scholarly journals Performance, Phyto-nutritional and Bio-active substances of Sweet Pepper (Capsicum annum) in response to Soil Applied Organic and Inorganic Sources of N Fertilizers

2021 ◽  
Vol 15 (1) ◽  
pp. 39-47
Author(s):  
Christopher M. Aboyeji ◽  
Oluwagbenga Dunsin ◽  
Opeyemi A. Ajayi ◽  
Gideon O. Agbaje ◽  
Aruna O. Adekiya ◽  
...  
Keyword(s):  
Crop Production ◽  
Food Additives ◽  
Soil Health ◽  
Sweet Pepper ◽  
Quality Parameters ◽  
N Fertilizer ◽  
Expert Committee ◽  
N Fertilizers ◽  
Randomized Design ◽  
Nutritional Qualities

Background: Soil health is an important factor for producing a higher yield and obtaining good quality products. Nitrogen fertilizer is one of the most important and valuable agricultural inputs for increasing crop production. Objective: Experiments were conducted in 2017 and 2018 in the cropping seasons to determine the performance and nutritional qualities of sweet pepper in response to organic and inorganic sources of N fertilizers. Methods: Ten kilograms (10 kg) capacity black polythene bags were filled with topsoil and were arranged randomly on the field. Treatment combination included: - 0 NPK + 0 PM (T1), 40 NPK + 0 PM (T2), 32 NPK + 8 PM (T3), 24 NPK + 16 PM (T4), 0 NPK + 40 PM (T5), 8 NPK + 32 PM (T6), 16 NPK + 24 PM (T7) and 20 NPK + 20 PM (T8). Experiments were laid out in a completely randomized design and were replicated four times. Vegetative, flowering, and quality parameters were collected and analyzed using the GenStat Discovery, 2014 statistical analysis software. Separation of means was determined by the Duncan Multiple Range Test (DMRT) at a probability level of 5%. Results: Results indicated that high rates of an organic source of N fertilizer produced higher values for vegetative and yield parameters, which was similar to the sole application of inorganic fertilizer. There was no significant effect of the sole application and combined organic and inorganic sources of N fertilizer on heavy metals and nitrates accumulation, but their effects were able to increase the values for nitrites above the recommended limits as suggested by the Joint FAO/WHO Expert Committee on Food Additives. Conclusion: Our results showed that 20 NPK + 20 PM is the best treatment without any health implications in the study area, which also improved the yield and, therefore, can be considered economical.

Pertumbuhan Cladocera jenis Chydoridae pada media kultur yang berbeda

2013 ◽  
Vol 1 (2) ◽  
Author(s):  
Denovis Sambode ◽  
Henneke Pangkey ◽  
Sartje Lantu
Keyword(s):  
Population Growth ◽  
Culture Medium ◽  
Quality Parameters ◽  
Organic Fertilizers ◽  
Cow Dung ◽  
Randomized Design ◽  
Period Data ◽  
Growth Development ◽  
Completely Randomized Design ◽  
Medium Culture

The aim of this study was to find out the effect of different organic fertilizers on the population growth of Chydorus sp. This research was conducted at Laboratorium of Nutrition and Food Technology, Faculty of Fishery and Marine Sciences, Sam Ratulangi University, from December, 2012 to January, 2013. The experiment was run in the Completely Randomized Design with 3 treatments and 3 replication. Chydorus sp. was cultured in 9 glass jars with a volume of 1 L each. Three treatments applied in this research included A: medium culture composed of 500ml of water and 50 grams of soil; B: medium culture composed of 500ml of water, 50 grams of soil and 10g of cow dung; C: medium culture composed of 500ml of water, 50 grams of soil and 10g of horse dung. The density of Cydorus sp. in each media was 10 individuals /500 ml water. Observation on the population growth, development of live preys, and water quality parameters was conducted for 20 days period. Data were statistically analized with Analysis of variance. The results showed the highest density of Chydorus sp. was reached by Chydorus cultured in medium with horse manure (2169 individual/500 ml), followed by medium culture with cow manure (1715 individual/500 ml), and the lowest in medium culture with soil which was 1065,33 individual/500 ml. However, Analysis of variances showed that Chydorus population growth were not significantly affected by different culture medium. Keywords: manure, liquid fertilizer, growth, Chydorus sp.

scholarly journals Effect of Fertilisation on the Quality of Dried Coriander (Coriandrum sativum L.) and Lovage (Levisticum officinale)

