scholarly journals Nutritional Characteristics of Biochar from Pineapple Leaf Residue and Sago Waste

2020 ◽  
Vol 28 (S2) ◽  
Author(s):  
Norshidawatie Bohari ◽  
Hasmah Mohidin ◽  
Juferi Idris ◽  
Yoshito Andou ◽  
Sulaiman Man ◽  
...  
Keyword(s):  
Low Temperature ◽  
Agricultural Soils ◽  
Soil Nutrient ◽  
Nutrient Content ◽  
Mineral Contents ◽  
Nutritional Characteristics ◽  
High Nutrient ◽  
Leaf Residue ◽  
Sago Waste

Biochar produced from biomass with high nutrient content is essential for improving the quality of agricultural soils. An abundance of biomass is converted into biochar with high nutrient content, but studies on the conversion of pineapple and sago waste into biochar are still limited. This research aimed to produce biochar from pineapple leaf (PLB), sago bark (SBB), and sago pith (SPB) through the carbonization process with low temperature. The samples were carbonized using a laboratory electric oven at a low temperature of 350°C. The raw biomass and biochar produced were then subjected to elemental analysis and characterization. The mineral contents of carbonized biochar such as K, N, S, Mg, and Ca increased from those of the feedstock concentrations. For PLP, K element increased 24-fold from 2.44 ± 0.73% to 48.32 ± 9.92%, while N element increased from 6.13 ± 2.39% to 8.33 ± 5.34%. However, for both SBB and SPB, N and K nutrients increased by 2-fold. The study reveals that pineapple leaf biochar has the potentials to be used as an alternative soil amendment to elevate soil nutrient and quality.

scholarly journals Growth, Yield, Nutrient Content and Fruit Quality of Carica papaya L. Under Controlled Conditions. II. Boron Effects

1969 ◽  
Vol 66 (2) ◽  
pp. 80-88
Author(s):  
Agripino Pérez ◽  
Norman F. Childers
Keyword(s):  
Nutrient Solution ◽  
Mineral Content ◽  
Carica Papaya ◽  
Growth Yield ◽  
Nutrient Content ◽  
Sand Culture ◽  
Mineral Contents ◽  
Four Levels ◽  
Panel Evaluation

A sand culture greenhouse experiment was conducted with papaya, Carica papaya L., variety Blue Solo, to determine the effects of four levels of Bin the nutrient solution (0.01, 0.05, 0.1 (control), and 1.5 p/m) on growth, fruiting and mineral content. B deficiency and B excess symptoms are described for leaves, petioles, central stems, and fruit. Mineral contents of leaves, petioles, and fruits are presented and discussed. Fruits receiving 0.05 p/m B in the nutrient solution were preferred. The critical level of B appears to be about 20 p/m in the petioles and leaves, whereas excess B occurred at about 70 and 300 p/m, respectively, for petioles and leaves. Quality components of the fruits are based on taste panel evaluation.

scholarly journals Effects of Chlorella sp. Additions on the Changes of Visceral Mass and Proximate Contents of Shellfish

2019 ◽  
Vol 7 (2) ◽  
pp. 79
Author(s):  
Clara Dhisa Sumunaring Ratna ◽  
Trijoko Trijoko
Keyword(s):  
Color Change ◽  
Food Preferences ◽  
Nutrient Content ◽  
Northern Coast ◽  
Visceral Mass ◽  
Color Changes ◽  
Chlorella Sp ◽  
Good Taste ◽  
High Nutrient

Shellfish, called as kerang in Indonesia, contains animal protein that’s popular, making it as and important fisheries and marine commodity. Supported by the good taste and high nutrient content in it. Paphia undulata or Kerang  Batik, Peryglipta reticulata or Kerang Kemiri, Meretrix meretrix or Kerang Tahu, and Codakia tigerina or Kerang Madu, are consumption shells from northern coast of Java. To improve the quality of shellfish, Chlorella added as shellfish food preferences. It supported by the high nutrient content in Chlorella sp. Shellfish kept for 15 days in a basket with a sand substrate and drainage from sea. Therefore, the water quality had been controlled for the changed of salinity and water temperature. Parameters used to see the improvement shellfish quality is the color changes on visceral mass and the changes of proximate content (moisture, protein, fat, carbohydrate and ash). This study proves the color changes on visceral mass and proximate content. The color change occurs on the visceral mass and the gills. The changes of viscerall mass occurs on kerang batik from white greyish to yellow while the more clearly gills occurs on kerang madu and kemiri. Meanwhile, the change of proximate shown by the increasing of protein and moisture on all the spesies while on the otherside the decreasing of carbohydrate and ash, but the increasing of fat only occurs on kerang batik and kerang madu. The higher proximate changes occur on kerang madu, where the ammount of moisture at 71,43 ± 0,03 %, the protein at 16,55 ± 0,02 %, the fat at 1,35 ± 0,04 %, the carbohydrate at 2,9 ± 0,03 %, and the ash at 8,09 ± 0,04 %. The conclusion of this research are kerang madu has the higher positive influences by addition of Chlorella, shown by the increasing of proximate contents and the clearly of gills. Keywords : addision of Chlorella sp., changes of visceral mass, proximate, shellfish

