Black rot of carrots

appearance of Black rot of carrots Black rot of carrots ( Alternaria radicina ) is a seed-transferred carrot disease. The seeds are the main source of primary [...] the risk of Alternaria infection is larger under quite warm and humid conditions. Infection may take place within a few hours, with lesions occurring [...] during harvest (in potato and carrot). Post-harvest storage at 0-1 o C. A. brassicae and A. brassicicola : adjust the sowing date to avoid conditions conducive

Millet

conditions. Millets has incredibly rich composition of nutrients. Millets play a role in preventing and curing several health issues. The most commonly cultivated

Fusarium head blight or scab

General Fusarium is a group of soil-borne fungi with many different species. Fusarium is widespread and can infect a range of host crops. Many species [...] mycelium cells) or mycelium. Survival is also possible on seed, greenhouse structures, tools and machinery. Primary infection is either seed-borne or takes place [...] spores. Some also produce ascospores. In general, most Fusarium specieshave a similar life cycle. Fusarium overwinters for many years in the soil and on

Wheat bunt

on all spikelets, showing the bunt (smut spore) they contain, which is larger than a normal kernel. The bunt balls are grey-brown. They rupture at harvest [...] contaminate healthy kernels, which in turn become a source of disease in the next season. Infection is strongly correlated to temperature and precipitation [...] tritici and Tilletia laevis only differ in one gene and easily hybridize. There is debate whether they should indeed be considered separate species, since they

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Potato aphid

euphorbiae ) is of North American origin, but is these days distributed throughout the world. It is a highly polyphagous species with a preference for [...] presence in the crop. The adult potato aphid is a large, slender aphid with long, green cornicles, long legs, and a long cauda. Adults are usually green, but [...] with a dark longitudinal stripe running along the dorsal surface. In green individuals, this stripe is dark green, while in pink specimens it is dark red

Bacterial spot

General Xanthomonas vesicatoria is a bacterium that causes bacterial leaf spot on peppers and tomatoes. Damage symptoms Xanthomonas vesicatoria in tomato [...] development is favoured by temperatures between 24 and 30 °C and high precipitation due to rain, fog or overhead irrigation. Infection is through stomata [...] grow into brown spots that look like scab. These spots may be surrounded by a halo. In pepper, the spots on the leaves are also round and small to start

Green peach aphid

peach tree, is native, however it is now a pest with a world-wide distribution. The green peach aphid ( Myzus persicae subsp. persicae ) is a particularly [...] aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. When reproduction is asexual, the young [...] glossy. Winged individuals have a brown-black head and thorax and a yellow-green to green or even reddish abdomen. They have a dark brown spot on the abdomen

Blight of pepper

s containing sporangia, a type of spores) with sporangia are formed that protrude through the stomata. Secondary infection is either by germinating sporangia [...] sporangia. For germination on above-ground plant parts, leaf wetness is required. Dispersal is by wind and rain causes the pathogen to be returned to the soil [...] General Phytophthora capsici is an oomycete plant pathogen that causes blight and fruit rot of peppers and other important commercial crops. Damage symptoms

Early blight

general the risk of Alternaria infection is larger under quite warm and humid conditions. Infection may take place within a few hours, with lesions occurring [...] during harvest (in potato and carrot). Post-harvest storage at 0-1 o C. A. brassicae and A. brassicicola : adjust the sowing date to avoid conditions conducive [...] General The only known stage in all Alternaria species is the asexual stage. Conidia and mycelium overwinter in the soil and on crop residues and cause