Tag: soil : our life

• Irrigation is the application of controlled amounts of water to plants at needed intervals. 
  
• Prolonged liberal irrigation of agricultural fields is likely to create a problem of salinity, loss of nutrients from the soil. as more amount of water enters through the xylem vessels of the plants the soil becomes waterlogged, vegetations and crop die due to insufficient supply of oxygen.
• Hence Prolonged liberal irrigation of agricultural fields is likely to create a problem of salinity.
• So, the correct answer is 'Salinity'.

Forest Biomes represent the largest and most ecologically complex systems.  They contain a wide assortment of trees, plants, mammals, reptiles, amphibians, invertebrates, insects and micro-organisms which vary depending on the zone's climates.  Sadly, boreal and rainforest biomes are being cut down at an alarming rate, with hundreds of species of plants and animals disappearing from the planet on a daily basis. In forests temperature is generally lower in summer and higher in winter. The days are cooler and nights are warmer than in the surroundings. The floor of the forest is carpeted with lichens and mosses. Moisture content of the soil remains stable for longer periods because of absence of evaporation.

Explanation: Water content or moisture content is the quantity of water contained in a material, such as soil (called soil moisture), rock, ceramics, fruit, or wood. The water content of soil is defined as the ratio of weight of water to weight of solids of given mass of soil.

Explanation: Clay can have a very high porosity. Because its grains are very small, there are a lot of (small) pore spaces in between them. What clay does not have is good permeability, which is a measure of how "connected" these pore spaces are. Clay can hold a lot of water, but it doesn't let it flow very well.

The process of turning and loosening of soil is called ploughing or tilling. Harvesting is the process of cutting the crop and gathering them to transport it to the market. Threshing is the process of separating the chaff from the grain. Irrigation is the process of watering the plants in a field.