scholarly journals Production of Formosa papaya seedlings irrigated with wastewater and application of biostimulant

2020 ◽  
Vol 11 ◽  
pp. e3153
Author(s):  
Elias Ariel Moura ◽  
Luana Mendes Oliveira ◽  
Vander Mendonça ◽  
Luciana Medeiros de Freitas Mendonça ◽  
Francisco Romário Andrade Figueiredo ◽  
...  
Keyword(s):  
Crop Production ◽  
Qualitative Data ◽  
Carica Papaya ◽  
Potable Water ◽  
Wastewater Reuse ◽  
Fish Farming ◽  
Fruit Trees ◽  
Content Index ◽  
Number Of Leaves ◽  
High Concentrations

Papaya (Carica papaya L.) is one of the leading fruit trees in Brazil, mainly in the Northeast region. However, some regions suffer from water scarcity, making wastewater reuse a viable alternative for crop production. Also, biostimulants may be used to maximize papaya growth and development. Thus, this work aimed to evaluate the use of Acadian® biostimulant in the growth of Formosa papaya seedlings irrigated with different concentrations of fish-farming wastewater. The experiment was block randomized in a 2 x 5 factorial scheme, use and non-use of biostimulant and five concentrations of wastewater (0, 10, 20, 30, and 40%) diluted in potable water, with four replicates. Qualitative data were compared by t-test at 5% probability, and quantitative data were submitted to regression analysis. Results showed that high concentrations of wastewater negatively affect the production of Formosa papaya seedlings. Acadian® negatively influences plant height, number of leaves, and the ratio between shoot and root. However, the seaweed biostimulant positively influenced the chlorophyll content index.

scholarly journals Investigating suitability of treated wastewater for agriculture in Hawassa, Sidama region, Ethiopia

2021 ◽  
Vol 10 (2) ◽  
pp. 59-65
Author(s):  
Kannan Narayanan ◽  
Ayele Getachew
Keyword(s):  
Crop Production ◽  
Wastewater Reuse ◽  
Fruit Trees ◽  
Sewage Water ◽  
Quality Parameters ◽  
Treated Wastewater ◽  
Soil Parameters ◽  
Treated Water ◽  
Fodder Crops ◽  
Continuous Use

This study is based on the quality of wastewater from Hawassa University surroundings, which was assessed to determine its suitability for irrigation purposes during 2019. Grab samples of influent and the treated water were taken for assessing for quality parameters. The study revealed that the treated water could be used for irrigation purpose with some moderate restrictions. Even though Electrical Conductivity (EC) and Total Dissolved Solids (TDS) permit to irrigate fruit trees and fodder crops, there is a risk of soil degradation due to high value of Sodium Adsorption Ratio (SAR). Results also indicated that carbonate, potassium and phosphate exceeded the specified limits for wastewater reuse in agriculture. Despite increased nutritive elements, continuous use of treated sewage water for irrigation will make the soil acidic. Analysis of soil parameters indicated that there is an increase in nitrogen, phosphate and potassium nutrient levels considerably to benefit crop production but increase in soil EC is a serious concern. Int. J. Agril. Res. Innov. Tech. 10(2): 59-65, December 2020

scholarly journals Production of Piptadenia stipulacea (Benth.) Ducke seedlings irrigated with fish farming wastewater

2017 ◽  
Vol 21 (6) ◽  
pp. 386-391
Author(s):  
João P. N. de Almeida ◽  
Rômulo M. O. de Freitas ◽  
Narjara W. Nogueira ◽  
Francisco de A. de Oliveira ◽  
Hugo Ferreira ◽  
...  
Keyword(s):  
Leaf Area ◽  
Biomass Accumulation ◽  
Fish Farming ◽  
Initial Growth ◽  
Unit Leaf ◽  
Content Index ◽  
Number Of Leaves ◽  
Area Unit ◽  
Leaf Area Unit ◽  
Supply Water

ABSTRACT The objective of this study was to evaluate the growth of ‘jurema-branca’ seedlings (Piptadenia stipulacea (Benth.) Ducke.), irrigated with effluent from fish farming in order to meet the nutritional demand in the initial growth stage. The treatments consisted in the dilution of fish farming wastewater in different concentrations (0, 25, 50, 75 and 100%) with supply water. Seeds were sown in 0.9-L polyethylene bag containing a mixture of soil and manure. At 54 days after sowing the shoot length, stem diameter, height/diameter ratio, number of leaves, leaf area, unit leaf area, dry matter of stem, leaves, shoots, roots and total, chlorophyll content index and Dickson quality index were evaluated. The growth of ‘jurema-branca’ seedlings is favored by the dilution of 25% of fish farming wastewater in the supply water. Using up to 25% of the concentration of the fish farming effluent does not significantly affect the dry biomass accumulation in ‘jurema-branca’ seedlings, in relation to the control. The reuse of fish farming wastewater diluted at proportion of up to 25% is a viable alternative to meet the water demand in the production of forest seedlings.

