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Early
cultivation
Cultivation
of young plants in the greenhouse
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Besonders
deutliche Verfrühung erzielt man durch Anzucht frühreifender Sorten
im A considerable earlier harvest can be achieved by growing young
plants of early maturing varieties in the greenhouse before planting
them on the field. The young plants can be put in almost all common
substrates for young plants. The quantity of the substrate per plant
unit should be sufficient for two - three weeks. Paperpots and plastic
pots can be used (clay pots are not suitable as they might break when
the plant develops strong roots). Too high temperatures in the greenhouse
cause early flowering and at the same time lead to too low vegetative
development so that, on the field, the plants and ears remain too
small. The average temperature should be aprox. 12 - 15 °, air condition
should be adjusted to 20°. |
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Early
covering
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Corn shows very positive reactions on
the application of mulch, perforated plastic or fleece for the protection
of young plants. Especially fleece has proved successful. By accelerating
the warming up of the soil and reducing the germination period the
harvest is advanced by aprox. 14 days in comparison with uncovered
plants. |
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Combination
of measures
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The
above mentioned measures can also be combined. Thus, it is possible
to cover populations with fleece, and the harvest of direct sowings
can be advanced by the application of mulch or fleece. Fleece (17
gr/ m2) can remain on the field until the plants are knee-high, but
it must be large enough to give the growing plants enough room. |
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