Challenges of using organic fertilizers in hydroponic production systems

2016 ◽  
pp. 365-370 ◽  
Author(s):  
K.A. Williams ◽  
J.S. Nelson
Keyword(s):  
Production Systems ◽  
Organic Fertilizers

scholarly journals Assessment of Resilience of Pistachio Agroecosystems in Rafsanjan Plain in Iran

2019 ◽  
Vol 11 (6) ◽  
pp. 1656 ◽  
Author(s):  
Fatemeh Darijani ◽  
Hadi Veisi ◽  
Houman Liaghati ◽  
Mohammad Nazari ◽  
Kours Khoshbakht
Keyword(s):  
Production Systems ◽  
Maximum Sustainable Yield ◽  
Organic Fertilizers ◽  
Grassroots Organizations ◽  
Use Efficiency ◽  
Soil Fertility Index ◽  
Production Areas ◽  
Adaptive Resource ◽  
On Farm ◽  
Rafsanjan Plain

This study assessed the resilience of pistachio production systems in the Rafsanjan plain in Iran using an index of behavior-based indicators. One-hundred fifty pistachio orchards located in five major production areas were studied in 2016. The data was subjected to three-step multi-criteria analysis, including (i) normalization and aggregation; (ii) determination of the weights representing the priorities for each criterion and evaluation of the performance of each indicator; and (iii) comparison. The results showed that the study areas had problematic statuses regarding the indicators of membership in grassroots organizations, innate abilities, water sources, production stability, and insurance. They had critical or moderate statuses concerning the indicators of use of organic fertilizers, use of pesticides, soil fertility index, water-use efficiency (kg/m3), trust in government, access to advisor services (extension), on-the-job training, and diversity of marketing. They had positive levels for the indicators of productivity, diversity of cultivars, diversity of on-farm practices, and exchange of information. We recommend the enhancement of the transformability capacity in PPSs by changing the focus from optimal states and the determinants of maximum sustainable yield (MSY paradigm) to adaptive resource management that includes developing participatory platforms for collaboration of usage of water resources.

scholarly journals Assessment of Rice Farming Sustainability: Evidence from Indonesia Provincial Data

2020 ◽  
Vol 15 (8) ◽  
pp. 1323-1332
Author(s):  
Iim Mucharam ◽  
Ernan Rustiadi ◽  
Akhmad Fauzi ◽  
Harianto
Keyword(s):  
Production Systems ◽  
Farming System ◽  
Organic Fertilizers ◽  
Rice Farming ◽  
Social Dimensions ◽  
Five Dimensions ◽  
Dimensional Scaling ◽  
Rapid Appraisal ◽  
Short Period ◽  
Production Areas

Indonesia is rated the highest rice consumer and the third-largest producer in the world, consequently, farming is one of the most strategic production systems in the country. Therefore, this study aims to assess the sustainability of rice farming at the provincial level in Indonesia. Furthermore, 32 sustainability indicators, which are categorized into five dimensions, namely economic, ecological, social, technological, and institutional were used. The rapid appraisal approach (Rapsusagri), consisting of multi-dimensional scaling (MDS) analysis was adopted to assess the sustainability of rice farming. Monte Carlo simulation was used to define the validity and sensitivity analysis to assess the dominant attributes which affect sustainability. The result showed that the economic and social dimensions are at a better level, meanwhile the ecological, technological, and institutional still have various weaknesses and needs improvement. Furthermore, irrigated paddy areas, agricultural infrastructure, rice productivity, use of chemical and organic fertilizers, cropping index, land suitability, village accessibility, officers, and agricultural extension institution were pointed out as the leveraging indicators for sustaining the rice farming system. Also, provinces in Java Island were found to have higher sustainability levels than others. However, it is predicted that this condition will last for a short period due to rapid land conversion, therefore Indonesia needs to consider the development of rice production areas outside Java islands.

scholarly journals Sensory analysis of curly kale produced under conventional and hydroponic systems

2021 ◽  
Vol 24 ◽  
Author(s):  
Lorena Caroline da Silva ◽  
Daniella Martins Pimenta ◽  
Victor Augusto Forti ◽  
Fernando Cesar Sala ◽  
Simone Daniela Sartorio de Medeiros ◽  
...  
Keyword(s):  
Production Systems ◽  
Organic Fertilizers ◽  
Conventional System ◽  
Hydroponic System ◽  
Significant Difference ◽  
Sensory Analyses ◽  
Chlorophyll Index ◽  
Hydroponic Systems ◽  
The One ◽  
System F

