scholarly journals Adaptive Fertigation System Using Hybrid Vision-Based Lettuce Phenotyping and Fuzzy Logic Valve Controller Towards Sustainable Aquaponics

2021 ◽  
Vol 25 (5) ◽  
pp. 610-617
Author(s):  
Ronnie S. Concepcion II ◽  
Sandy C. Lauguico ◽  
Jonnel D. Alejandrino ◽  
Argel A. Bandala ◽  
Edwin Sybingco ◽  
...  
Keyword(s):  
Precision Agriculture ◽  
Fuzzy Inference ◽  
Nutrient Use Efficiency ◽  
Chemical Waste ◽  
Inference System ◽  
Nutrient Film Technique ◽  
Nutrient Use ◽  
Use Efficiency ◽  
Valve Control ◽  
Non Destructive

Sustainability is a major challenge in any plant factory, particularly those involving precision agriculture. In this study, an adaptive fertigation system in a three-tier nutrient film technique aquaponic system was developed using a non-destructive vision-based lettuce phenotype (VIPHLET) model integrated with an 18-rule Mamdani fuzzy inference system for nutrient valve control. Four lettuce phenes, that is, fresh weight, chlorophylls a and b, and vitamin C concentrations as outputted by the genetic programming-based VIPHLET model were optimized for each growth stage by injecting NPK nutrients into the mixing tank, as determined based on leaf canopy signatures. This novel adaptive fertigation system resulted in higher nutrient use efficiency (99.678%) and lower chemical waste emission (14.108 mg L-1) than that by manual fertigation (92.468%, 178.88 mg L-1). Overall, it can improve agricultural malpractices in relation to sustainable agriculture.

Sustainable Agriculture

2019 ◽  
pp. 107-129
Author(s):  
Gordon Conway ◽  
Ousmane Badiane ◽  
Katrin Glatzel
Keyword(s):  
Environmental Impact ◽  
Sustainable Agriculture ◽  
Precision Agriculture ◽  
Natural Capital ◽  
Nutrient Use Efficiency ◽  
Ghg Emissions ◽  
Ecological Intensification ◽  
Agriculture Sector ◽  
Nutrient Use ◽  
Use Efficiency

This chapter proposes that the way forward will be a prosperous and sustainable agriculture sector deeply rooted in the concept of sustainable intensification (SI): producing more with less, using inputs like seeds, fertilizers, and pesticides more prudently, adapting to climate change, reducing GHG emissions, improving natural capital such as soil moisture capacity and the diversity of pests' enemies, and building resilience. One approach to SI is to employ precision agriculture, ensuring that inputs—whether nutrients, pesticides, seeds, or water—are used in a precise, sparing, effective, and strategic way in order to minimize their environmental impact. Thus microdosing permits the prudent, targeted use of inputs such as fertilizers, thereby improving soil quality and moisture while reducing the environmental impact that excessive use can cause. It also reduces costs and helps improve nutrient use efficiency and protection against drought. Precision farming focuses on just one aspect of SI. More generally, it is a concept that includes three mutually reinforcing pillars: ecological intensification, genetic intensification, and socioeconomic intensification.

scholarly journals Precision Agriculture and Irrigation: Current U.S. Perspectives

2020 ◽  
Vol 63 (1) ◽  
pp. 57-67
Author(s):  
Steven R. Evett ◽  
Susan A. O’Shaughnessy ◽  
Manuel A. Andrade ◽  
William P. Kustas ◽  
M. C. Anderson ◽  
...  
Keyword(s):  
Decision Support ◽  
Internet Of Things ◽  
Precision Agriculture ◽  
Water Productivity ◽  
Nutrient Use Efficiency ◽  
List Type ◽  
Nutrient Use ◽  
Use Efficiency ◽  
And Control ◽  
The Internet Of Things

Highlights.Precision agriculture (PA) applications in irrigation are stymied by lack of decision support systems.Modern PA relies on sensor systems and near real-time feedback for irrigation decision support and control.Sophisticated understanding of biophysics and biological systems now guides site-specific irrigation.The internet of things (IOT) enables new ways to increase yield per unit of water used and nutrient use efficiency. Keywords: Crop water productivity, Decision support system, Internet of things, Remote sensing, SCADA, Soil water content.

scholarly journals Opportunities and Challenges to Sustainability in Aquaponic Systems

