Deficiencies

Sugar Beet Crop Deficiencies

Please see below some examples of sugar beet crop deficiencies
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Deficiency Type

Manganese Deficiency

Manganese is the most widespread micronutrient problem in the UK. Sugar beet is particularly susceptible to manganese deficiency.  Deficient plants may show first symptoms at the 2-leaf stage. Interveinal yellow mottling appears on the older leaves and leaf margins curl inwards to give a triangular erect leaf. This is known as  ‘speckled yellows’.

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Deficiency Type

Magnesium Deficiency

In sugar beet, first symptoms of magnesium deficiency is interveinal chlorosis, beginning at the tips and margins of the leaves, and then moving progressively towards their midribs. Chlorosis is followed by marginal and interveinal necrosis. A green freckling, accompanied by leaf deformation, often occurs when the plants are young. Symptoms are often mistaken for those of potassium deficiency.

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Deficiency Type

Boron Deficiency

When boron is deficient the young leaves wilt and in time they can collapse and fail to develop. Other symptoms are pronounced crinkling of the leaf blades and darkening and cracking of the petioles. The growing point of the plant will die and as a result the crown darkens and becomes subject to rot.  A further effect is on root growth. The fibrous roots fail to develop and this may be the primary cause of the wilting of the tops.

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Deficiency Type

Sulphur Deficiency

Early symptoms are similar to those of nitrogen deficiency. Leaves of the entire plant change gradually from green to light green, then to light yellow with only a faint tinge of green remaining.  During this time, the leaves remain erect while the petioles and blades become brittle and break readily.  In extreme cases  brown blotches of an irregular pattern form on the leaf blades. The brown blotches may also appear on the petioles but, as a rule, do not become necrotic.

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