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Vol. 12, Issue 3 (2023)

Application of spectroradiometer SVC HR-1024i infrastructure in the study of downy mildew of bitter gourd caused by Pseudoperonospora cubensis (Berkeley & Curtis) Rostovtsev

Author(s):
Asalkar UA, Gorantiwar SD and Bhalekar MN
Abstract:
Within the genus Pseudoperonospora (Peronosporaceae), the most popular and economically important species are Pseudoperonospora cubensis, Rostovzev, which causes downy mildew disease in bitter gourd. Seven types fungicidal treatments were applied during this research trial on bitter gourd such as 1) Absolute control (water spray), 2) Metalaxyl 4% + Mancozeb 64% WP @ 2 g/lit, 3) GI Chitosan @ 1 ml/lit, 4) Potassium salt of active phosphorus @ 4 g/lit, 5) T2 and T3 alternatively, 6) T2 and T4 alternatively and 7) T2, T3, and T4 alternatively. Spectroradiometer was placed in Hyspec laboratory CAAST-CSAWM MPKV Rahuri. Treatment wise healthy and downy mildew diseased leaf samples were collected and brought into the Hyspec laboratory for further investigation. Spectroradiometer has given the spectral signature of each treatment having wavelength 350nm to 2500nm. The data obtained by this technique was analyzed in the software SVC HR-1024i which indicates the NDVI (normal difference vegetation index) values. Overall present research showed the highest NDVI mean values were obtained in treatment 7) T2, T3, and T4 alternatively i.e (Metalaxyl 4% + Mancozeb 64% WP, GI Chitosan @ 1 ml/lit and Potassium salt of active phosphorus @ 4 g/lit alternatively) followed by T4 (Potassium salt of active phosphorus @ 4 g/lit), T6 (T2 and T4 alternatively, T5 (T2 and T3 alternatively), T2 (Metalaxyl 4% + Mancozeb 64% WP @ 2 g/lit), T3 (GI Chitosan @ 1 ml/lit. The minimum NDVI mean was noticed under treatment T1 (absolute control: water spray). All attempted disease management treatments (T2 to T6) were significantly superior over T1 (absolute control: water spray).
Pages: 5901-5907  |  224 Views  151 Downloads


The Pharma Innovation Journal
How to cite this article:
Asalkar UA, Gorantiwar SD, Bhalekar MN. Application of spectroradiometer SVC HR-1024i infrastructure in the study of downy mildew of bitter gourd caused by Pseudoperonospora cubensis (Berkeley & Curtis) Rostovtsev. Pharma Innovation 2023;12(3):5901-5907.

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