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Abou EL-Yazied, A., El-Gizawy, A., Ragab, M., Hamed, E. (2007). EFFECT OF PLANTING DATES AND CHELATED CALCIUM FOLIAR APPLICATION ON TIPBURN OF HEAD LETTUCE. Journal of Plant Production, 32(2), 1343-1353. doi: 10.21608/jpp.2007.206162
A. Abou EL-Yazied; A. M. El-Gizawy; M. I. Ragab; E. S. Hamed. "EFFECT OF PLANTING DATES AND CHELATED CALCIUM FOLIAR APPLICATION ON TIPBURN OF HEAD LETTUCE". Journal of Plant Production, 32, 2, 2007, 1343-1353. doi: 10.21608/jpp.2007.206162
Abou EL-Yazied, A., El-Gizawy, A., Ragab, M., Hamed, E. (2007). 'EFFECT OF PLANTING DATES AND CHELATED CALCIUM FOLIAR APPLICATION ON TIPBURN OF HEAD LETTUCE', Journal of Plant Production, 32(2), pp. 1343-1353. doi: 10.21608/jpp.2007.206162
Abou EL-Yazied, A., El-Gizawy, A., Ragab, M., Hamed, E. EFFECT OF PLANTING DATES AND CHELATED CALCIUM FOLIAR APPLICATION ON TIPBURN OF HEAD LETTUCE. Journal of Plant Production, 2007; 32(2): 1343-1353. doi: 10.21608/jpp.2007.206162

EFFECT OF PLANTING DATES AND CHELATED CALCIUM FOLIAR APPLICATION ON TIPBURN OF HEAD LETTUCE

Article 21, Volume 32, Issue 2, February 2007, Page 1343-1353  XML PDF (610.19 K)
Document Type: Original Article
DOI: 10.21608/jpp.2007.206162
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Authors
A. Abou EL-Yazied; A. M. El-Gizawy; M. I. Ragab; E. S. Hamed
Horticulture Dep., Faculty of Agric., Ain Shams Univ., Shoubra Elkheima, Cairo, Egypt.
Abstract
This work was carried out at Nikla village, Giza governorate, during 2002 /2003 and 2003/2004 seasons to evaluate the effect of three planting dates ( the first of October, November and December), and applying of 0 ,  200 , 400 and 600 ppm chelated calcium as foliar application on vegetative characteristics (.i.e., fresh and dry weight, head size and number of leaves per plant ) and percentage of tipburn injury of head lettuce cv. Limor .The results indicated that seed sown on the first of December increased head size and Ca concentration in leaves compared to other sowing dates. But there were no significant diffrance among planting dates in head fresh and dry weight, number of leaves per plant and percentage of tipburn. Whereas foliar spray with chelated calcium reduced and prevented tipburn injury and increased percentage of Ca concentration in leaves but had no significant effect on fresh and dry weight and  number of leaves per plant. Thus, foliar spray with 600 ppm chelated Ca in the three planting dates gave the best results and prevented tipburn incidence.
Keywords
Head lettuce; Lactuca sativa var; capitata. L; Chelated Calcium; foliar application; planting dates; Tipburn
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