Drainage of water from the field can be very important during the time of crop establishment, high rainfall events and during attacks by crop pests.
In direct seeding situations which include nurseries, fields often need to be drained during the establishment stage to improve both the rate and number of plants established. While a growing rice crop can withstand total inundation for short periods, major yield losses will occur if lodged crops are flooded during the grain ripening stage and water cannot be removed because of poor drainage. In dry periods water may need to be re-circulated from one field to another to help save the crop. When pests such as the golden apple snail attack crops, the only recourse is to drain the whole field rapidly.
In most level fields drains around the periphery of the field will be sufficient to drain off excess water in a timely manner. In large fields and some nurseries, small internal drains running from the center of the field to the extremities of the field may also be needed.
Submitted by yogesh on Mon, 24/11/2008 - 11:02
Shortcuts
User login
Featured User
|
A User from Hanumangarh, Rajasthan,India |
Statistics
- Registered Users: 8407
- Last Registered User: letaloeragcainxghf
- Published Nodes: 29933
Drainage
This operation is always best performed in spring or summer, when the ground is dry. Main drains ought to be made in every part of the field where a cross-cut or open drain was formerly wanted; they ought to be cut four feet (1.2 m) deep, upon an average. This completely search engine marketing secures them from the possibility of being damaged by the treading of horses or cattle, and being so far below the small drains, clears the water finely out of them. In every situation, pipe-turfs for the main drains, if they can be had, are preferable. If good stiff clay business opportunity, a single row of pipe-turf; if sandy, a double row. When pipe-turf cannot be got conveniently, a good wedge drain may answer well, when the subsoil is a strong, stiff clay; but if the subsoil be only moderately so, a thorn drain, with couples below, will do still better; and if the subsoil is very sandy, except pipes can be had, it is in vain to attempt under-draining the field by any other method. It may be necessary to mention here that the size of the main drains ought to be regulated according to the length and declivity of the run, and the quantity of water to be carried off by them. It is always safe, however web hosting, to have the main drains large, and plenty of them; for economy here seldom turns out well.