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  1. 12 Infrastruktura i Ekologia Terenów Wiejskich
  2. 5 Prace Instytutu Elektrotechniki
  3. 4 Journal of Fruit and Ornamental Plant Research
  4. 3 Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
  5. 3 Infrastructure and Ecology of Rural Areas
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  1. 1 2024
  2. 1 2023
  3. 3 2019
  4. 1 2018
  5. 3 2017
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  1. 39 Klamkowski K.
  2. 32 Treder W.
  3. 11 Tryngiel-Gac A.
  4. 8 Wojcik K.
  5. 5 Treder J.
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1
Doświetlanie rozsady
100%
Klamkowski K.
|
2015
|
nr 10
2
Content available Estimating the substrate water status using capacitance measurements
63%
Klamkowski K. , Treder W.
|
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tom nr II/1
521--533
EN
The suitability of capacitance probes for measuring the actual variations in substrate water content in container-grown ornamental species (Lawson cypress) was examined. The probes were installed in the plant containers. Weighing measurement data on water loss was used to assess the actual changes in substrate water content (plant water use). In an additional test, an evaluation of temperature sensitivity of the capacitance probe was performed under laboratory conditions. The probe was placed in a container containing the growing medium (peat substrate) with a defined (stable) moisture content. The substrate temperature was modified and the changes in probe output were recorded. The experiment demonstrated the existence of the effect of temperature on the quality of soil moisture measurements conducted with the capacitance method. The accuracy of the results obtained from measurements with dielectric sensors in relation to the data obtained by means of weighing platforms depended largely on the temperature profile of the measured medium. It was demonstrated that temperature variations explained 99% of the observed differences in the results of moisture content measured with the capacitance method. Due to the fact that there is no possibility of developing universal factors (for different sensors and substrates) for correcting the influence of temperature, this relationship should be defined independently for a given type of crop and the measuring system available.
3
Content available An hourly reference evapotranspiration model as a tool for estimating plant water requirements
63%
Treder W. , Klamkowski K.
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tom nr II/1
469--481
EN
The usefulness of estimating hourly reference evapotranspiration for assessing the water requirements of plants over a 24-hour period was determined in the study. The values of hourly (ET0,h) and daily (ET0,d) evapotranspiration were calculated using the Penman-Monteith (PM) model. The daily ET0 was calculated automatically by the meteorological station, and the evapotranspiration values for individual hours were calculated using spreadsheet software. To verify the values of evapotranspiration calculated with these two approaches in relation to the actual water needs of grass, lysimetric measurements were performed. Additionally, substrate moisture content and temperature were measured using capacitance probes. The values of evapotranspiration estimated with the hourly PM model were higher than those determined with the daily model. An accuracy of the hourly model in relation to the data measured with a weighing lysimeter depended largely on the quality of the reproduction of meteorological parameters at the site of the crop. Observed underestimation of the actual daily evapotranspiration was presumably due to the use of air temperature values in the calculations (measured at a height of 2 m by the weather station). During strong solar radiation the air temperature was much lower than the temperature of the upper layer of the substrate in the weighing lysimeter. Reference evapotranspiration was recalculated by introducing into the hourly PM model the measured values of substrate temperature. After taking into consideration the higher temperatures, the calculated values of evapotranspiration increased, and the regression model took the form: y = 1.01x + 0.014 (R2 = 0.90), which proves the proportionality of the calculated and measured (actual water needs determined with the weighing lysimeter) data. Reliable data on the hourly variations in evapotranspiration over a 24-hour period can be a great tool for use in controlling the irrigation of plants grown in a limited volume of substrate.
4
Response to drought stress of three strawberry cultivars grown under greenhouse conditions
63%
Klamkowski K. , Treder W.