Agriculture ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 386
Author(s):  
Natalia Matłok ◽  
Józef Gorzelany ◽  
Adam Figiel ◽  
Maciej Balawejder
Keyword(s):  
Bioactive Compounds ◽  
Crop Production ◽  
Solid Phase ◽  
Quality Parameters ◽  
Raw Material ◽  
Vacuum Microwave ◽  
Dpph Method ◽  
Total Antioxidant ◽  
Total Antioxidant Potential

The study presents the effects of fertilisation on selected quality parameters of the dried material obtained from plants of lovage and coriander. During the crop production process, the plants were treated with two fertilisers containing substances potentially acting as elicitors. The dried material was obtained in course of a drying process carried out in optimum conditions and based on the CD-VMFD method which combines convective pre-drying (CD) at a low temperature (40 °C) with vacuum-microwave finish drying with the use of 240 W microwaves (VMFD). The quality of the dried material was evaluated through measurement of the total contents of polyphenols, total antioxidant potential (ABTS and DPPH method), and the profile of volatile compounds (headspace-solid phase microextractio-HS-SPME) as well as assessment of the colour. It was found that by applying first fertilisation (with organic components) it is possible to significantly increase the contents of both bioactive compounds and volatile substances responsible for the aroma. It was determined that the higher content of bioactive compounds was related to the composition of the first fertiliser, presumably the extract from common nettle. The study showed that the application of the first fertiliser contributed to enhanced quality parameters of the raw material obtained.

scholarly journals Evaluation of Humic Fertilizers Applied at Full and Reduced Nitrogen Rates on Kentucky Bluegrass Quality and Soil Health

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 395
Author(s):  
Alex J. Lindsey ◽  
Adam W. Thoms ◽  
Marshall D. McDaniel ◽  
Nick E. Christians
Keyword(s):  
Microbial Biomass ◽  
Humic Substances ◽  
Management Practices ◽  
Soil Health ◽  
Chemical Properties ◽  
Kentucky Bluegrass ◽  
N Fertilizer ◽  
Turfgrass Quality ◽  
N Rates ◽  
Fertilizer Rates

Soil health and sustainable management practices have garnered much interest within the turfgrass industry. Among the many practices that enhance soil health and sustainability are applying soil additives to enhance soil biological activity and reducing nitrogen (N) inputs—complimentary practices. A two-year study was conducted to investigate if reduced N fertilizer rates applied with humic substances could provide comparable turfgrass quality as full N rates, and whether humic fertilizers would increase biological aspects of soil health (i.e., microbial biomass and activity). Treatments included synthetic fertilizer with black gypsum (SFBG), poly-coated humic-coated urea (PCHCU; two rates), urea + humic dispersing granules (HDG; two rates), urea, stabilized nitrogen, HDG, and a nontreated control. Reduced rates of N with humic substances maintained turfgrass quality and cover, and reduced clipping biomass compared to full N rates. There were no differences in soil physical and chemical properties besides soil sulfur (S) concentration. SFBG resulted in the highest soil S concentration. Fertilizer treatments had minimal effect on microbial biomass and other plant-available nutrients. However, PCHCU (full rate) increased potentially mineralizable carbon (PMC) and N (PMN) by 68% and 59%, respectively, compared to the nontreated control. Meanwhile SFBG and stabilized nitrogen also increased PMC and PMN by 77% and 50%, and 65% and 59%, respectively. Overall, applications of reduced N fertilizer rates with the addition of humic substances could be incorporated into a more sustainable and environmentally friendly turfgrass fertilizer program.

Nitrogen form, time and rate of application, and nitrification inhibitor effects on crop production

2014 ◽  
Vol 94 (2) ◽  
pp. 425-432 ◽  
Author(s):  
R. E. Karamanos ◽  
K. Hanson ◽  
F. C. Stevenson
Keyword(s):  
Crop Production ◽  
Protein Concentration ◽  
Wheat Yield ◽  
Nitrification Inhibitor ◽  
N Fertilizer ◽  
Nitrogen Form ◽  
Anhydrous Ammonia ◽  
N Concentration ◽  
Fertilizer Rates ◽  
Better Than