Application of Different Fractions of Anaerobic Digestate Significantly Influences the Carbon Cycle in Grassland Soils

2020 ◽  
Author(s):  
Marta Cattin ◽  
Kirk T. Semple ◽  
Marc Stutter ◽  
Gaetano Romano ◽  
Alfonso Lag-Brotons ◽  
...  
Keyword(s):  
Phospholipid Fatty Acid ◽  
Soil Nutrient ◽  
Nutrient Status ◽  
Nutrient Content ◽  
Microbial Biomass C ◽  
Grassland Soils ◽  
Soil C ◽  
Application Rates ◽  
C Stocks ◽  
High Nutrient

<p>Applying digestate to soil is of growing interest in agriculture. However, the impacts of digestate on soil biogeochemical cycles often remain unclear, especially after solid-liquid separation of whole digestate (WD). We used a 21 d incubation to examine the effects of WD and solid digestate (SD) on CO<sub>2</sub>-C efflux, dissolved organic carbon (DOC), microbial biomass C (C<sub>micro</sub>), phospholipid fatty acid (PLFA) and carbon use efficiency (CUE) within two grassland soils of contrasting nutrient status. Application rates for SD and WD were based on recommended N inputs to grassland soils for these organic materials. Compared to un-amended controls, cumulative CO<sub>2</sub>-C efflux, C<sub>micro</sub> and the fungal:bacterial in soils increased significantly following SD application, regardless of the soil nutrient content (+20% CO<sub>2</sub>-C, +29% C<sub>micro</sub>, +58% fungal:bacteria for high nutrient soil; +563% CO<sub>2</sub>-C, +36% C<sub>micro</sub>, +18% fungal:bacteria for low nutrient soil). In contrast, WD produced a significant effect on CO<sub>2</sub>-C efflux and fungal:bacterial only in the low nutrient soil. Our results also indicated that both digestate fractions and the initial soil nutrient status affected CUE. Applying both SD and WD to a low nutrient soil potential leads to decreases in soil C stocks, whilst the application of SD to a high nutrient soil can potentially enhance soil C stocks. Digestate application must be carefully planned, accounting for both the nature of the digestate and of the soil, in order to avoid adverse impacts on soil C stocks.</p><p> </p>

scholarly journals Design and Build a Soil Nutrient Measurement Tool for Citrus Plants Using NPK Soil Sensors Based on the Internet of Things

2021 ◽  
Vol 1 (2) ◽  
pp. 67-74
Author(s):  
Haristian Pratama ◽  
Amsar Yunan ◽  
Rudi Arif Candra
Keyword(s):  
Plant Growth ◽  
Alluvial Soil ◽  
Soil Nutrient ◽  
Nutrient Content ◽  
Measurement Tool ◽  
Soil Sensors ◽  
Dry Soil ◽  
Citrus Seeds ◽  
The Internet Of Things

A suitable planting medium is a medium of good quality soil that can support plant growth quickly. Fertile soil is the primary need for plants. The quality of the planting medium dramatically affects plant growth. The types of soil needed for plant growth vary, namely sandy soil, red soil, alluvial soil, and humus soil. Using an NPK sensor that functions to detect nutrients in the soil and can work if the tip of the sensor is plugged into the soil they want to detect, the results detected by the sensor will be sent in the form of analog signal data to nodemcu, which will be processed and displayed on the screen. Thingspeak. This tool is controlled by nodemcu with an NPK sensor to detect nutrients in the soil with output to thingspeak. The function of the NPK sensor tool will measure the nutrients in the soil for citrus seedlings, and the results read by the Npk sensor will be sent to the Thingspeak web, making it easier for farmers to seed citrus seeds. The data read by the sensor will be sent to thingspeak, making it easier to monitor nutrients in the soil. From the results of the tests carried out, it is found that the nutrient content in wet soil is higher than in dry soil; from the tests carried out, the NPK sensor accuracy rate is 90%.

