Effect on macronutrient of Cajanus cajan root infected by increase inoculum of M. incognita

Author: Anukiran Sahu, D.K. Nayak and Sujit Kumar Behera

Download PDF

Abstract

M. incognita is the most common and economically significant species of root knot nematode parasitizing most of the crop. Due to infection of nematodes, there is change in the physiological and biochemical pathways in host which responsible for the susceptibility of host to nematode. Since work on biochemical changes in response to nematode infection in pigeon pea is limited, the present study is conductedin order to study effect of increase in inoculum level of M. incognita on macronutrients (Nitrogen, Phosphorus, Potassium) of pigeonpea root. The pot culture research was carried out in Complete randomized design (CRD) with 5 treatments i.e T1 (500 J2/plant), T2 (1000J2 / Plant), T3 (1500J2/plant), T4 (2000J2/plant), T5 (Control) and 4 varieties were UPAS-120(R), IPA-15-1 (MR), IPA 14-7(S), CO-6(HS) in Department of Nematology, OUAT, BBSR in kharif season. With increase in inoculum level there was increase in macronutrients content. Highest increase in Macronutrient nitrogen in treatment T4 then T3, T2 and then T1 over control T5and the N content increased in highest in variety CO-6 followed by IPA-14-7, IPA-15-1 and UPAS-120 varieties. Similar result found in P and K content. The results have demonstrated that nematode infestation leads to highest increased by 60.7%, 75% and 37.22% total N, P and K respectively in the roots of highly susceptible variety of Pigeon pea.

Keywords

Root knot nematode, M incognita, Pigeon pea (Cajanus cajan), Nitrogen, Phosphorus, Potassium

Conclusion

The attack of nematode on roots of pigeon pea plant has been shown to cause imbalances in the biochemical and nutrients level. The increase level of inoculum of root knot nematode cause disrupted in free flow of water and nutrients to upper part of plant due to blockage of xylem vessels. There is more accumulation of macronutrients (Nitrogen, Phosphorus, potassium) on roots of pigeon pea plant.

References

-

How to cite this article

Anukiran Sahu, D.K. Nayak and Sujit Kumar Behera (2022). Effect on Macronutrient of Cajanus cajan Root infected by increase inoculum of M. incognita. Biological Forum – An International Journal, 14(4): 475-478.