Plant Growth Promontory Effect on Cow Pea (Vigna unguiculata L.) Using Coir Pith Aqueous Extract Formulation of Cyanobacterium phormidium

摘要

This study describes the effect of a coir pith immobilized formulation of the cyanobacterium Phormidium and its aqueous extract on the germination and growth of cowpea. Evaluation of the various concentrations of the aqueous extract obtained from a 30day old immobilized culture of the cyanobacterium revealed that a 5% aqueous extract significantly improved the germination of cow pea seeds under in vitro conditions. The basal application of the immobilized cyanobacterial formulation when combined with a foliar spray of the aqueous extract at 5 % concentration significantly increased the seed germination, plant height, plant weight, number of flowers, root nodules and biomass, over control. This treatment also significantly increased nodulation and plant growth on cowpea. The extracellular organic/bioactive compounds produced by the cyanobacterium are proposed to play a positive role in plant growth and establishment. In the present study showed on the basal and foliar application of cyanobacteria Phormidium sp-BDU5 + coir waste increased morphological and yield.