Articles by Keyword: Phytotoxicity

Search results for Phytotoxicity

We found 22 results for you
  1. Factors affecting the activity of atrazine in plants and soil

    Factors affecting the activity of atrazine in plants and soil

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Available research findings concerning (he activity of atrazine in the plant and soil are presented in a brief review. The role of the environment is emphasized. This review is supplemented by recent research results of the University of Pretoria concerning...
  2. Evaluering van plantdoders vir langtermynbeheer van onkruid in aanplantings van knoffel (<em>Allium sativum</em> L.)

    Evaluering van plantdoders vir langtermynbeheer van onkruid in aanplantings van knoffel (<em>Allium sativum</em> L.)

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Van die ses plantdoders wat geëvalueer is, het slegs oksifluorfen bevredigende siesoenlange beheer van onkruide in aanplantings van knoffel (Allium sativum L.) verskaf. Oksadiason, chloroksuron, nitrofen, metabenstiasuron, ioksinil en oksifluorfen het min of geen fitotoksiese simptome op knoffel teen aanbevole...
  3. Tolerance of South African maize (<em>Zea mays</em> L.) cultivars to atrazine

    Tolerance of South African maize (<em>Zea mays</em> L.) cultivars to atrazine

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Sixty-seven maize cultivars were evaluated for tolerance to atrazine (4 p.p.m. v/v) in nutrient solution. Shoot dry masses (SDM) of only two cultivars, SAB149 and NPP x K64r, were reduced more than 40% and another 14 were reduced by more...
  4. Recovery of grain sorghum [<em>Sorghum bicolor</em> (L.) Moench] from atrazine and cyanazine phytotoxicity

    Recovery of grain sorghum [<em>Sorghum bicolor</em> (L.) Moench] from atrazine and cyanazine phytotoxicity

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Recovery of growth following atrazine and cyanazine toxicity and the effect on subsequent grain yield of sorghum were studied in nutrient solutions in two separate experiments. In Experiment I, concentrations of atrazine and cyanazine were decreased at weekly intervals based...
  5. Evaluation of the effects of scorching caused by the directed application of a paraquat-containing herbicide mixture to the base of maize plants at various ages

    Evaluation of the effects of scorching caused by the directed application of a paraquat-containing herbicide mixture to the base of maize plants at various ages

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The effect of herbicides which scorched the lower leaves of maize was compared in three seasons. The first season was relatively dry whilst the other two were wetter seasons. A mixture of cyanazine + atrazine + paraquat + a wetting...
  6. The persistence in soil and phytotoxicity on dry beans of alachlor and metolachlor as affected by climatic factors

    The persistence in soil and phytotoxicity on dry beans of alachlor and metolachlor as affected by climatic factors

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The persistence of alachlor (2-chloro-2′, 6′-diethyl-N-methoxymethylacetanilide) and metolachlor [2-chloro-6′-ethyl-N-(2-methoxy-1-methylethyl)acet-O-toluidide] in soil was determined over an 80-day period at temperatures ranging from 5 to 50°C. Soils were maintained at either 50 or 100% of field capacity. The herbicides were less persistent...
  7. Rol van tekorte aan sekere makro-elemente by verdraagsaamheid van mielies (<em>Zea mays</em> L.) teenoor atrasien

    Rol van tekorte aan sekere makro-elemente by verdraagsaamheid van mielies (<em>Zea mays</em> L.) teenoor atrasien

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Die verdraagsaamheid van mieliesaailinge (Zea mays L. kv SSM2041) teenoor atrasien is in 'n glashuis ondersoek. Plante is in potte gekweek, in voedingsoplossings met tekorte aan sekere makro-elemente. Atrasien in die voedingsoplossings is periodiek bepaal met behulp van hoëdrukvloeistofchromatografie. Tekorte...
  8. Alachlor-geïhduseerde veranderinge in sekere membrane van <em>Sorghum bicolor</em> (L.) Moench-plante

    Alachlor-geïhduseerde veranderinge in sekere membrane van <em>Sorghum bicolor</em> (L.) Moench-plante

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Sekere ultrastrukturele veranderinge veroorsaak deur alachlor (α-chloor-2′, 6′-diëtiel-N-metoksimetielasetanilied) in graansorghumplante is ondersoek. Elektronmikro- skoopmikrograwe het aangetoon dat disintegrering van vakuoolmembrane, kernmembrane en omhullingsmembrane van chloroplaste voorgekom het by alachlorbehandelde plante.
  9. Atrazine metabolism in field-grown maize and the effect of atrazine phototoxicity on yield

    Atrazine metabolism in field-grown maize and the effect of atrazine phototoxicity on yield

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Maize was grown under field conditions, applying conventional farming practices. Atrazine was sprayed pre- emergence at concentrations of 1,25 I ha−1ai. and 5 I ha−1ai. Severe phytotoxicity symptoms were visible from the first- to about the sixth-leaf stage i.e. 25–30...
  10. Phytotoxicity of pre-emergence herbicides to peach seedlings (<em>Prunus persica</em>)

    Phytotoxicity of pre-emergence herbicides to peach seedlings (<em>Prunus persica</em>)

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Pre-emergence herbicides were tested for relative phytotoxicity to Nemaguard peach seedlings (Prunus persica) in a sand culture. Typical symptoms, phytotoxicity ratings, growth and regrowth parameters were recorded. Diuron, the mixture diuron plus terbacil (1:1), terbutryne and norflurazon were rated phytotoxic...