EFFECT OF DIFFERENT RATES OF BENTONITE COATED UREA AS A SLOW RELEASE N FERTILIZERS ON LEAF MINERAL STATUS, YIELD AND FRUIT QUALITY OF LE-CONTE PEAR TREES | ||
| Journal of Plant Production | ||
| Article 18, Volume 25, Issue 2, February 2000, Pages 1025-1033 PDF (661.83 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2000.258582 | ||
| Authors | ||
| E. A. M. Mostafa,; N. E. Kassim; M. S. Abou Rayya | ||
| Hort. Department, National Research Centre,El-Tahrir St., Dokki | ||
| Abstract | ||
| Two slow release N fertilizers namely bentonite coated urea with thin coated material (4% BCU1) and bentonite coated urea with thick coated material (12% BCU 2) each at 150, 225 and 300 gm N/tree/year in addition to urea (fast release N fertilizer) at 300 gm N/tree/year (as a recommended dose) added to le-conte pear trees during 1997 and 1998 seasons. Results show that application of slow release N fertilizers surpassed the application of urea in improving leaf mineral content especially N and K, increasing yield and improving physical characteristics of fruits. The best results with regard to yield and fruit quality of le-conte pear trees were obtained in the treatment of bentonite coated urea with thick material (12% BCU 2) at 150 gm N/tree year. Total soluble solids, total acidity and total soluble solids/acid ratio were not affected significantly by different treatments in both seasons of study. | ||
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