Soil Organic Matter, Moisture, and Temperature: Effect on Wild Oats Control With Trifluralin

Moyer, J. R.

doi:10.4141/cjps79-118

Cited by 14 publications

(9 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The characteristics of the soil in which the experiments were carried out (high organic matter and clay content), may have been responsible for the mild effect herbicides had on nodulation through adsorption phenomena mediated by the soil colloids. Besides that, this type of soil exhibited a developed microbial biomass whose metabolism could enzimatically degrade the herbicides, causing a dilution effect on the applied doses (Dunigan et al, 1972;Moyer, 1979;Bollich et al, 1985).…”

Section: Resultsmentioning

confidence: 99%

Effect of soil interacting herbicides on soybean nodulation in Balcarce, Argentina

Gonzalez

Eyherabide

Barcelonna

et al. 1999

Pesq. agropec. bras.

View full text Add to dashboard Cite

-Two trials were performed in Balcarce, Argentina (37° 45' LS; 58° 18' LW) during 1993-94, to assess the effect of eight herbicides applied individually or in tank mixtures, on nodule number, nodule dry weight, seed yield and N percent in seed in soybean Asgrow 3205, inoculated with Bradyrhizobium japonicum CB 1809. Individual herbicides and doses in kg ha -1 of a.i. were metribuzin (0.48), acetochlor (0.90), metolachlor (1), flumioxazin (0.075), trifluralin (0.96), imazaquin (0.20), imazethapyr (0.10) and chlorimuron ethyl (0.0125). The mixtures were metribuzin+acetochlor (0.48+0.9), flumioxazin+acetochlor (0.075+0.9), imazaquin+acetochlor (0.2+0.9), metribuzin+metolachlor (0.48+1.92), and flumioxazin+ metolachlor (0.075+1.92). A control treatment without herbicides was included. Both trials were laid out as randomized complete blocks with four replicates, on a loam illitic thermic petrocalcic Paleudoll, 5.7% organic matter (OM), 25% clay, 30.4 cmol kg -1 CEC. Nodules were sampled at V2 (second node), V6 (sixth node) and R5 (beginning seed) growth stages. Herbicides did not significantly affect the beginning of nodulation or nodule number and mass at R5, not either grain yield or N accumulation. This indicates lack of interference between soil interacting herbicides and N fixation in the high organic matter, loam soils of SE Buenos Aires province, even though a tendency in less number and dry weight of nodules was evident at the two latter growth stages. (0,20), imazathapyr (0,10) e chlorimuron ethyl (0,0125). As misturas foram metribuzin+acetochlor (0,48+0,9), flumioxazin+acetochlor (0,075+0,9), imazaquin+acetochlor (0,2+0,9), metribuzin+metolachlor (0,48+1,92), e flumioxazin+metolachlor (0,075+1,92). Incluiu-se um controle sem herbicidas. Os experimentos foram conduzidos no delineamento em blocos completos ao acaso, com quatro repetições. Usou-se um solo Paleudol petrocálcico, franco, ilítico, térmico, com matéria orgânica 5,7%, argila 25%, e CTC 30,4 cmol kg -1 . Os nódulos foram amostrados em V2 (segundo nó), V6 (sexto nó) e R5 (começo de semente). Os herbicidas não alteraram o início da nodulação nem o número ou peso dos nódulos em R5, e também não houve efeito no rendimento de grãos, o que sugere que não há interferência entre eles e fixação de N nos solos francos com alto conteúdo de matéria orgânica do sudeste de Buenos Aires. Por outro lado, evidenciou-se uma tendência à formação de menos nódulos e menor peso dos nódulos, nos dois últimos níveis de crescimento.Termos para indexação: Bradyrhizobium japonicum, lesões por herbicidas, fixação de N, rendimento.

show abstract

Section: Resultsmentioning

confidence: 99%

Effect of soil interacting herbicides on soybean nodulation in Balcarce, Argentina

Gonzalez

Eyherabide

Barcelonna

et al. 1999

Pesq. agropec. bras.

View full text Add to dashboard Cite

show abstract

“…The first represents the relationship between the herbicide-induced inhibition of chlorophyll production by green algae (chorella) as a function of adsorption coefficients measured in various soils (144). The second shows the influence of soil organic matter content on the dose rate of trifluralin required to produce 90% reduction in fresh weight of wild oat plants (156).…”

Section: Influence Of Adsorption On Transportmentioning

confidence: 99%

Adsorption of Organic Chemicals in Soils

Calvet¹

1989

Environmental Health Perspectives

View full text Add to dashboard Cite

This paper presents a review on adsorption of organic chemicals on soils sediments and their constituents. The first part of this review deals with adsorption from gas and liquid phases and gives a discussion on the physical meaning of the shape of adsorption isotherms. Results show that no general rules can be proposed to describe univocally the relation between the shape of isotherms and the nature of adsorbateadsorbent system. Kinetics of adsorption is discussed through the description of various models.Theoretical developments exist both for the thermodynamics and the kinetics of adsorption, but there is a strong need for experimental results. Possible adsorption mechanisms are ion exchange, interaction with metallic cations, hydrogen bonds, charge transfers, and London-van der Waals dispersion forces/ hydrophobic effect. However, direct proofs of a given mechanism are rare. Several factors influence adsorption behavior. Electronic structure of adsorbed molecules, properties of adsorbents, and characteristics of the liquid phase are discussed in relation to adsorption. Such properties as water solubility, organic carbon content of adsorbing materials, and the composition of the liquid phase are particularly important. Evaluation of adsorption can be obtained through either laboratory measurements or use of several correlations. Adsorption measurements must be interpreted, taking into account treatment of adsorbent materials, experimental conditions, and secondary phenomena such as degradations. Correlations between adsorption coefficients and water-octanol partition coefficient or water solubility are numerous. They may be useful tools for prediction purposes. Relations with transport, bioavailability, and degradation are described.

show abstract

“…Alfalfa and field peas were also occasionally injured at the higher rates of ethalfluralin and trifluralin, indicating that these herbicides can be used on crops that do not tolerate applications of twice the recommended rate. The phytotoxicity of dinitroaniline herbicides is highly inversely correlated with soil organic matter content (Moyer 1979). Therefore, the injury observed in soil with 2% organic matter may not occur in soils with higher organic matter content.…”

mentioning

confidence: 95%

Tolerance of annual forage legumes to herbicides in Alberta

Fraser¹,

Moyer²,

Topinka³

et al. 2003

Can. J. Plant Sci.

Self Cite

View full text Add to dashboard Cite

Tolerance of annual forage legumes to herbicides in Alberta. Can. J. Plant. Sci. 83: 649-652. The effects of ethalfluralin, trifluralin, and imazethapyr herbicides were assessed on stand density, visual injury and dry matter yield of annual forage legumes under irrigation. Results indicate that recommended rates of either ethalfluralin or imazethapyr have potential for weed control in alfalfa, berseem clover, balansa clover, fenugreek, pea, and vetches.

show abstract

Soil Organic Matter, Moisture, and Temperature: Effect on Wild Oats Control With Trifluralin

Cited by 14 publications

References 8 publications

Effect of soil interacting herbicides on soybean nodulation in Balcarce, Argentina

Effect of soil interacting herbicides on soybean nodulation in Balcarce, Argentina

Adsorption of Organic Chemicals in Soils

Tolerance of annual forage legumes to herbicides in Alberta

Contact Info

Product

Resources

About