Abstract
In Pakistan, powdery mildew of pea is an emerging pathogen to notable production of
pea. The research was conducted to evaluate the currently available resistant source
against the powdery mildew (Erysiphe pisi) and its management through nutrients
(micronutrients and macronutrients) and plant activators (citric acid, benzoic acid,
salicylic acid, K2HPO4, KH2PO4). Thirteen varieties/lines were grown under a
randomized complete block design (RCBD). The data of disease incidence were
examined at weekly intervals to evaluate the resistant source against this disease.
Varieties/lines including No. 267, F-16, and Peas-2009 exhibited a resistant response
to E. pisi with a disease incidence of 3.3, 6.6, and 1.6% respectively. The winner
showed moderately resistant response with disease incidence 23.46%. Green grass
(45.05%), VIP (37.7%), Peas meto (29.50%), Aleena (30.63%) and Azad (36.00%)
were moderately susceptible. The Varieties PF-450 (65.00%), and Sprinter (61.70%)
showed susceptible response. The Varieties Climax (74.00%) and Meteor (73.53%)
were highly susceptible to powdery mildew. The macronutrients proved to be the highly
effective with lowest disease incidence as 8.14%. Salicylic acid was the most effective
plant activator followed by K2HPO4 that exhibited the minimum diseases incidence
16.38% and 22.62% respectively. Our findings concluded that the variety Peas-2009
was highly resistant against the powdery mildew. Macronutrients and salicylic acid
(SA) were highly potent nutrient and plant activator in minimizing the development of
this radical fungal pathogen.
Amna Ikram, Hafiz Muhammad Usman Aslam, Muhammad Atiq, Luqman Amrao, Safdar Ali, Khalid Naveed, Nasir Ahmad Khan. (2020) Screening of resistant germplasm against powdery mildew of pea and its management through nutrients and plant activators, Asian Journal of Agriculture and Biology, Volume 8, Issue 1.
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