Journal of Fruit and Ornamental Plant Research
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2008
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tom 16
179-188
5
Content available Wpływ deficytu wody na wymianę gazową liści, wzrost i plonowanie dwóch odmian truskawki uprawianych pod osłonami
63%
Klamkowski K. , Treder W.
|
|
nr 05
PL
W doświadczeniu określono wpływ deficytu wody w podłożu na wybrane parametry fizjologiczne, wzrost i plonowanie roślin dwóch odmian truskawki uprawianych w szklarni. Niedobór wody w podłożu (-30 kPa) był utrzymywany poprzez ograniczenie nawadniania. W doświadczeniu wykazano zróżnicowanie reakcji dwóch odmian truskawki na suszę. W warunkach stresu u roślin odmiany ‘Sonata' stwierdzono mniejsze zahamowanie rozwoju systemu korzeniowego oraz powierzchni liściowej w porównaniu z ‘Elsantą'. Na podstawie pomiarów parametrów fizjologicznych (natężenia fotosyntezy i transpiracji), których stosunek wyraża efektywność wykorzystania wody, wykazano, że rośliny odmiany ‘Sonata' charakteryzują się sprawniejszą regulacją stosunków wodnych. W warunkach optymalnego zaopatrzenia w wodę rośliny obu odmian wydały plon podobnej wielkości. Niedobór wody spowodował większe ograniczenie plonowania w przypadku roślin odmiany ‘Elsanta'.
EN
The response of two strawberry cultivars (‘Elsanta’, ‘Sonata’) to drought was examined by evaluating the yield and selected morphological and physiological parameters. Plants were subjected to two different water regimes: optimalirrigation (control), and reduced irrigation (water potential in the growing medium was maintained at a level -30 kPa, stress treatment). Genotypes differed in their response to water deficiency. Cultivar ‘Sonata’ presented high rates of net photosynthesis with high value of water use efficiency (a ratio of photosynthetic rate to transpiration rate) under water shortage conditions. Drought stress reduced leaf area in all cultivars, but root development was retarded only in ‘Elsanta’. Under water deficiency conditions reduction of yield was higher for ‘Elsanta’. ‘Sonata’ appeared to be more drought resistant which was reflected by both growth and yield parameters.
6
Produkcja biomasy oraz pobieranie skladnikow przez podkladki jabloni M 26 w zaleznosci od nawozenia tytanem
63%
Klamkowski K. , Wojcik P.
|
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nr 2
93-98
7
Influence of a rootstock on transpiration rate and changes in diameter of an apple tree leader growing under different soil water regimes
63%
Klamkowski K. , Treder W.
Journal of Fruit and Ornamental Plant Research
|
2002
|
tom 10
8
Metody pomiaru wilgotności gleby
63%
Klamkowski K. , Treder W.
|
|
nr 06
9
Content available Growth and Photosynthetic Activity of Cucumber as Influenced by Different Fertilization Regimes
51%
Klamkowski K. , Treder W. , Tryngiel-Gać A.
|
|
tom Vol. 18, nr 1
35-41
EN
The investigation aimed at examining the changes in growth and photosynthetic activity of greenhouse-grown cucumber plants subjected to various fertilization regimes. The plants were subjected to the following treatments: standard fertilization with nutrient solution (control), foliar treatments with two fertilizers (complete or nitrogenous), without any fertilization (non-fertilized plants). The plants without fertilization were supplied with water only. Lack of fertilization resulted in the reduction of net photosynthesis and leaf chlorophyll content. The lowest rates of photosynthesis and leaf chlorophyll content were observed in the non-fertilized cucumber plants. Also, retardation in plant growth was evident in this group of plants as a result of nutrient deficiency. Foliar application of complete fertilizer (Agroleaf Power Total) had a pronounced effect on photosynthesis and growth of cucumber plants. On the other hand, the plants sprayed with nitrogenous fertilizer (Basfoliar 36 Extra) assimilated with low intensity, and their vigor did not differ significantly from that recorded for plants supplied with water only (non-fertilized).
