EFFECT OF FOLIAR APPLICATION OF YEAST AND UREA ON YIELD AND QUALITY OF THOMPSON SEEDLESS GRAPE {Wills VINIFERA L.) GROWN IN LOANIY SAND CALCAREOUS SOlL | ||||
| Journal of Soil Sciences and Agricultural Engineering | ||||
| Article 7, Volume 30, Issue 4, April 2005, Page 2331-2338 PDF (1.2 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jssae.2005.227512 | ||||
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| Author | ||||
| A. l. Sharaf | ||||
| Soil and Water Science Department, Faculty of Agriculture, El-Shatby, Alexandria University. Alexandria, Egypt. | ||||
| Abstract | ||||
| Two field experiments were carried out during the seasons of 2003 and 2004 at El-Bostan area, Nubaria region. The aim 0‘ the study was to investigate the effect of foliar application of yeast extract. urea at two rates (0.5 and 0.75 “/0 urea) and their combinations on yield and quality characters of Thompson seedless grapes (Vr'ris vinifer; L). Foliar application by yeast o'cract or urea (0.5 0A) significantly increased the yield. density of berries per bunch, bunch and berry dimensions, weights of bunch and berry, as well as T88 and TSS/acidrty ratio, while the fruit acidity significantly cecreased. Foliar application with yeast extract significantly increased N content or leaves from 0.9 “/3 (untreated plants) to 2,0 %, as well as N content of leaves significantly increased from 0.9 % {untreated plants) to 3.4 9’0 or 3.6 0,3 by folrar application wrth 0.5 “it or 0.75 “it urea, respectively. However, foliar application with yeast extract in combination with urea (0.5 % or 0.75 Cfol was significantly decreased N content of leaves. as compared with urea foliar application alone Also, lollar application wrth yeast extract, urea or in combination of both, significantly increased P and. K contents of leaves as compared with untreated plants. | ||||
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