Effect of phosphate Rock and Bio-Fertilizer by Bacillus subtilis on Growth of Three Citrus Rootstocks transplants

Bhew  Abud, Ghaleb; Abd Ali. Abdul Hussein, Muslim; Eiden Hassan, Alaa

	Effect of phosphate Rock and Bio-Fertilizer by Bacillus subtilis on Growth of Three Citrus Rootstocks transplants
Kufa Journal for Agricultural Science
Article 1, Volume 7, Issue 1, 2015, Pages 1-16
Authors
Ghaleb Bhew Abud; Muslim Abd Ali. Abdul hussein; Alaa Eiden Hassan
Abstract
This study was conducted at the nursery of citrus certified seedlings production which belongs to Ministry of Agriculture/ Directorate of Horticulture and Forestry/ Kerbala Province (Hindyia District ) from 1st Sep. 2012 to 1st June 2013 to study the response of six month. old transplants of three citrus rootstocks { sour orange ( Citrus aurantium L. (,Volkamer lemon ( C. volkameriana Ten and pas.) and Swingle Citrumelo ( C. paradise X P. trifoliata ) to bio –fertilizer by Bacillus subtillis phosphate as phosphate rock or super phosphate and their interactions on some shoot and root traits (height , leaf area, dry weight of shoot and root and chlorophyll content) after 6 and 9 months from the application of treatments. Randomized complete block design was used with three replicates for experiments and L.S.D used in order to compare between means at 0.05 probability. The fertilizers combinations effected significantly studied traits in both growth periods, especially the combinations of ( bacterial inoculation + phosphate rock) which had significantly effected on plant height, leaf area, shoot and root dry weight after 9 months as compared to control which gave the lowest value. There was no significant difference between (bacterial inoculation+ triple super phosphate) and ( bacterial inoculation+ phosphate rock) in total chlorophyll in leaves. The rootstock swingle citrumelo had superiority in the traits of plant height, dry weight of shoot and root after 9 month followed by volkamer lemon and sour orange. Sour orange revealed significant increase in leaf area in both growth period and total chlorophyll after 6 month. Whereas volkamer lemon had the superiority in just total chlorophyll after 9 month. The interaction between swingle citrumelo root stocks and the two combinations (bacterial inoculation+ phosphate rock) and ( bacterial inoculation + triple super phosphate) was more effective in plant height, dry weight of shoot, and root growth, than other combination after 9 months of treatments application compared to other combinations.
Keywords
Rock Phosphate; Citrus rootstocks; biofertilizer; Bacteria Bacillus subtilis; Bacillus subtilus

Statistics Article View: 188 PDF Download: 102