Abstract The consumption and cultivation of curly kale in Brazil is recent and information on production systems and their acceptance by the consumer are scarce. The aim of this work was to evaluate the sensory characteristics of curly kales cultivated using the conventional and hydroponic systems, considering the treatments: cultivation under the conventional system, without fertilization (A), conventional system with organic fertilizers (C, E) and hydroponic system (F). The harvests were performed at 60, 90 and 120 days after planting for the plants cultivated using the conventional system and at 30 days for the hydroponic system. The total chlorophyll index content and the sensory analyses of ranking of difference and acceptance were analyzed. The lowest chlorophyll index in the curly kales was verified for the one cultivated under the hydroponic system. In the ranking test, the darkest green color was obtained for the curly kale produced using the conventional system and for the attributes aroma, sweet and bitter taste and crunchiness, there was no significant difference.

scholarly journals Compilation of Black Soldier Fly Frass Analyses

2021 ◽  
Author(s):  
Daniel Gärttling ◽  
Hannes Schulz
Keyword(s):  
Production Systems ◽  
Organic Fertilizer ◽  
Nutrient Release ◽  
Ammonium Nitrogen ◽  
Organic Fertilizers ◽  
Black Soldier Fly ◽  
Nutrient Contents ◽  
Compound Fertilizer ◽  
Nitrogen Ratio ◽  
Nutrient Analyses

AbstractIn the context of black soldier fly (BSF) rearing, often the residues from production — mainly faeces but also undigested substrate — are addressed as frass in a broader sense. As BSF production is expanding, the valorization of BSF frass as organic fertilizer is gaining importance. However, in contrast to established organic fertilizers, little is known on the properties and variation of this by-product, which is essential for assessing possible application purposes. To elaborate a first overview on this relatively new waste stream, BSF frass analyses from the literature and anonymized frass analyses enquired from BSF producers were compiled. For a possible agricultural use as a fertilizer, their nutrient patterns were assessed. With a balanced nitrogen:phosphorous pentoxide:potassium oxide (N:P2O5:K2O) ratio of 1:0.9:1.1, BSF frass can be characterized as a slightly alkaline (pH 7.5), nutrient-rich compound fertilizer, with the nutrient and especially the micronutrient contents showing high variation. The comparably high carbon-to-nitrogen ratio and low shares of ammonium nitrogen indicate a limited immediate nutrient release and point to possible applications of frass as a long-term fertilizer. The use of frass as an organic fertilizer as one element in a fertilization strategy is promising. By improving nutrient cycling back to the field, BSF frass can represent an important element of sustainable circular agriculture. However, more information on BSF feed and production systems needs to be combined with the nutrient analyses to better understand the variation in frass nutrient contents.

scholarly journals Bokashi, Boiled Manure and Penergetic Applications Increased Agronomic Production Variables and May Enhance Powdery Mildew Severity of Organic Tomato Plants

Horticulturae ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 27
Author(s):  
Fernando Teruhiko Hata ◽  
Mauricio Ursi Ventura ◽  
Gustavo Adolfo de Freitas Fregonezi ◽  
Romário Fortunato de Lima
Keyword(s):  
Powdery Mildew ◽  
High Efficiency ◽  
Production Systems ◽  
Tomato Fruit ◽  
Fruit Size ◽  
Fruit Production ◽  
Organic Fertilizers ◽  
Soluble Solids ◽  
Total Soluble Solids ◽  
Tomato Yield

Research on organic fertilizers are of crucial importance for sustainable production systems with high efficiency of natural resource use. The objective of this study was to evaluate organic sources of fertilization (boiled manure (BM), effective microorganism (EM) Bokashi, and Penergetic) for their effects on agronomic variables (fruit size and yield, total soluble solids) and on foliar powdery mildew severity of tomato (Solanum lycopersicum L.). The crops were grown during two cropping cycles in protected cultivation. The treatments were: Control (water only); 50 g per plant of EM Bokashi compost in two applications; Penergetic at 1.5 g L−1 applied to the substrate before planting or sprayed on the plants 14 days after transplanting; and BM at 2.5%, 5.0%, 7.5%, and 10% concentrations (vol/vol) in water, via fertigation. Fruit production and quality were assessed. The effects of treatments on powdery mildew (Leveillula taurica Lév. G. Arnaud) were analyzed by using a diagrammatic scale. Bokashi, 10% BM, and Penergetic increased fruit production of the first three fruit trusses. Bokashi treatment increased tomato fruit diameter. The effects on fruit length and total soluble solids varied with each crop cycle. Powdery mildew severity increased with 10% BM, compared to the control. Both 10% BM and Penergetic presented similar fruit production to Bokashi and are good candidates as substitutes for Bokashi as organic fertilizers/amendments while maintaining tomato yield.

