Groundnut leaf spot photos
See photos of groundnut leaf spot photos. All are high definition images. These HD photos are free for non-commercial use. Give credit using https://www.harishmanik.com/
See also: Malabar spinach photos
(1). Groundnut leaf spot diseases
Image 01: Groundnut tikka disease photo
Image 02: Groundnut alternaria blight
Image 03: Groundnut nut late blight
Image 05: Severe form of alternaria blight
Image 06: Initial stage of alternaria blight
Image 08: Brown colour spots
Image 11: Healthy leaves
Image 12: Healthy leaves
(2). Types of G. L. S.
There are four types:
(2.1). Early L. S.
- Cercospora arachidicola
- It appears just one month after the sowing of seeds.
Identification of spots:
- Early spots are chlorotic, later the spots turn in brown and large.
Upper surface of the leaves:
- Presence of sub circular shapes.
Lower surface of the leaves:
- Presence of light brown colouration.
Lesions: These are common in petioles, stems, stipules.
Management: Use carbendazim of mancozeb.
(2.2). Late L. S.
Cause: Phaeoisariopsis personatum
- Kharif crop: 2 months after sowing.
- Rabi crop: more than one month after sowing.
- Small, black circular sopts develops in the lower surface.
- Use carbendazim or mancozeb.
(2.3). Alternaria L. S.
Cause: Alternaria arachidis and A. tenuissima
- One month after sowing.
- Development of brown and irregular lession which is surrounded by yellow hollow.
- Blighting of apical portion of leaves.
- Small rough brown spots.
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