Effects of watering frequency, shade and glyphosate application on Paspalum conjugatum Berg (sour grass)

Sahid, Ismail; Ibrahim, Razi; Kadri, S.F.

doi:10.1016/0261-2194(95)00083-6

Cited by 9 publications

(5 citation statements)

References 9 publications

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“…Results obtained by Sahid et al, 1996;Adkins et al, 1998;Tworkoski et al, 1998;ChaoXian et al, 1999;Vouzounis and Americanos, 1992;Yadav et al, 1993;and 1995, are in great support with our findings.…”

Section: Weed Control Efficiencysupporting

confidence: 89%

“…The different irrigation frequency treatments interacted mutually with the different herbicidal applications, yielding highly significant performances, for weed density, fresh and dry weights, in both seasons (Table 4 and Figure 3). Data illustrated on Figure 3, evidently show that, subsub-plots lefted as controls or those treated with Pendimethalin and irrigated every 2 or 4 days, resulted in the greatest weed population density, fresh and dry weights, in Sahid et al, 1996;Adkins et al, 1998;and Tworkoski et al, 1998, reported that glyphosate, in different rates, was immensely effective in reducing weed density, fresh weight and accumulated dry biomass, under highly frequent irrigations, and noticeably less or not effective under dry or stress conditions. However, concerning Pendimethalin efficacy and behavior, Vouzounis and Americanos, 1992, concluded that, when soil moisture content was reduced from 15 % to only 2 %, the rate of Pendimethalin degradation was significantly retarded.…”

Section: Weed Density Fresh and Dry Weightsmentioning

confidence: 97%

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WEED CONTROL IN FIELD GROWN TUBEROSES (Polianthes tuberosa, L. .) CV. ‘DOUBLE’, IN THE WESTERN REGION ARID ZONE OF SAUDI ARABIA: B. MUTUAL INTERACTIVE EFFECTS OF IRRIGATION FREQUENCIES, MANUAL HAND WEEDING, AND HERBICIDES ON WEED POPULATION DENSITY, WEED GROWTH PERFORMANCES AND TUBEROSE CUT FLOWER YIELD

2007

AJAS

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A Split-Split-Plot field investigation, with four replicates, in Complete Randomized Block Design, was performed to confront weed competition problems, in field grown tuberoses, under the Saudi Arabian Western Region Arid Zone environmental conditions. Integrated weed management practices, under different irrigation frequency regimes, yielded highly significant two and three way interactions, during the 2001/02 and 2002/03 growing seasons.

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Section: Weed Control Efficiencysupporting

confidence: 89%

Section: Weed Density Fresh and Dry Weightsmentioning

confidence: 97%

WEED CONTROL IN FIELD GROWN TUBEROSES (Polianthes tuberosa, L. .) CV. ‘DOUBLE’, IN THE WESTERN REGION ARID ZONE OF SAUDI ARABIA: B. MUTUAL INTERACTIVE EFFECTS OF IRRIGATION FREQUENCIES, MANUAL HAND WEEDING, AND HERBICIDES ON WEED POPULATION DENSITY, WEED GROWTH PERFORMANCES AND TUBEROSE CUT FLOWER YIELD

2007

AJAS

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“…Sourgrass (referred to as 'Hilograss' in Hawaii) is a perennial grassy weed found throughout the tropics (Sahid et al 1996). Common in young rubber and oil palm plantations in Malyasia (Chee 1990), this perennial spreads aggressively by means of both stolons and seeds.…”

mentioning

confidence: 99%

“…Studies have evaluated the efficacy of various chemicals for control of sourgrass, including asulam (Pamplona and Soerjani 1975), carfentrazone (Ilango 2003), glyphosate (Hussein and Weng 1977;Pamplona and Soerjani 1975;Sahid et al 1996;Wong 1977), glyphosate in combination with carfentrazone (Ilango 2003), metolachlor (Ismail et al 1990), paraquat (Acosta and Agüero 2002) fluazifop-butyl and sethoxydim (Pinho et al 1985), paraquat in combination with diuron (Pamplona and Soerjani 1975), and aminotriazole in combination with diuron and MCPA (Pamplona and Soerjani 1975). Applications of imazapyr have been investi-gated alone and in combination with 2,4-D, ametryn, dicamba, diuron, glufosinate, metsulfuron, metolachlor, and oxyfluorfen (Ahmad Faiz 2002).…”

mentioning

confidence: 99%

Sodium Chloride Salt Applications Provide Effective Control of Sourgrass (Paspalum conjugatum) in Seashore Paspalum Turf

Brosnan

DeFrank

Woods³

et al. 2009

Weed technol.