Plant nematodes associated with fruit trees in northern Australia

1981 ◽  
Vol 21 (108) ◽  
pp. 129 ◽  
Author(s):  
MR Sauer
Keyword(s):  
Carica Papaya ◽  
Fruit Trees ◽  
Soil Samples ◽  
Parasitic Nematodes ◽  
Northern Australia ◽  
Radopholus Similis ◽  
Plant Parasitic Nematodes ◽  
Rotylenchulus Reniformis ◽  
Musa Sp ◽  
Tylenchulus Semipenetrans

Sixteen genera of plant parasitic nematodes were found in 64 soil samples taken around fruit trees of 20 different genera at Kununurra, Darwin, or Adelaide River. Hemicriconemoides cocophilus, Basirolaimus seinhorsti, Rotylenchulus reniformis, Helicotylenchus s p p., and Xiphinema s p p. were found in more than 25% of samples, and Meloidogyne spp.in 16%. Paratrichodorus minor and Rotylenchus incultus were common at Kununurra. Nematodes found in plant roots at Darwin included M. javanica and R. reniformis on Carica papaya, Radopholus similis on Musa sp., Scutellonema brachyurum on Spondias cytherea. Tylenchulus semipenetrans was found in Citrus sp. roots at Adelaide River. Helicotylenchus dihystera was found in roots of Annona spp. at both these places.

Technical-economic modelling of integrated water management: wastewater reuse in a French island

2001 ◽  
Vol 43 (10) ◽  
pp. 67-74 ◽  
Author(s):  
P. Xu ◽  
F. Valette ◽  
F. Brissaud ◽  
A. Fazio ◽  
V. Lazarova
Keyword(s):  
Water Management ◽  
Water Resources ◽  
Potable Water ◽  
Public Attitudes ◽  
Wastewater Reuse ◽  
Cost Effective ◽  
Economic Modelling ◽  
Wastewater Reclamation ◽  
Management Scenarios ◽  
Wastewater Reclamation And Reuse

An integrated technical-economic model is used to address water management issues in the French island of Noirmoutier. The model simulates potable water production and supply, potable and non potable water demand and consumption, wastewater collection, treatment and disposal, water storage, transportation and reuse. A variety of water management scenarios is assessed through technical, economic and environmental evaluation. The scenarios include wastewater reclamation and reuse for agricultural and landscape irrigation as well as domestic non potable application, desalination of seawater and brackish groundwater for potable water supply. The study shows that, in Noirmoutier, wastewater reclamation and reuse for crop irrigation is the most cost-effective solution to the lack of water resources and the protection of sensitive environment. Some water management projects which are regarded as having less economic benefit in the short-term may become competitive in the future, as a result of tightened environmental policy, changed public attitudes and advanced water treatment technologies. The model provides an appropriate tool for water resources planning and management.

scholarly journals Governing Transactions and Interdependences between Linked Value Chains in a Circular Economy: The Case of Wastewater Reuse in Braunschweig (Germany)

2018 ◽  
Vol 10 (4) ◽  
pp. 1125 ◽  
Author(s):  
Oliver Maaß ◽  
Philipp Grundmann
Keyword(s):  
Wastewater Treatment ◽  
Circular Economy ◽  
Crop Production ◽  
Local Level ◽  
Wastewater Reuse ◽  
Value Chains ◽  
Governance Structures ◽  
Structured Interviews ◽  
Agriculture Sector ◽  
Agricultural Wastewater

