Building Bioeconomy in Agriculture: Harnessing Soil Microbes for Sustaining Ecosystem Services
Abstract
Agriculture in Indiahas been heavily dependent on the use of inorganic fertilizers and pesticides for the past 4 to 5 decades. Such practices has had negative environmental consequences in terms of reduced ability of the agro-ecosystems in regulating (maintenance of hydrological services, water quality, carbon sequestration) and supporting (soil microbial diversity, soil structure and fertility, nutrient cycling, biological pest control, pollination) Ecosystem Services (ES). Bioeconomy in agriculture, which stresses on supply of food and agricultural outputs through extraction and use of high quality inputs from renewable resources, gains significance in this context. Use of renewable factors of production reduces agriculture-induced environmental impacts, reduces the yield gaps and strengthens agro-ecosystems ability to regulate and support ES. Organic farming approach that promotes bioeconomy in agriculture is highly dependent on diverse soil microflora consisting of beneficial microbes. They facilitate ecological services such as nutrient cycling, disease control, drought tolerance, degradation of organic matter, water lifting etc. Biofertilizers and bio-pesticides are the biological products necessary to augment the soil microflora, in this way they are linked to building bioeconomy in agriculture. The renewable use of bio resources called bio-inputs henceforth primarily offers a mean to reduce the dependence on chemical inputs and sustain the provision of valuable ES. These bio-inputs play an integral role in maintaining soil quality nutrient fixation, mobilization and solubilisation processes, induces abiotic and biotic stress tolerance and manages pest and diseases through maintaining a healthy prey-predator balance in environment. Microbial based bio products are an important input for organic and sustainable agriculture production systems as it works on the same principles as bio-economy and could be considered as an important pathway for promoting bio-economy in agriculture. The recent progress in research and development of microbial consortium and microbiome approaches adds value to the use of bio-inputs in agriculture. This paper is an attempt to detail the processes through which the principles of bioeconomy in the soil ecosystem could be effectively harnessed to achieve productivity in perpetuity by the use of renewable microbial bio resources.
Keywords
Soil ecosystems Ecosystem services Bioeconomy Sustainable production and bio-inputsReferences
- Adesemoye AO, Kloepper JW (2009) Plant-microbes interactions in enhanced fertilizer-use efficiency. Appl Microbiol Biotechnol 85:1–12CrossRefGoogle Scholar
- Adesemoye AO, Torbert HA, Kloepper JW (2008) Enhanced plant nutrient use efficiency with PGPR and AMF in an integrated nutrient management system. Can J Microbiol 54:876–886CrossRefGoogle Scholar
- Adesemoye AO, Torbert HA, Kloepper JW (2009) Plant growth-promoting rhizobacteria allow reduced application rates of chemical fertilizers. Microb Ecol 58:921–929CrossRefGoogle Scholar
- Agricultural and Processed Food Products Export Development Authority (APEDA) (2017) National Programme for Organic Production, Present status in India. Retrieved on 20th May 2017 from www.apeda.com/organic.htm
- Anuroopa N, Bagyaraj DJ (2017) Inoculation with selected microbial consortia enhanced the growth and yield of Withania somnifera under polyhouse conditions. Imperial J Interdisc Res 3(2):127–133Google Scholar
- Araújo ASF, Santos VB, Monteiro RTR (2008) Responses of soil microbial biomass and activity for practices of organic and conventional farming systems in Piauí state, Brazil. Eur J Soil Biol 44:225–230CrossRefGoogle Scholar
