Effect of Hydroponic Solution pH on the Growth of Greenhouse Rose

Kim, Hyun-Ju; Cho, Young-Son; Kwon, Oh-Keun; Cho, Myung-Whan; Hwang, Jae-Bok; Jeon, Weon-Tae; Bae, Soon-De

doi:10.3923/ajps.2005.17.22

Cited by 6 publications

(3 citation statements)

References 15 publications

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“…The main calibration methods for these sensors are single-, double-and multi-point technologies with recording the average value of the measured value and standard deviation, taking into account temperature dependence of the output signal of the acidity meter. So far, the results of studies evaluating the effect of soil acidity and irrigation solution on crop growth performance on protected grounds have been presented [26][27][28][29][30]. In these articles, the authors established the basic laws of the effect of pH on the quality indicators of cultivating various types of greenhouse plants.…”

Section: Analysis and Generalization Of Known Resultsmentioning

confidence: 99%

Computer-Integrated Device for Acidity Measurement Monitoring in Greenhouse Conditions with Compensation of Destabilizing Factors

Laktionov¹,

Vovna²,

Kabanets³

et al. 2020

I2M

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The purpose of the article is to improve procedures of computerized monitoring and control of technological processes of growing greenhouse crops by substantiating methods of improving the accuracy of computer-integrated devices for measuring irrigation solution acidity. The article solves the topical scientific and applied problem of determining the conversion characteristics of computerized acidity monitoring systems with integral and differential assessment of their metrological parameters. Theoretical and experimental studies were obtained based on structural-algorithmic synthesis methods for information-measuring systems; methods of mathematical planning of experiments; regression analysis of experimental data and the concept of uncertainty. The computerized acidity meter was implemented on the basis of an ion-selective pH electrode, Arduino microprocessor platform, and ThingSpeak cloud computing service. The relative total boundary uncertainty of acidity measurement is not more than ±1.1 %. Methods of compensating of the random component of uncertainty based on the median filtering algorithm and additional uncertainty from the destabilizing effect of temperature were introduced when implementing the measuring device. Promising areas of priority research to improve the efficiency of the developed computerized acidity meter were justified. The developed device can be used in the complex automation of greenhouse cultivation processes. The developed and implemented measuring tool can be used when planning agricultural operations in greenhouse conditions.

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Section: Analysis and Generalization Of Known Resultsmentioning

confidence: 99%

Computer-Integrated Device for Acidity Measurement Monitoring in Greenhouse Conditions with Compensation of Destabilizing Factors

Laktionov¹,

Vovna²,

Kabanets³

et al. 2020

I2M

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“…In this regard, it was reported that the ratios of K/N [Sarooshi andCresswell 1994, Caruso et al 2003], NO 3 -/NH 4 + [Tabatabaei et al 2006, Guo et al 2007, Kafkafi 2008, K/Ca [Arshad et al 2015], K/Ca/Mg [Neocleous and Savvas 2013], and levels of K [Seyedi et al 2014], EC [D'Anna et al 2003, Portela et al 2012 and pH [Kim et al 2005], were particularly important in terms of the effect of these factors in soilless cultivation systems on yield and quality of strawberry and various horticultural crops. For instance, some experiments have demonstrated that fruit quality parameters such as soluble solids content, titratable acidity and dry matter arouse due to increasing EC level of nutrient solution from 2 to 10 dS•m -1 [Chadirin et al 2007].…”

Section: Introductionmentioning

confidence: 99%

Effect of Different K+/Ca2+ Ratios on Yield, Quality and Physiological Disorder in Soilless Strawberry Cultivation

Adak

2019

asphc

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The balance of mineral nutrients in plant nutrient solutions has an influence on yield, fruit quality and physiological disorder of strawberries grown in soilless conditions. Nutrient solutions that enhance the yield and quality of plants grown in soilless conditions are optimized through anion-cation equilibrium, optimum K++Ca2+/Mg2+ and K+/Ca2+ ratios. In this study, the effect of three different K+/Ca2+ ratios (5.5/7.0; 5.0/7.0; 6.0/6.0) on some morpho-physiological features (crown diameter, chlorophyll index, leaf temperature), fruit yield, fruit quality (fruit weight, total soluble solids, titratable acidity, ascorbic acid, firmness) and physiological disorder (tip burn) of ‘Albion’ and ‘Festival’ strawberries, were investigated. Results show that increasing K+/Ca2+ ratios significantly accelerated the tip burn incidence. On the other hand, the highest yield, firmness and the lowest tip burn were achieved at 5.5/7.0 ratio of K+/Ca2+ treatment.

