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Evaluating the suitability of a new telemetric capacitance-based measurement system for real-time application in irrigation and fertilization management

Treder Waldemar, Klamkowski Krzysztof, Tryngiel-Gać Anna, Wójcik Katarzyna

Journal of Water and Land Development

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2023

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no. 56

67--73

EN

The suitability of a new wireless smart farming system for controlling irrigation and fertilization of horticultural plants was assessed in the study. The system (name: AGREUS® ) includes sensors (soil moisture, salinity, weather data), executive modules (valve modules), and an application available on the web portal (accessed through computers and mobile devices). The studies were performed under laboratory and field conditions. Laboratory tests included appraisal of the precision of soil moisture and salinity measurements carried out with the soil probe (comparison with the results obtained by laboratory methods). Operational tests were conducted in field trials. In these trials, assessment of the possibility of practical control of irrigation and monitoring soil salinity was performed in an apple orchard. The conducted analyses have shown the usefulness of the system, not only for automatic control of irrigation but also for making decisions about the necessity to fertilize plants. The system enables continuous monitoring of changes in soil moisture and salinity, including the migration of minerals across the soil profile (using a probe with several measuring elements) as a result of the applied irrigation or rainfall. The system allows for automatic application of irrigation or fertigation depending on the adopted soil moisture and salinity thresholds. However, the tests showed that a salinity index calculated by the system does not directly correspond to the salinity values determined by laboratory methods. For this reason individual interpretation and determination of optimal ranges for plants is required.

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Effects of different fertigation levels on maize yield and nutrient uptake under semi-arid mediterranean conditions

Demirbas A., Akpinar C., Coskan A., Karakoy T.

Infrastruktura i Ekologia Terenów Wiejskich

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2017

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nr II/2

727--736

EN

The aim of the study was to evaluate the effect of four fertigation levels (25, 50, 75 and 100% of fertilizer dose, 240:100:200 kg N:P:K ha-1) and to compare with conventional practices (CP). The fertigation levels F1 25% of total fertilizer (60:25:50 kg N:P:K ha-1) treatments, F2 treatment is 50% of total fertilizer (120:50:100 kg N:P:K ha-1), F3 treatment is 75% of total fertilizer (180:75:150 kg N:P:K ha-1), F4 treatment is 100% of total fertilizer (240:100:200 kg N:P:K ha-1). The experiment was conducted during 2012 summer (from 20 June to 15 September) under the field conditions in the Menzilat soil series (Typic Xerofluvents) which is located in the East Mediterranean coastal part of Turkey. The experiment was designed as a completely randomized-block with three replications. The maize plant (Zea mays L.) was sown as second crop following with wheat cultivation. The maize yield was higher in F3 fertigation level treatment (12.47 Mg ha-1) compared to the other treatments. Lowest yield was recorded in F2 (8.45 Mg ha-1) treatment. The results shown that the half of the fertilizer application with conventional practices and the other half with fertigation are more efficient under Menzilat soil series conditions. For future, it is important to see the long term effect of fertigation on soil nutrients dynamic under the Mediterranean soil conditions.

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Wpływ stężenia i formy boru na skład chemiczny strefy korzeniowej pomidora (Lycopersicon esculentum Mill.) uprawianego w wełnie mineralnej

Markiewicz B.

Aparatura Badawcza i Dydaktyczna

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2017

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T. 22, nr 3

174--182

PL

Celem przeprowadzonych badań była ocena wpływu fertygacji borem na zmiany koncentracji składników w strefie korzeniowej, pod kątem zastosowania kwasu borowego w porównaniu z najczęściej używanym boraksem przy czterech poziomach boru w pożywce (0,0; 0,4; 0,8; 1,6 mg • dm-3) w intensywnej uprawie pomidora (odm. Alboney F1 i Emotion F1) w wełnie mineralnej. Stwierdzono istotny wzrost zawartości wszystkich analizowanych makroskładników (z wyjątkiem N-NH4 i P) w pożywkach środowiska korzeniowego, w porównaniu z pożywką aplikowaną roślinom. Zastosowanie kwasu borowego jako źródła boru nie miało wpływu na pH pożywek pobieranych z kroplowników, jednak zwiększało koncentrację Mn w matach. Zmiany zawartości Cu w pożywkach były statystycznie nieistotne.

