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Hasseb, G. (2007). UTILIZATION OF SOME CHEMICALS FOR STIMULATING WINTER SEASON CROP OF GUAVA.. Journal of Plant Production, 32(6), 4659-4667. doi: 10.21608/jpp.2007.208786
G. M. Hasseb. "UTILIZATION OF SOME CHEMICALS FOR STIMULATING WINTER SEASON CROP OF GUAVA.". Journal of Plant Production, 32, 6, 2007, 4659-4667. doi: 10.21608/jpp.2007.208786
Hasseb, G. (2007). 'UTILIZATION OF SOME CHEMICALS FOR STIMULATING WINTER SEASON CROP OF GUAVA.', Journal of Plant Production, 32(6), pp. 4659-4667. doi: 10.21608/jpp.2007.208786
Hasseb, G. UTILIZATION OF SOME CHEMICALS FOR STIMULATING WINTER SEASON CROP OF GUAVA.. Journal of Plant Production, 2007; 32(6): 4659-4667. doi: 10.21608/jpp.2007.208786

UTILIZATION OF SOME CHEMICALS FOR STIMULATING WINTER SEASON CROP OF GUAVA.

Article 21, Volume 32, Issue 6, June 2007, Page 4659-4667  XML PDF (467.13 K)
Document Type: Original Article
DOI: 10.21608/jpp.2007.208786
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Author
G. M. Hasseb*
Pomology Dept., Fac. Agri., Cairo Univ., giza, Egypt
Abstract
      Selected Guava (Psidium guajava L.) clone of 11 years old, cultivated in clay soil were sprayed with potassium nitrate at 2 & 4 and 6% or ammonium sulphate at 5&10 and 15% at bloom stage. Floral abscission, after two weeks after spraying was enhanced by the two chemical application. Moreover, maximum floral abscission was recorded when trees received to 6% potassium nitrate followed by sprayed with 15% ammonium sulphate. Whereas, the lowest fruit retention of summer crop was caused by 6% potassium nitrate, followed by the ammonium sulphate at 15%, while the control trees recorded the maximum fruit retention. The yield of winter crop was significantly increased by application of potassium nitrate at 6% followed by ammonium sulphate at 5%. Yet, the winter fruits produced from potassium nitrate at 6% or ammonium sulphate at 15% exhibited the highest weight and diameter as well as produced higher T.S.S with low acidity.
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