PL
W dooewiadczeniu szklarniowym oceniono wzrost i aktywnooeć fizjologiczną rooelin ogórka w reakcji na zastosowane nawożenie. Kombinacje dooewiadczalne obejmowały rooeliny nawożone dokorzeniowo (fertygacja pożywką płynną), rooeliny nienawożone w trakcie trwania uprawy oraz rooeliny nawożone dolistnie jednym z dwóch nawozów: wieloskładnikowym (zawierającym makro i mikroelementy) lub azotowym (zawierającym azot i mikroelementy). Rooeliny nienawożone zasilane były tylko wodą. Najmniejsze natężenie fotosyntezy i zawartość chlorofilu w lioeciach wykazano w przypadku roślin nienawożonych. U tej grupy rooelin stwierdzono także najsilniejsze zahamowanie wzrostu. Spośród zastosowanych nawozów dolistnych, wyższą skuteczność wykazano w przypadku nawozu wieloskładnikowego. U roślin opryskiwanych tym nawozem stwierdzono większą zawartość chlorofilu w liściach oraz wysokie wartosci fotosyntezy netto. Rośliny traktowane nawozem wieloskładnikowym charakteryzowały się także bardziej intensywnym wzrostem.
10
Evapotranspiration estimation using machine learning methods
51%
Treder W. , Klamkowski K. , Wojcik K. , Tryngiel-Gac A.
|
|
nr 2
11
Stomatal characteristics, leaf gas exchange and growth of strawberry plants as affected by various growing conditions
51%
Klamkowski K. , Treder W. , Marasek A. , Borkowska B.
|
|
nr 1 Suppl.
12
Content available Assessment of the effectiveness of sprinkling to protect apple blossoms against spring frost
51%
Treder W. , Tryngiel-Gać A. , Klamkowski K. , Kiełkiewicz M.
Infrastruktura i Ekologia Terenów Wiejskich
|
2017
|
tom nr III/2
1131--1143
EN
Spring frosts can cause very significant losses on fruit farms. The most common method of active protection against frost is sprinkling. The aim of this study was to assess the effectiveness of a sprinkling system used to protect apple trees against the effects of a spring frost. The experiment was conducted on the Mączewscy Fruit Farm. The orchard in which the observations were made is equipped with a system of sprinklers. When the temperature readings showed values close to zero, the sprinkler system was activated. Due to a limited water supply, one row of sprinklers had not been activated, and thus some of the trees were not sprayed at all. The assessment of fruit yield carried out in the autumn of 2015 demonstrated high effectiveness of the sprinkling used to protect apple trees against the spring frost. The frost had damaged most of the flowers of the unprotected trees, which resulted in a decrease in yield of as much as 85-93%.
13
Content available Wplyw dlugosci okresu uprawy sadzonek na zawartosc skrobi w korzeniach oraz plonowanie roslin truskawki odmiany Elsanta
51%
Klamkowski K. , Treder W. , Tryngiel-Gac A.
Zeszyty Naukowe Instytutu Sadownictwa i Kwiaciarstwa w Skierniewicach
|
2008
|
tom 16
113-124
14
Content available Wpływ doświetlania lampami sodowymi i LED na aktywność fotosyntetyczną, wzrost oraz plonowanie roślin
51%
Klamkowski K. , Treder W. , Masny A.
Prace Instytutu Elektrotechniki
|
2015
|
tom Z. 268
73--82
PL
Rośliny truskawki (odmiany „Elsanta” „Grandarosa”) uprawiane w szklarni w okresie zimowo-wiosennym (luty-maj) doświetlano przy pomocy lamp sodowych lub LED (diody emitujące światło czerwone, niebieskie oraz w zakresie bliskiej podczerwieni). Kombinację kontrolną stanowiły rośliny rosnące w warunkach naturalnego światła. Prowadzono pomiary intensywności wymiany gazowej oraz natężenia zielonej barwy liści (względna zawartość chlorofilu). Określono plonowanie roślin, a po zakończeniu doświadczenia wykonano analizę budowy morfologicznej roślin, mierząc masę i powierzchnię liści, masę korzeni oraz średnicę korony. Stwierdzono zróżnicowaną reakcję ocenianych odmian na doświetlanie. Zastosowane światło LED spowodowało zwiększenie natężenia fotosyntezy roślin odmiany „Grandarosa”. Rośliny te charakteryzowały się także intensywniejszym wzrostem i większym plonowaniem w porównaniu do roślin niedoświetlanych. W przypadku odmiany „Elsanta” przebieg procesów fizjologicznych, wzrost i plonowanie roślin nie były uzależnione od zastosowanego doświetlania.