scholarly journals Optimalisasi Waktu Pengomposan dan Kualitas Pupuk Kandang dari Kotoran Kambing dan Debu Sabut Kelapa dengan Bioaktivator PROMI dan Orgadec

2017 ◽  
Vol 35 (1) ◽  
pp. 136
Author(s):  
Linda Trivana ◽  
Adhitya Yudha Pradhana
Keyword(s):  
Organic Fertilizer ◽  
Nutrient Content ◽  
Optimal Time ◽  
High Potassium ◽  
Organic C ◽  
High Nutrient ◽  
Coir Dust ◽  
Coconut Coir ◽  
Goat Manure

Animal manures can be used as organic fertilizer because the high nutrient content such as nitrogen (N), phosphorus (P), and potassium (K). The nutrients are needed by plants and soil for fertility. One of the animal manuresthat can be used for organic fertilizer is goat manure. Goat manure is used as organic fertilizer it contains relatively more balanced nutrients than other natural fertilizer. In addition, the goat manure is mixed with the goat urine that alsocontains high nutrients. Coconut coir dust contains high potassium so that the addition of coconut coir dust in organic fertilizer will increase the potassium content (K) in organic fertilizer. The purpose of this research was to find out theinfluence of effective Orgadec and PROMI bioactivators on the optimal time of composting and the quality of the organic fertilizer. The organic fertilizer was analyzed to determine the content of N, P, K, organic-C, C/N ratio, watercontent, and pH. The result of analysis is compared with SNI 19-7030-2004. Organic fertilizer analysis was conducted on day 0, 10, 20, 30, 40, and 50. The result of the organic fertilizer analysis with Orgadec bio-activator more effectiveand faster on the decomposition organic matter in the compost compared PROMI (<20 days). The quality of organic fertilizer with Orgadec bioactivator on day 10 and 20, while organic fertilizer with PROMI on day 20, 30, 40, and 50days was in accordance with the quality stated in SNI 19-7030-2004 (C/N ratio, levels of N, P, K, water, and organic-C).

scholarly journals Random Forest Algorithm for Soil Fertility Prediction and Grading using Machine Learning

2019 ◽  
Vol 9 (1) ◽  
pp. 1301-1304
Keyword(s):  
Machine Learning ◽  
Random Forest ◽  
Soil Nutrient ◽  
Nutrient Content ◽  
High Rate ◽  
Accuracy Score ◽  
Target Variable ◽  
Agriculture Sector ◽  
Yield And Quality

n society the population is increasing at a high rate, people are not aware of the advancement of technologies. Machine learning can be used to increase the crop yield and quality of crops in the agriculture sector. In this project we propose a machine learning based solution for the analysis of the important soil properties and based on that we are dealing with the Grading of the Soil and Prediction of Crops suitable to the land. The various soil nutrient EC (Electrical Conductivity), pH (Power of Hydrogen), OC (Organic Carbon), etc. are the feature variables, whereas the grade of the particular soil based on its nutrient content is the target variable. Dataset is preprocessed and regression algorithm is applied and RMSE (Root Mean Square Error) is calculated for predicting rank of soil and we applied various Classification Algorithm for crop recommendation and found that Random Forest has the highest accuracy score.

scholarly journals Meat Quality of Commercial Chickens Reared in Different Production Systems: Industrial, Range and Organic

2020 ◽  
Vol 20 (1) ◽  
pp. 263-285 ◽  
Author(s):  
Fernando Gálvez ◽  
Rubén Domínguez ◽  
Aristide Maggiolino ◽  
Mirian Pateiro ◽  
Javier Carballo ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Meat Quality ◽  
Production System ◽  
Broiler Chickens ◽  
Production Systems ◽  
Essential Fatty Acids ◽  
Mineral Contents ◽  
Nutritional Characteristics ◽  
Commercial Chickens

