Onion planting by direct seeding into the fields
Abstract
Determine some quantitative and qualitative elements of the dry bulbs production in order to establish the suitability of the best cultivar, due to the fact that the soil characteristics influence for sure the success of the onion crop planted directed onto the field.
The biological material was represented by the Diamant (n.t. Diamante in English) aborigine type and the Dutch hybrid Daytona. The crops were created in Braila county, on a typical chernozeme type of soil with physical and chemical characteristics which are favorable to creating the onion crop (the apparent density 1,18 g/cm³; pH 7,91; humus 3,27%) through direct seeding, the experimental variants being placed in store blocks without randomization, the experimental area being of 480 square meters.
The average percentage of emergence was 85,70% at Daytona and 81,30% at Diamant type, but the density at harvesting is 84,2% at Daytona and 79,7% at Diamant. In what concerns the average weight of the onion bulbs with a diameter over 30 mm was 51,84 g at Daytona and 53,68 g at Diamant. In connection to the quality of the bulbs at Daytona, the bulbs with a diameter over 30 mm were in a percentage of 90,8%, and at Diamant in a percentage of 73,4%. The productions obtained were 41,40 t/ha at Daytona and 33,52 t/ha at Diamant.
Following to the determinations performed, it is observed that for these two cultivars analyzed, the productions obtained were over 30 t/ha, with an extra difference of 7,8 t/ha at Daytona hybrid which excelled also at a better uniformity of the bulbs.
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