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Evaluation of selected parameters of photosynthesis as herbicide stress indicators on the example of glyphosate

100%

Wysocki K., Banaszkiewicz T., Olszewski J.

Journal of Plant Protection Research

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2018

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tom 58

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nr 3

This study was aimed at evaluating the effect of sublethal doses of glyphosate on physiological parameters of a common ornamental plant Mexican marigold (Tagetes erecta). The herbicide was applied in the following doses: 720 g ⋅ ha–1 (standard field dose), 144 g ⋅ ha–1, 28.8 g ⋅ ha–1, and 14.4 g ⋅ ha–1, in the form of a spraying treatment of plants in a specialist spraying chamber. The net assimilation rate and leaf greenness index were then determined. Herbicide application in the sublethal doses, i.e. below 720 g ⋅ ha–1, caused disorders in both analyzed physiological parameters of plants. The glyphosate dose of 144 g ⋅ ha–1 elicited transient disorders in the leaf greenness index. In turn, the use of the lower doses (28.8 g ⋅ ha–1 and 14.4 g ⋅ ha–1) caused a short-term increase in the net photosynthesis rate in the plants which was accompanied by a decreased value of the leaf greenness index. Study results demonstrated the effect of sublethal doses of glyphosate as a stress factor in parameters associated with the process of photosynthesis in plants.

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Strategies of reducing the toxicity of sugar mill effluent by using biofertilizer inoculants

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Rajesh M., Natarajan K., Renish N.

International Letters of Natural Sciences

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2015

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tom 05

The present investigation has been carried out on Tagetes erecta to search out the effect of sugar mill effluent on growth and yield. In-vivo conditions were set up for the experiment purpose. Pots were filled with soil and treated with different concentrations of sugar mill effluent i.e., 10, 25, 50, 75 and 100% on morphological parameters of test crop. Results of pot culture experiment showed that at 10 % concentrations of sugar mill effluent proved to better to the crops growth and thereafter the growth may reduce over control. In order to mitigate the effluent toxicity certain Biofertilizers inoculants were mixed to the soil along with the same effluent treatments. The study suggests that the Biofertilizers inoculants along with effluent irrigation proved to be better for plants growth.

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The influence of substrate type and chlormequat on the growth and flowering of marigold (Tagetes L.)

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Maslanka M., Magdziarz R.

Folia Horticulturae

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2017

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tom 29

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nr 2

Ograniczanie wyników

1 Folia Horticulturae

1 International Letters of Natural Sciences

1 Journal of Plant Protection Research

1 Banaszkiewicz T.

1 Magdziarz R.

1 Maslanka M.

1 Natarajan K.

1 Olszewski J.

1 Rajesh M.

1 Renish N.

1 Wysocki K.

1 2018

1 2017

1 2015

Evaluation of selected parameters of photosynthesis as herbicide stress indicators on the example of glyphosate

Strategies of reducing the toxicity of sugar mill effluent by using biofertilizer inoculants

The influence of substrate type and chlormequat on the growth and flowering of marigold (Tagetes L.)