Effects of Plant Growth Promoting Microorganisms on Yield and Quality Parameters of Lettuce (Lactuca sativa L.)

Abstract

This study was conducted to determine the effects of plant growth promoting microorganisms on yield and some quality attributes of ‘Abbice’ crisp lettuce variety. Tested treatments were applied via drip irrigation at a dose of 10 ml / L Perla Vita, as water (95%) and molasses (5%) mixture of Lactobacillus casei (107), Lactobacillus plantarum (107), Rhodopseudomonas palustris (105), and Saccharomyces cervisiae (103)] four times as 1, 2, 3 and 4 weeks after planting the lettuce seedlings. The lettuces in the control did not receive any treatments. Head weight, diameter and height, unmarketable and marketable leaf weight and number, leaf number, root crown diameter, stem length and thickness, and leaf colour (L*, a*, b*) were determined in harvested plants. Treatment with plant growth promoting microorganisms increased head weight and diameter by 7.4% and 6.2%, respectively compared to the control plants. Applications also increased marketable head and leaf weight by 12.0 % and 12.1%, respectively. Unmarketable leaf number and weight were lower (2.8 leaves/head and 11.4 g/head) in treated plants than the untreated lettuces (3.8 leaves/head and 22.3 g/head). Effects of tested microorganisms on other quality parameters showed similarity with control group. The results displayed that plant growth promoting microorganism treatments increases head weight and diameter, marketable head and leaf number whereas decreases unmarketable leaf number and weight.

Keywords

• Lettuce,head diameter,head weight,colour.

References

1. 1. FAOSTAT.2017. Statistics Division. Food and Agriculture Organisation of United Nations, Italy.
2. 2. TURKSTAT.2017.Crop Production Statistics. Turkish Statistical Institute, Ankara.
3. 3. Zaman M, Kurepin LV, Catto W, Pharis RP. 2015. Enhancing crop yield with the use of N‐based fertilizers co‐applied with plant hormones or growth regulators. Journal of the Science of Food and Agriculture. 95(9): 1777-1785.
4. 4. Esitken A, Yildiz EH, Ercisli S, Donmez MF, Turan M, Gunes A. 2010. Effects of plant growth promoting bacteria (PGPB) on yield, growth and nutrient contents of organically grown strawberry. Scientia Horticulturae. 124: 62-66.
5. 5. Ozturk A, Caglar O, Sahin F. 2003. Yield response of wheat and barley to inoculation of plant growth promoting rhizobacteria at various levels of nitrogen fertilization. Journal of Plant Nutrition and Soil Science. 166(2): 262-266.
6. 6.Bhattacharyya PN, Jha DK. 2012. Plant growth-promoting rhizobacteria (PGPR): emergence in agriculture. World Journal of Microbiology and Biotechnology. 28(4): 1327-1350.
7. 7. Tahir M, Sarwar MA. 2013. Plant growth promoting rhizobacteria (PGPR): A budding complement of synthetic fertilizers for improving crop production. Pakistan Journal of Life and Social Sciences. 11(1): 1-7.
8. 8. Rodriguez H, Fraga R. 1999. Phosphate solubilizing bacteria and their role in plant growth promotion. Biotechnology Advances. 17: 319-339.

9. 9. Kumar V, Narula N. 1999.Solubilization of inorganic phosphates and growth emergence of wheat as affected by azotobacter chroococcum. Biology and Fertility of Soils. 28: 301-305.
10. 10. Weyens N, van der Leile D, Taghavi S, Newman L, Vangronsveld J. 2009. Exploiting plant–microbe partnerships to improve biomass production and remediation. Trends in Biotechnology. 27(10): 591-598.
11. 11. Karaçalı İ, Tüfenkçi Ş. 2010. Bitki beslemede yeni yaklaşımlar ve gübre-çevre ilişkisi. Ziraat Mühendisliği VII. Teknik Kongresi, Ankara. 257-268 (in Turkish).
12. 12. Ipek M, Pirlak L, Esitken A, Figen Dönmez M, Turan M, Sahin F. 2014. Plant Growth-Promoting Rhizobacteria (PGPR) increase yield, growth and nutrition of strawberry under high-calcareous soil conditions. Journal of Plant Nutrition. 37(7): 990-1001.
13. 13. Sen F., Teksur, PK, Okşar RE, Güleş A, Aşçıoğul, TK. 2016. effects of plant growth promoting microorganisms on yield and quality parameters of lettuce (Lactuca sativa L.)Journal of Adnan Menderes University, Agricultural Faculty. 13(1): 35-40 (in Turkish).
14. 14. McGuire RG. 1992. Reporting of objective color measurements. HortScience. 27(12): 1254-1255.
15. 15. Baslam M, Garmendia I, Goicoechea N. 2011. Arbuscular mycorrhizal fungi (AMF) improved growth and nutritional quality of greenhouse-grown lettuce. Journal of Agricultural and Food Chemistry. 59: 5504-5515.
16. 16. Sahin F, Kotan R, Demirci E, Miller SA. 2000. Domates ve Biber Bakteriyel Leke Hastalığı ile Biyolojik Savaşta Actiguard ve Bazı Antagonistlerin Etkinliği. Atatürk Üniversitesi Ziraat Fakültesi Dergisi 31: 11–16 (in Turkish).