Effects of nitrogen fertilization on the photosynthesis and biomass distribution in a potato crop

Salas-Rosales, José E.; Villa, Pedro Manuel; Rodrigues, Alice Cristina; Rada, Fermín

doi:10.21704/pja.v4i2.1571

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…When the growth of microorganisms reaches a certain level, it enters a stable period due to environmental constraints, and the growth of microorganisms is stable at this time. With the depletion of nutrients, microorganisms tend to decline and nally lose their activity completely [22]. In the logarithmic phase, the algae began to enter a period of rapid exponential growth.…”

Section: The Effect Of Nitrogen and Phosphorusmentioning

confidence: 99%

Effects of Nitrogen and Phosphorus Nutrients on the Proliferation of Heterosigma Akashiwo under the Background of Mobile Big Data

Duan

Huang

Zheng

et al. 2022

International Transactions on Electrical Energy Systems

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In the era of information explosion, mobile data is developing rapidly, and many fields are facing the challenges of data collection, analysis and operation. Heterosigma akashiwo is a kind of wide temperature and wide salt algae, belonging to the class Echinococcus and the genus heterobenthos. It is widely distributed in the coastal waters of the world. It has formed harmful red tides for many times in many countries, causing a large number of fish deaths, causing great economic losses and serious damage to aquatic resources. If toxic red tides break out frequently, they will pose a great threat to public health. Seawater eutrophication is the main environmental inducement for the formation of red tide by Heterosigma akashiwo. In particular, the content of nutrients in seawater significantly affects the reproduction of Heterosigma akashiwo and the excessive proliferation of plankton such as algae. At the same time, a large number of planktons will devour the dissolved oxygen in the water, thus affecting the photosynthesis of the water body, resulting in the deterioration of the water quality and the damage to the functions of ecology and water resources. As for the effects of nitrogen, phosphorus, iron and different vitamins on the growth of Heterosigma akashiwo, this paper takes Heterosigma akashiwo as the research object, and focuses on the analysis of the effects of ammonium chloride, urea and sodium dihydrogen phosphate on the proliferation of Heterosigma akashiwo. e results showed that the higher or lower the concentration of nitrogen and phosphorus, the slower the proliferation rate of Heterosigma akashiwo; Heterosigma akashiwo had the maximum proliferation rate under the nitrogen concentration of 300-500 μmol/L; At the concentration of 10∼15 μmol/L phosphorus, its growth rate is the fastest and its proliferation level is the highest. e selected nitrogen and phosphorus have a very significant impact on the proliferation of microalgae.

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Section: The Effect Of Nitrogen and Phosphorusmentioning

confidence: 99%

Effects of Nitrogen and Phosphorus Nutrients on the Proliferation of Heterosigma Akashiwo under the Background of Mobile Big Data

Duan

Huang

Zheng

et al. 2022

International Transactions on Electrical Energy Systems

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“…An increase in available nitrogen causing an increase in the yield of tubers is usually observed in a range of 0-300 kg N•ha −1 . In study [41], an increase in yield as a result of N fertilization from 36 to 49 g increased the share of tuber biomass in total biomass to 76-87% [42]. This study evidenced that the accumulation of biomass in potato tubers showed a course that was different from that in the case of above-ground parts and roots.…”

Section: Distribution Of Biomass To Above-ground Parts Roots and Tubersmentioning

confidence: 60%

Effect of Deep Placement Fertilization on the Distribution of Biomass, Nutrients, and Root System Development in Potato Plants

Niedziński

Rutkowska

Labetowicz

et al. 2023

Plants

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The study was carried out in designed pots—rhizoboxes. Root systems were evaluated using computer scanning to determine total length, root area, and root diameter. The study showed a favorable effect of deep placement of fertilizers on total yield, increasing biomass yield by 7–17% relative to surface fertilization. The largest biomass increase under the influence of deep fertilization was obtained in the case of tuber yield, in which a yield increase of 18–34% was obtained. Higher yields of potato tubers were obtained under depth fertilization compared to surface application of fertilizers. Under the influence of deep fertilization at a depth of 20 cm, the uptake of nitrogen and phosphorus by potato biomass increased by 20–21%. Increased depth of fertilization increased the proportion of nitrogen accumulated in the tubers, while in the case of phosphorus, no effect of depth on P distribution was shown. An analysis of root system parameters showed a positive effect on increases in length and total root area under deep fertilization of potato plants. Based on the study, it was found that the distribution of dry matter, nutrients, and potato root development parameters were most optimal when fertilizer granules were applied at a depth of 20 cm.

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The effect of differentiated application of nitrogen fertilizers on the yield of potatoes (Solanum tuberosum L.) of the Snegir variety

Щуклина

2022

Ovoŝi Rossii

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Relevance. Potatoes belong to crops that place high demands on the level of mineral nutrition. He needs nitrogen especially badly. Timely introduction of calculated doses of nitrogen fertilizers based on the results of photometric diagnostics of plants allows rational use of fertilizers and increase potato yields.Material and methods. The studies were carried out in the conditions of the Central region of the Non-Chernozem zone on sod-podzolic medium loamy soils with a high content of mobile forms of phosphorus and potassium and a low humus content (1,9%). The object of research is an early-ripening potato variety Bullfinch. To recalculate the dose of nitrogen fertilizing, photometric diagnostics of crops was carried out with an optical sensor GreenSeeker RT200. Additionally, before and after fertilizing, a manual N-tester Yara was examined. Before the main harvest, a control digging of tubers was carried out to determine the structure of the crop with division into 4 fractions.Results. It was found that the introduction of nitrogen fertilizers into the top dressing during the closing phase of the tops in the form of ammonium nitrate has a generally favorable effect on the growth and development of potatoes. This is confirmed by the results of photometric diagnostics performed by the Yara N-tester during the withering phase of the tops. When applying top dressing with a fixed dose, the N-tester readings were 21,7% higher than in the control, and when applying fertilizers with a differentiated dose by 25,6%. The yield of potato tubers increased when applying a fixed dose of top dressing by 10,8%, differentiated by 14,5% compared to the control.

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Effects of nitrogen fertilization on the photosynthesis and biomass distribution in a potato crop

Cited by 3 publications

References 15 publications

Effects of Nitrogen and Phosphorus Nutrients on the Proliferation of Heterosigma Akashiwo under the Background of Mobile Big Data

Effects of Nitrogen and Phosphorus Nutrients on the Proliferation of Heterosigma Akashiwo under the Background of Mobile Big Data

Effect of Deep Placement Fertilization on the Distribution of Biomass, Nutrients, and Root System Development in Potato Plants

The effect of differentiated application of nitrogen fertilizers on the yield of potatoes (Solanum tuberosum L.) of the Snegir variety

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