1. Adak A, Prasanna R, Babu S, Bidyarani N, Verma S, Pal M, Shivay YS, Nain L (2016) Micronutrient enrichment mediated by plant-microbe interactions and rice cultivation practices. J Plant Nutr 39:1216–1232
2. Agritex (2011) Agritex horticulture management handbook volume 1. Causeway Harare, Zimbabwe
3. Anjanappa M, Venkatesh J, Kumara BS (2012) Influence of organic, inorganic and bio fertilizers on flowering, yield and yield attributes of cucumber (cv. Hassan Local) in open field condition. Karnataka J Agric Sci 25:493–497
4. Antoun H, Pre´vost D (2005) Ecology of plant growth promoting rhizobacteria. In: Siddiqui ZA (ed) PGPR: biocontrol and biofertilization. Springer, Dordrecht, pp 1–38
5. Arnon DI (1949) Copper enzymes in isolated chloroplasts, polyphenol oxidase in Beta vulgaris. Plant Physiol 24:1–15