Reusing wastewater in agriculture has attracted increasing attention as a strategy to support the transition towards the circular economy in the water and agriculture sector. As a consequence, there is great interest in solutions for governing the transactions and interdependences between the associated value chains. This paper explores the institutions and governance structures for coordinating transactions and interdependences between actors in linked value chains of wastewater treatment and crop production. It aims to analyze how transactions and interdependences shape the governance structures for reusing wastewater at the local level. A transaction costs analysis based on data from semi-structured interviews and a questionnaire is applied to the agricultural wastewater reuse scheme of the Wastewater Association Braunschweig (Germany). The results show that different governance structures are needed to match with the different properties and requirements of the transactions and activities between linked value chains of wastewater treatment and crop production. Interdependences resulting from transactions between wastewater providers and farmers increase the need for hybrid and hierarchical elements in the governance structures for wastewater reuse. The authors conclude that aligning governance structures with transactions and interdependences is key to efficiently governing transactions and interdependences between linked value chains in a circular economy.

Integrated fish farming: An international effort

1986 ◽  
Vol 1 (3) ◽  
pp. 127-130 ◽  
Author(s):  
Gerald Schroeder
Keyword(s):  
Green Manure ◽  
Crop Production ◽  
Crop Residues ◽  
Fish Farming ◽  
Microbial Flora ◽  
Fish Pond ◽  
Livestock Manure ◽  
International Effort ◽  
The World ◽  
Home Consumption

AbstractIn much of the developing world, the high cost of purchased feeds makes meat and milk too expensive to be consumed by the producers' own families. A fish pond integrated with livestock or crop production provides an important source of animal protein for home consumption or sale. This protein involves almost no cash costs, since the needed nutrients and energy are supplied by crop residues, green manure, livestock manure and sunlight. Conversion of manure into animal flesh is possible because the anoxic sediments support a microbial flora similar to that of the rumen. Although integrated fish farming has been practiced for thousands of years in China, it has not yet been successfully adapted to all regions for which it potentially is applicable. A program in Wuxi, China brings together students and scientists from all over the world who are working towards that goal.

Effect of non-antifungal agrochemicals on the pathogenic fungus Cryptococcus gattii

2019 ◽  
Vol 58 (1) ◽  
pp. 47-53 ◽  
Author(s):  
Hellem Cristina Silva Carneiro ◽  
Noelly Queiroz Ribeiro ◽  
Rafael Wesley Bastos ◽  
Daniel Assis Santos
Keyword(s):  
Crop Production ◽  
Pathogenic Fungus ◽  
Cryptococcus Gattii ◽  
Agricultural Products ◽  
Cross Resistance ◽  
Human Pathogens ◽  
High Concentrations ◽  
Susceptibility Tests ◽  
Susceptible Subpopulations

Abstract The chemical control of pests and weeds is employed to improve crop production and the quality of agricultural products. The intensive use of pesticides, however, may cause environmental contamination, thus altering microbial communities. Cryptococcus gattii is an environmental yeast and the causative agent of cryptococcosis in both humans and animals. Up to this day, the effects of agrochemicals on human pathogens living in nature are still widely unknown. In this work, we analyzed the susceptibility of C. gattii to nonfungicide agrochemicals (herbicides and insecticides). Microdilution and drug-combination susceptibility tests were performed for the herbicides flumioxazin (FLX), glyphosate (GLY), isoxaflutole (ISO), pendimethalin (PEND), and also for the insecticide fipronil (FIP). Moreover, these compounds were combined with the clinical antifungals amphotericin B and fluconazole. The MIC values found for the agrochemicals were the following: < 16 μg/ml, for flumioxazin; 128 to 256 μg/ml, for FIP, ISO, and PEND; and >256 μg/ml, for GLY. Synergistic and antagonistic interactions, depending on the strain and concentration tested, were also observed. All strains had undergone adaptation to increasing levels of agrochemicals, in order to select the less susceptible subpopulations. During this process, one C. gattii strain (196 L/03) tolerated high concentrations (50 to 900 μg/ml) of all pesticides assessed. Subsequently, the strain adapted to flumioxazin, isoxaflutole and pendimethalin showed a reduction in the susceptibility to agrochemicals and clinical antifungals, suggesting the occurrence of cross-resistance. Our data point to the risk of exposing C. gattii to agrochemicals existing in the environment, once it might impact the susceptibility of clinical antifungals.

