Growth and development of Brassica oleracea var. Italica plenk in response to planting date
2006
Hasan, Ahmad A. | Shehata, Saeid A. | El-Helali, Mussttafa A.
This investigation was carried out during the two successive winter seasons of 2002/2003 and 2003/2004 to study the effect of planting date (15 Aug., 15 Sep. and 15 Oct.) on the morphological characters and growth formulas, along with some of the associated characters in broccoli hybrid Green Comet. Early planting on 15 Aug. resulted in a significant increase in plant and leaf dry matter, plant height, economic yield, top and side head yield, leaf area index and crop growth rate in both seasons and head diameter and compactness in 2003/2004. Meanwhile, it resulted in a significant reduction in the total number of leaves and leaf primordia, head dry matter % and head chlorophyll and carotenoides content in both season and head vitamin C content in 2003. The third planting date on 15 Oct. was significantly the highest in total number of leaves and leaf primordia and leaf chlorophyll content and the lowest in biological yield, economic yield, t op and side head yield and leaf area index. It was also, the latest date in head differentiation and took the longest period from transplanting to harvest.
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