nitrogen content was slightly increased in the plants which were not diseased than that of healthy plants which were tested at the time when disease was not appeared. It is apparent from the above figures that the increase in nitrogen content was more pronounced due to the effect of disease and there was no or very slight effect of aging was observed. Pathogen attack has significantly increased percent nitrogen in the potato lines/cultivars under observation.

Key Words: Potato, late blight, resistance, nitrogen, mineral content, disease severity

 

How to cite this article: Subhani NM, Sahi S, Rehman A, Wakil W (2016). Effect of late blight of potato incited by Phytophthorainfestans (Mont.) de Baryon nitrogen contents of potato leaves. Acad. Res. J. Agri. Sci. Res. 4(1): 31-34.

 

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