Effects of Seed- And Soil-Applied Rhizobium Japonicum Inoculants on Soybeans in Ontario

Abstract

. 1980. Effects of seed-and soil-applied Rhizobium japonicum inoculants on soybeans in Ontario. Can. J. Plant Soybeans (Glycine max (L.) Merrill), inoculated with 1.75 kg/ha of seed-applied inoculant (Rhizobium japonicum (Kirchner) Buchanan) or 40 kg/ha of granular, soil-applied inoculant, were grown in 1976 and 19'77 , along with uninoculated control plots, in fields planted to soybeans for the first time. Control plots averaged 2.1 tlha, compared to 2.6 tlha for the seed-applied inoculant and 3.1 t/ha for the granular inoculant treatment. However, neither inoculant treatment increased yields over the uninoculated controls on land where soybeans had been grown before. In 1978, two commercial granular inoculants and one seed-applied inoculant were treated at various rates at three sites on new soybean land. Granular inoculants caused consistently higher yields than the seed-applied inoculant. Seed yields increased linearly with rates of granular inoculant which were llt, rlz, lla and I times the manufacturers' recommended rates for soybeans grown in l8-cm rows. However, above the lowest rate, the value of the added yield was only equal to the cost of the extra inoculant. Thus, in the narrow-row soybean cultural system necessary to maximize yields in short-season areas, the manufacturers' recommended rates of granular inoculant were higher than necessary for maximum economic return.

Fall vs. spring rhizobial inoculation of chickpea

“…Seed yields in all years were not different between the SG and SL inoculants, but yields for the SP were higher than (Bezdicek et al 1978;Muldoon et al 1980) and faba bean (Vicia faba L.) (Dean and Clark 1977). We cannot explain the relatively low yield for the SG inoculant because the same chickpea cultivar and mesorhizobial strains were used with success in other field experiments in which SG treatments typically were superior or as good as all other treatments (KyeiBoahen et al 2002a).…”

Inoculant formulation and fertilizer nitrogen effects on field pea: Nodulation, N2 fixation and nitrogen partitioning

“…In Canada, this has also been demonstrated in alfalfa , faba beans (Dean and Clark 1977) and soybean (Muldoon et al 1980). Hynes et al (1995) found no significant differences in pea nodulation and grain yields between liquid and peat seed inoculation, but soil inoculation was not investigated.…”

Manipulation of rhizobia microflora for improving legume productivity and soil fertility: A critical assessment

“…These methods are often better and never worse than conventional seed inoculation for initiating nodulation and N2 fixation (e.g. Brockwell et al, 1980;Chamber, 1983;Danso et al, 1990a;Hale, 1981;Jensen, 1987;Muldoon et al, 1980;Rice and Olsen, 1992). Solid inoculant may be introduced into the seed bed through an insecticide attachment to the seed drill.…”