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“…The decrease in the concentration of nutrients such as N, K, and Ca under the conditions of salinity stress can be attributed to the decrease in root activity and the decrease in the absorption of water and nutrients because absorption of nutrients can be significantly reduced under such conditions(Acosta-Motos et al, 2017;Kaya et al, 2001).Increasing the electrical conductivity (EC) of the nutrient solution due to the addition of minerals causes a decrease in growth characteristics and a decrease in the concentration of nutrients in tomato plants(Rosadi et al, 2014). Changes in concentration of nutrients can alter the EC and pH of the nutrient solution, which reduce the osmotic potential of the solution and ultimately decrease the absorption of water and nutrients in rose ornamental plant(Kim et al, 2005). Decreasing the amount of nutrient elements in plantECBR and CR methods of nutrient solution can be changed by adding some nutrients and disrupting the balance of nutrients due to the different absorption of elements by plants and accumulation of specific elements such as Mg.…”

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confidence: 99%

Spectral composition of LED light differentially affects biomass, photosynthesis, nutrient profile, and foliar nitrate accumulation of lettuce grown under various replacement methods of nutrient solution

Soufi,

Roosta,

Fatehi

et al. 2023

Food Science & Nutrition

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To enhance crop yield and quality, plant cultivation in controlled‐growing systems is an alternative to traditional open‐field farming. The use of light‐emitting diode (LED) as an adjustable light source represents a promising approach to improve plant growth, metabolism, and function. The objective of this study was to assess the impact of different light spectra (red, red/blue (3:1), blue, and white) with an emission peak of around 656, 656, 450, and 449 nm, respectively, under various replacement methods of nutrient solution (complete replacement (CR), EC‐based replacement (ECBR), and replacing based on plant needs (RBPN)), on biomass, physiological traits, and macro‐ and micronutrient contents of two best‐known lettuce varieties, Lollo Rossa (LR) and Lollo Bionda (LB), in the nutrient film technique (NFT) hydroponic system. The results indicated that mix of red and blue LED spectra under RBPN method is the most effective treatment to enhance fresh and dry weights of lettuce plants. In addition, red LED spectrum under RBPN, and red and blue light under ECBR nutrient solution significantly increased leaf stomatal conductance, net photosynthesis and transpiration rate, and intercellular CO2 concentration of LR variety. Phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mn) content in LR variety, and iron (Fe), zinc (Zn), copper (Cu), and manganese (Mn) content in both varieties increased upon exposure to blue and red LED light spectrum with RBPN method. Our results suggest that exposure to combination of red and blue light along with feeding plants using RBPN and ECBR methods can increase absorption of macro‐ and micronutrient elements and improve photosynthetic properties, and eventually increase lettuce yield with lower nitrate accumulation.

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Effect of Hydroponic Solution pH on the Growth of Greenhouse Rose

Cited by 6 publications

References 15 publications

Computer-Integrated Device for Acidity Measurement Monitoring in Greenhouse Conditions with Compensation of Destabilizing Factors

Computer-Integrated Device for Acidity Measurement Monitoring in Greenhouse Conditions with Compensation of Destabilizing Factors

Effect of Different K+/Ca2+ Ratios on Yield, Quality and Physiological Disorder in Soilless Strawberry Cultivation

Spectral composition of LED light differentially affects biomass, photosynthesis, nutrient profile, and foliar nitrate accumulation of lettuce grown under various replacement methods of nutrient solution

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