author(s)
Madhu MR, Verma KK and Vinod Kumar

abstract
Guava is an important fruit crop and is cultivated in large areas of Haryana. A lot of guava orchards are wilting up, so an intensive survey was conducted in four districts of western Haryana for the guava decline incidence. The survey results revealed the prevalence of Meloidogyne incognita, M.javanica, Rotylenchulus reniformis, Helicotylenchus spp., Hoplolaimus spp. and Pratylenchus spp. In its addition, fungi associated in the orchards of guava decline symptoms were Fusarium oxysporum, Macrophomina phaseoli and Rhizoctonia solani. The frequency of occurrence of M. incognita was 72.2% in Fatehabad, 63.2% in Hisar, 56.3% in Jind and 53.3% in Sirsa district respectively. Guava decline incidence was maximum in Jind (51.6%) followed by Sirsa (49.4%), Hisar (40.4%) and least disease was observed in Fatehabad district (36.6%). It is evident from the survey results, that the presence of M. incognita and F. oxysporum and their interaction is predominant reason for disease incidence and the main cause of guava decline.