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Many countries in Africa also undergo a depletion of fertile soil. In regions of dry climate like Sudan and the countries that make up the Sahara Desert, droughts and soil degradation is common. Cash crops such as teas, maize, and beans require a variety of nutrients in order to grow healthy.
Maize is a tall annual grass with a single stem, ranging in height from 1.2 m (4 ft) to 4 m (13 ft). [31] The long narrow leaves arise from the nodes or joints, alternately on opposite sides on the stalk. [31] Maize is monoecious, with separate male and female flowers on the same plant. [31]
The protein from maize is further enhanced by protein contributions from beans and pumpkin seeds, while pumpkin flesh provides large amounts of vitamin A; with the Three Sisters, farmers harvest about the same amount of energy as from maize monoculture, but get more protein yield from the inter-planted bean and pumpkin. Mt.
Cereals that became modern barley and wheat were domesticated some 8,000 years ago in the Fertile Crescent. [5] Millets and rice were domesticated in East Asia, while sorghum and other millets were domesticated in sub-Saharan West Africa, primarily as feed for livestock. [6] Maize arose from a single domestication in Mesoamerica about 9,000 ...
The output of wild maize did not justify the time and work needed to grow the crop. However, maize could be both dried and stored which was very important to early Mesoamericans as it could be used on a year-round basis. Drying meant that it could be transported as well. The common bean (Phaseolus vulgaris) was often grown with maize. These two ...
As a result, its land contains fertile alluvial soil and groundwater resources. This makes the agriculture of Bihar rich and diverse. Rice, wheat, and maize are the major cereal crops. Arhar, urad, moong, gram, pea, lentils, and khesaria are some of the pulses cultivated in Bihar.
The earliest dated maize cobs was discovered in Guilá Naquitz cave in Oaxaca and dates back to 4300 BC. Maize arose through domestication of teosinte, which is considered to be the ancestor of maize. Maize can be stored for lengthy periods of time, it can be ground into flour, and it easily provides surplus for future use.
In addition, monocropping encourages pesticide resistance and pest evolution [4] and so rotating crops performs an important role in preventing pathogen and pest build-up. There are however a few diseases which are less severe in a monocropping system, like take-all in wheat, as the population of an organism which feeds on the disease causing ...