Influence of Pesticides on Photosynthesis of Crop Plants

Ferree, D. C.

doi:10.1007/978-94-009-9625-0_30

Cited by 14 publications

(13 citation statements)

References 36 publications

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“…Nevertheless, Tables 2-4 indicate a pronounced effect of sulfur-based products on leaf assimilation. Ferree (1979) in a review, summarised work in the 1930s and 1940s, which showed that sulfur and lime sulfur could reduce leaf assimilation rate. In later work, Ferree et al (1999) found that a single spray of sulfur resulted in a significant decrease in leaf photosynthesis of greenhouse grown MM.…”

Section: Discussionmentioning

confidence: 99%

Growth and fruit quality of ‘Braeburn’ apple(Malus domestica)trees as influenced by fungicide programmes suitable for organic production

Palmer¹,

Davies

Shaw

et al. 2003

New Zealand Journal of Crop and Horticultural Science

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Organic pipfruit growers in New Zealand have reported decreased yield and fruit size and poorer quality of foliage of 'Braeburn' apple (Malus domestica) with fungicidal programmes based on sulfur. This project aimed to quantify the effect of several fungicide programmes compatible with organic production on the tree growth, yield, and fruit quality of 'Braeburn'. The spray programmes included Kocide DF, lime sulfur, Kumulus, slaked lime, Kocide DF + slaked lime, and Kocide DF + Kumulus compared to an Integrated Fruit Production (IFP) compatible programme based on dodine, polyram, and captan. The spray programmes were applied from pink tip until harvest, with a total 19 spray applications made to 5-yearold 'Braeburn'/MM.106 trees. Spray treatments did not influence shoot growth, leaf area development, or increment in trunk cross-sectional area. Leaf photosynthesis was significantly reduced by all treatments which included sulfur (lime sulfur or Kumulus) with reductions of up to almost 50% in January compared to the non-sulfur treatments. At

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Section: Discussionmentioning

confidence: 99%

Growth and fruit quality of ‘Braeburn’ apple(Malus domestica)trees as influenced by fungicide programmes suitable for organic production

Palmer¹,

Davies

Shaw

et al. 2003

New Zealand Journal of Crop and Horticultural Science

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“…Insecticides and surfactant, despite the transient photosynthetic rate reductions at the seedling stage by some insecticides. Earlier studies documented reductions in lettuce photosynthesis and yield by methyl parathion ( 16) The subtle impact of insecticides and surfactants on plant physiology may greatly depend on the formulation and the rate and frequency of spray applications .Insecticides with an oil-based formulation usually interferes with plant gasexchange compared with other formulations (17). In addition the physical and chemical properties of ingredients (adjuvants) in a formulation may also be responsible for changes in plant physiology (18).…”

Section: Discussionmentioning

confidence: 99%

Comparative Study of Some Synthetic and Herbal Pyrethroids on Leuttuce Contents in Saudi Arabia

2016

IJSR

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Three synthetic and one botanical pyrethroids were evaluated during growing of lettuce using the recommended concentrations as suggested by the Saudi Ministry of Agriculture . We conducted experiments to examine the impact of multiple insecticides and fertilizer applications on lettuce photosynthesis and yield . Those pesticides named deltametherin, azadirechtin (herbal), fury ( EW-10% zeta-cyprmethrin) and biotrin (botanical). The objectives of the study were comparable (chlorophyll, carbohydrates, proline contents ) under applications of organic fertilizer, chemical and herbal pesticides and also to assess the variations of these parameters at two different doses for 3 months .Tested pyrethroids were compared, the data revealed that the high dose of biotrin alone or combined with fertilizer was the most effective treatment resulted in a more increment in chlorophyll and total sugar and proline contents,while high dose only induced significant decrease in carotien and soluble sugar . Zeta-cypermethrin came in the second order with the average of 56% increased in sugar( 39% ), and chlorophyll (36%) . High dose of deltametherin and azadirechtin were the least effective treatment. In the present study, biotrin alone or with fertilizer is recommended to be used for controlling the pest in lettuce because of its excellent performance with minimum side effects on the plant contents . However, consideration the long term effects of chemical pesticides on the soil, we recommend that biotrin with organic fertilizer should be considered for incorporation in soils to improve the levels of chlorophyll in lettuce plants and preferably harvesting should be done for animal consumption. Conclusion: These studies suggest that lettuce photosynthesis may be susceptible to some insecticides at the seedling stage. Consequently, we found that biorational insecticides introduced to manage insect pests in lettuce, have no influence on lettuce physiology at the seedling stage.

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“…Insecticides and surfactants with an oilbased formulation are more likely to interfere with plant gas exchange compared with other formulations (Ferree, 1979). Youngman et al (1990) determined that reduced photosynthesis was partly attributed to reduced mesophyll conductance.…”

Section: Discussionmentioning

confidence: 99%

“…Pesticides have varying recommendations for application rates based on the crop, pest, and at times application methods. Method and number of applications as well as combination with non-pesticides occasionally influence photosynthesis (Ferree, 1979). Haile et al (2000) reported that the surfactant (Kinetic; Helena Chem.…”

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confidence: 99%

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Effects of Insecticides on Gas Exchange, Vegetative and Floral Development, and Overall Quality of Gerbera

Spiers¹,

Davies²,

He³

et al. 2006

HortSci

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This study evaluated the influence of insecticides on gas exchange, chlorophyll content, vegetative and floral development, and plant quality of gerbera (Gerbera jamesonii Bolus `Festival Salmon'). Insecticides from five chemical classes were applied weekly at 1× or 4× their respective recommended concentration. The insecticides used were abamectin (Avid), acephate (Orthene), bifenthrin (Talstar), clarified hydrophobic extract of neem oil (Triact), and spinosad (Conserve). Photosynthesis and stomatal conductance were reduced in plants treated with neem oil. Plants treated with neem oil flowered later—and at 4× the recommended label concentration had reduced growth, based on lower vegetative dry mass (DM) and total aboveground DM, reduced leaf area, thicker leaves (lower specific leaf area), higher chlorophyll content (basal leaves), and reduced flower production. Plants treated with acephate at 4× the recommended label concentration were of the lowest quality due to extensive phytotoxicity (leaf chlorosis). Plants treated with 1× or 4× abamectin or spinosad were of the highest quality due to no phytotoxicity and no thrips damage (thrips naturally migrated into the greenhouse). The control plants and plants treated with 1× bifenthrin had reduced quality because of thrips feeding damage; however gas exchange was not negatively affected.

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Influence of Pesticides on Photosynthesis of Crop Plants

Cited by 14 publications

References 36 publications

Growth and fruit quality of ‘Braeburn’ apple(Malus domestica)trees as influenced by fungicide programmes suitable for organic production

Growth and fruit quality of ‘Braeburn’ apple(Malus domestica)trees as influenced by fungicide programmes suitable for organic production

Comparative Study of Some Synthetic and Herbal Pyrethroids on Leuttuce Contents in Saudi Arabia

Effects of Insecticides on Gas Exchange, Vegetative and Floral Development, and Overall Quality of Gerbera

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