- Avis T, Gravel V, Antoun H, Tweddell R (2008) Multifaceted beneficial effects of rhizosphere microorganisms on plant health and productivity. Soil Biol Biochem 40(7):1733–1740CrossRefGoogle Scholar
- Bagyaraj DJ, Sharma MP, Maiti D (2015) Phosphorus nutrition of crops through arbuscular mycorrhizal fungi. Curr Sci 108:1288–1293Google Scholar
- Bais HP, Weir TL, Perry LG, Gilroy S, Vivanco JM (2006) The role of root exudates in rhizosphere interactions with plants and other organisms. Annu Rev Plant Biol 57:233–266CrossRefGoogle Scholar
- Barrios E (2007) Soil biota, ecosystem services and land productivity. Ecol Econ 64:269–285CrossRefGoogle Scholar
- Bashan Y, de-Bashan LE, Prabhu SR, Hernandez JP (2014) Advances in plant growth-promoting bacterialinoculant technology: formulations and practical perspectives (1998–2013). Plant Soil 378:1–33CrossRefGoogle Scholar
- Berendsen RL, Pieterse CM, Bakker PA (2012) The rhizosphere microbiome and plant health. Trends Plant Sci 17(8):478–486CrossRefGoogle Scholar
- Bhattacharjee R, Dey U (2014) Biofertilizer, a way towards organic agriculture: a review. Afr J Microbiol Res 8:2332–2343CrossRefGoogle Scholar
- Bhardwaj D, Ansari MW, Sahoo RK, Tuteja N (2014) Biofertilizers function as key player in sustainable agriculture by improving soil fertility, plant tolerance and crop productivity. Microb Cell Fact 13:66Google Scholar
- Biotechnology Industry Research Assistance Council (BIRAC) (2016) Make in India for bio-tech-the way forward, biotechnology industry research assistance council, department of biotechnology, Government of India, New Delhi: BIRACGoogle Scholar
- Björklund Johanna, Limburg Karin E, Rydberg Torbjörn (1999) Impact of production intensity on the ability of the agricultural landscape to generate ecosystem services: an example from Sweden. Ecol Econ 29(2):269–291CrossRefGoogle Scholar
- Briat JF, Dubos C, Gaymard F (2014) Iron nutrition, biomass production, and plant product quality. Trends Plant Sci 20:33–40CrossRefGoogle Scholar
- Burgmann H, Widmer F, Von Sigler W, Zeyer J (2004) New molecular screening tools for analysis of free-living diazotrophs in soil. Appl Environ Microbiol 70:240–247CrossRefGoogle Scholar
- Burril Media (2014) Accelerating growth: forging india’s bioeconomy, biotechnology industry organization and association of biotechnology led enterprises. Retrieved on 2 May 2017 from https://www.bio.org/sites/default/files/files/Burrill_AcceleratingGrowth_India-6-9-final.pdf
- CEN (2011) Biobased products—overview of standards (CEN/TR 16208:2011). European Committee for Standardisation (CEN)Google Scholar
- Chaparro C, Sabotin F (2012) Methods and software in NGS for TE analysis. In: Clifton NJ (eds) Methods in molecular biology vol 859. Springer, pp 105–14Google Scholar
- Chen YP, Rekha PD, Arun AB, Shen FT, Lai WA, Young CC (2006) Phosphate solubilizing bacteria from subtropical soil and their tricalcium phosphate solubilizing abilities. Appl Soil Ecol 34:33–41Google Scholar
- Choudhary DK (2011) Plant growth-promotion (PGP) activities and molecular characterization of rhizobacterial strains isolated from soybean (Glycine max L. Merril) plants against charcoal rot pathogen, Macrophomina phaseolina. Biotechnol Lett 33(11):2287–2295Google Scholar
- Copping LG (2009) Manual of biocontrol agents, 4th edn. British Crop Protection Council, Alton, p 1350Google Scholar
- Costanza R, d’Arge R, De Groot R, Farber S, Grasso M et al (1997) The value of the world’s ecosystem services and natural capital. Nature 387:253–260CrossRefGoogle Scholar
- Cummings SP (2009) The application of plant growth promoting rhizobacteria (PGPR) in low input and organic cultivation of graminaceous crops; potential and problems. Environ Biotechnol 5:43–50Google Scholar
