Analysis of Hydrothermal Conditions and Their Impact on Early Potato Yields

Radzka, Elżbieta; Rymuza, Katarzyna; Lenartowicz, Tomasz

doi:10.12911/22998993/1866

Cited by 15 publications

(11 citation statements)

References 1 publication

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“…Periods of high temperature and drought are becoming more frequent in Central Europe. In east-central Poland, the shortage of rainfall in the growing season of early potato cultivars occurs more often than their excess (Radzka et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Growth and Marketable Potato (Solanum Tuberosum L.) Tuber Yield in Response to Foliar Application of Seaweed Extract and Humic Acids

Wadas¹

2019

Appl. Ecol. Env. Res.

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The effect of foliar application of seaweed extracts Bio-algeen S90 (Ascophyllun nodosum) and Kelpak SL (Ecklonia maxina) and humic and fulvic acids from leonardite HumiPlant on plant growth and marketable tuber yield of early potato crop was investigated. The application of seaweed extracts resulted in a faster rate of plant growth. Bio-algeen S90 affected potato growth more than Kelpak SL. The plants grew taller and produced a greater above-ground biomass. With the use of HumiPlant, stems were shorter but had a similar weight to plants in the cultivation without biostimulant. Biostimulants caused enlargement of the assimilation leaf area, but had no effect on the weight of leaves, leaf weight ratio (LWR) or leaf area ratio (LAR). The yield-increasing effect of biostimulants depended on hydrothermal conditions during potato growth. Seaweed extracts produced better results in a warm and a very wet growing season, whereas humic and fulvic acids produced better results in a cool growing season with drought during the tuber growth period.

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Section: Discussionmentioning

confidence: 99%

Growth and Marketable Potato (Solanum Tuberosum L.) Tuber Yield in Response to Foliar Application of Seaweed Extract and Humic Acids

Wadas¹

2019

Appl. Ecol. Env. Res.

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“…Sielianinov's hydrothermal coefficient was calculated in order to determine temporal variation of meteorological conditions and their effects on vegetation. The hydrothermal coefficient (K) was calculated on the basis of monthly sums of precipitation (P) and a sum of monthly air temperatures (t), using the following formula (Radzka et al, 2015): Table 2. It was assumed that extreme conditions took place when its value was below 0.7 and above 2.5 (Radzka et al, 2015 September 2015.…”

Section: Weather Conditionsmentioning

confidence: 99%

“…The hydrothermal coefficient (K) was calculated on the basis of monthly sums of precipitation (P) and a sum of monthly air temperatures (t), using the following formula (Radzka et al, 2015): Table 2. It was assumed that extreme conditions took place when its value was below 0.7 and above 2.5 (Radzka et al, 2015 September 2015. In the remaining months of the growing periods they were not as favorable, varying from extremely dry in August 2015 to extremely wet in October 2016.…”

Section: Weather Conditionsmentioning

confidence: 99%

Effect of Ecklonia maxima extract on photosynthesis activity and chlorophyll content of Medicago × varia Martyn leaves

Sosnowski

Jankowski

Truba

et al. 2019

Chil. j. agric. res.

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Recently, there is a big interest in science to use seaweed extract in agricultural practice. Therefore, the aim of this paper was to determine the effect of foliar application of Ecklonia maxima extract on photosynthetic activity and chlorophyll content of Medicago ×varia Martyn leaves. The experimental factor was a commercial product containing E. maxima extract (Em). The following parameters were determined: maximum photosystem II efficiency (Fv/Fm) in the dark-adapted state, actual photosystem II efficiency in the light-adapted state (∆F/Fm'), the photochemical quenching coefficient (qP), the non-photochemical quenching coefficient (qN), chlorophyll content determination. The Fisher-Snedecor test was used to determine whether the impact of experimental factor was significant, while the value of the HSD0.05 was calculated with Tukey's test. As a reaction to the particular conditions during the experiment alfalfa treated with Em had a better efficiency of the photosynthetic apparatus in relation to the control. Algae extract used on hybrid alfalfa leaves caused a 12.4% increase of Fv/Fm parameter, from 0.565 on the control to 0.635. The value of the actual efficiency of photosystem II (∆F/Fm) determined under the same conditions turned out to be about 20% higher for plants treated with the extract. Chlorophyll a and b concentration, as a response to the extract, increased by 12% and 16.7%, respectively. The experiment showed that periods of rainfall shortages did not reverse the effect of the extract on plants, with an increase in chlorophyll a and b content during the growing seasons with dry and extremely dry months.

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“…Sielianinov's hydrothermal coefficient was calculated in order to determine the temporal variation of meteorological conditions and their effects on vegetation. The hydrothermal coefficient (K ) was calculated on the basis of monthly sums of precipitation (P) and a sum of monthly air temperatures (t), using the following formula (Radzka et al 2015):…”

Section: Weather Conditionsmentioning

confidence: 99%

“…Values of Sielianinov's hydrothermal coefficient (K ) are presented in Table 1. It was assumed that extreme conditions took place when its value was below 0.7 and above 2.5 (Radzka et al 2015).…”

Section: Weather Conditionsmentioning

confidence: 99%

The effects of indole-3-butyric acid and 6-benzyloaminopuryn on Fabaceae plants morphometrics

Sosnowski

Król

Truba

2019

Journal of Plant Interactions

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The experiment was conducted to study the impact of indole-3-butyric acid (synthetic auxin) and 6-benzyloaminopuryn (synthetic cytokinin), and the mixture of these compounds on fresh and dry matter production and the number of leaves, stems, and inflorescences Medicago x varia T. Martyn and Trifolium pratense L. For the plants to be thoroughly covered, 0.2 dm 3 of spraying liquid was used per one cylinder with growth regulator concentration of 30 mg dm −3. Synthetic auxin in the form of IBA, cytokinin in the form of BAP, and their mixture significantly affected biometric parameters of hybrid alfalfa and red clover. However, auxin was more effective than cytokinin. Plants treated with it had more leaves, stems, and inflorescences, which caused an increase in fresh and dry matter weight. Hybrid alfalfa produced more fresh and dry matter than red clover. Plants of the first harvest had the highest values of most biometric features.

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Analysis of Hydrothermal Conditions and Their Impact on Early Potato Yields

Cited by 15 publications

References 1 publication

Growth and Marketable Potato (Solanum Tuberosum L.) Tuber Yield in Response to Foliar Application of Seaweed Extract and Humic Acids

Growth and Marketable Potato (Solanum Tuberosum L.) Tuber Yield in Response to Foliar Application of Seaweed Extract and Humic Acids

Effect of Ecklonia maxima extract on photosynthesis activity and chlorophyll content of Medicago × varia Martyn leaves

The effects of indole-3-butyric acid and 6-benzyloaminopuryn on Fabaceae plants morphometrics

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