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Showing posts with label rainfall. Show all posts
Showing posts with label rainfall. Show all posts

Sunday, June 12, 2011

Rice Crop

Rice is the most edible grain in the world after maize but if we are talking about the human intake the Rice comes first as maize is not only use as human intake. It has great nutritional values as it has carbohydrate content in it and proteins but not all essential proteins are present in it. Rice can be cooked with different recipes and has a delicious taste.
Rice can grow in any area with hard clay soil which has hard pan because it requires plenty of water to grow so it should be cultivated in areas which has good water resources and also low labour cost as it also needs many labours especially during harvesting . Rice can be grown for the reclaimation of saline soil as it leaches the excess salts. After setting the seedlings in field, it is required to irrigate the field with plenty of water as this water reduces the chances of weed production. Rice are harvested when their seeds become dry and has water 25% water content. Harvesting can be done with machines but in most of the Asian countries it is done manually. After harvesting, the chaff (outer covering of seed) is removed by using rice huller. At this time the rice is known as brown rice but it still has husk which also have to remove so the product is white rice which are now ready to cook.

Friday, May 13, 2011

Irrigation

As everybody knows that water is the basis for all living things. Supplying moisture to the crop through a manually, electrically or Mechanically manged system is called Irrigation. Moisture is essential for the plant growth, it transport nutrients from the soil to the plant, it cools down the soil temperature and it facilitate the microbial life in soil necessary for plants.
Sources of Irrigation: Mainly three sources are known as a source of Irrigation Water.
1. Surface Water: It includes all river, lakes, steams and any running water. Water coming from the mountains due to the snow melting is the source of this type of Irrigation.
2. Ground Water: Water present inside the earth is a major source of irrigation water which can be pumped through tube wells.
3. Rainfall: Rainfall is not a reliable source of water as it may increase or decrease. It is also not sufficient in some areas as the rainfall in arid and semiarid regions of world is not sufficient to meet the needs.