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It is a hardy plant that grows to zone 5, and in mild climates it is grown as a winter green. In warm conditions it tends to bolt to seed, [3] producing much-branched stems with clusters of flowers. The flowers have a bluish-white corolla of five fused petals, 1.5 to 2 mm (1 ⁄ 16 to 5 ⁄ 64 in) long and wide, and three stamens.
Corn grey leaf spot can be an extremely devastating disease as potential yield losses range from 5 to 40 US bushels per acre (440 to 3,480 L/ha). At higher disease levels, even greater losses can result. When a corn plant's ability to store and produce carbohydrates (glucose) in the grain is diminished, yield losses take place.
Weed identification may relate to History of plant systematics, the classification of plants; Botany, the study of plants; Taxonomy, the classification of living things; Weed plant science; Weed (disambiguation)
Veronica arvensis, common names: wall speedwell, [1]: 592 corn speedwell, common speedwell, rock speedwell, [2] field speedwell, [3] is an annual flowering plant in the plantain family Plantaginaceae. The species is native to Europe and a common weed in gardens, pastures, waste places, and cultivated land.
The Western corn rootworm, Diabrotica virgifera virgifera, is one of the most devastating corn rootworm species in North America, especially in the midwestern corn-growing areas such as Iowa. A related species, the Northern corn rootworm, D. barberi , co-inhabits in much of the range and is fairly similar in biology.
In the adult form, it eats leaves of many crops, including squash, cucumbers, soybeans, cotton, beans, and corn. Adult beetles lay eggs in the soil near a cucurbit plant. In a lifetime, females can lay between 150-400 eggs. However, there have been cases in which females have surpassed this quota, with some laying a total of 1,200 eggs. [7]
This plant may look like wildflowers, but it can cause painful rash and blistering. A video of an Iowa resident with the rash explains why. Common weed can cause painful rash
Rhopalosiphum maidis, common names corn leaf aphid and corn aphid, is an insect, and a pest of maize and other crops.It has a nearly worldwide distribution and is typically found in agricultural fields, grasslands, and forest-grassland zones.