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Abstract
Bacillus amyloliquefaciens Bc2 and Trichderma harzianum TR were used to evaluate their growth-promoting activity on cultivated strawberries, under laboratory and field conditions, and we have noticed that the percentage of achene germination is important for ones treated with TR (=97%) followed by those treated with Bc2 strain (=90%) and the control (=84%). Inoculations on field showed that on untreated soil with insecticide, TR is effective and allows the development of plants and extends the duration of flowering and fruiting. On treated soil, Bc2 clearly promotes the growth and development of strawberry seedlings and its role as plant growth promoting microorganisms has been proved.
Highlights
Current production methods in agriculture, such as the inappropriate use of pesticides and chemical fertilizers, create a long list of environmental and health problems [1] [2]
Increased crop production could be achieved through direct mechanisms of plant growth by PGPM (Plant Growth Promoting Microorganisms), such as the production of growth regulators, removing the production of stress hormones, increase of water and nutrients absorption
The aim of this work is the evaluation of plant growth promoting ability of Bacillus amyloliquefaciens Bc2 and Trichoderma harzianum TR under laboratory and field conditions
Summary
Current production methods in agriculture, such as the inappropriate use of pesticides and chemical fertilizers, create a long list of environmental and health problems [1] [2]. Due to a large number of microbial species present in the soil, especially in the rhizosphere, intensive and extensive interactions were established between soil microorganisms and various other soil organisms, including plant roots, and the plants growth stimulation by rhizospheric microorganisms is well established [6]. A plethora of PGPM has been studied including Rhizobium, Frankia, TS, Klebsiella, Clostridium, Nostoc, Anabaena, Bacillus megaterium, Penicillium sp., and it was reported that Sclerocystis sp., Glomus sp., Trichoderma harzianum and Trichoderma viride can improve the growth and yield of various agricultural crops. PGPMs such as Beauveria bassiana, Pseudomonas fluorescens, Serratia entomophila, Pseudomonas aureofaciens, Trichoderma sp. and Streptomyces sp. have biocontrol properties against various pests and diseases [7]
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