EFECTO DE DIFERENTES ABONOS ORGÁNICOS EN LA PRODUCCIÓN DE TOMATE (Solanum lycopersicum, L)/ EFFECT OF DIFFERENT ORGANIC FERTILIZERS ON THE PRODUCTION OF TOMATO (Solanum lycopersicum, L)

Biotecnia ◽  
2016 ◽  
Vol 18 (3) ◽  
pp. 33-36
Author(s):  
Ricardo Augusto Luna Murillo ◽  
Juan José Reyes Pérez ◽  
Kleber Augusto Espinosa Cunuhay ◽  
Marcelo Vicente Luna Murillo ◽  
Fiamma Valeria Luna Quintana ◽  
...  
Keyword(s):  
Solanum Lycopersicum ◽  
Production Systems ◽  
Block Design ◽  
Positive Influence ◽  
Organic Production ◽  
Organic Fertilizers ◽  
Control Treatment ◽  
Vegetable Production ◽  
Solanum Lycopersicum L ◽  
Randomized Block Design

Entre los sistemas de producción orgánica bajo condiciones controladas, la producción de hortalizas con aplicación de enmiendas es una práctica que se ha extendido a escala mundial. El objetivo del presente estudio fue evaluar los efectos de los abonos orgánicos sobre algunas variables de producción en plantas de tomate. Las evaluaciones se realizaron a los 65 días después del trasplante, utilizándose abonos orgánicos edáficos y foliares y un tratamiento control. Los tratamientos fueron aplicados una vez sembradas las plantas a los 30 días, siguiendo un diseño experimental de bloques al azar. Sobre la base de los resultados obtenidos se comprobó que a los 65 días después de la siembra, los abonos humus de lombriz más ácido húmico tienen una influencia positiva sobre el número y peso total de frutos; el tratamiento bocaschi más ácido húmico fue superior al diámetro del fruto. ABSTRACTAmong the organic production systems under controlled conditions, vegetable production with application of amendments is a practice that has spread worldwide. The aim of this study was to evaluate the effects of organic fertilizers on some production variables tomato plants. Evaluations were performed at 65 days after transplantation, using different soil and foliar organic fertilizers and a control treatment. The treatments were applied once planted plants at 30 days, following an experimental randomized block design. Based on the results obtained it was found that at 65 days after sowing, the humus fertilizer more acids plus humic have a positive influence on the total number of fruits, and the total weight of fruits, and treatment bocaschi plus humic acid was higher in the diameter of the fruit.

scholarly journals Spatial Variability of Soil Phosphorus Indices under Two Contrasting Grassland Fields in Eastern Canada

Agronomy ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 24
Author(s):  
Jeff D. Nze Memiaghe ◽  
Athyna N. Cambouris ◽  
Noura Ziadi ◽  
Antoine Karam ◽  
Isabelle Perron
Keyword(s):  
Production Systems ◽  
Saturation Index ◽  
Soil Phosphorus ◽  
Sampling Strategy ◽  
Soil Sampling ◽  
Organic Fertilizers ◽  
Eastern Canada ◽  
Soil P ◽  
Permanent Pasture

Phosphorus (P) is an essential nutrient for grassland production systems. However, continuous applications of P fertilizers result in soil P accumulations, increasing the risk of P losses in runoff and erosion. This study aims to investigate the field-scale variability of soil-test P (STP) in two contrasting grassland fields using descriptive statistics and geostatistics for accurate recommendations on soil sampling strategy and sustainable approaches to P management. A young grassland (YG; 2 years) and an old grassland (OG; 10 years under permanent pasture) were classified as humo-ferric podzol and received organic fertilizers. Soil samples were collected in 16-m by 16-m triangular grids at two depths (0–5 and 5–20 cm). They were analyzed for available P and other soil elements extracted using the Mehlich-3 method (M3). The agri-environmental P saturation index (P/Al)M3 was calculated. Phosphorus accumulation was observed in OG (0–5 cm) as a result of long-term manure applications. Repeated applications of organic fertilizers can impact the long-term buildup of soil P, thus decreasing soil P va-riability and spatial dependence in permanent grasslands. A soil sampling strategy focusing on the 0–5 cm layer should be retained in permanent grasslands for sustainable P recommendations in Eastern Canada.

