Abstract
Sphaerotheca fuliginea is the most commonly recorded fungus that cause powdery
mildew of cucurbits. The outbreak of this disease occurred in Pakistan in Neelam
valley. Current study was conducted to minimize significant economic losses by using
different combinations of fungicides and nutritional amendments. Fungicides Bravo
(Chlorothalonil) and Score (Difenoconazol) and nutrient solutions of Agsil
(Potassium silicate) and Peak (mono potassium phosphate) were applied alone and in
combination to manage the disease. Bravo and Score were applied @ 1.5ml/L and
2.5ml/, respectively while 0.1% solutions of both Agsila and Peak was used.
Nutritional amendments were used before the onset of disease and fungicides were
applied after the appearance of disease. All the treatments were randomized in three
replications. The findings described the combination of fungicides was most efficient
in decreasing disease incidence as it reduced the powdery mildew incidence upto
60%. In individual fungicidal applications, Bravo treated plants showed less disease
incidence (36%) than Score (40%). However to avoid from the environmental hazards
nutritional amendments is the safest option which gave 50% reduction in disease
incidence. Agsil was more effective than Peak in individual applications and it
showed 47% disease incidence that was 49% in case of Peak.
Maryam Yousaf, Romana Anjum, Nadeem Ahmed, Muhammad Ahmad Zeshan, Safdar Ali, Muhammad Usman Ghani. (2020) Evaluation of fungicides and nutritional amendments against powdery mildew of pumpkin, Asian Journal of Agriculture and Biology, Volume 8, Issue 1.
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