Bulbing ratio and dry weight of onion plant grown in sandy soil as affected by planting date, planting distance and potassium fertilizer rate [electronic resource].

Includes references.

This work was carried out during winter seasons of 2010/2011 and 2011/2012 at El-Khattara Experimental Farm, Fac. Agric., Zagazig University, to study the effect of planting date, plant spacing and potassium levels on bulbing ratio and dry weight of onion grown in sandy soil. At 130 days after transplanting (DAP), early transplanting of onion (30th November) gave high values of neck diameter and total dry weigh /plant, whereas delaying transplanting gave the highest value ofbulbing ratio, also plant spacing at 11 or 15 cm increased total dry weight /plant. In general, the interaction treatments among planting date on 30th November, planting densities at 11 or 15 cm and 80 or 120 K₂O/fad., recorded high values of neck diameter, bulb diameter and total dry weight/plant compared to other treatments at 110 and 130 DAP in both seasons. Also, bulbing ratio increased with delaying transplanting (30th December) under 11 or 15 cm planting distances and K₂O at 80 or 120 kg/fad.).

Summary in Arabic.

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