Karamanos, R., Hanson, K. and Stevenson, F. C. 2014. Nitrogen form, time and rate of application, and nitrification inhibitor effects on crop production. Can. J. Plant Sci. 94: 425–432. Nitrogen management options for anhydrous ammonia (NH3) and urea were compared in a barley–wheat–canola–wheat cropping sequence (2007–2010) at Watrous and Lake Lenore, SK. The treatment design included a factorial arrangement of N fertilizer form (NH3versus urea), nitrification inhibitor application, time of N application (mid-September, mid- to late October, and spring) and four N fertilizer rates (0, 40, 80 and 120 kg ha−1). Anhydrous ammonia applications at 40 kg N ha−1in 2008 (fall) and in 2010 (all times of application) resulted in wheat yield reductions relative to the same applications for urea. For wheat years, yield was reduced for both fall versus spring N fertilizer applications, when no nitrification inhibitor was applied and the inclusion of nitrification inhibitor maintained wheat yield at similar levels across all times of N fertilizer applications, regardless of form. Protein concentration was approximately 2 g kg−1greater with urea compared with NH3at both sites in 2008 and only at Watrous in 2010. Also, early versus late fall N fertilizer applications consistently increased N concentration of grain only for the 40 and/or 80 kg N ha−1rates. Effects of nitrification inhibitor on N concentration were not frequent and appeared to be minimal. Urea had greater agronomic efficiency (AE) than NH3at the lower N fertilizer rates. The nitrification inhibitor had a positive effect on wheat AE only for early fall N fertilizer applications. It can be concluded that for maximum yields NH3or urea will be suitable if applied at rates of 80 kg N ha−1and greater. If N fertilizer is applied at 40 kg N ha−1, especially in fall without inhibitor, urea is better. In terms of protein concentration for wheat, urea seemed to better than NH3and fall was better than spring application.

A rotation design to reduce weed density in organic farming

2010 ◽  
Vol 25 (3) ◽  
pp. 189-195 ◽  
Author(s):  
Randy L. Anderson
Keyword(s):  
Population Dynamics ◽  
Organic Farming ◽  
Weed Management ◽  
Crop Production ◽  
Soil Health ◽  
Population Based ◽  
Weed Population ◽  
Weed Density ◽  
Organic Systems ◽  
Herbicide Use

AbstractWeeds are a major obstacle to successful crop production in organic farming. Producers may be able to reduce inputs for weed management by designing rotations to disrupt population dynamics of weeds. Population-based management in conventional farming has reduced herbicide use by 50% because weed density declines in cropland across time. In this paper, we suggest a 9-year rotation comprised of perennial forages and annual crops that will disrupt weed population growth and reduce weed density in organic systems. Lower weed density will also improve effectiveness of weed control tactics used for an individual crop. The rotation includes 3-year intervals of no-till, which will improve both weed population management and soil health. Even though this rotation has not been field tested, it provides an example of designing rotations to disrupt population dynamics of weeds. Also, producers may gain additional benefits of higher crop yield and increased nitrogen supply with this rotation design.

scholarly journals Laju Pertumbuhan Rumput Laut Gracilaria sp Melalui Budidaya IMTA (Integrated Multi Trophic Aquaculture) di Pantai Geger, Nusa Dua, Kabupaten Badung, Bali

2017 ◽  
Vol 4 (2) ◽  
pp. 191
Author(s):  
Kadek Yudiastuti ◽  
I Gusti Bagus Sila Dharma ◽  
Ni Luh Putu Ria Puspitha
Keyword(s):  
Water Quality ◽  
Design Method ◽  
Salt Water ◽  
Mesh Size ◽  
General Characteristic ◽  
Quality Parameters ◽  
Seaweed Cultivation ◽  
Randomized Design ◽  
Physical And Chemical ◽  
Chemical Water

Gracilaria sp is red alga which belong to class rhodophyceae. It can grow in shallow salt water with a general characteristic is having a cylindrical and branched thallus form. Seaweed cultivation can be performed through IMTA (Integrated Multi Trophic Aquaculture) method. The basic principle of cultivation through the IMTA method is utilizing service of the low thropic level species in marine ecosystems, such as shells and seaweed.  This method is believed to be able to overcome the environmental problems caused by cultivation activities, such as feces and uneaten feed. This research was perfomed 45 days, from February 25 to April 11, 2017. It was held at Geger Beach, Nusa Dua, Badung Regency, Bali, using a complete randomized design method that consist of three treatments and three repetition for each treatment. Treatment control (T1) consisted of 10 bunches of seaweed 100 grams without the abalone, treatement 2 (T2) consisted of 10 bunches of seaweed 100 grams and 20 abalones and treatement 3 (T3) consisted of 10 bunches of seaweed 100 grams and 40 abalones. The result showed that specific growth rate in Gracilaria sp.  was highest in treatment T1, compared to treatment T2 and T3. This was caused by the cage construction of abalone amd the present of small mesh size net to cover the seaweed  planting, which made the growth was not optimal.  However, the use of a nets system in seaweed cultivation could minimize the loss of thallus. It was proved by the survival rate of seaweed in first, second and third, that is averagely high, ranging from 90% to 100%. Physical and chemical water quality parameters are also measured, and It showed that the water quality was suitable for the cultivation of both, seaweed and abalone.