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Sourgrass is a stoloniferous perennial grassy weed found on golf courses throughout Hawaii. No herbicides are currently labeled for selective control of sourgrass in seashore paspalum turf, a species used regularly on golf courses throughout the tropics. A single granular application of fine salt (99% sodium chloride, 1% sodium silicoaluminate, 83% of particles 0.5 to 0.25 mm in diameter) at a rate of 1,464 kg/ha provided 84 and 23% control of sourgrass 6 wk after initial treatment (WAIT) in 2007 and 2008, respectively. Sequential granular applications of fine salt at 488 kg/ha provided 92 and 96% control of sourgrass in 2007 and 2008, respectively, at 6 WAIT. Granular applications of a coarse salt (100% sodium chloride, 75% of particles 2.0 to 1.0 mm in diameter) provided a lower level of control than fine salt at both the 1,464- and 488-kg/ha rates on three out of four rating dates in 2008; a similar trend was observed in 2007, but no significant differences were observed between these treatments. All salt treatments led to higher soil sodium adsorption ratios (SAR) and electrical conductivity (ECe) than the untreated check; however, levels reported in this study were significantly lower than the threshold SAR and ECelevels that have been associated with reduced seashore paspalum growth. Sequential applications of MSMA at 1.12 kg/ha and MSMA plus metribuzin at 1.12 kg/ha and 0.28 kg/ha, respectively, provided greater than 90% control in 2008, but less than 40% control in 2007. Greater seashore paspalum injury was observed following applications of MSMA and MSMA plus metribuzin than following salt applications. Additional research is needed to evaluate strategies for controlling sourgrass in seashore paspalum turf that do not induce phytotoxic injury after application.

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“…Thus, an important question arises, whether environmental factors can modify herbicides phytotoxicity. A few researches indicate that environmental factors influence the efficiency of herbicides (Dickson et al 1990;Sahid et al 1996;Undabeytia et al 1996). Soil salinity is an important factor limiting agricultural productivity in many parts of the world.…”

Section: Introductionmentioning

confidence: 99%

Response of maize (Zea mays L.) to rimsulfuron under salt conditions

2011

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Investigations were carried out to determine the possible interaction between salinity (60 mmol·dm -3 NaCl) and phytotoxicity of herbicide Titus 25 DF (sulfonylurea herbicide containing active ingredient rimsulfuron). The herbicide was added to the nutrient solution at two concentrations 1 or 100 nmol·dm -3 . After 7 days of cultivation in the nutrient solution determined were the growth parameters and some biochemical compounds (photosynthetic pigments, total protein and free amino compounds content). The combined action of 1 nmol·dm -3 rimsulfuron and salt caused a reduction in plant biomass accumulation, but this reduction was due to the salt itself. In the presence of 100 nmol·dm -3 rimsulfuron, growth inhibition of maize roots was very high and salinity did not modify herbicide toxicity. However, reduction in maize shoots growth equalled the sum of the reductions caused by each particular factor applied separately (additive effect). The reduction in shoot fresh weight reached 64%.The investigated stress factors induced a significant increase in amino compounds, with the exception of maize roots grown under NaCl plus 100 nmol·dm -3 rimsulfuron. The concentration of total protein in maize roots diminished under NaCl and 100 nmol·dm -3 rimsulfuron, although in the other cases, it did not change distinctly in comparison to the control. All factors, with the exception of NaCl, induced a slight increase in protein contents in maize leaves. Stress factors did not change significantly the total chlorophyll concentration, however, carotenoid content was markedly reduced. Nevertheless, the combined action of 100 nmol·dm -3 rimsulfuron and NaCl caused a 10% increase in carotenoid content as compared to the control plants.In conclusion, salinity did not change the toxicity of the herbicide applied in low dose (1 nmol·dm -3 ), but it did increase herbicide toxicity at high concentration (100 nmol·dm -3 ) regarding the maize shoots.

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Effects of watering frequency, shade and glyphosate application on Paspalum conjugatum Berg (sour grass)

Cited by 9 publications

References 9 publications

Sodium Chloride Salt Applications Provide Effective Control of Sourgrass (Paspalum conjugatum) in Seashore Paspalum Turf

Response of maize (Zea mays L.) to rimsulfuron under salt conditions

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