Pseudomonas bacteria and phosphorous fertilization, affecting wheat (Triticum aestivum L.) yield and P uptake under greenhouse and field conditions

• Autorzy: Zabihi H.R. , Savaghebi G.R. , Khavazi K. , Ganjali A. , Miransari M.
• Języki publikacji: EN

Abstrakty

EN

We have recently indicated the plant growth promoting activities of Pseudomonas sp. as well as their alleviating effects on some soil stressors such as salinity. This is because in recent years, biological fertilizers have received special attention by scientists in sustainable agriculture. Accordingly, it is pertinent to specify the beneficiary level of such soil bacteria on plant growth including phosphorous (P) uptake. Hence, the objectives were to determine: (1) the plant growth promoting effects of the tested Pseudomonas sp., and (2) its combined effects with different P fertilization rates on the nutrient uptake (N, P, and K) and yield of wheat (Triticum aestivum L.) under greenhouse and field conditions. The experiments were factorially arranged on the basis of a completely randomized block design with three replicates and were conducted at the Research Farm of Agriculture and Natural Resources Research Center of Khorasan, Mashhad, Iran. P was fertilized at three levels including 0, 25 and 50 kg/ha P₂O₅. Pseudomonas sp. including Pseudomonas fluorescens 153, P. fluorescens 169, P. putida 4, and P. putida 108 were tested. Activities such as production of ACC deaminase and IAA-like products, as well as P solubilization were among the most important activities of the tested Pseudomonas sp. Such bacterial effects greatly enhanced wheat growth and yield under greenhouse and field conditions. The results also showed that the effects of Pseudomonas sp. on wheat nutrient uptake and the effects of bacteria as well as P fertilization on wheat yield were significant. P. putida 108 was the most effective strain enhancing wheat P uptake and grain yield under greenhouse (96 and 58%) and field (80 and 37%) conditions, respectively. Hence, although Pseudomonas sp. could be a suitable replacement for high P fertilization, however, the optimum wheat yield resulted when the bioinoculants are combined with 50% (25 kg/ha P₂O₅) P fertilization. This finding has great agricultural and environmental implications.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2011
• Tom: 33
• Numer: 1
• Opis fizyczny: p.145-152,ref.

Twórcy

autor

Zabihi H.R.

• Soil and Water Research Institute, Mashhad, Iran

autor

Savaghebi G.R.

• Department of Soil Science, College of Agriculture, Tehran University, Karaj, Iran

autor

Khavazi K.

• Soil and Water Research Institute, Karaj, Iran

autor

Ganjali A.

• Research Center for Plant Science, Ferdowsi University of Mashhad, Mashhad, Iran

autor

Miransari M.

• Department of Soil Science, College of Agricultural Sciences, Shahed University, Tehran, Iran

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Identyfikatory

DOI

10.1007/s11738-010-0531-9