2011 ◽  
Vol 21 (1) ◽  
pp. 6-13 ◽  
Author(s):  
Richard V. Tyson ◽  
Danielle D. Treadwell ◽  
Eric H. Simonne
Keyword(s):  
Production Systems ◽  
Nutrient Use Efficiency ◽  
Economic Benefits ◽  
Nitrifying Bacteria ◽  
Floating Raft ◽  
Nutrient Film Technique ◽  
Nutrient Use ◽  
Use Efficiency ◽  
Aquaculture Wastewater ◽  
Biological Nitrogen

Aquaponics combines the hydroponic production of plants and the aquaculture production of fish into a sustainable agriculture system that uses natural biological cycles to supply nitrogen and minimizes the use of nonrenewable resources, thus providing economic benefits that can increase over time. Several production systems and media exist for producing hydroponic crops (bench bed, nutrient film technique, floating raft, rockwool, perlite, and pine bark). Critical management requirements (water quality maintenance and biofilter nitrification) for aquaculture need to be integrated with the hydroponics to successfully manage intensive aquaponic systems. These systems will be discussed with emphasis on improving sustainability through management and integration of the living components [plants and nitrifying bacteria (Nitrosomonas spp. and Nitrobacter spp.)] and the biofilter system. Sustainable opportunities include biological nitrogen production rates of 80 to 90 g·m−3 per day nitrate nitrogen from trickling biofilters and plant uptake of aquaculture wastewater. This uptake results in improved water and nutrient use efficiency and conservation. Challenges to sustainability center around balancing the aquaponic system environment for the optimum growth of three organisms, maximizing production outputs and minimizing effluent discharges to the environment.

Tomato Production in Florida Using Fertigation Technology

EDIS ◽  
2020 ◽  
Vol 2020 (5) ◽  
Author(s):  
Mary Dixon ◽  
Guodong Liu
Keyword(s):  
Nutrient Use Efficiency ◽  
Health Benefits ◽  
Vegetable Crop ◽  
High Demand ◽  
Tomato Production ◽  
Nutrient Use ◽  
Use Efficiency

Tomato is in high demand because of its taste and health benefits. In Florida, tomato is the number one vegetable crop in terms of both acreage and value. Because of its high value and wide acreage, it is important for tomato production to be efficient in its water and nutrient use, which may be improved through fertigation practices. Therefore, the objective of this new 7-page article is to disseminate research-based methods of tomato production utilizing fertigation to enhance yield and nutrient use efficiency. Written by Mary Dixon and Guodong Liu, and published by the UF/IFAS Horticultural Sciences Department.https://edis.ifas.ufl.edu/hs1392

Connecting Crop Nutrient Use Efficiency to Future Soil Productivity

2018 ◽  
Vol 102 (4) ◽  
pp. 8-10
Author(s):  
Fernando García ◽  
Andrés Grasso ◽  
María González Sanjuan ◽  
Adrián Correndo ◽  
Fernando Salvagiotti
Keyword(s):  
Nutrient Management ◽  
Nutrient Use Efficiency ◽  
Management Strategies ◽  
Crop Productivity ◽  
Soil Productivity ◽  
Nutrient Use ◽  
Grain Crop ◽  
Wide Scale ◽  
Use Efficiency

Trends over the past 25 years indicate that Argentina’s growth in its grain crop productivity has largely been supported by the depletion of the extensive fertility of its Pampean soils. Long-term research provides insight into sustainable nutrient management strategies ready for wide-scale adoption.

Improved nutrient management in cereals using Nutrient Expert and machine learning tools: Productivity, profitability and nutrient use efficiency

2021 ◽  
Vol 192 ◽  
pp. 103181
Author(s):  
Jagadish Timsina ◽  
Sudarshan Dutta ◽  
Krishna Prasad Devkota ◽  
Somsubhra Chakraborty ◽  
Ram Krishna Neupane ◽  
...  
Keyword(s):  
Machine Learning ◽  
Nutrient Management ◽  
Nutrient Use Efficiency ◽  
Learning Tools ◽  
Nutrient Use ◽  
Use Efficiency

scholarly journals Common Bean Yield and Zinc Use Efficiency in Association with Diazotrophic Bacteria Co-Inoculations

