Fiber optic spectrophotometry monitoring of plant nutrient deficiency under hydroponic culture conditions

1999 ◽  
Author(s):  
Oi Wah Liew ◽  
William S. L. Boey ◽  
Anand K. Asundi ◽  
Jun-Wei Chen ◽  
Duo-Min He
Keyword(s):  
Fiber Optic ◽  
Nutrient Deficiency ◽  
Culture Conditions ◽  
Hydroponic Culture ◽  
Plant Nutrient

Plant Nutrient Deficiency Symptoms

2003 ◽  
Vol 65 (4) ◽  
pp. 246-246
Author(s):  
David R. Hershey
Keyword(s):  
Nutrient Deficiency ◽  
Plant Nutrient ◽  
Deficiency Symptoms

scholarly journals Sistem Pakar dalam Menganalisis Defisiensi Nutrisi Tanaman Hidroponik Menggunakan Metode Certainty Factor

2021 ◽  
pp. 203-208
Author(s):  
Yerri Kurnia Febrina ◽  
Sarjon Defit ◽  
Gunadi Widi Nurcahyo
Keyword(s):  
Expert System ◽  
Nutrient Deficiency ◽  
Nutrient Content ◽  
Nutritional Deficiency ◽  
Nutritional Deficiencies ◽  
Plant Nutrient ◽  
Certainty Factor ◽  
Plant Parts ◽  
Computer Scientists ◽  
Good Nutrition

Currently the Expert system has become a field of research for computer scientists as well as agricultural scientists for applications in various information development. The Expert System can be designed to simulate one or more of the ways an agricultural expert uses his knowledge and experience in making the diagnosis and passing on the necessary recommendations regarding nutritional deficiencies. Nutrient deficiency is a lack of food for survival in plants. The nutrient content of plant parts, especially the leaves, is very relevant to be used to identify nutritional deficiencies. Provide the results of a diagnosis of nutritional deficiency to farmers to be a benchmark for improving plant nutrients and providing good nutrition for hydroponic plants. The data used are nutritional deficiency data and symptoms as well as nutritional solutions obtained from farmer data at the Payakumbuh City Agriculture Office. The method used in this expert system is the Certainty Factor (CF) method. This method provides a diagnosis in the form of certainty or uncertainty of conditions in the rules used to conclude. The results of testing this method showed as many as 12 nutritional deficiencies were detected with 41 symptoms experienced. So that it can measure the level of nutritional deficiency that occurs. Expert System in Analyzing Hydroponic Plant Nutrient Deficiency Using Certainty Factor Method can show that predictions are almost 94% accurate.

scholarly journals Generation of Miniaturized Ovaries by in Vitro Culture From Mouse Gonads

2021 ◽  
Author(s):  
Si Won Jang ◽  
Hoon Jang ◽  
Hyun Woo Choi
Keyword(s):  
Ovarian Development ◽  
Primordial Germ Cells ◽  
Nutrient Deficiency ◽  
Culture Conditions ◽  
The Body ◽  
Reproductive Age ◽  
Considerable Research ◽  
Complex Process ◽  
Genetic And Environmental Factors

Abstract The incidence of infertility among individuals of reproductive age has been growing due to genetic and environmental factors, and considerable research efforts are focused on solving this issue. Ovarian development is an overly complex process in the body, involving the interaction between primordial germ cells and gonad somatic cells. However, follicles located in the center of the in vitro ovary are poorly formed or die owing to ovarian complexity, nutrient deficiency, and signaling deficiency. In the present study, we optimized methods for dissociating gonads and culture conditions for the in vitro generation of miniaturized ovaries. The gonads from embryos were dissociated into cell masses and cultured on a Transwell-COL membrane for 3~5 weeks. Approximately 12 follicles were present per in vitro ovary. We observed that miniaturized ovaries successfully matured to MII oocytes in vitro from 150 to 100 µm gonad masses. This method will be useful for investigating follicle development and oocyte production.

scholarly journals CONTINUOUS USE OF PLANT NUTRIENT SOLUTION FOR HYDROPONIC CULTURE OF SWEETPOTATO:IMPLICATIONS AND EFFECTS

