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Agronomy

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Agronomy is the science and technology used to manage plants, animals, and soils.

Research- alternative crops
Research- alternative crops

This field supports agriculture to produce food, fuel, and fiber. It also helps with chemicals, recreation, and land conservation. Professionals in this field are called agronomists. They use a combination of many different sciences. These include biology, chemistry, economics, and ecology. They also apply earth science and genetics to their work. Agronomy is essential for understanding how to use our natural resources effectively.

One major area of study is plant breeding. This involves the selective breeding of plants to create better crops. Agronomists aim to produce plants that work well in various conditions. This process has increased crop yields significantly. It has also improved the nutritional value of crops like corn, soybeans, and wheat.

Research-mapping plant genomes
Research-mapping plant genomes

A notable example is triticale. This is a hybrid grain created by crossbreeding rye and wheat. Triticale contains more usable protein than either rye or wheat alone. Plant breeding also helps develop turfgrass. These new turf-types require less fertilizer and water. They also show higher resistance to diseases.

Agronomists also utilize biotechnology to speed up plant development. Biotechnology often involves laboratory work followed by field testing. This helps scientists develop desired characteristics in new crop varieties more quickly. This technology is not just for food production. It is also used for novel industrial purposes. For instance, oilseed is commonly used for food oils like margarine. However, it can be modified to produce fatty acids. These fatty acids are used to make detergents, substitute fuels, and petrochemicals.

Soil science is another vital component of agronomy. Agronomists study ways to make soil more productive and profitable. They classify different soils and analyze them for nutrients. They look for macronutrients like nitrogen, phosphorus, and potassium. They also test for calcium, magnesium, and sulfur. Smaller amounts of micronutrients, such as zinc and boron, are also checked.

Regional laboratories test for the percentage of organic matter. They also measure soil pH and cation exchange capacity. This last term refers to the soil's nutrient holding capacity. Agronomists use these reports to recommend ways to optimize plant growth.

Soil conservation is a critical task for protecting the land. Agronomists develop methods to decrease the effects of erosion. Erosion is caused by both wind and water. One specific technique is contour plowing, which helps prevent soil loss. They also work to conserve rainfall. Agronomists seek ways to use soil to solve environmental problems. This includes managing the disposal of animal and human manure. It also involves addressing water pollution and pesticide accumulation. They work to preserve soil for future generations by preventing practices like burning paddocks.

Pasture management is another way agronomists protect the landscape. They use techniques like no-till farming to keep soil in place. On steep slopes, they may plant soil-binding grasses along contours. They might also install contour drains. These drains can reach depths of as much as 1 metre.

Research- alternative crops
Research- alternative crops

These methods help maintain the health of the land over time. By managing pastures carefully, agronomists help prevent the loss of valuable topsoil.

Agroecology is a specialized field within agronomy. It focuses on managing agricultural systems with an emphasis on ecology. This area is closely linked to sustainable agriculture and organic farming. It also involves developing alternative food systems and cropping systems. Some researchers use theoretical production ecology to study crop growth. This is a quantitative study that uses mathematical models. It treats the plant as a kind of biological factory. The plant processes light, carbon dioxide, water, and nutrients into harvestable products. Scientists track parameters like temperature, sunlight, and standing crop biomass. This helps us understand the complex systems that feed the world.

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