Weed beet

In some years, if there is enough soil moisture, stubble cultivatiorrs arrd the stale seedbed technique can be a useful aid to weed control. The soil is cirltivated ready to sow the next crop weeds are allowed to grow and are then killed before planting the crop. Inter-row cirltivations are still used in some crops, particularly if there is a difficult weed to corrtrol, such as weed beet in sugar beet, or where there ate limited herbicides approved for use, as in field vegetables. There is some interest in the use of in-crop weeders as a method of reducing herbicide inputs. 

Rotations. Growing leys and various arable crops that ate planted at different times of the year usually leads to a different weed flora. There is also an opportunity to use different types or groups of herbicides. This method is useful if there are difficult weeds such as barren brome, volunteer potatoes, herbicide resistant black-grass and weed beet to control. 

In order to prevent the build-up of Rhizomania (Table 6.2), as a condition of the contract sugar beet may not be sown in a field which has grown arty Beta species, e.g. fodder beet, mangels, red beet, in either of the two preceding years. This restriction also helps to prevent the btrild-up of the beet cyst nematode (Table 7.1) and weed beet, although most Brassica crops as host crops can perpetuate the nematode. A three or four year interval is, in fact, preferable between sugar beet and any other closely related crops, as well as Brassicae. 

A well-worked imder-structure by deep loosening equipment with no soil inversion is, in some situations, preferable to the plough. The latter should be avoided when blowing (wind erosion) could be a problem. Non-ploughing techniques may also help to prevent weed beet germinating in the beet crop. The weed can more easily be dealt with in other crops in the rotation. 

Once weed beet becomes established it is seU-perpetuatmg (although it can remain dormant for many years) and on average it produces 2000 seeds in the year. However, only about 50% survive, but nevertheless a light infestation (perhaps 1000/ha) can mean one million weed beet/ha the following year. 

In addition to preventing the propagation of seed from bolters or weed beet which have already contaminated the crop, it is important that weed beet in crops other than sngar beet shonld also be controlled. Weed beet found growing on old clamp and loading sites, headlands and waste land mnst also be destroyed. 

The effect of cultivations on weed beet is being examined to try and find out the ideal sequenee of eultivations neeessary to reduee the weed beet population more rapidly. Direct drilling, tine cultivation and ploughing ate all being studied. 

Weed beet can be a problem. In fodder beet it tends not to be treated as seriously as in the sugar beet crop. Apart from the fact that the problem is perpetuated if the weed is allowed to grow unchecked (obviously a serious problem if sugar beet is also grown on the farm), it does compete with the fodder beet itself and with the following crops in the field. Hand rongueing is the best form of control. 

The spores are air-bome and move from diseased plants found at loading sites and from roots left in the field and also from weed beet to infect the new crop. Disease favoured by dry, warm weather... 

Erautt n. (pi. Erauter). herb, plant weed top (of beets, etc.) cabbage. 

The same applies to sugar beet as to linseed, and it is expensive to keep weeded. 

A mass poisoning of female collective farm workers while weeding the sugar beet field took place eight days after the last polychlorpinen treatment (with high soil humidity). 

The beet family is botanically named the Chenopodiaceae, or goosefoot family. As well as the crops below, it includes the grain quinoa, and several "edible weeds" such as fat hen, which loves the fertile soil in a vegetable garden. 

The major crops for agrochemical use are cotton, rice, maize, vegetables and top fruit for insecticides small grain cereals, rice, vines and top fruit for fungicides, and maize, soybeans, small grain cereals, rice, industrial weed control, plantations and orchards for herbicides. Other crops that may be of interest include sugar beet, oil-seed rape, potatoes and citrus dependent upon your company s presence in these crops. 

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