EN
The objective of the study was to evaluate the physiological response and growth of strawberry plants grown under different light treat-ment. During cultivation period (February-May), the plants (two cultivars: ‘Elsanta’, ‘Grandarosa’) received supplemental artificial lighting provided by standard high-pressure sodium lamps or high-power solid-state lighting modules with red, blue and far red LEDs. Quantum irradiance in the both combinations was maintained at the same level. The third group of plants (control combination) was grown under the natural light (without sup-plemental lighting). The following measurements were taken: photosynthetic rate, leaf greenness index (relative chlorophyll content), fruit yield and the most important morphological parameters (fresh weight of plant organs, leaf surface area, crown diameter). The results showed that supplemental illumi-nation using LED light source affected photosynthesis (higher rates), growth (higher foliage weight and area) and productivity of ‘Grandarosa’ straw-berry plants. On the opposite, no significant effect of supplemental artificial lighting on performance of ‘Elsanta’ plants was recorded. The obtained results showed that LED lamps could be used in greenhouse lighting systems. However, much work still has to be done to optimize lighting spectrum of LED modules for the cultivation of the specific crop species and cultivars.
15
Wplyw krotkotrwalego przechowywania sadzonek rozlogowych truskawki w temperaturze 2 stopni C na dynamike ukorzeniania, wzrost i plonowanie roslin
51%
Klamkowski K. , Treder W. , Zurawicz E.
|
|
tom 12
147-153
16
Content available Efektywność nawadniania jabłoni w sadzie replantowanym
51%
Tryngirl-Gac A. , Treder W. , Wojcik K. , Klamkowski K.
|
|
nr II/1
17
Content available A new approach to the method of drawing the Gaussen-Walter climate diagram
51%
Treder W. , Klamkowski K. , Wójcik K.
Meteorology Hydrology and Water Management. Research and Operational Applications
|
2018
|
tom Vol. 6, Iss. 2
3--9
EN
In traditional climate diagrams a fixed coefficient (α) between temperature and precipitation has been adopted. It has been shown, however, that such an approach does not correctly describe the conditions of the climatic balance in Poland for the entire growing season. In this paper, a different solution to this problem is proposed - the introduction of a variable coefficient for individual months. The analysis of patterns of climatic variables over the year supports the hypothesis that in order to estimate ETo only by means of mean air temperature (ETo = α·T), the coefficient α should be variable for the individual months of the vegetative period. The values of the coefficient were empirically determined for use in calculating daily and monthly ETo. The newly proposed coefficients α were different from those determined with the standard climate diagram (published by Walter, Lieth 1967). The introduction of the variable value α into the computational model markedly improved the quality of the estimation of ETo. The mean bias errors determined for the estimation of ETo on the basis of temperature and the changing value of α were considerably lower than for the estimation of ETo with a fixed value of α. This provides the possibility of a more accurate presentation of periods of both excess and shortage of precipitation.
18
Badania nad skutecznoscia oslon z wlokniny w ochronie roslin przed mrozem
51%
Mika A. , Treder W. , Klamkowski K.
Szkółkarstwo
|
2004
|
nr 4
50-51
19
Content available Potrzeby wodne matecznika truskawki prowadzonego pod oslonami
51%
Treder W. , Tryngiel-Gac A. , Klamkowski K.
|
|
nr II/1
20
Chlorophyll fluorescence and gas exchange measurements as a tool for evaluation susceptibility of strawberry plants to biotic stress
51%
Sowik I. , Borkowska B. , Michalczuk L. , Klamkowski K.
|
|
nr 1 Suppl.
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