EN

The aim of the study was to evaluate the effect of nutrient solution of boron concentration changes of components in the root zone, in terms of boric acid compared with the most commonly used borax at four levels of boron in the medium (0.0, 0.4, 0.8, 1.6 mg • dm-3) in the intensive cultivation of tomato (Alboney F1 and Emotion F1) in rockwool. There was a significant increase in the content of all analyzed macronutrients (except N-NH4 and P) in root zone, in comparison with the medium applied to the plants. The use of boric acid as the boron source does not affect the pH of media taken from the drippers, but increased concentration of Mn in the mats. Changes in Cu content in media were statistically insignificant.

4

Influence of Drip Irrigation and Fertigation on the Yield of Potato Tubers and Content of Nitrogen Mineral in the Soil

Trawczyński C.

Ecological Chemistry and Engineering. A

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2009

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Vol. 16, nr 8

1021-1027

EN

The field experiment was conducted in the years 2006-2008 at Plant Breeding and Acclimatization Institute, Oirision Jadwisin on the light and acid soil. The aim of the research was to compare tubers yield and content of mineral nitrogen in the soil after harvest of potato by different doses in solid (100 i ] 50 kg N o ha-1) and liquid nitrogen form - fertigation (mean of 43.0 kg N o ha-1) to the soil applied. The control was object non-ferlilized and non-irrigated. The objects were divided on: irrigated and non-irrigated. Drip irrigation method in this experiment was applied. The nitrogen dose in fertigation form by using computer program DSS was established. The doses of water and dates of their application by using tensiometer were established. The soil for examination was taken from thc layer of 0-30 and 30-60 cm. Analyses of nitrate and amnionium ions contents were carried out by reflection spectroscopy using RQ flex Merck reflectometr. The yield of tubers on irrigated object by using fertilizer program DSS was about 47 % higher than on the control object but content of mineral nitrogen in the soil on this object was smaller than on the control. Application nitrogen dose of 150 kg N o ha-1 on non-irrigated object, in all investigation years was the cause high cumulation of mineral nitrogen in the soil after harvest of potato. In second years of investigation (2007) already after applied dose of 100 kg N o ha-1 on non-irrigated conditions high level of mineral nitrogen in the soil was found. Nitrogen surplus may be leached from the soil into groundwater in the autumn and winter period.

PL

Doświadczenie polowe przeprowadzono w latach 2006-2008 w Instytucie Hodowli i Aklimatyzacji Roślin, Oddział Jadwisin na glebie lekkiej, kwaśnej. Celem badań było porównanie wpływu na plon bulw i zawartość azotu mineralnego w glebie po zakończeniu wegetacji ziemniaków zróżnicowanego nawożenia azotem stosowanego do gleby w formie stałej (100 i 150 kg N o ha-1) i płynnej - fertygacja (średnio 43.0 kg N o ha-1). Kontrolę stanowił obiekt bez nawożenia NPK i nienawadniany. Kombinacje podzielono na: nawadniane i nienawadniane. Nawadnianie prowadzono metodą kroplową. Dawkę azotu w formie fertygacji ustalono przy wykorzystaniu komputerowego programu nawozowego DSS. Dawki wody oraz terminy ich stosowania ustalono na podstawie wilgotności gleby przy użyciu tensjometrów. Glebę do badań pobierano z warstwy gleby 0-30 i 30-60 cm. Oznaczenie zawartości jonów azotanowych i amonowych wykonano reflektometrycznie przy użyciu reflektometru RQ flex Merck. Plon bulw uzyskany na kombinacji nawadnianej z wykorzystaniem programu nawozowego DSS był o około 47 % większy niż na kontroli, a zawartość azotu mineralnego w glebie na tej kombinacji mniejsza w porównaniu do kontroli. Zastosowanie dawki azotu 150 kg N o ha-1 bez nawadniania, we wszystkich badanych latach, przyczyniło się do dużej kumulacji azotu mineralnego w glebie po zbiorze ziemniaków. W drugim roku badań (2007) już po zastosowaniu dawki 100 kg N o ha-1 bez nawadniania stwierdzono wysoki poziom azotu mineralnego w glebie. Nadmiar tego azotu może być wypłukany z gleby do wód gruntowych w okresie jesienno--zimowym.

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Wpływ nawadniania kroplowego i fertygacji na dynamikę nagromadzania azotanów w bulwach ziemniaka

Wroniak J., Mazurczyk W., Wierzbicka A.

Inżynieria Ekologiczna

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2006

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Nr 17

165-166