scholarly journals Design of Nutrition Automation on Lactuca Sativa NFT Hydroponic Systems

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Joko Slamet Saputro ◽  
Ulinnuha Latifa ◽  
Agus Ramelan
Keyword(s):  
Light Intensity ◽  
Plant Growth ◽  
Water Level ◽  
Lactuca Sativa ◽  
Water Levels ◽  
Research Focus ◽  
Hydroponic System ◽  
Hydroponic Systems ◽  
Water Acidity ◽  
Temperature Water

<p class="Abstract">This research focus on preserved nutrition on lettuce plants, as well as automation of other parameters that affect plant growth in NFT type hydroponic systems such as temperature, water acidity (pH), water level and light intensity. The automation of this hydroponic system includes the provision of nutrients according to the needs of plants by utilizing EC sensors, keeping the temperature of the water in accordance with plant specifications as well as water levels that are maintained.<em></em></p><p class="Keywords"> </p>

scholarly journals Integrated biomarker responses of the submerged macrophyte Vallisneria spiralis via hydrological processes from Lake Poyang, China

2018 ◽  
Vol 5 (12) ◽  
pp. 180729 ◽  
Author(s):  
Yong Ji ◽  
Zhidong Yao ◽  
Jie Zhang ◽  
Xueru Wang ◽  
Jixiang Luo ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Light Intensity ◽  
Water Level ◽  
Antioxidant Enzyme ◽  
Enzyme Activities ◽  
Antioxidant Enzyme Activity ◽  
Water Levels ◽  
Antioxidant Enzyme Activities ◽  
Wetland Plant ◽  
Lake Poyang

Vallisneria spiralis , a widely distributed wetland plant, was used to reveal how the light intensity at the top of the plant, plant morphology and antioxidant enzyme activity respond to different hydrologic conditions from Lake Poyang, China. By designing a laboratory experiment simulating historical water levels of low, normal and high wetland plant submersion, this study aimed to elucidate the effects of different levels of flooding on growth and antioxidant enzyme activity for V. spiralis . The results showed that the plant crown light intensity of the treated group and control group (CG) first decreased and then increased along with the seasonal variation of the water level. The maximum and minimum values of the plant crown light intensity were observed in April and July, respectively. Similar to the CG, V. spiralis from the normal and low water level (LWL) groups was measured and had higher plant height growth in the flooding period from May to June, and the entire plant biomass also showed a steady growth trend in the same period. However, the plant growth of the high water level (HWL) group was lower during the whole simulation period, with negative growth in July. Antioxidant enzyme activities changed with the seasonal temperature, and the activity of the CG showed a rising trend. Compared with those of the CG, the antioxidant enzyme activities of the HWL group showed a ‘bell shaped’ trend, which was first significantly induced and then significantly inhibited. In addition, the peroxidase (POD) and catalase (CAT) activities from the LWL group in April were also significantly induced. The integrated biomarker response (IBR) index showed that a comprehensive biological index could well reflect the effects of seasonal water levels in Poyang Lake on the growth of the wetland plant V. spiralis . This study indicated that high flooding levels had the strongest negative effect on the growth and enzyme activity of the submerged plant V. spiralis .

scholarly journals Fish Tank Monitoring System Using IoT

2020 ◽  
pp. 298-304
Author(s):  
Narayanaswamy Ramaiah ◽  
Deepa T. P ◽  
Sherwin Kopparam Sridhar ◽  
Nirlipta Chatterjee ◽  
Rahul S. N ◽  
...  
Keyword(s):  
Light Intensity ◽  
Environmental Change ◽  
Water Level ◽  
Real Time ◽  
Monitoring System ◽  
Automated System ◽  
Human Experimentation ◽  
Water Level Management ◽  
Fish Tank ◽  
Temperature Water

In day to day life human experimentation is tiresome and also gives improper outcomes for estimating the environmental change. In this paper we discuss how to replace manual maintenance of aquariums with an automated system using IoT to automatically monitor, control, and provide real-time status of pressure, temperature, water level, and the light intensity to applications running on user smartphones. It also contains water level management, which will monitor the conditions such as overflow and underflow of water level. The aquarium will perform the lighting automatically.

scholarly journals Differences in Inflorescence Numbers and Endogenous Gibberellic Acid Levels in ‘Afterglow’ Bougainvillea

2020 ◽  
Vol 30 (6) ◽  
pp. 650-653
Author(s):  
Mun Wye Chng ◽  
Kimberly A. Moore
Keyword(s):  
Abscisic Acid ◽  
Light Intensity ◽  
Plant Growth ◽  
Gibberellic Acid ◽  
Growth Regulators ◽  
Foliar Spray ◽  
Multiple Cues ◽  
Exogenous Aba ◽  
Long Day ◽  
Temperature Water

