The Dynamics of Photosynthetic Pigments in Winter Wheat Leaves When Using Nitrogen Fertilisers

Juchnevičienė, Aistė; Vagusevičienė, Ilona

doi:10.15544/rd.2015.033

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…A photosynthetic apparatus is a volumetric reservoir for storing organic forms of nitrogen. That is why its efficiency determines the future yield potential of plants (Sheheda et al, 2018), is the basis of their productivity, and largely depends on the content and ratio of pigments in plant (Juchnevičienė & Vagusevičienė, 2015). The plant growing environment affects the mechanisms of pigment activity.…”

Section: Relevancementioning

confidence: 99%

Features of the pigment complex of winter wheat plants depending on the method of fertilisation

Bilousova,

Klipakova,

Keneva

2021

Rosl. g̀runtozn.

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To maximise the yield of winter wheat, it is necessary to further optimise modern cultivation technologies to adapt them to changing environmental conditions. One of the aspects of plant adaptation to unfavourable abiotic factors is the active functioning of the photosynthetic apparatus, which depends on the number of nutrients applied. This paper investigates the effect of fertilisation on the state of the pigment complex of winter wheat plants in the Southern Steppe of Ukraine. Two varieties of winter wheat were selected for the study: Shestopalivka and Mason. The scheme of the experiment included the application of fertilisers during sowing (К0; К12) and foliar processing with various tank mixtures (urea; urea + magnesium sulphate; urea + magnesium sulphate + potassium monophosphate). The pigment content was determined by grinding fresh leaves of winter wheat with further addition of a solvent in the form of acetone. The pigments were measured using a spectrophotometer. The results of the studies showed that before foliar fertilisation, the content of chlorophyll a and carotenoids was higher in the leaves of plants of the Shestopalivka variety. At the same time, the content of chlorophyll b was higher for Mason plants by 17%, which may be a consequence of the adaptation of plants of this variety to a lack of light. A decrease in the pigment content in the leaves of plants of all experimental variants caused by the active growth of the photosynthesising surface and a decrease in the total dry matter mass was observed on day 3 after the foliar fertilisation. There was no significant difference between varieties in the content of photosynthetic pigments during this period. On the 10th day after foliar spraying, an increase in the content of chlorophyll a and b was observed for both studied varieties, which may be the result of the adaptation of the photosynthetic apparatus of winter wheat plants to lighting conditions. Foliar fertilisation of winter wheat plants with a tank mixture of urea with magnesium sulphate and potassium monophosphate contributed to a further increase in the content of chlorophyll a by 12-23% and chlorophyll b by 5-37%, depending on the variety compared to the control. The results of the conducted research indicate the high efficiency of the complex application of nitrogen-phosphorus-potassium fertilisers for foliar spraying of winter wheat plants at the stage of BBCH 31 both on the background of pre-sowing potassium fertilizers and without it

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Section: Relevancementioning

confidence: 99%

Features of the pigment complex of winter wheat plants depending on the method of fertilisation

Bilousova,

Klipakova,

Keneva

2021

Rosl. g̀runtozn.

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“…Chlorophyll is extremely sensitive to changes in the nitrogen content in the soil because most of the nitrogen is part of the pigments. A properly selected fertiliser system, including foliar fertilisation, delays the degradation of photosynthetic pigments and prolongs the period of active photosynthesis and ensures active transport of assimilates to the seeds, thereby determining the yield (Juchnevičienė & Vagusevičienė, 2015).…”

Section: Analysis Of Recent Research and Publicationsmentioning

confidence: 99%

Untitled

2021

Rosl. g̀runtozn.

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The article presents the results of research on the specifics of winter wheat yield formation depending on preceding crops. It was established that in the Right-Bank Forest-Steppe, according to the ability to provide winter wheat during the sowing period (0-10 cm soil layer) with available moisture, the preceding crops were arranged as follows: peas -winter rapesunflower -soybeans -corn for silage. At the time of sowing winter wheat, sufficient reserves of available moisture in the 0-10 cm soil layer were established after peas and winter rape, respectively, 11.5 and 10.9 mm. Soybeans and corn for silage, as predecessors, did not provide sufficient moisture reserves for sowing winter wheat in both the 0-10 cm and 0-30 cm soil layers.The highest yield of winter wheat in 2019-2021 averaged 5.68 t/ha, achieved by planting it after peas. The use of winter rape and soybeans as a precursor reduced its yield by 4.40 and 5.40%, respectively, which in absolute terms amounted to 0.25 and 0.31 t/ha. When winter wheat was cultivated after corn for silage and sunflower, the crop yield decreased by 0.48 and 0.67 t/ha, respectively. The highest quality indices of winter wheat grain -protein content of 13.1 and 13.3% and gluten content of 25.2 and 25.5% -were obtained when it was placed after legumes (peas and soybeans). Winter rape, as a predecessor, provided grain quality indices of 13.0% protein and 24.5%

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Peculiarities of pigment complex functioning of winter wheat plants depending on the fertilizer application method

2021

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To obtain the maximum yield of winter wheat, it is necessary to further optimize the existing cultivation technologies in the direction of their adaptation to changing environmental conditions. One of the areas of adaptation of plants to adverse abiotic factors is the active functioning of the photosynthetic apparatus, which depends on the amount of nutrients introduced. The influence of fertilizer application on the condition of the pigment complex of winter wheat plants in the conditions of the Southern Steppe of Ukraine has been studied. Two varieties of winter wheat were selected for the study: Shestopalivka and Mason. The experiment scheme involved the application of fertilizers at sowing (K0; K12) and foliar treatment with various tank mixtures (urea; urea + magnesium sulfate; urea + magnesium sulfate + potassium monophosphate). The pigment content has been determined by grinding fresh leaves of winter wheat, followed by the addition of a solvent in the form of acetone. Measurements of pigments were performed using a spectrophotometer. According to the research results, it was established that before the foliar treatment the a-chlorophyll content and carotenoids was higher in the plant leaves of the Shestopalivka variety. At the same time, the b-chlorophyll content on the contrary was higher for plants of the Mason variety by 17%, which may be due to the adaptation of plants of this variety to lack of light. On the 3rd day after foliar treatment, a decrease in the pigment content in the plant leaves of all experimental variants has been observed, which was due to the active growth of the photosynthetic surface and a decrease in the total dry matter mass. There was no significant difference between the varieties of the content of photosynthetic pigments in this period. On the 10th day after foliar treatment, an increase in a- and b-chlorophyll content has been observed for both studied varieties, which may be the result of adaptation of the photosynthetic apparatus of winter wheat plants to lighting conditions. Foliar treatment of winter wheat plants with a tank mixture of urea with magnesium sulfate and potassium monophosphate contributed to a further increase in the content of a-chlorophyll by 12-23%, and b-chlorophyll by 5-37% depending on the variety compared to the control. The results of the research testify to the high efficiency of complex application of nitrogen-phosphorus-potassium fertilizers for foliar treatment of winter wheat plants in the BBCH 31 stage, both against the background of pre-sowing application of potassium fertilizers and without it.

show abstract

The Dynamics of Photosynthetic Pigments in Winter Wheat Leaves When Using Nitrogen Fertilisers

Cited by 3 publications

References 15 publications

Features of the pigment complex of winter wheat plants depending on the method of fertilisation

Features of the pigment complex of winter wheat plants depending on the method of fertilisation

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Peculiarities of pigment complex functioning of winter wheat plants depending on the fertilizer application method

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