The Effect of Plant Growth Promoting Rhizobacteria on Barley Seedling Growth, Nutrient Uptake, Some Soil Properties, and Bacterial Counts

Ramazan ÇAKMAKÇI; Mesude Figen DÖNMEZ; Ümmügülsüm ERDOĞAN

Makale detayları

The Effect of Plant Growth Promoting Rhizobacteria on Barley Seedling Growth, Nutrient Uptake, Some Soil Properties, and Bacterial Counts

Yazarlar:

Ramazan ÇAKMAKÇI | Mesude Figen DÖNMEZ | Ümmügülsüm ERDOĞAN

Yayıncı:

TUBITAK

Ana Başlıklar:

Tarım

Dergi:

Turkish Journal of Agriculture and Forestry 2007 Vol.31 Issue 3, pp.189-199

Belge Tipi:

Makale

Yayın Tarihi:

2/2007

Belge Dili:

İngilizce

Document ID (Org No.):

2000808767

Sıklık:

İki Aylık

eISSN:

1303-6173

pISSN:

1300-011X

Anahtar kelimeler:

Özet:

 

This study was conducted with barley in greenhouse conditions in order to investigate seed inoculation with 5 different N2-fixing (Bacillus licheniformis RC02, Rhodobacter capsulatus RC04, Paenibacillus polymyxa RC05, Pseudomonas putida RC06, and Bacillus OSU-142) and 2 different phosphate-solubilising (Bacillus megaterium RC01 and Bacillus M-13) bacteria in comparison to control and mineral fertiliser (N and P) application. Among the strains used in the present study, 6 plant growth promoting rhizobacteria (PGPR) stimulated indole acetic acid (IAA) production and 3 of them stimulated phosphate solubilisation; all bacterial strains fixed N2 and significantly increased the growth of barley. Available phosphate in soil was significantly increased by seed inoculation with Bacillus M-13 and B. megaterium RC01. Maximum NO3-N was found in soil after inoculation with N2-fixing Bacillus OSU-142, followed by P. polymyxa RC05 and R. capsulatus RC04. Total culturable bacteria count increased in all treatments with time, whereas N2-fixing bacteria decreased with time, except with B. megaterium RC01 inoculation. The data suggest that seed inoculation of barley with plant PGPR increased root weight by 17.9%-32.1% as compared to the control, and increased shoot weight by 28.8%-54.2%, depending on the species. N2-fixing bacterial inoculation significantly increased uptake of N, Fe, Mn, and Zn by barley. The production of hormones is suggested to be one of the mechanisms by which PGPR stimulate barley growth. Effective Bacillus species, such as OSU-142, RC07, M-13, P. polymyxa RC05, P. putida RC06, and R. capsulatus RC04, may be used in agriculture.

 

Bu araflt›rmada befl azot fikseri (Bacillus licheniformis RC02, Rhodobacter capsulatus RC04, Paenibacillus polymyxa RC05, Pseudomonas putida RC06 ve Bacillus OSU-142) ve iki fosfat çözücü (Bacillus megaterium RC01 ve Bacillus M-13) bakteri afl›lamas›n›n kontrol, N ve P gübresi ile karfl›laflt›rmal› olarak sera koflullar›nda arpa bitkisinin geliflimi üzerine etkisi test edilmifltir. Test edilen bitki geliflimini teflvik edici bakterilerin (PGPR) alt›s›n›n indol asetik asit üretti¤i, üçünün fosfat çözebildi¤i ve bütün izolatlar›n azot fiksetti¤i ve arpa geliflimini teflvik etti¤i belirlenmifltir. Bacillus M-13 ve B. megaterium RC01 afl›lamas› toprakta al›nabilir P miktar› önemli ölçüde art›rm›flt›r. Toprakta en yüksek NO3-N miktar› Bacillus OSU-142 afl›lamas›yla elde edilirken, bunu P. polymyxa RC05 ve R. capsulatus RC04 takip etmifltir. Bütün uygulamalar toprakta toplam bakteri say›s›n› art›rm›fl, topraktaki azot fikseri say›s› B. megaterium RC01 d›fl›ndaki uygulamalarla zamanla azalm›flt›r. Bitki geliflimini teflvik edici bakteri afl›lamalar›, bakteri sufllar›na ba¤l› olarak, arpa kök a¤›rl›¤›n› %17.9-32.1, gövde a¤›rl›¤›n› ise % 28.8- 54.2 oran›nda art›rm›flt›r. Azot fikseri bakteri afl›lamalar› arpa N, Fe, Mn ve Zn al›m›n› önemli düzeyde art›rm›fl ve bakterilerce hormon üretiminin bitkisel geliflimi teflvik mekanizmalardan biri oldu¤u belirlenmifltir. Bacillus OSU-142, RC07 ve M-13 gibi etkin Bacillus türlerinin ve P. polymyxa RC05, P. putida RC06 ve R. capsulatus RC04 izolatlar›n›n tar›mda kullan›labilece¤i sonucuna var›lm›flt›r.  .

Makale detayları

The Effect of Plant Growth Promoting Rhizobacteria on Barley Seedling Growth, Nutrient Uptake, Some Soil Properties, and Bacterial Counts

Yazarlar:

Ramazan ÇAKMAKÇI | Mesude Figen DÖNMEZ | Ümmügülsüm ERDOĞAN

Yayıncı:

TUBITAK

Ana Başlıklar:

Tarım

Dergi:

Turkish Journal of Agriculture and Forestry 2007 Vol.31 Issue 3, pp.189-199

Belge Tipi:

Makale

Yayın Tarihi:

2/2007

Belge Dili:

İngilizce

Document ID (Org No.):

2000808767

Sıklık:

İki Aylık

eISSN:

1303-6173

pISSN:

1300-011X

Bitki geliflimini teflvik edici bakteri

‹AA

azot fiksasyonu

fosfat çözücülü¤ü

arpa

Sayı

Makale detayları

The Effect of Plant Growth Promoting Rhizobacteria on Barley Seedling Growth, Nutrient Uptake, Some Soil Properties, and Bacterial Counts

Yazarlar: Ramazan ÇAKMAKÇI | Mesude Figen DÖNMEZ | Ümmügülsüm ERDOĞAN

Yayıncı: TUBITAK

Ana Başlıklar: Tarım

Dergi: Turkish Journal of Agriculture and Forestry 2007 Vol.31 Issue 3, pp.189-199

Belge Tipi: Makale

Yayın Tarihi: 2/2007

Belge Dili: İngilizce

Document ID (Org No.): 2000808767

Sıklık: İki Aylık

eISSN: 1303-6173

pISSN: 1300-011X

Bitki geliflimini teflvik edici bakteri

‹AA

azot fiksasyonu

fosfat çözücülü¤ü

arpa

Sayı

Yazarlar:

Ramazan ÇAKMAKÇI | Mesude Figen DÖNMEZ | Ümmügülsüm ERDOĞAN

Yayıncı:

TUBITAK

Ana Başlıklar:

Tarım

Dergi:

Turkish Journal of Agriculture and Forestry 2007 Vol.31 Issue 3, pp.189-199

Belge Tipi:

Makale

Yayın Tarihi:

2/2007

Belge Dili:

İngilizce

Document ID (Org No.):

2000808767

Sıklık:

İki Aylık

eISSN:

1303-6173

pISSN:

1300-011X