PHYSIOLOGICAL RESPONSE OF COTTON (GIZA 89 VARIETY) TO APPLICATION OF NITROGEN AND BIO- FERTILIZER "RHIZOBACTEREIN"

Document Type : Original Article

Author

Cotton Research Institute, Agricultural Research center, Giza.

Abstract

Two field experiments were carried out at Gemmeiza Agricultural Research
station, EI-Gharbia Governorate during two seasons (2002 and 2005). The main
objective of this investigation was to study the effect of bio-fertilizer (Rhizobacterein)
as a method to decrease the levels of mineral nitrogen fertilizer of Giza 89 cotton
variety using 60 kg/fed. without Rhizobacterein (as control) and using 30, and 45
N/fed. with Rhizobacterein at thinning, squaring and flowering stages On some
cotton plant growth traits and attributes, earliness seed cotton yield / fed. and its
components and net income. Results can be summarized as follows:
Application of bio-fertilizer (Rhizobacterein)1 at treatment (8) [45 kg N/fed. +
Rhizo. (2 L.Ifed. squaring) + 2 L.Ifed. flowering stage]. Significantly increased plant
height, number of fruiting branches / plant, boll weight, number of open bolls / plant,
seed cotton yield / fed. and lint percentage in both seasons. Also, applying bio-
fertilization significantly increased the net income / fed. as compared with the check
treatment. Also, using bio-fertilizers Significantly increased dry weight of plant organs
during different growth stages and significantly increased leave contents of
chlorophyll, carotinoids, nitrogen, oil and protein contents in seeds.

Keywords

Journal of Plant Production
Volume 31, Issue 6
June 2006
Pages 3309-3323

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