- Daily GC, Matson PA, Vitousek PM (1997) Ecosystem services supplied by soil. In: Daily GC (ed) Nature services: societal dependence on natural ecosystems. Island Press, Washington DC, pp 113–132Google Scholar
- Dale H Virginia, Polasky Stephen (2007) Measures of the effects of agricultural practices on ecosystem services. Ecol Econ 64:286–296CrossRefGoogle Scholar
- Deepak B, Wahid AM, Sahoo RK, Tuteja N (2014) Biofertilizers function as key player in sustainable agriculture by improving soil fertility, plant tolerance and crop productivity. Microb Cell Fact 13:66CrossRefGoogle Scholar
- Dey R, Pal K, Bhatt D, Chauhan S (2004) Growth promotion and yield enhancement of peanut (Arachis hypogaea L.) by application of plant growth-promoting rhizobacteria. Microbiol Res 159:371–394CrossRefGoogle Scholar
- Doran JW, Zeiss MR (2000) Soil health and sustainability: managing the biotic component of soil quality. Appl Soil Ecol 15:3–11CrossRefGoogle Scholar
- Dragicevic V, Oljaca S, Stojiljkovic M, Simic M, Dolijanovic Z, Kravic N (2015) Effect of the maize–soybean intercropping system on the potential bioavailability of magnesium, iron and zinc. Crop and Pasture Science 66:1118–1127CrossRefGoogle Scholar
- European Commission (EC) (2012) EU bioeconomy strategy and action plan- innovating for sustainable growth. Retrieved 14th Sept 2016, from http://ec.europa.eu/research/bioeconomy/pdf/bioeconomycommunicationstrategy_b5_brochure_web.pdf
- FAO (2002) Organic agriculture, environment and food security. In: Nadia ELS, Caroline H (eds) Environment and natural resources series 4. Retrieved on 28th May 2017 from http://www.fao.org/DOCREP/005/Y4137E/Y4137E00.htm
- FAO (2005) The fertilizer use by crops in India, Rome. Retrieved 10th May 2017 from http://www.fao.org/docrep/009/a0257e/A0257E00.htm#TOC. United Nations Food and Agriculture Organization, Rome
- Feng G, Zhang FS, Xl Li, Tian CY, Tang C, Rengel Z (2002) Improved tolerance of maize plants to salt stress by arbuscular mycorrhiza is related to higher accumulation of soluble sugars in roots. Mycorrhiza 12:185–190CrossRefGoogle Scholar
- FiBL (2000) Organic farming enhances soil fertility ad biodiversity: results from a 21 year old field trial. Research Institute of Organic Farming (FiBL), Frick, SwitzerlandGoogle Scholar
- Franche C, Lindstrom K, Elmerich C (2009) Nitrogen fixing bacteria associated with leguminous and non-leguminous plants. Plant Soil 321:35–59CrossRefGoogle Scholar
- Garg N, Manchanda G (2008) Effect of arbuscular mycorrhizal inoculation on salt-induced nodule senescence in Cajanus cajan (pigeonpea). J Plant Growth Regul 27(2):115CrossRefGoogle Scholar
- Gomiero T, Paoletti MG, Pimentel D (2008) Energy and environmental issues in organic and conventional agriculture. Crit Rev Plant Sci 27:239–254CrossRefGoogle Scholar
- Gomiero T, Pimentel D, Paoletti MG (2011) Is there a need for a more sustainable agriculture? Crit Rev Plant Sci 30(1–2):7–19Google Scholar
- Gopal M, Gupta A, Thomas GV (2013) Bespoke microbiome therapy to manage plant diseases. Front Microbiol 5:15Google Scholar
- Hartmann A, Schmid M, van Tuinen D, Berg G (2009) Plant-driven selection of microbes. Plant Soil 321:235–257CrossRefGoogle Scholar
- Hayat R, Safdar Ali S, Amara U, Khalid R, Ahmed I (2010) Soil beneficial bacteria and their role in plant growth promotion: a review. Ann Microbiol 60:579–598CrossRefGoogle Scholar
- IFOAM (2005) The IFOAM norms for organic production and processing. International Federatoin of Organic Agriculture Movements, BonnGoogle Scholar
- Iguchi H, Yurimoto H, Sakai Y (2015) Interactions of methylotrophs with plants and other heterotrophic bacteria. Microorganisms 3:137–151CrossRefGoogle Scholar
