EI-Etr, W. (2006). INFLUENCE OF PHOSPHORUS SOLUBILIZING BACTERIA, FARMYARD MANURE AND IRON FERTILIZER SOURCSES ON PHOSPHORUS AVAILABILITY AND ITS REFLECTION ON WHEAT PRODUCTIVITY. Journal of Agricultural Chemistry and Biotechnology, 31(6), 3893-3910. doi: 10.21608/jacb.2006.204061
Wafaa M. T. EI-Etr. "INFLUENCE OF PHOSPHORUS SOLUBILIZING BACTERIA, FARMYARD MANURE AND IRON FERTILIZER SOURCSES ON PHOSPHORUS AVAILABILITY AND ITS REFLECTION ON WHEAT PRODUCTIVITY". Journal of Agricultural Chemistry and Biotechnology, 31, 6, 2006, 3893-3910. doi: 10.21608/jacb.2006.204061
EI-Etr, W. (2006). 'INFLUENCE OF PHOSPHORUS SOLUBILIZING BACTERIA, FARMYARD MANURE AND IRON FERTILIZER SOURCSES ON PHOSPHORUS AVAILABILITY AND ITS REFLECTION ON WHEAT PRODUCTIVITY', Journal of Agricultural Chemistry and Biotechnology, 31(6), pp. 3893-3910. doi: 10.21608/jacb.2006.204061
EI-Etr, W. INFLUENCE OF PHOSPHORUS SOLUBILIZING BACTERIA, FARMYARD MANURE AND IRON FERTILIZER SOURCSES ON PHOSPHORUS AVAILABILITY AND ITS REFLECTION ON WHEAT PRODUCTIVITY. Journal of Agricultural Chemistry and Biotechnology, 2006; 31(6): 3893-3910. doi: 10.21608/jacb.2006.204061
INFLUENCE OF PHOSPHORUS SOLUBILIZING BACTERIA, FARMYARD MANURE AND IRON FERTILIZER SOURCSES ON PHOSPHORUS AVAILABILITY AND ITS REFLECTION ON WHEAT PRODUCTIVITY
Soils, Water and Environment Res. Inst., Agric. Res. Center (ARC), Giza, Egypt
Abstract
A field experiment was carried out for two winter seasons 2003/2004 and 2004/2005 in sandy soil under the inoculation with solubilizing bacteria (Bacillus.megatherium). Spilt-split plot design was used where two phosphorus sources (rock phosphate, RP, and super phosphorus, SP), two P fertilizer rates (75 kg P20S fed-1 and 150 kg P20S fed") and two rates of farmyard manure, FYM, (10m3 fed- 1 and 15m3 fed"). All plot of experiments were foliar treated with either FeS04 or Fe- EDTA .
. At flowering stage, results showed that photosynthetic pigment (chlorophyll a (Chi a), chlorophyll b (Chi b) and carotene ,Car) contents of wheat leaves were superior when 15m3 fed-1 FYM was applied as compared to 10m3 FYM . Also inoculation with B.megatherium positively affected Chi a,Chl b and Car as compared to non inoculation. The highest values of chlorophyll content were recorded when applied 15 m3 fed-1 FYM , inoculation by B.megatherium in combination with SP and sprayed Fe-EDTA.
Moreover, dry weight of both shoots and roots, at flowering stage, increased due to 15m3 fed-1 FYM combined with hi~h rate of SP application as well as RP was superior when combined with 10m3 fed - FYM and inoculation with B.megatherium.
In addition, data indicated that FYM applied at a rate 15m3 fed-1 increased N,P & K uptake by both shoots and roots, at flowering stage, of wheat plant as compared to low rate 10m3 fed-1 FYM. Similar trend was obtained when soil inoculated with B.megatherium as compared to no inoculation. Results also revealed that low rate of rock phosphate (RPA) was more effective for N,P&K uptake as compared to the other RB rate (RBP) , opposite trend was recorded for high rate of super phosphate (SPP), which, increased N,P&K uptake by both shoots and roots. Generally, foliar application of FeS04 was superior for both N,P&K uptake by shoots and roots.
At harvest stage, wheat took the same direction for N,P&K uptake by yield components( straw and grains), in spite of Fe-EDTA was superior as compared to FeS04.
On the other hand, mean values of wheat yield components increased significantly due to the application of high rate of FYM ; these increases were 14.0%,11.4% and 3.47% for straw, grains and weight of 1000 grains, respectively. High rates of both RP and SP were more affective as compared to lower rate under spraying with Fe-EDT A. The interaction between tested treatments showed that the highest grain yield of wheat was accompanied with 15 m3 fed-1 FYM application, inoculation with B.megatherium combined with SPB and foliar application with Fe- EDTA.
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