Organic Matter-Amiben Interaction on Nodulation and Growth of Soybeans

Olumbe, Johnes W. K.; Veatch, Collins

doi:10.1017/s0043174500031489

Cited by 4 publications

(1 citation statement)

References 7 publications

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“…Field nodulation of several legumes has been reduced by herbicides (3, 13,19,22), by insecticides (5, 28), and by fungicides (1, 15,24,26). Herbicide and insecticide rates substantially in excess of recommended field rates were necessary, however, to influence nodulation.…”

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confidence: 99%

Interaction of Selected Pesticides and Rhizobium japonicum in Pure Culture and Under Field Conditions¹

Kapuśta¹,

Rouwenhorts

1973

Agronomy Journal

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Investigations were conducted to determine the influence of selected pesticides on the growth of Rhizobium japonicum Kirch. Buch. in pure culture and in soil. In addition, nodulation and seed yield of inoculated soybeans [Glycine max (L.) Merr. cultivar ‘Wayne’] were studied under field conditions. Commercial formulations of 24 pesticides were screened for bacteriostatic activity on rhizobia using a gradient plate technique. Isopropyl m‐chlorocarbanilate (chlorpropham) and o,o‐diethyl‐s‐[2‐(ethylthio)‐ethyl] phosphorodithioate (disulfoton) were the only pesticides that inhibited growth. In addition to these pesticides, 4‐(methylsulfonyl)‐2,6‐dinitro‐N, N‐dipropylaniline (nitralin) and 1‐napthyl N‐methylcarbamate (carbaryl) were selected for further study to substantiate the laboratory results. Six U. S. Department of Agriculture rhizobia strains were cultured in pesticide‐amended medium 79 and subsequent growth was determined turbidimetrically. Nitralin exhibited little effect on the rhizobia, whereas chlorprophram, disulfoton, and carbaryl evoked a differential strain response. Most probable number determinations of pesticidetreated soil samples indicated that naturalized soil populations of R. japonicum remained unaltered four weeks after pesticide application. Recommended rates of the pesticides studied did not influence soybean nodulation or seed yield.

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mentioning

confidence: 99%

Interaction of Selected Pesticides and Rhizobium japonicum in Pure Culture and Under Field Conditions¹

Kapuśta¹,

Rouwenhorts

1973

Agronomy Journal

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Herbicide effects on the growth and nodulation potential ofRhizobium trifolii withTrifolium subterraneum L.

Eberbach

Douglas

1989

Plant Soil

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A study was made of the effect of the herbicides 2,4-D, amitrole, atrazine, chlorsulfuron, diclofop-methyl, diquat, glyphosate, paraquat and trifluralin on the nodulation of sub-clover (Trifolium subterraneum L. 'Clare'), the growth of R. trifolii TAI in liquid nutrient medium and the ability of herbicide-treated inoculum to successfully nodulate sub-clover plants. As concentrations of amitrole, diclofop-methyl and glyphosate in the rooting environment increased from 0 to 20mgaiL-~, nodulation decreased linearly. The other herbicides at these concentrations caused more severe decreases in nodulation. Growth of R. trifolii TA1 in nutrient broth was significantly retarded by all concentrations of diquat, 2mgaiL ~ of paraquat, 10 mg ai L-E of glyphosate and 2 mg ai L-~ of chlorsulfuron. Other herbicides did not suppress rhizobial growth. Inoculation with TA1 that had been grown in the presence of amitrole, atrazine or glyphosate and then washed free of the herbicide decreased nodulation of sub-clover, indicating that these herbicides may physiologically influence the nodulating potential of certain strains of Rhizobium. The remaining herbicides showed no indications of this effect.

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Growth and nodulation in soybean cultivated on two substrata and treated with five rates of metolachlor

Amarante

Canci

1995

Cienc. Rural

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The effect of metolachlior [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-l-methylethyl) acetamide] at rates of 0.0, 1.5, 3.0, 4.5, and 6.0kg a.i./ha on the growth and nodulation of soybean cv. BR-4 cultivated on two substrata (soil and soil + sand) and inoculated with Bradyrhizobium japonicum (Kirchnea-1896) Jordan 1982, 137 (Denotes that this name has been validly published in the oficial publicadon, Intemational Joumal of Systematic Bacteriology), was studied under greenhouse conditions at Lages, SC, Brazil, in 1992-93. The experimental design was completely randomized with four replicates. The experimental unit was a container with two plants. Fifty-two days after the emergence (at R1 stage - beginning of flowering) the plants were harvested and evaluated for shoot, root, leaf and nodule dry matter, nodule number, and leaf area. The data were submitted to variance analysis and multiple polynomial regression. Increasing rates of metolachlor significantly reduced shoot, leaf and nodule dry matter and leaf area, the data following a linear polynomial regression, while root dry matter and nodule number were not affected. The interaction "rate x substratum" was not significant for all parameters studied. Except for root dry matter and nodule number, soybean growth was significantly reduced more on soil + sand than on soil, probably as a result of a nutritional effect. Visual phytotoxicity was not observed for all treatments.

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Organic Matter-Amiben Interaction on Nodulation and Growth of Soybeans

Cited by 4 publications

References 7 publications

Interaction of Selected Pesticides and Rhizobium japonicum in Pure Culture and Under Field Conditions¹

Interaction of Selected Pesticides and Rhizobium japonicum in Pure Culture and Under Field Conditions¹

Herbicide effects on the growth and nodulation potential ofRhizobium trifolii withTrifolium subterraneum L.

Growth and nodulation in soybean cultivated on two substrata and treated with five rates of metolachlor

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Organic Matter-Amiben Interaction on Nodulation and Growth of Soybeans

Cited by 4 publications

References 7 publications

Interaction of Selected Pesticides and Rhizobium japonicum in Pure Culture and Under Field Conditions1

Interaction of Selected Pesticides and Rhizobium japonicum in Pure Culture and Under Field Conditions1

Herbicide effects on the growth and nodulation potential ofRhizobium trifolii withTrifolium subterraneum L.

Growth and nodulation in soybean cultivated on two substrata and treated with five rates of metolachlor

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Interaction of Selected Pesticides and Rhizobium japonicum in Pure Culture and Under Field Conditions¹

Interaction of Selected Pesticides and Rhizobium japonicum in Pure Culture and Under Field Conditions¹