scholarly journals The Affection of Fine Bubbles (FBs) Application on Growth Siamese Catfish (Pangasianodon hypophthalmus) in Aquaponic System

2020 ◽  
pp. 30-36
Author(s):  
Rahmad Afdillah ◽  
Yuli Andriani ◽  
Zahidah Hasan ◽  
. Rosidah ◽  
. Iskandar
Keyword(s):  
Water Quality ◽  
Specific Growth ◽  
Good Condition ◽  
Quality Parameters ◽  
Control Treatment ◽  
Effective Pressure ◽  
Growth And Survival ◽  
Pangasianodon Hypophthalmus ◽  
Randomized Design ◽  
Completely Randomized Design

This research aims was to determine the effective pressure on fine bubbles technology on the growth of Siamese catfish fry in the aquaponic system. This study uses a completely randomized design with four treatments and three replications. Treatment A (Control), Treatment B (FBs at a pressure of 4,5 atm), Treatment C (FBs at a pressure of 5 atm and treatment D (FBs at a pressure of 5,5 atm). The parameters observed were Specific Growth Rate, Survival Rate and water quality (Temperature, pH, DO, Ammonia) Data were analyzed using variance with the F test at a 95% confidence level. The best treatment for catfish growth was treatment D (5,5 atm pressure), which gave the highest SGR value of 7,24% and the highest SR value of 100%. The value of water quality parameters were in good condition for the growth and survival of catfish.

scholarly journals Mulching: A viable option to increase productivity of field and fruit crops

2017 ◽  
Vol 9 (2) ◽  
pp. 974-982
Author(s):  
Jagroop Kaur ◽  
Harsimrat K. Bons
Keyword(s):  
Soil Degradation ◽  
Crop Production ◽  
Cropping Systems ◽  
Biological Activities ◽  
Soil Health ◽  
Underground Water ◽  
Soil Productivity ◽  
Fruit Crops ◽  
Horticultural Crops ◽  
Weed Growth

Mulching plays an important role in production of agricultural and horticultural crops in the current scenario of declining water table, soil degradation and climate change. The main objectives of mulching are to prevent loss of water by evaporation, prevention of soil erosion, weed control, to reduce fertilizer leaching, to promote soil productivity, to enhance yield and quality of field and fruit crops. So, mulching is useful to save our underground water resource, soil and environment for sustainable crop production. In this review paper, the literature clearly shows pronounced effects of mulching on soil health by improving the soil structure, soil fertility, biological activities, avoid soil degradation in addition to moisture conservation, regulating temperature, encouraging change in favourable micro-climate, check weed growth and ultimately increasing the productivity, quality, profitability and sustainability of crops and cropping systems irrespective of the system/situation.

scholarly journals The affection of fine bubbles (FBs) aplication on growth, feed efficiency of striped catfish, Pangasianodon hypophthalmus (Sauvage, 1878) and water quality in aquaponic system

2021 ◽  
Vol 21 (3) ◽  
pp. 277-290
Author(s):  
Yuli Andriani ◽  
Zahidah Zahidah ◽  
Rosidah Rosidah ◽  
Iskandar Iskandar
Keyword(s):  
Water Quality ◽  
Feed Efficiency ◽  
Suitable Condition ◽  
Plant Productivity ◽  
Quality Parameters ◽  
Control Treatment ◽  
Average Weight ◽  
Feed Conversion ◽  
Pangasianodon Hypophthalmus ◽  
Randomized Design

This research aims to determine the effect of fine bubble technology with different pressures on Siamese catfish seed's growth and feed efficiency in an aquaponic system. This research used a completely randomized design with four treatments and three replications. Treatment A (Control), Treatment B (FBs with a pressure of 4.5 atm), Treatment C (FBs with a pressure of 5 atm and treatment D (FBs with a pressure of 5.5 atm). The parameters observed were Specific Growth Rate, Feed Conversion Ratio, water quality (temperature, pH, DO, and ammonia), and plant productivity.  The seeds used were catfish seeds aged 16-36 days, 1-2 inches long, and weighed 0.26-0.29 grams. The container used is a fiber tub of 16 units with a size of 70 cm x 70cm x 70 cm. The feed used is commercial feed PF 1000 content crude protein 35%. The data were analyzed using variance with the F test at the 95% confidence level. The best treatment for catfish growth was treatment D (pressure 5.5 atm), which gave the highest SGR value of 7.24 ± 0.5 and FCR value of 1.19 ± 0.09. The value of water quality parameters is in suitable condition for the growth of catfish seed. The best plant productivity was found in treatment D with an average weight of 60.75 g.

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