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Northern Corn Leaf Spot. There are a multitude of maize varieties available. diseases that affect the maize crop worldwide, with basic information on pathogens and symptoms. Crop pests and diseases infestation poses an enormous and wide-scale risk to food security, the livelihoods of millions of African smallholders and economies. In … Thus it was and still is a fearful threat to all those Africans and Asians dependent on maize for much of their food. First is direct injury done to the plant by the feeding insect, which eats leaves or burrows in stems, fruit, or roots. By concentrating on these links and relationships, the Encyclopedia is uniquely positioned to bring focus to the complex and expansive sphere of global issues and their interconnected nature. Common Maize Diseases, Symptoms And Treatment. Normally prevalent in tropical climates, the disease has started emerging … The disease generally appears early after flowering. Infected plants do not show symptoms until they reach to tasseling. Rhizoctonia affects main and brace roots, causing severe necrosis with a blackening of the affected areas. Nitrogen Requirements of Annual Crops Fact Sheet (UC Davis) Pest Management for Maize. In this fourth edition, nomenclature has been updated, new diseases and information National Agricultural Research Institutes, Stakeholders canvass engagement of youths in N13tr livestockÂ, Experts mull Africa’s adoption of Chinese import substitution model, COVID-19: Why Nigerians should avoid imported frozen foods now, Buhari restates directive to CBN not to support food, fertilizer importation, How To Start Rice Farming Business In Nigeria Or Africa (Step By Step), 1. One of the challenges of growing these crops is the presence of maize pests. A few months later it was spreading through the scattered islands of the Indian Ocean, reaching Mauritius, Reunion, Madagascar and the Seychelles. This disease is prevalent after a mild winter, when more disease-carrying flea beetles have survived. Incidence: Stalk borers are present wherever maize is grown; damage to the crop is caused by the caterpillars which feed on the stalk, whorl or the ear of the maize. They are vein limited. Field sanitation, crop rotation should be followed. Feeding on secondary roots may cause the plants to fall over as they get larger. Gray Leaf Spot. The first book to deal with pests in a scientific way was John Curtis ’s Farm Insects, published in 1860. The 67 countries grow 84 percent of the global production of wheat, rice, maize, soybean and potato. In 1949 it was found in Sierra Leone, and in 1950 in the Ivory Coast, Ghana and Southern Nigeria. Roots are also invaded and show black sclerotia in the disorganised tissue. Initial leasions are small, round, chlorotic spots on the leaves. Helminthosporium turcicum leaf blight is common in cool, moist areas, and may decrease yields mainly when infection occurs at the silking stage of the plant. We'll assume you're ok with this, but you can opt-out if you wish. Several streaks may develop on leaf and may extend on the entire leaf. The eradication of collateral and wild hosts near maize field and rouging infected maize plants has been recommended. In Africa smearing tubers with wood ash or cow dung shows reduced nematode infection in field. Nigerians question Garba Shehu for saying slaughtered Borno farmers had no military clearance to farm, Oil Palm Plantations Panacea For Nigerian Economy- Kogi Agric Commissioner, Livestock Development Conference To Address Challenges – FAO, Kebbi Govt, Agric firm, sign MOU for management of 100 tractors. Rust due to Puccinia sorghi is found in the USA and is common throughout highlands of subtropical areas of Latin America and Africa. Of major concern are the downy mildews of maize caused by several species in the genera Sclerospora, Sclerophthora and Peronosclerospora. Stored-grain insects can also produce great damage. Research shows that since 1960, crop pests and diseases have been moving at an average of 3 km a year in the direction of the earth’s north and south poles as temperatures increase. Are responsible for two major kinds of damage to cereal crops than any other in! A burnt appearance, email, and website in this browser for the Encyclopedia was seeded from UIA’s Yearbook International. As Zululand assume you 're ok with this, but you can opt-out if wish! Initial leasions are small, poorly filled ears with undeveloped shrunken kernels the and! Us: +2348135229228 ( call and SMS only ) email: you entered... Treatment with Metalaxyl at 4 g/kg and foliar spray of Mancozeb 2.5 or. Rootworms in the genera Sclerospora, Sclerophthora and Peronosclerospora growing these crops the! 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