- Indira Devi P (2007) Pesticide use in the rice bowl of Kerala: health costs and policy options. SANDEE Working Paper No.20-07, South Asian Network for Development and Environmental Economics, NepalGoogle Scholar
- Jegan S, Baskaran V, Ganga V, Kathiravan R, Prabavathy VR (2016) Bioinoculants a tool for the alleviation of plant stress and soil fertility. In: Bagyaraj DJ, Jamaluddin (eds) Microbes for plant stress management and restoration of degraded land. New India Publishing Agency, New Delhi, India, pp 25–53Google Scholar
- Kachhawa D (2017) Microorganisms as bio-pesticides. J Entomol Zool Stud 5(3):468–473Google Scholar
- Kahindi J, Woomer P, George T, de Souza Moreira F, Karanja N, Giller K (1997) Agricultural intensification, soil biodiversity and ecosystem function in the tropics: the role of nitrogen-fixing bacteria. Appl Soil Ecol 6:55–76CrossRefGoogle Scholar
- Kawalekkar JS (2013) Role of biofertilisers and bio-pesticides for sustainable agriculture. J Bio Innov 2(3):73–78Google Scholar
- Kolb S, Stacheter A (2013) Prerequisites for amplicon pyrosequencing of microbial methanol utilizers in the environment. Front Microbiol 4:268CrossRefGoogle Scholar
- Krebs JR, Wilson JD, Bradbury RB, Siriwardena GM (1999) The second silent spring? Nature 400:611–612CrossRefGoogle Scholar
- Krishnan R, Menon RR, Tanaka N, Busse HJ, Krishnamurthi S, Rameshkumar N (2016) Arthrobacter pokkalii sp nov, a novel plant associated Actinobacterium with plant beneficial properties, isolated from saline tolerant Pokkali rice, Kerala, India. PLoS ONE 11:e0150322CrossRefGoogle Scholar
- Kumar M, Tomar RS, Lade, Paul D (2016) Methylotrophic bacteria in sustainable agriculture. World J Microbiol Biotechnol 32:120CrossRefGoogle Scholar
- Kyselkova M, Kopecky J, Frapolli M, Defago G, Sagova-Mareckova M, Grundmann GL et al (2009) Comparison of rhizobacterial community composition in soil suppressive or conducive to tobacco black root rot disease. ISME J 3:1127–1138CrossRefGoogle Scholar
- Larkin RP, Fravel DR (1998) Efficacy of various fungal and bacterial biocontrol organisms for control of Fusarium wilt of tomato. Plant Dis 82:1022–1028CrossRefGoogle Scholar
- Laurent Philippot, Spor. Ayme´, He´nault Catherine, Bru David, Bizouard Florian, Jones Christopher M, Sarr. Amadou, Maron Pierre-Alain (2013) Loss in microbial diversity affects nitrogen cycling in soil. The ISME J 7:1609–1619CrossRefGoogle Scholar
- Leitão A (2016) Bioeconomy: the challenge in the management of natural resources in the 21st century. Open J Soc Sci 4:26–42. Retrieved on 10th May 2017 from http://dx.doi.org/10.4236/jss.2016.411002
- Li J, Zhang D, Yang X, Tong Y (2009) Effects of land use changes on values of ecosystem functions on coastal plain of South Hanghzhou Bay Bank, China. Afr J Agric Res 4(5):542–547Google Scholar
- Lynch JM, Whipps JM (1990) Substrate flow in the rhizosphere. Plant Soil 129:1–10CrossRefGoogle Scholar
- Mäder P, FlieBbach A, Dubois D, Gunst L, Fried P, Niggli U (2002) Soil fertility and biodiversity in organic farming. Science 296:1694–1697CrossRefGoogle Scholar
- Malusà E, Vassilev N (2014) A contribution to set a legal framework for biofertilizers. Appl Microbiol Biotechnol 98:6599–6607CrossRefGoogle Scholar
- Manjula M, Gopi G (2016): In search of ecological rationale for ‘The Kerala Conservation of Paddy Land and Wetland Act’. SANDEE Final Technical Report 64, South Asian Network for Development and Environmental Economics, NepalGoogle Scholar
- Martínez-Viveros O, Jorquera M, Crowley D, Gajardo G, Mora M (2010) Mechanisms and practical considerations involved in plant growth promotion by rhizobacteria. J Soil Sci Plant Nutr 10:293–319CrossRefGoogle Scholar
- Matson PA, Parton WJ, Power AG, Swift MJ (1997) Agricultural intensification and ecosystem properties. Science 277(5325):504–509CrossRefGoogle Scholar