scholarly journals Soil organic carbon, physical fractions of the macro-organic matter, and soil stability relationship in lacustrine soils under banana crop

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0254121
Author(s):  
Tatiana Rondon ◽  
Rosa Mary Hernandez ◽  
Manuel Guzman
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Crop Production ◽  
Production Systems ◽  
Agronomic Traits ◽  
Soil Aggregates ◽  
Sampling Technique ◽  
Organic Fertilizers ◽  
Plant Soil

Banana is a staple food and a major export commodity in the tropics. However, banana production systems are affected by the plant-soil relationships, where properties such as quality and quantity of soil organic matter play an important role in the dynamics of soil physical properties. In order to evaluate the effect of the soil organic carbon (SOC) content and its distribution in the water-stable of soil aggregates (WAS), and the physical fractions of the macro-organic matter, a study was conducted in lacustrine soils under Banana cv. ʻGrand Nainʼ in Venezuela. Soil sampling was carried out in two batches differentiated by their textural class and crop production. A completely randomized design under a directed random sampling technique was carried out. In each condition, 12 composite samples were taken at depths 0–5 and 5–10 cm, respectively. WAS were separated into micro (< 250 μm) and macroaggregates (> 250 μm). Also, physical fractionation by size-density of the macro-organic matter into light (LF), intermediate (IF), and heavy (HF) fraction using a silica gel solution, and SOC, were determined and correlated with banana yield and other agronomic traits. A major proportion of aggregates > 250 μm were found in both conditions and depths. Organic Carbon within soil aggregates ranged between 29.7 and 35.3 g kg-1. The HF was superior to IF and LF; however, its C content was higher in the LF. The results allow inferring that the stability conferred to these soils is primarily associated with the presence of the snail, which shares the same size as the aggregates studied. High yields are associated with high C content in stable aggregates, as well as in the most labile fractions of macro-organic matter. These results highlight the importance of the use of organic fertilizers less recalcitrant as a strategy for sustainable management of banana cultivation.

scholarly journals Comparison of Two Different Management Practices under Organic Farming System

Agronomy ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1466
Author(s):  
Jiří Antošovský ◽  
Martin Prudil ◽  
Milan Gruber ◽  
Pavel Ryant
Keyword(s):  
Winter Wheat ◽  
Organic Farming ◽  
Production System ◽  
Management Practices ◽  
Production Systems ◽  
Foliar Application ◽  
Animal Husbandry ◽  
Farming System ◽  
Organic Fertilizers

Organic farmers usually do not have the opportunity to address the actual symptoms of deficiency through the foliar application of synthetic fertilization, therefore, the main treatment is realized by green manure crop cultivation and application of organic fertilizers. The aim of this long-term experiment was to compare two different production systems with and without livestock in terms of organic farming, and a control variant with no fertilization was also included (treatment 1). The production system without animal husbandry was based on solely the application of renewable external resources (compost or digestate) (treatment 2) and the same fertilization with the addition of auxiliary substances (AS) (treatment 3). The production system with animal husbandry included utilization of fertilizers produced on the farm (fermented urine or manure) using solely farm fertilizers (treatment 4) and in addition with AS (treatment 5). Each treatment had three replications. This work describes the average yields from four experimental years and five experimental localities. Winter wheat, potatoes, winter wheat spelt and legume-cereal mix with corn were used and examined as model crops during the first four years of this long-term research. The highest average yield of winter wheat grain and potato tubers during the first two years of the experiment were obtained after the treatments 2 (7.1 t/ha grain, 33,9 t/ha tubers) and 3 (7.0 t/ha grain, 34,1 t/ha tubers). The several times higher nitrogen content in applied digestate and compost in comparison with fermented urine and manure was probably the reason for such results. On the contrary, the results obtained from the third (spelt) and fourth (LCM and corn) experimental years favored treatment 4 (5,5 t/ha grain, 4,6 cereal unit/ha) and 5 (5,4 t/ha grain, 4,7 cereal unit/ha) from the long-term point of view. After four experimental years, the presented results supported the application of farm fertilizers as a preferable option. The treatments with additional application of AS did not provide a higher yield, therefore, such an application seems unnecessary.

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