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nematode disease of maize

Effect of disease in maize. Bhargava S; Yadav BS, 1978. Indian Journal of Mycology and Plant Pathology, 8(1):72. There are about 72 maize diseases reported in Ethiopia caused by fungi, bacteria, nematode and viruses [6.7]. However, diseases such as turcicum leaf blight (TLB), common leaf rust(CLR), gray leaf spot (GLS) are still important constraints in all maize growing regions in Ethiopia that cover 80-95% of maize leaf diseases. Diseases interfere with normal plant growth and lower grain quality. Nematodes are often overlooked as a pest in corn due to their small size and non-distinctive damage symptoms but they can cause significant yield loss by damaging corn roots. The crops in the crop rotations viz., chilli-amaranthus-maize-radish-cauliflower in the first year and amaranthus-maize-cabbage-chilli in the second year were investigated from December 2011 to April 2014.Soil samples were collected monthly based on crop available in the study area. diseases. Diseases in maize are caused by fungi, bacteria, viruses and nematodes. Follow crop rotation with non host or antagonist crops like ground nut, sorghum, maize… 7) that is known to be a destructive pest of citrus crops, pepper and, most importantly, banana, on which it causes toppling disease. maize. The major diseases are: four foliar diseases, two pre‐flowering and three post‐flowering stalk rots, four downy mildews and two sheath diseases. Radopholus similis is a migratory endoparasitic nematode (Fig. Thus, growers who have a root-knot nematode problem may find it difficult to control the nematode and its damage through crop rotation, although this is sometimes a viable option. Maize diseases can reduce yield. Maize is the most important cereal crop grown in South Africa, followed by wheat and grain sorghum. Because disease caused by nematodes can't be diagnosed based solely on plant symptoms, it is necessary to collect samples and submit them to a laboratory for nematode analysis. Find out about nematode biology, crop damage symptoms, management and control. Most root-knot nematodes have a very wide host range. The occurrence of "toppling disease" in maize in Baden-Wurttemberg, Germany, caused by Ditylenchus dipsaci is described. Of the 61 diseases of maize recorded so far, 15 and one nematode problem, are considered to constitute the major constraints limiting production. In Africa smearing tubers with wood ash or cow dung shows reduced nematode infection in field. Host range study and evaluation of certain barley varieties to the maize cyst nematode Heterodera zeae. Yields of grain crops usually vary considerably between years, mainly due to highly variable rainfall. Bhargava S; Yadav BS, 1979. Soil sampling and nematode identification. Nematodes can be a source of extensive damage to maize. The corn cyst nematode (CCN) Heterodera zeae is a plant parasitic nematode that feeds on corn Zea mays. Treating tubers with hot water for 40 min at 50-55 C before sowing and after harvest to reduce disease both in field and storage. Host range study and evaluation of certain barley varieties to the maize cyst nematode: Heterodera zeae. The CCN has a limited economic impact worldwide due to its high soil temperature requirements. Over 120 nematode species parasitize maize … Examination of roots showed that the severity of disease was related to the level of D. dipsaci infestation. Common diseases that affect maize include maize smut, maize streak virus disease, grey leaf spot and maize lethal necrosis. Most nematologists agree that it is important to estimate the population densities of nematodes both in the soil and inside root tissue when conducting a nematode analysis. The nematodes cause losses to the yield by direct feeding on roots besides this, they interact in roots with other disease causing agents and thus cause losses to yield qualitatively and quantitatively. 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