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66 Zoekresultaten voor tag: Vegetables |
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Managing the root zone in soilless culture | English | Eyal Ronen
Soilless culture is a cultivation technique in which plants are grown detached from the soil. Plants are cultivated in containers filled with several possible growing media. The limited volume of medium and water availability generally causes rapid changes in the status of water and nutrients surrounding the plant roots. therefore, changes in the electrical conductivity (EC), pH, and nutrients level should be continually monitored for ensuring efficient use of water and nutrients by the growing plants.
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Irrigation management with saline water | English | Dana O. Porter and Thomas Marek
One of the most common water quality concerns for irrigated agriculture is salinity. All major irrigation water sources contain dissolved salts. These salts include a variety of natural occurring dissolved minerals, which can vary with location, time, and water source. Many of these mineral salts are micronutrients, having beneficial effects. However, excessive total salt concentration or excessive levels of some potentially toxic elements can have detrimental effects on plant health and/or soil conditions.
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Salinity | English | Eyal Ronen
Soil salinity is an increasing threat for agriculture and is a major factor in reducing plant productivity; therefore, it is necessary to better understand the reasons for its development and how to obtain sufficient control over the phenomenon. Salinity can be the result of both natural occurrence and human behavior. Salinity problems occur in non-irrigated lands as a result of water losses through evaporation, transpiration, possibly salt input through rain, and seawater drift. Additionally, salinity can develop due to careless usage of several fertilizers, irrigation with saline water, or over-irrigation that causes capillary movement of hidden salts from lower layers in the soil, however, a much more extensive problem in agriculture is the accumulation of salts from irrigation water.
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