Bud rot: Bud rot is characterized by initial yellowing of spindle leaf, rotting of growing bud (Fig.2) which can be drawn out easily with a gentle pull, followed by infection in surrounding leaves. As the disease advances, adjacent leaves also showing yellowing, drooping and finally falling off completely by. leaving the bare stem.

2022年10月28日 · Pathogens that attack areca nut commodities can be in the form of bacteria and fungi. Leaf midrib rot is caused by the mycelia of the pathogenic fungus Athelia rolfsii, in addition to infection with Penicillium sp. during plant growth also results in losses.

Yellow Leaf spot, and Yellow Disease, which affect areca trees frequently and are brought on by constant rainfall and climatic changes, must be controlled in the early stages of infection in order to avoid difficult control in the later stages and potential loss to the

The symptoms of the disease are yellowing of leaves and shedding of both mature and immature fruiis. The yellowing starts from the tips of the leaflets of the outer leaves gradually extending to the middle of the laminae (Fig. 1.1). The affected leaves often develop necrosis from their tips.

Leaf spot in Arecanut Plants. Small yellow specks appear on the leaf lamina, which later enlarge to form irregular sunken lesions with dark brown margins and a light brown center having minute dot like structures. A characteristic, prominent yellow halo around the …

The leaf lets in outer whorls become yellow and spreads to the whole leaf and the leaves droop down covering the stem. Later, the inner whorl leaves also become yellow. Subsequently all the leaves droop, dry up and fall off, leaving the stem alone. When infected trunk is cut open brown discoloration can be seen up to one metre from ground level.

2021年5月31日 · Phytophthora diseases are serious and often fatal in arecanut causing huge losses to farmers (50–100%) if timely and proper management measures aren’t adopted. Among Phytophthora...

Pathogens that attack areca nut commodities can be in the form of bacteria and fungi. Leaf midrib rot is caused by the mycelia of the pathogenic fungus Athelia rolfsii, in addition to infection with Penicillium sp. during plant growth also results in losses.

2024年6月8日 · Leaf drooping signals health issues; identify the cause for proper care. Bright, indirect light and consistent moisture are key to preventing droop. Monitor and adjust care to maintain Areca Palm health and prevent leaf fall. Leaf drooping in Areca Palms is more than just an aesthetic issue; it's a cry for help.

2018年11月3日 · Leaf spot of areca nut caused by fungi Colletotrichum gloeosporiodes and Phyllosticta arecae attacks the crop even at the seedling stage. Established areca trees suffer due to this disease and cause yield loss up to 60 percent. Leaf spot is a very serious problem in all over the areca nut growing regions of India.