Bougainvillea (Bougainvillea sp.) plant inflorescence number will vary in response to multiple cues such as changes in temperature, water, light intensity, pruning, and photoperiod. Previous research reports that the application of plant growth regulators (PGRs) to bougainvillea grown under varying photoperiods improved inflorescence number, probably as a result of changes in gibberellic acid (GA) levels. There are many bioactive plant GAs, but we chose to investigate differences in gibberellic acid 3 (GA3) levels and inflorescence number in response to the application of ethephon (2-cholorethylphosponic acid) or abscisic acid (ABA) to ‘Afterglow’ bougainvillea (Bougainvillea ×buttiana) grown under 14-hour photoperiod [long-day (LD)] conditions. Plants were 5 inches tall with seven visible lateral nodes and were grown in a greenhouse in 4-inch pots filled with 5-mm coarse aquarium zeolite. Ethephon was applied as a foliar spray at 0.05, 0.07, 0.10, 0.15, or 0.20 mg/plant. ABA was applied as a soil drench at 1, 1.5, 3, 6, 8, or 10 mg/plant. Endogenous levels of GA3 were measured 1 and 48 days after treatment to calculate the change in GA3 (∆GA3). A short day (SD) control of 8 hours was included to measure differences in inflorescence number and ∆GA3 between photoperiods. ‘Afterglow’ plants grown under SD conditions had the greatest decrease in ∆GA3 (–1.09 µg·g–1) over 48 days and the most inflorescences (10.6) compared with LD control plants with a decrease in ∆GA3 of –0.09 µg·g–1 and fewer inflorescences (1.0). Plants grown under LD conditions and treated with 0.05 mg/plant ethephon had inflorescence numbers (9.6) and levels of ∆GA3 (–0.74 µg·g–1) similar to the SD control. As ethephon rate increased to more than 0.05 mg/plant, inflorescence number on LD plants decreased and ∆GA3 increased. Exogenous ABA rates of 1 mg/plant produced inflorescence numbers (1.4) and ∆GA3 (–0.10 µg·g–1) similar to the LD control. As the rate increased, ∆GA3 increased and inflorescence number decreased. Plants treated with ABA rates of 3 mg/plant and more were defoliated and had no inflorescences.

scholarly journals Water use efficiency, plant growth and vegetative traits of rubber (Hevea brasiliensis) seedlings grown using different growing media and water levels

2020 ◽  
pp. 1497-1505
Author(s):  
Monsuru Adekunle Salisu ◽  
Zulkefly Sulaiman ◽  
Ridzwan Che Rus ◽  
Mohd Yusoff A. Samad ◽  
Norhanizan Usaizan ◽  
...  
Keyword(s):  
Plant Growth ◽  
Water Use Efficiency ◽  
Water Level ◽  
Water Use ◽  
Biomass Production ◽  
Field Capacity ◽  
Water Levels ◽  
Peat Moss ◽  
Coconut Husk ◽  
Use Efficiency

The aim of this study was to evaluate the effects of soilless media and water levels on growth and physiological response of rubber plant. The four water levels were I50: 50%, I75: 75%, I100: 100% and I150: 150%) with three replications per water treatment and four soilless media. Water levels were determined as irrigation needed for the root zone in growing media to rise to field capacity I100:100%, at field capacity (FC). The experiment was laid out in randomized complete block design (RCBD) in factorial arrangement 3 x 4 with three replications. Soilless medium contains proportion of vermiculite, perlite, coconut husk, empty fruit bunch (EFB) compose, Christmas Island Rock Phosphate (CIRP), peat moss, urea-N and burnt rice husk coded as M1. Vermiculite, perlite, coconut husk, EFB, CIRP, peat moss, urea-N, sugarcane bagasse coded as M2. M3 is a commercial soilless medium and 100% soil was designated as control. The M1 significantly influenced almost all plant growth traits, noticeable in biomass production. Growth of plants in M1 corresponded to higher water use efficiency WUEinstantaneous and WUEintrinsic, the M1 increased plant growth like LAR, biomass production and root morphological traits. Shoot dry weight of the plant was greater (14.66 g/plant) when 150% was applied and significantly different from M2 (10.36 g/plant), M3 (4.73 g/plant) and M4 6.22 g/plant. Lower water level 50%, applied in plant grown in M1 (31.94 g/plant) recorded highest total shoot fresh weight (SFW). The results showed suitability of the soilless medium M1 and the 50% water level for rubber nursery planting. Consequently, it is recommended for planting where management and control of irrigation water are considered necessary in rubber plantation.

scholarly journals Classical Karst hydrodynamics: a shared aquifer within Italy and Slovenia