HortScience ◽  
1994 ◽  
Vol 29 (7) ◽  
pp. 731d-731
Author(s):  
A.A. Trotman ◽  
P.P. David ◽  
D.G. Mortley ◽  
G.W. Carver
Keyword(s):  
Plant Growth ◽  
Nutrient Solution ◽  
Hydroponic Culture ◽  
Root Production ◽  
Plant Nutrient ◽  
Storage Root ◽  
Root Yield ◽  
Solution Composition ◽  
Greenhouse Study ◽  
Continuous Use

In a greenhouse study, continuous use of the same plant nutrient solution for hydroponic culture of sweetpotato was investigated to determine the effect on storage root yield, plant growth and nutrient solution composition. Plants were grown for 120 days under continuous flow from a 30.4-liter reservoir. Plant growth was compared when nutrient solution was changed at 14-day intervals and when nutrient solution was not changed but nutrients replenished through addition of a Modified half-Hoagland's (N:K=1:2.4) plant nutrient solution when volume in reservoir was -10 liters. Storage root yield was significantly decreased (181 vs 310.3 g/plant) and foliar biomass was significantly increased (372.4 vs 2% g/plant) when nutrient solution was not changed Nitrate and phosphate concentrations decreased in the plant nutrient over the duration of the experiment while sulfate and chloride concentrations increased. Salinity and electrical conductivity were monitored at 2-day intervals and increased with duration of the crop. Increased foliage production may have been the result of nitrogen replenishment going largely for foliage rather than storage root production. It may be that continuous use of the same plant nutrient solution as practiced in this study, resulted in lowered phosphate and nitrate concentrations that limited uptake of these ions by sweetpotato plants, thus reducing yield

Noninvasive detection of plant nutrient stress using fiber optic spectrophotometry

2001 ◽  
Author(s):  
Jun-Wei Chen ◽  
Anand K. Asundi ◽  
Oi Wah Liew ◽  
William S. L. Boey
Keyword(s):  
Fiber Optic ◽  
Nutrient Stress ◽  
Noninvasive Detection ◽  
Plant Nutrient

Carbon — A plant nutrient, deficiency and sufficiency

1990 ◽  
Vol 13 (9) ◽  
pp. 1073-1078 ◽  
Author(s):  
N. Schwarz ◽  
B. R. Strain
Keyword(s):  
Nutrient Deficiency ◽  
Plant Nutrient

scholarly journals Physiological and transcriptomic responses to N-deficiency and ammonium: nitrate shift in Fugacium kawagutii (Symbiodiniaceae)

2020 ◽  
Author(s):  
Tangcheng Li ◽  
Xibei Chen ◽  
Senjie Lin
Keyword(s):  
Energy Production ◽  
Nutrient Transport ◽  
Nutrient Deficiency ◽  
Culture Conditions ◽  
Coral Host ◽  
Expression Studies ◽  
Transcriptomic Responses ◽  
N Deficiency ◽  
Gene Expression Studies ◽  
Growth Energy

AbstractSymbiodiniaceae are the source of essential coral symbionts of reef building corals. The growth and density of endosymbiotic Symbodiniaceae within the coral host is highly dependent on nutrient availability, yet little is known about how Symbiodiniaceae respond to the dynamics of the nutrients, including switch between different chemical forms and changes in abundance. In this study, we investigated physiological, cytometric, and transcriptomic responses in Fugacium kawagutii to nitrogen (N)-nutrient deficiency and different chemical N forms (nitrate and ammonium) in batch culture conditions. We mainly found that ammonium was consumed faster than nitrate when provided separately, and was preferentially utilized over nitrate when both nitrogen compounds were supplied at 1:2, 1:1 and 2:1 molarity ratios. Besides, N-deficiency caused decreases in growth, energy production, antioxidative capacity and investment in photosynthate transport but increased energy consumption. Growing on ammonium produced a similar cell yield as nitrate, but with a decreased investment in nutrient transport and assimilation. These all have important implications of N nutrient to support symbiosis in coral ecosystem, especially regarding ammonium. In addition, by integrating our current results with previous data, we identified ten highly and stably expressed genes as candidate reference genes, which will be potentially useful for gene expression studies in the future.

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