Some factors affecting runner formation and transplant production in strawberry nurseries
2011
Ahmed, W.M.S.
This study was carried out at the Experimental Farm of the Strawberry Improvement Center, Faculty of Agriculture, Ain Shams University, Ismailia Governorate, during the two summer seasons of2007 and 2008. The aim of this study was to investigate the effect of four foliar applications, i.e., garlic extract at 2 %, yeast extract at 2.5%, GA3 at 50 ppm or amino acids at 1.5 % (three times for each one during the growing season), as well as two agricultural practices, i.e., runner fixation or leaf defoliation of nursery mother plants in addition to control plants (non-treated )on runner formation and transplant production of strawberry (Fragaria x ananassa cv.Sweet Charlie). The experimental design was a randomized complete block design with three replicates. The soil type of the experimental site was sandy with pH of 7.1and EC of 0.8 mmhos/cm .Results indicated that the highest number of runners/plant was obtained from yeast, GA3, amino acids or runner fixation treatments. Moreover, number of transplants increased significantly with GA3, amino acids or defoliation treatments.Control plants showed the lowest values in the two tested years. Garlic extract, runner fixation or defoliation treatments resulted in a significant increase in transplant crown diameter. Number of leaves/transplant was not affected by the tested treatments.Using garlic extract or runner fixation increased significantly root length On the other hand, yeast extract or runner fixation gave the highest values of total carbohydrates in crowns. Also, garlic or yeast spray showed the lowest percentage of fungal diseases in crowns and roots
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