Zahgloul, A., El-Din, M., Ghazi, A. (2015). COMBINATION EFFECTS OF BIOFERTILIZATION AND BIOSTIMULANTS FOLIAR APPLICATION ON YIELD, QUALITY AND MARKETABILITY OF WASHINGTON NAVEL ORANGE FRUITS .. Journal of Agricultural Chemistry and Biotechnology, 6(12), 627-655. doi: 10.21608/jacb.2015.48482
A. E. Zahgloul; M. N. El-Din; Azza A. Ghazi. "COMBINATION EFFECTS OF BIOFERTILIZATION AND BIOSTIMULANTS FOLIAR APPLICATION ON YIELD, QUALITY AND MARKETABILITY OF WASHINGTON NAVEL ORANGE FRUITS .". Journal of Agricultural Chemistry and Biotechnology, 6, 12, 2015, 627-655. doi: 10.21608/jacb.2015.48482
Zahgloul, A., El-Din, M., Ghazi, A. (2015). 'COMBINATION EFFECTS OF BIOFERTILIZATION AND BIOSTIMULANTS FOLIAR APPLICATION ON YIELD, QUALITY AND MARKETABILITY OF WASHINGTON NAVEL ORANGE FRUITS .', Journal of Agricultural Chemistry and Biotechnology, 6(12), pp. 627-655. doi: 10.21608/jacb.2015.48482
Zahgloul, A., El-Din, M., Ghazi, A. COMBINATION EFFECTS OF BIOFERTILIZATION AND BIOSTIMULANTS FOLIAR APPLICATION ON YIELD, QUALITY AND MARKETABILITY OF WASHINGTON NAVEL ORANGE FRUITS .. Journal of Agricultural Chemistry and Biotechnology, 2015; 6(12): 627-655. doi: 10.21608/jacb.2015.48482
COMBINATION EFFECTS OF BIOFERTILIZATION AND BIOSTIMULANTS FOLIAR APPLICATION ON YIELD, QUALITY AND MARKETABILITY OF WASHINGTON NAVEL ORANGE FRUITS .
1Handling Res., Dep., Horticulture Research Institute, ARC, Giza , Egypt.
2Soil,Water and Environmental Research Institute, ARC, Giza , Egypt.
Abstract
Two field experiments were conducted at Brembal , Motobus District, Kafr El-Sheikh Governorate during 2013-2014 and 2014-2015 seasons to study the influence of bio-fertilization with a mixed inoculum containing Azospirillum sp., Bacillus megatherium and Bacillus circulans as well as spray with Jisemar (commercial bio-stimulant) and/ or Azospirillum sp. on productivity and fruit quality of oranges [ fruits drop % , fruits set % , fruits number tree-1, fruit weight (g)] , fruit yield (kg tree-1) , as well as some quality traits [firmness, acidity % , vitamin C content , soluble solids content (SSC%) , SSC / acid ratio of fruits and total chlorophyll, chlorophyll A&B and carotene of fruit rind and NPK % , in leaves].
Regarding spray with bio-stimulants of Azospirillum sp. + Jisemar or Azospirillum sp. individual treatments attained high records over those of not sprayed control, and the differences were mostly significant for fruits set , fruits number / tree and yield ( kg / tree), chlorophyll , firmness , SSC% and vitamin C content , except other components fruit drop, carotene, and SSC/acid ratio which displayed decreases compared to water spray - 100 % NPK fertilized control.
Data revealed that treatments with biofertilization + 75% NPK and spray with biostemulants spray with Azospirillum sp. with Jisemar or Azospirillum sp. individual attained the best . As the first one resulted in a high productivity of orange trees , improved fruit quality and most marketing characteristics at room temperature compared to control and other treatments , thanks to the effects of continuous supplement of plant nutrients and phytochemical compounds, decline rots infection and retarded peel senescence causing longevity for life .
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