2014 ◽  
Vol 364 ◽  
pp. 499-504 ◽  
Author(s):  
L. Zini ◽  
C. Calligaris ◽  
E. Zavagno
Keyword(s):  
Comparative Analysis ◽  
Water Level ◽  
River Water ◽  
Water Table ◽  
Water Levels ◽  
Transboundary Aquifer ◽  
Precise Evaluation ◽  
Transit Times ◽  
Two Sectors ◽  
Temperature Water

Abstract. The classical Karst transboundary aquifer is a limestone plateau of 750 km2 that extends from Brkini hills in Slovenia to Isonzo River in Italy. For 20 years, and especially in the last two years, the Mathematic and Geosciences Department of Trieste University has run a monitoring project in order to better understand the groundwater hydrodynamics and the relation between the fracture and conduit systems. A total of 14 water points, including caves, springs and piezometers are monitored and temperature, water level and EC data are recorded. Two sectors are highlighted: the southeastern sector mainly influenced by the sinking of the Reka River, and a northwestern sector connected to the influent character of the Isonzo River. Water table fluctuations are significant, with risings of > 100 m. During floods most of the circuits are under pressure, and only a comparative analysis of water levels, temperature and EC permits a precise evaluation of the water transit times in fractured and/or karstified volumes.

scholarly journals Biocompatibility of Wheat and Tomato in a Dual Culture Hydroponic System

HortScience ◽  
1994 ◽  
Vol 29 (10) ◽  
pp. 1164-1165 ◽  
Author(s):  
Andrew C. Schuerger ◽  
Philip D. Laible
Keyword(s):  
Triticum Aestivum ◽  
Plant Growth ◽  
Dry Weight ◽  
Fruit Weight ◽  
Dual Culture ◽  
Lettuce Seedling ◽  
Tomato Plants ◽  
Hydroponic System ◽  
Hydroponic Systems ◽  
Allelopathic Compound

`Yecora Rojo' Wheat (Triticum Aestivum L.) And `Florida Petite' Tomato (Lycoper-Sicon Esculentum Mill.) Plants Were Grown In Monocultured Or Intercropped Recirculating Hydroponic Systems To Determine Whether Plant Growth Or Yield Would Be Affected By Intercropping. Mean Fruit Weight Was Slightly Lower (12%) For Intercropped Than For Monocultured Tomato Plants. The Number Of Tillers Per Plant Was Slightly Lower (7%) For Wheat, And Grain Dry Weight Per Plant And Mean Seed Dry Weight Were Slightly Higher (14% And 15%, Respectively) For Intercropped Than For Monocultured Plants. A Lettuce Seedling Bioassay Showed No Evidence Of Allelopathic Compound Accumulation In Monocultured Or Intercropped Hydroponic Systems.

Monitoring System of Hydroponic Using Solar Energy

2021 ◽  
Vol 02 (01) ◽  
Author(s):  
Muhammad Syahmi Kamarulzaman ◽  
◽  
Siti Amely Jumaat ◽  
Muhammad Nafis Ismail ◽  
Ahmad Fateh Mohd Nor ◽  
...  
Keyword(s):  
Solar Energy ◽  
Water Level ◽  
Monitoring System ◽  
Temperature Sensor ◽  
Ph Sensor ◽  
Hydroponic System ◽  
Level Sensor ◽  
Solar Powered ◽  
Temperature Water ◽  
Plantation System

This project aims to develop a solar powered hydroponic monitoring system. Hydroponic system is a plantation system that uses water as the medium instead of soil. The solar energy acts as the main source and a supply for the Arduino Uno, a microcontroller to control all the sensors, collecting the data and display the data to users. The sensors used were DS18B20 temperature sensor, propylene float water level sensor and pH sensor. These sensors will monitor those elements and helping the users in hydroponics system. An Arduino Ide software was used to develop a coding for the monitoring system. The value of temperature, water level and pH has been measured and collected to be analyzed. For conclusion, this project is successful in that the data collected satisfied the objective and from the result, it shows the effectiveness of solar powered hydroponic monitoring system.

AUTOMATIC WATER LEVEL MONITORING WITH IOT AND LPWAN

2019 ◽  
pp. 95-103
Author(s):  
Krum Videnov ◽  
Vanya Stoykova
Keyword(s):  
Water Level ◽  
Real Time ◽  
Early Warning ◽  
Water Sources ◽  
Water Levels ◽  
Water Level Fluctuations ◽  
Level Monitoring ◽  
Water Level Monitoring

Monitoring water levels of lakes, streams, rivers and other water basins is of essential importance and is a popular measurement for a number of different industries and organisations. Remote water level monitoring helps to provide an early warning feature by sending advance alerts when the water level is increased (reaches a certain threshold). The purpose of this report is to present an affordable solution for measuring water levels in water sources using IoT and LPWAN. The assembled system enables recording of water level fluctuations in real time and storing the collected data on a remote database through LoRaWAN for further processing and analysis.

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