వరి పైరును నష్టపరుస్తున్న ఆకుముడత, కంకినల్లి - నివారణ చర్యలు||Paddy Pest Control || Karshaka Mitra

Control of Paddy Leaf Folder and Panicle Mite
Leaf folder caterpillars fold a rice leaf around themselves and attach the leaf margins together with silk strands.
They feed inside the folded leaf creating longitudinal white and transparent streaks on the blade.

Why and where it occurs
Heavy use of fertilizer encourages the rapid multiplication of the insect. High humidity and shady areas of the field, as well as the presence of grassy weeds from rice fields and surrounding borders, favor the development of the pest.
Expanded rice areas with irrigation systems, multiple rice cropping and insecticide induced resurgences are important factors in the insect’s abundance.
Rice leaf folder occur in all rice environments and are more abundant during the rainy seasons. They are commonly found in shady areas and areas where rice is heavily fertilized. In tropical rice areas, they are active year-round, whereas in temperate countries they are active from May to October. The adults are nocturnal and during the day, they stay under shade to escape predation. Moths fly short distances when disturbed.

Rice Panicle Mite
The panicle rice mite injures rice plants both directly by feeding on cells of rice leaves, stems, and kernels and indirectly by vectoring and/or facilitating the establishment of pathogens. Feeding damage can result in a sterile grain syndrome, which is described as a loose and brownish flag leaf sheath, a twisted panicle neck, impaired grain development with empty or partially filled grains with brown spots, and panicles standing erect. Malformed grains sometimes show a curved appearance, often referred to as “parrot-beak.” Damage to the leaf sheath reduces the photosynthetic potential of the plant and can have a negative effect on fertility. The heaviest and most economically damaging populations of panicle rice mite are often reported during the second or ratoon crop.
వరి పైరును నష్టపరుస్తున్న ఆకుముడత పురుగు, కంకినల్లి - నివారణ
తెలుగు రాష్ట్రాల్లో చిరుపొట్టదశ నుండి కంకి పాలుపోసుకునే దశలో వున్న వరి పైరులో ప్రస్థుతం వాతావరణ ప్రతికూలతల మధ్య చీడపీడల వ్యాప్తి అధికంగా కనిపిస్తోంది. కొన్ని ప్రాంతాల్లో ప్రధానంగా ఆకుముడత, కంకినల్లి పురుగుల ఉధృతి వల్ల తీవ్ర నష్టం వాటిల్లుతోంది. వీటి లక్షణాలు, నివారణకు సత్వరమే చేపట్టాల్సిన సస్యరక్షణ చర్యల గురించి ఈ స్టోరీలో తెలుసుకుందాం.

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