- MEA (Millennium Ecosystem Assessment) (2005) Ecosystems and human well-being: a framework for assessment. Island Press, Washington DCGoogle Scholar
- Meena KK, Kumar M, Kalyuzhnaya MG, Yandigeri MS, Singh DP, Saxena AK, Arora DK (2012) Epiphytic pink-pigmented methylotrophic bacteria enhance germination and seedling growth of wheat (Triticum aestivum) by producing phytohormone. Antonie Van Leeuwenhoek 101:777–786CrossRefGoogle Scholar
- Megali L, Glauser G, Rasmann S (2013) Fertilization with beneficial microorganisms decreases tomato defenses against insect pests. Agron Sustain Dev. https://doi.org/10.1007/s13593-013-0187-0
- Melero S, Ruiz Porras JC, Herencia JF, Madejón E (2006) Chemical and biochemical properties in a silty loam soil under conventional and organic management. Soil Tillage Res 90:162–170CrossRefGoogle Scholar
- Mendes R, Kruijt K, de Bruijn I, Dekkers E, van der Voort M, Schneider JHM et al (2011) Deciphering the rhizosphere microbiome for disease-suppressive bacteria. Science 332:1097–1100CrossRefGoogle Scholar
- Miransari M (2011) Interactions between arbuscular mycorrhizal fungi and soil bacteria. Appl Microbiol Biotechnol 89:917–930CrossRefGoogle Scholar
- Moe LA (2013) Amino acids in the rhizosphere: from plants to microbes. Am J Bot 100:1692–1705CrossRefGoogle Scholar
- Nadeem SM, Zahair ZA, Naveed M, Asghar HN, Asghar (2010) Rhizobacteria capable of producing ACC-deaminase may mitigate salt stress in wheat. Soil Sci Soc Am J 74:533–542CrossRefGoogle Scholar
- Nellemann C, MacDevette M, Manders T, Eickhout B, Svihus B, Prins AG, Kaltenborn BP (eds) (2009) The environmental food crisis—The environment’s role in averting future food crises. A UNEP rapid response assessment. United Nations Environment Programme, GRID—Arendal. Retrieved on 24th April 2017 from http://old.unep-wcmc.org/medialibrary/2010/09/07/51d38855/FoodCrisis.pdf, ISBN: 978-82-7701-054-0
- OECD (2009) The Bioeconomy to 2030 designing a policy agenda: main findings and policy conclusions. Retrieved on 20th May 2017 from https://www.oecd.org/futures/long-termtechnologicalsocietalchallenges/42837897.pdf
- Organic Farming Research Foundation (OFRP) (2017) Soil microbial interactions and organic farming. Retrieved 25th May 2017 from http://ofrf.org/sites/ofrf.org/files/staff/OFRF.Soil_.brochure.4.16.v4.Web_.pdf
- Owen D, Williams AP, Griffi th GW, Withers PJA (2015) Use of commercial bio-inoculants to increase agricultural production through improved phosphorus acquisition. Appl Soil Ecol 86:41–54CrossRefGoogle Scholar
- Patil P, Ghag P, Patil S (2013) Use of bio-fertilizers and organic inputs—as LISA technology by farmers of Sangamner. Int J Adv Res Technol 2:28–33Google Scholar
- Paul D, Nair S (2008) Stress adaptations in a plant growth promoting rhizobacterium with increasing salinity in the coastal agricultural soils. J Basic Microbiol 48(5):378–384CrossRefGoogle Scholar
- Pauliyz TC, Ahmad TS, Baker R (1990) Integration of Pythium nunn and Trichoderma harzianum isolate T-95 for the biological control of Pseudomonas cepacia or P. fluorescence to seed. Plant Dis 75:987–992Google Scholar
- Picard C, Bosco M (2008) Genotypic and phenotypic diversity in populations of plant-probiotic Pseudomonas spp. colonizing roots. Naturwissenschaften 95:1–16CrossRefGoogle Scholar
- Postma-Blaauw M, de Goede R, Bloem J, Faber J, Brussaard L (2012) Agriculture intensification and de-intensification differently affect taxonomic diversity of predatory mites, earthworms, enchytraeids, nematodes and bacteria. Appl Soil Ecol 57:39–49CrossRefGoogle Scholar
- Power G Alison (2010) Ecosystem services and agriculture: tradeoffs and synergies. Philos Trans R Soc B 365:2959–2971CrossRefGoogle Scholar