scholarly journals Purification of papain from fresh latex of Carica papaya

2000 ◽  
Vol 43 (5) ◽  
pp. 501-507 ◽  
Author(s):  
Rubens Monti ◽  
Carmelita A. Basilio ◽  
Henrique C. Trevisan ◽  
Jonas Contiero
Keyword(s):  
Carica Papaya ◽  
Specific Activity ◽  
Polyacrylamide Gel ◽  
Single Band ◽  
Enzymatic Assays ◽  
Papaya Latex ◽  
High Concentrations ◽  
Natural Inhibitors

In the present study we wish to report a method of crystallizing papain from fresh papaya latex which gave higher yields than previously reported. This method does not involve the use of sulphydryl reagents. The papain thus obtained is practically pure and shows a single band when submitted to electrophoresis on polyacrylamide gel, and is identical to the papain obtained by other methods. In routine enzymatic assays, specific activity was measured using Z-gly-pNP and BAEE as substrates. Papain crystallized by this method, without the use of high concentrations of salts or thiol-containing substances such as cysteine and dithiothreitol, is obtained in the form of a complex with natural inhibitors existent in latex which can be removed by dialysis.

Segregating Shelter

2013 ◽  
Vol 647 (1) ◽  
pp. 268-299 ◽  
Author(s):  
Stefanie DeLuca ◽  
Philip M. E. Garboden ◽  
Peter Rosenblatt
Keyword(s):  
Low Income ◽  
Qualitative Data ◽  
Residential Choice ◽  
Housing Projects ◽  
Voucher Program ◽  
Section 8 ◽  
Housing Choice Voucher Program ◽  
Poor Families ◽  
Housing Search ◽  
High Concentrations

Individuals participating in the HUD Housing Choice Voucher program, formerly Section 8, can rent units in the private market and are not tied to public housing projects in a specific neighborhood. We would expect vouchers to help poor families leave the ghetto and move to more diverse communities with higher socioeconomic opportunity, but many voucher holders remain concentrated in poor, segregated communities. We use longitudinal qualitative data from one hundred low-income African American families in Mobile, Alabama, to explore this phenomenon, finding that tenants’ limited housing search resources, involuntary mobility, landlord practices, and several aspects of the voucher program itself limit families’ ability to escape disadvantaged areas. We also find that the voucher program’s regulations and funding structures do not incentivize housing authorities to promote neighborhood mobility and residential choice. This combination of forces often keeps voucher recipients in neighborhoods with high concentrations of poor and minority residents.

scholarly journals The Constraints Experienced by Krishi Vigyan Kendra (KVK) Trainees in Forming Entrepreneurial Units

2020 ◽  
pp. 112-117
Author(s):  
Raja Yadav ◽  
K. Ponnusamy ◽  
H. R. Meena ◽  
Kalyan Mandi
Keyword(s):  
Digital Literacy ◽  
Crop Production ◽  
Fish Farming ◽  
Training Programme ◽  
Science Center ◽  
Dairy Processing ◽  
Government Rules ◽  
Perceived Constraints ◽  
Marketing Operation ◽  
Entrepreneurial Society

Entrepreneurship in agriculture and allied activities provide better income generating and employment opportunities among the rural households. With changes like globalization, deregulation, open competition and technological change taking place, our society is becoming an entrepreneurial society. However, in an entrepreneurial society, individuals face a tremendous challenge in running an enterprise. In this context, the study was purposively conducted in Krishi Vigyan Kendra (Farm Science Center) operating under ICAR-NDRI which imparts regular training to farmers, youth and women on major areas of agriculture such as crop production, dairy farming, dairy processing, vermiculture, beekeeping, fish farming and home science. A total of twenty respondents/entrepreneurs; who had previously attended entrepreneurship training programme were finally selected based on random sampling. Therefore, entrepreneurs from various sectors i.e. four in seed production (4), beekeeping (4), vermi-composting (3), dairy processing (4), fish farming (3) and home science (2) were finally selected. The constraints were operationalised as certain irresistible forces which are creating obstacles in establishment and running of entrepreneurial unit like constraints related to establishment of farm enterprise, production, marketing and government rules and regulation were identified. The major constraints in establishment of farm enterprise was lack of new idea for starting new entrepreneurial ventures, high-cost and non-availability of input was the major production related constraints. In case of marketing, operation of unorganized agricultural market was the major perceived constraints whereas lack of digital literacy such as digital mode of payment was the major constraint highlighting the inefficiency of government rules and regulations.

Sign in / Sign up

Export Citation Format

Share Document