AbstractMeat is an important part of the human diet since it provides several nutrients. However, the amount of these nutrients can differ according to several factors. With this in mind, the present research was designed with the main objective of evaluating the effect of production system of broiler chickens (industrial, range and organic) on meat quality. The physicochemical, chemical and nutritional characteristics were determined in breast and drumstick meat. The organic chickens presented the lowest amounts of fat and cholesterol and the highest amounts of protein. The colour was also influenced by the production system, where organic and range chickens had the highest values of redness in both cuts (breast and drumstick). In addition, the content of essential fatty acids (C18:2n-6 and C18:3n-3) and other fatty acids with high biological importance, such as eicosapentanoic acid (EPA; C20:5n-3), docosapentanoic acid (DPA; C22:5n-3) and docosahexanoic acid (DHA; C22:6n-3) were higher in organic samples compared to industrial or range chickens. The amino acids content did not vary with the production system. With regard to mineral contents, organic chickens had the highest values of iron in drumstick and significantly lower values of magnesium in both cuts than industrial chickens. On the whole, the meat of the organic chickens showed better nutritional characteristics than those produced in range or industrial conditions.

scholarly journals QUALITY AND SAFETY OF FRESH FRUITS

2019 ◽  
pp. 36-41
Author(s):  
E. A. Cherniazova ◽  
A. A. Efremova ◽  
N. I. Naumova
Keyword(s):  
Customer Service ◽  
Nutritional Value ◽  
Nutrient Content ◽  
Retail Trade ◽  
Quality And Safety ◽  
Lead And Cadmium ◽  
High Nutrient ◽  
Bright Color ◽  
High Concentrations

Plum fruits have harmonious taste qualities and valuable biochemical composition. Plum is characterized by a low content of vitamin C, but in combination with high concentrations of phenolic compounds, is of great value as a source of antioxidants. The problem of improving the quality and ensuring the safety of food products is not only relevant, but is also one of the most important economic problems at the present stage. The aim of the research was to study the quality and safety of fresh plums sold in retail trade. It has been established that in the stores of the retail trade network «Dixi» (Chelyabinsk city) fresh plums are being realized, not only satisfying the requirements of the quality of the current regulatory documents, but also products belonging to a category such as «waste». Excellent organoleptic indicators (attractive appearance, bright color scale) of the studied products were not always consistent with high nutritional value. Thus, benign fractions of the Hungarian and Renclaw plums had the most acceptable taste characteristics and high nutrient content, but due to the content of rotten fruits in the overall product sample, they should not be in free implementation. The highest commodity grade of plum mirabel established during the quality assessment did not guarantee its high nutritional value. The content in the Renclod plums and the mirabel of toxic elements (lead and cadmium) was significantly lower than the level found in the fruits of Chinese plum and Hungarian. The need for additional pre-sales preparation and sorting of the fruits of the Hungarian and Rencloid plums is identified, which will allow to increase not only the quality and safety of products, the culture of customer service, but also to extend the shelf life of commodity lots of fresh plums in general.

Food procurement in English-language Canadian public schools: Opportunities and challenges

2019 ◽  
Vol 6 (1) ◽  
pp. 75-99
Author(s):  
Shawna Holmes
Keyword(s):  
Public Schools ◽  
Food Environment ◽  
Nutritional Quality ◽  
English Language ◽  
Nutrient Content ◽  
Food Environments ◽  
School Food ◽  
Provincial Level ◽  
School Food Environment

This paper examines the changes to procurement for school food environments in Canada as a response to changes to nutrition regulations at the provincial level. Interviews with those working in school food environments across Canada revealed how changes to the nutrition requirements of foods and beverages sold in schools presented opportunities to not only improve the nutrient content of the items made available in school food environments, but also to include local producers and/or school gardens in procuring for the school food environment. At the same time, some schools struggle to procure nutritionally compliant foods due to increased costs associated with transporting produce to rural, remote, or northern communities as well as logistic difficulties like spoilage. Although the nutrition regulations have facilitated improvements to food environments in some schools, others require more support to improve the overall nutritional quality of the foods and beverages available to students at school.

Estimation of the productivity and nutritionality of forage mass of new varieties of Medicago lupulina

2020 ◽  
Author(s):  
A.V. Vorsheva ◽  
◽  
G.V. Stepanova
Keyword(s):  
Vitamin D ◽  
Ascorbic Acid ◽  
Aerial Part ◽  
Nutrient Content ◽  
Calcium Salts ◽  
Green Mass ◽  
Medicago Lupulina ◽  
High Nutrient ◽  
New Varieties

Medicago has a high nutrient content, and the aerial part of Medicago lupulina contains saponins, tannins, estrogenic substances and calcium salts. The leaves of this plant contain carotene, vitamin D and ascorbic acid. Medicago lupulina can develop a significant green mass, has low pubescence, thin stems and provides a delicate forage. The article presents the results of assessing the productivity and feeding qualities of new varieties ofMedicago lupulina

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