Absorption, Distribution, and Metabolism of Linuron in Corn, Soybean, and Crabgrass

Nashed, Ruth Bruson; Ilnicki, R. D.

doi:10.1017/s0043174500077274

Cited by 23 publications

(9 citation statements)

References 9 publications

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“…No effort was made in this study to determine what portion of the 14C was present as the parent molecule or what was present as metabolites. Except for 14C-atrazine metabolism by corn (18), available data indicate that little metabolism of the 14C-atrazine (18), 14C-linuron (6,14), and 14C-trifluralin (4) occurs in 4 hr.…”

Section: Weedmentioning

confidence: 99%

“…INTRODUCTION N UM EROUS investigations have provided abundant data on the competitive ability of weeds. Considerable weed competition research in crop species has dealt with weeds and their influence on cereal grains (2,8,11,14,16), flax (Linum usitatissimum L.) (1,3,16), and sorghum (Sorghum bicolor (L.) Moench) (20). The critical period of weed competition has been a common objective in many weed-crop competition studies (6,7,9,10,12,13,17).…”

Section: Weedmentioning

confidence: 99%

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Effect of Temperature on Phytotoxicity and Root Uptake of Several Herbicides

Penner

1971

Weed sci.

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The phytotoxicity of 3-(3,4-dichlorophenyl)-1-methoxy-1-methylurea (linuron) to corn (Zea maysL.) and soybean (Glycine max(L.) Merr.) seedlings and 2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine (atrazine) to soybean seedlings increased with increasing temperature from 20 to 30 C. The phytotoxicity of α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine (trifluralin) did not change significantly between 20 and 30 C. Corn and soybean plants grown at 30 C translocated more14C from14C-atrazine and soybeans more14C from14C-linuron to the shoots during the 4-hr root uptake treatment period than plants grown at 20 C. There was less accumulation of14C from14C-atrazine in soybean roots and14C-linuron and14C-trifluralin in the roots of corn and soybean plants grown at 30 C compared to those grown at 20 C. Comparison of data at 30 C and 20 C during the 4-hr root uptake treatment period showed enhanced root to shoot movement of14C from14C-atrazine in corn and from14C-linuron in soybean at the higher uptake treatment temperature indicating a possible relationship between increased herbicide transport to the shoot at high temperature and increased phytotoxicity.

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Section: Weedmentioning

confidence: 99%

Section: Weedmentioning

confidence: 99%

Effect of Temperature on Phytotoxicity and Root Uptake of Several Herbicides

Penner

1971

Weed sci.

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“…How ever, this complex has not been identified. The sorption of phenylurea to plant protein was also reported by Nashed et al (11,12). The presence of glucosidic conjugates of N-hydroxy methyl intermediates formed during JV-dealkylation was con firmed independently by Geissbuhler (7) and Frear and Swanson 5 .…”

Section: Introudctionmentioning

confidence: 60%

Diuron Metabolism in Two Sugarcane(Saccharum officinarum)Cultivars

1978

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The uptake, distribution, and metabolism of diuron [3-(3,4-dichlorophenyl)-1,1-dimethylurea] by sugarcane(Saccharum officinarumL.) cultivars ‘PR980’ and ‘PR1048’ were determined 3 and 10 days after root treatment with 18.4 μM14C-ring-labeled diuron. Uptake and distribution did not account for the differential tolerance of the two cultivars to diuron. Concentration of unmetabolized diuron was higher in the shoot and root of susceptible cultivar PR1048 than in tolerant cultivar PR980 at 3 and 10 days after treatment. The predominant metabolic pathway for diuron metabolism in both susceptible and tolerant sugarcane cultivars appeared to be the formation of mono-methyl diuron and its conjugation. The metabolic process was more rapid in PR980 than PR1048, apparently accounting for the tolerance of PR980.

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“…INTRODUCTION Previous experiments have shown that plant uptake of triazine and urea herbicides from both nutrient solution and soil can be related to the concentration of herbicide in solution and the amount of water transpired by the plant (Nashed & Ilnicki, 1970;Shone & Wood, 1972;Walker, 1972aWalker, , 1973Walker & Featherstone, 1973). In these earlier experiments the whole root system ofthe test species was uniformly exposed to herbicide.…”

mentioning

confidence: 99%

Vertical Distribution of Herbicides in Soil and Their Availability to Plants: Treatment of Different Proportions of the Total Root System

Walker¹

1973

Weed Research

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Summary. Uptake of atrazine and linuron by wheat seedlings was measured from different initial distributions of herbicide in the soil. Uptake of both compounds was proportional to the fraction of the total root system exposed to herbicide‐treated soil. It was calculated that under the conditions of the experiments, this factor would offset the reduction in concentration of herbicide in the soil following incorporation of 1 kg/ha to 3, 6 or 9 cm, so that after the same time, the concentrations of herbicide in the plants in the different treatments would be similar. La distribution verticale des herbicides dans le sol et leur disponibilité pour tes plantes: traitement de différentes fractions de l'ensemble du système racinaire total

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Absorption, Distribution, and Metabolism of Linuron in Corn, Soybean, and Crabgrass

Cited by 23 publications

References 9 publications

Effect of Temperature on Phytotoxicity and Root Uptake of Several Herbicides

Effect of Temperature on Phytotoxicity and Root Uptake of Several Herbicides

Diuron Metabolism in Two Sugarcane(Saccharum officinarum)Cultivars

Vertical Distribution of Herbicides in Soil and Their Availability to Plants: Treatment of Different Proportions of the Total Root System

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