Development of cv. BRS Novaera cowpea inoculated with rhizobium recommended for pigeonpea

Abstract

The cultivation of cowpea (Vigna unguiculata) has grown in Brazil, especially in the Cerrado of Mato Grosso, where it is produced in off-season. The association of cowpea plants with rhizobia has provided much of the nitrogen required by this culture. This study aimed at evaluating the development of cowpea inoculated with rhizobia recommended for pigeonpea (Cajanus cajan). The experiment was conducted at the Federal University of Mato Grosso, University Campus Rondonópolis-MT under greenhouse conditions. The experimental design was completely randomized with three treatments and four replications. The treatments were composed by commercial inoculant recommended for pigeonpea (composed by the combination of strains BR2003 and BR2801), nitrogen (without inoculation and application of 50 mg N dm-3) and a control (without inoculation and nitrogen fertilization). Plants height, SPAD index, number of pods, number of grain, number of nodules, length of pods, dry weight of nodules, dry grain, dry weight of shoot and relative efficiency of the strains were analyzed. Cowpea show significant response for inoculation in all variables, with increase in production equal or superior to the treatment with nitrogen fertilizer. These results indicate the inoculant recommended for pigeonpea has potential use for cowpea under the tested conditions.

Nutritional characteristics of marandu grass (Brachiaria brizantha cv. marandu) subjected to inoculation with associative diazotrophic bacteria

“…For Guimarães et al (2011b), upon evaluating the effect of Azospirillum spp. inoculation on the productive characteristics of Brachiaria brizantha cv.…”

Combined Application of Inoculant, Phosphorus and Potassium Enhances Cowpea Yield in Savanna Soils

“…However, the assumption is that the indigenous Bradyrhizobia species are capable of nodulating cowpea due to its promiscuous nature, thereby making inoculation with effective strains unnecessary [16]. Recent studies have however disproved this, as reported in Brazil [17,18], Ghana [1,19]; Mozambique [20]; Nigeria [21] and Tanzania [22]. Inoculating cowpea with effective Bradyrhizobia strain could be beneficial, environmentally safe and reduces N fertilizer application due to improved nodulation and N fixation [19].…”

Effect of rates and sources of soluble phosphorus on the behavior of cowpea plants inoculated with rhizobacteria from soils of the north region of Brazil

“…BNF is shown to be efficient in cowpea and if well nodulated, can achieve high yield levels (Rumjanek et al, 2005). Guimarães et al (2015) reported that cowpea responded significantly to inoculation, with increase in height of plants, number of pods, grain number, number of nodules, length of pods, dry mass of nodules, grain dry mass and dry mass of aerial part which is equal to or greater than the nitrogen fertilization. However, nodulation and BNF are influenced by edaphoclimatic factors that can bring benefits or damages to the process.…”