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[R] Soja hispida (Fabaceae).
Fr: Soja; Ge: Soja; Sp: Soja; It: Soia; Pt: Soja.
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- Annual legume forming a tuft 50 to 60 cm in height, alternating leaves of 3 leaflets. The small white or violet flowers are grouped in racemes underneath the leaves(*) .
- It is cultivated for its oleaginous seeds rich in protein. It may also be used as green forage or green fertilizer. The largest seeds are washed, ground and cooked to form soya milk, the origin of margarine. Oil may be extracted from the seeds; the residues are used to make oilseed cakes, an important part of animal feed.
- The phenological stages are: emergence, one-leaf stage, three-leaf stage, flowering and maturity (*) .
- It is sown in spring.
- There are numerous cultivars having different colours and sizes of seed, and also varying in precocity and yield.
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- Diseases: with the exception of sclerotinia disease (Sclerotinia sclerotorium) which is starting to develop, especially in regions with other protinaceous crops, soya diseases do not, as yet, pose any major problem.
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- Principal European pests: there are no pests posing serious problems. The bean seed fly (Delia platura) may need controlling. The European corn borer (Ostinia numilalis) may also attack a soya crop.

[R] Images

* Soja bough (Minost C.)
a: leaf trifoliate; b: flower small, bright in coulour; c: fruit (pod) hairy, containing 2-4 seeds.

* Phenological stages of Soya (Minost C.)
1: emergence; 2: 1-leaf stage; 3: 3-leaf stage; 4: flowering; 5: ripeness.

To read this page in French

HYPPZ on line: Species (scientific names), Pests (common names), Glossary, Crops.

HYP3 : HYPP Phytopathology.

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