- Raju K, Sekar J, Vaiyapuri Ramalingam P (2016) Salinicola rhizosphaerae sp. nov., isolated from the rhizosphere of the mangrove Avicennia marina L. Int J Syst Evol Microbiol 66:1074–1079CrossRefGoogle Scholar
- Ramesh P, Panwar NR, Singh AB, Ramana S, Yadav SK, Shrivastava R, Subba Rao A (2010) Status of organic farming in India. Curr Sci 98(9):1190–1194Google Scholar
- Raupach GS, Kloepper JW (1998) Mixtures of plant growth-promoting rhizobacteria enhance biological control of multiple cucumber pathogens. Phytopathology 88:1158–1164CrossRefGoogle Scholar
- Reed and Green (2013) How microbes can help feed the world report on American Academy of Microbiology Colloquium. Retrieved on 4th May 2017 from http://academy.asm.org/images/stories/documents/Feed the world.pdf
- Rodrı́guez H, Fraga R (1999) Phosphate solubilizing bacteria and their role in plant growth promotion. Biotechnol Adv 17 (4–5):319–339Google Scholar
- Rodrigues EP, Rodrigues CS, de Oliveira ALM, Baldani VL, Teixeira da Silva JA (2008) Azospirillum amazonense inoculation: effects on growth, yield and N2 fixation of rice (Oryza sativa L.). Plant Soil 302:249–261Google Scholar
- Rosenzweig N, Tiedje JM, Quensen JF, Meng QX, Hao JJJ (2012a) Microbial communities associated with potato common scab-suppressive soil determined by pyrosequencing analyses. Plant Dis 96:718–725CrossRefGoogle Scholar
- Rosenzweig C, Jones JW, Hatfield JL, Mutter CZ, Adiku SGK, Ahmad A, Beletse Y, Gangwar B, Guntuku D, Kihara J, Masikati P, Paramasivan P, Rao KPC, Zubair L (2012b) The agricultural model inter comparison and improvement project (AgMIP): integrated regional assessment projects. In: Hillel D, Rosenzweig C, (eds) Handbook of climate change and agroecosystems: global and regional aspects and implications. ICP Series on climate change impacts, adaptation, and mitigation, vol 2. Imperial College Press, pp 263–280Google Scholar
- Ryan RP, Germaine K, Franks A, Ryan DJ, Dowling DN (2008) Bacterial endophytes: recent developments and applications. FEMS Microbiol Lett 278:1–9CrossRefGoogle Scholar
- Sekar J, Prabavathy VR (2014) Novel Phl-producing genotypes of finger millet rhizosphere associated pseudomonads and assessment of their functional and genetic diversity. FEMS Microbiol Ecol 89:32–46CrossRefGoogle Scholar
- Sekar J, Rengalakshmi R, Prabavathy VR (2016) Microbial consortial products for sustainable agriculture: commercialization and regulatory issues in india. In: Singh HB (eds.) Agriculturally important microorganisms. https://doi.org/10.1007/978-981-10-2576-1_7
- Shanmugam V, Senthil N, Raguchander T, Ramanathan A, Samiyappan R (2002) Interaction of Pseudomonas fluorescens with Rhizobium for their effect on the management of peanut root rot. Phytoparasitica 30:169–176CrossRefGoogle Scholar
- Sharma SB, Sayyed RZ, Trivedi MH, Gobi TA (2013) Phosphate solubilizing microbes: sustainable approach for managing phosphorus deficiency in agricultural soils. Springer Plus 2:587CrossRefGoogle Scholar
- Siddiqui ZA (2006) PGPR: Prospective biocontrol agents of plant pathogens. In: Siddiqui ZA (ed) PGPR: biocontrol and biofertilization. Springer, Netherlands, pp 111–142CrossRefGoogle Scholar
- Singh BK (2017) Creating new business, economic growth and regional prosperity through microbiome-based products in the agriculture industry. Microb Biotechnol 10:224–227CrossRefGoogle Scholar
- Singh BL, Trivedi P (2017) Microbiome and the future for food and Nutrient security. Microb Biotechnol 10(1):50–53CrossRefGoogle Scholar
- Singh JS, Pandey VC, Singh DP (2011) Efficient soil microorganisms: a new dimension for sustainable agriculture and environmental development. Agric Ecosyst Environ 140:339–353CrossRefGoogle Scholar
- Smith SE, Read DJ (1997) Mycorrhizal symbiosis, 2nd edn. Academic Press, LondonGoogle Scholar