Agronomy ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 959
Author(s):  
Arshad Jalal ◽  
Fernando Shintate Galindo ◽  
Eduardo Henrique Marcandalli Boleta ◽  
Carlos Eduardo da Silva Oliveira ◽  
André Rodrigues dos Reis ◽  
...  
Keyword(s):  
Common Bean ◽  
Nutrient Use Efficiency ◽  
Growth Yield ◽  
Staple Food ◽  
Human Beings ◽  
Rhizobium Tropici ◽  
Nutrient Use ◽  
Zn Nutrition ◽  
Use Efficiency ◽  
Soil Zn

Enrichment of staple food with zinc (Zn) along with solubilizing bacteria is a sustainable and practical approach to overcome Zn malnutrition in human beings by improving plant nutrition, nutrient use efficiency, and productivity. Common bean (Phaseolus vulgaris L.) is one of a staple food of global population and has a prospective role in agronomic Zn biofortification. In this context, we evaluated the effect of diazotrophic bacterial co-inoculations (No inoculation, Rhizobium tropici, R. tropici + Azospirillum brasilense, R. tropici + Bacillus subtilis, R. tropici + Pseudomonas fluorescens, R. tropici + A. brasilense + B. subtilis, and R. tropici + A. brasilense + P. fluorescens) in association with soil Zn application (without and with 8 kg Zn ha−1) on Zn nutrition, growth, yield, and Zn use efficiencies in common bean in the 2019 and 2020 crop seasons. Soil Zn application in combination with R. tropici + B. subtilis improved Zn accumulation in shoot and grains with greater shoot dry matter, grain yield, and estimated Zn intake. Zinc use efficiency, recovery, and utilization were also increased with co-inoculation of R. tropici + B. subtilis, whereas agro-physiological efficiency was increased with triple co-inoculation of R. tropici + A. brasilense + P. fluorescens. Therefore, co-inoculation of R. tropici + B. subtilis in association with Zn application is recommended for biofortification and higher Zn use efficiencies in common bean in the tropical savannah of Brazil.

scholarly journals Plant Biostimulants from Cyanobacteria: An Emerging Strategy to Improve Yields and Sustainability in Agriculture

Plants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 643
Author(s):  
Gaia Santini ◽  
Natascia Biondi ◽  
Liliana Rodolfi ◽  
Mario R. Tredici
Keyword(s):  
Nutrient Use Efficiency ◽  
Biologically Active ◽  
Future Research ◽  
Plant Tolerance ◽  
Metabolic Plasticity ◽  
Nutrient Use ◽  
Cyanobacterial Species ◽  
Use Efficiency ◽  
Promising Source ◽  
Plant Treatment

Cyanobacteria can be considered a promising source for the development of new biostimulants as they are known to produce a variety of biologically active molecules that can positively affect plant growth, nutrient use efficiency, qualitative traits of the final product, and increase plant tolerance to abiotic stresses. Moreover, the cultivation of cyanobacteria in controlled and confined systems, along with their metabolic plasticity, provides the possibility to improve and standardize composition and effects on plants of derived biostimulant extracts or hydrolysates, which is one of the most critical aspects in the production of commercial biostimulants. Faced with these opportunities, research on biostimulant properties of cyanobacteria has undergone a significant growth in recent years. However, research in this field is still scarce, especially as regards the number of investigated cyanobacterial species. Future research should focus on reducing the costs of cyanobacterial biomass production and plant treatment and on identifying the molecules that mediate the biostimulant effects in order to optimize their content and stability in the final product. Furthermore, the extension of agronomic trials to a wider number of plant species, different application doses, and environmental conditions would allow the development of tailored microbial biostimulants, thus facilitating the diffusion of these products among farmers.

scholarly journals Developing green super rice varieties with high nutrient use efficiency by phenotypic selection under varied nutrient conditions

2019 ◽  
Vol 7 (3) ◽  
pp. 368-377 ◽  
Author(s):  
Zilhas Ahmed Jewel ◽  
Jauhar Ali ◽  
Yunlong Pang ◽  
Anumalla Mahender ◽  
Bart Acero ◽  
...  
Keyword(s):  
Nutrient Use Efficiency ◽  
Phenotypic Selection ◽  
Rice Varieties ◽  
Nutrient Use ◽  
High Nutrient ◽  
Use Efficiency ◽  
Nutrient Conditions
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