- Soesanto L (2012) Biopesticides- the impact to the environment. In: The 5th international seminar of Indonesian society for microbiology (ISISM), vol 2, IndonesiaGoogle Scholar
- Swinton SM, Lupi F, Robertson GP, Lundis DA (2006) Ecosystem services from agriculture: looking beyond the usual suspects. Amer J Agr Econ 88(5):1160–1166CrossRefGoogle Scholar
- Tariq M, Hameed S, Malik KA, Hafeez FY (2007) Plant root associated bacteria for zinc mobilization in rice. Pak J Bot 39:245–253Google Scholar
- Tilak K, Ranganayaki N, Pal K, De R et al (2005) Diversity of plant growth and soil health-supporting bacteria. Curr Sci 89(1):136–150Google Scholar
- Tilman D, Farigione J, Wolff B, D’Antonio C, Dobson et al (2001) Forecasting agriculturally driven global environmental change. Science 292:281–284CrossRefGoogle Scholar
- Timmusk S, Behers L, Muthoni J, Muraya M, Aronsson AC (2017) Perspectives and challenges of microbial application for crop improvement. Front Plant Sci. https://doi.org/10.3389/fpls.2017.00049
- Truu M, Truu J, Ivosk M (2008) Soil microbiological and biochemical properties for assessing the effect of agricultural management practices in Estonian cultivated soils. Eur J Soil Biol 44:231–237CrossRefGoogle Scholar
- UN (2008) Organic agriculture and food security in Africa. In: United Nations conference on trade and development—United Nations environment programme, capacity building task force on trade, environment and development. Retrieved on 16 May 2017 from http://www.unep-unctad.org/cbtf/publications/UNCTAD_DITC_TED_2007_15.pdf
- UN (2013) World population prospects: the 2012 revision. UN Department of Economic and Social Affairs, New YorkGoogle Scholar
- UNCTAD (2006) Trade and environment review. Environmental requirements and market access for developing countries: Developing pro-active approaches and strategies. United Nations Publication, NY. 275Google Scholar
- UNDP (2010) Goal 2- Zero Hunger. Sustainable development goals. Retrieved on 4th April 2017 from http://www.undp.org/content/undp/en/home/sustainable-development-goals/goal-2-zero-hunger.html
- Uren NC (2001) Types, amounts, and possible functions of compounds released into the rhizosphere by soil-grown plants. In: Pinton R, Varanini Z, Nannipieri P (eds.) The rhizosphere—biochemistry and organic substances at the soil-plant interface. Marcel Dekker, Inc, New York, pp 19–40Google Scholar
- van der Heijden MGA, Bardgett RD, Van Straalen NM (2008) The unseen majority: soil microbes as drivers of plant diversity and productivity in terrestrial ecosystems. Ecol Lett 1:296–310CrossRefGoogle Scholar
- Venkatashwarlu B (2008) Role of bio-fertilizers in organic farming: organic farming in rain fed agriculture. Central institute for Dry Land Agriculture, Hyderabad, pp 85–95Google Scholar
- Viswanath G, Jegan S, Baskaran V, Kathiravan R, Prabavathy VR (2015) Diversity and N-acyl-homoserine lactone production by Gammaproteobacteria associated with Avicennia marina rhizosphere of South Indian mangroves. Syst Appl Microbiol 38:340–345CrossRefGoogle Scholar
- Vitousek PM, Naylor R, Crews T, David MB, Drinkwater LE et al (2009) Agriculture. Nutrient imbalances in agricultural development. Science 324:1519–1520CrossRefGoogle Scholar
- Weller DM, Raaijmakers JM, Gardener BB, Thomashow LS (2002) Microbial populations responsible for specific soil suppressiveness to plant pathogens. Annu Rev Phytopathol 40:309–348CrossRefGoogle Scholar
- White PJ, Broadley MR (2009) Biofortification of crops with seven mineral elements often lacking in human diets—iron, zinc, copper, calcium, magnesium, selenium and iodine. New Phytol 49–84Google Scholar
- Willer H, Yuseffi M (eds) (2006) The World of organic agriculture: statistics and emerging trends. IFOAM, BonnGoogle Scholar