Iron and Potassium Fertilization Improve Rocket Growth without Affecting Tilapia Growth and Histomorphology Characteristics in Aquaponics

Aquaponics provides an alternative opportunity for the combined production of fish and plants. Most of the essential nutrients required for optimal plant growth can be supplied from the fish feed, except for K and Fe. These nutrients are usually inadequate in fish feed. In this study, red tilapia and rocket plants were co-cultivated in an aquaponics system along with the extra addition of K and Fe. Fish growth, morpho-anatomical characteristics, and K and Fe loading on fish gills were studied. Plant growth parameters were also determined. The addition of Fe and K slightly improved the produced fresh biomass of rocket per unit area and had no impact on tilapia growth and survival. No severe histological alterations in fish gills, liver, and midgut were detected. EDX analysis showed that the addition of K led to the enrichment of this specific ion in fish gills, but no effects of this accumulation were found on other aspects of fish growth and survival.

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Utilization of herbal supplements on feed on growth and survival rate of catfish (Clarias sp.)

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/883/1/012076 ◽

2021 ◽

Vol 883 (1) ◽

pp. 012076

Author(s):

S N Pratama ◽

R C Mukti

Keyword(s):

Survival Rate ◽

Feed Efficiency ◽

Fish Growth ◽

Good Effect ◽

Fish Feed ◽

Herbal Supplements ◽

Absolute Weight ◽

Growth And Survival ◽

Absolute Growth ◽

Absolute Length

Abstract The feed is one of the most important factors in the growth and survival of fish. One of the efforts made to increase the growth and survival of fish is the provision of herbal supplements in fish feed. The research aim is to provide information about the utilization of herbal supplements on the growth and survival of catfish (Clarias sp). This research has been carried out from July to August 2020 at Bandar Agung Lahat Village, South Sumatera. Catfish rearing containers use two waring units placed in concrete ponds with two treatment that P0: control (without herbal supplements) and P1: utilization of herbal supplements and. The data taken includes absolute growth and absolute length, survival, feed efficiency, and water quality. The utilization of herbal supplements has a good effect on fish growth, feed efficiency, and survival rate. Maintenance of P0 (control) resulted in an absolute weight of 9.79 grams, an absolute length of 6.3 cm, the survival of 85.15%, feed efficiency of 107.89% while maintenance of P1 with the utilization of herbal supplements resulted in an absolute weight of 14.17 grams, an absolute length 7.8 cm, survival 98.57%, feed efficiency 161.170%.

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Growth and health status of Pangasionodon hypophthalmus reared under manipulated photoperiod conditions

F1000Research ◽

10.12688/f1000research.28259.2 ◽

2021 ◽

Vol 10 ◽

pp. 154

Author(s):

Windarti Windarti ◽

Bintal Amin ◽

Asmika H. Simarmata

Keyword(s):

Health Status ◽

Blood Cell ◽

Fish Growth ◽

Tissue Structure ◽

Fish Feed ◽

Tissue Samples ◽

Commercial Fish ◽

Growth And Survival ◽

Wbc Count ◽

Fish Tank

Background: In general, the length of photoperiod affects the physiology of Pangasionodon hypophthalmus. This study aimed to understand the growth and health status of this fish reared under manipulated photoperiods. Methods: The study was conducted between June to August 2020[A1] . Three treatments were applied: control (natural photoperiod); 18 hours of darkness (18D6L; tanks were placed under a dark tarp tent for 18 hours); and 24 hours of darkness (24D0L; tanks were placed under a dark tarp tent continuously). Three replications were performed per treatment. At baseline, fish were approx. 7.5 cm [A2] total length (TL) and 4 g body weight (BW), and were reared in circular plastic tanks (100 L; 30 fish/tank) with aerators and filters, and fed with commercial fish feed pellet (2 times/day to satiation). Fish growth and survival were studied once/week, and blood and tissue samples were taken at the end of the experiment (8 th week). Tissue was formalin fixed and HE stained. Results: The survival of fish in all treatment was 100%. The fish reared in 24D0L and 18D6L grew better than control, achieving mean TL of 23 cm and BW of 98 g (control = 19 cm TL and 72 g BW). There was no difference in hematology condition or tissue structure between the three groups. Tissue structure of gill, kidney and liver were normal, but light abnormality due to parasites was present in the gill of fish reared in 24D0L. Blood samples for all three groups showed mean red blood cell count of 1,800,000 cells/ml and white blood cell (WBC) count of 55,200 cells/ml. WBC consisted of lymphocyte 65%, monocyte 24%, thrombocyte 6%, neutrophil 3%, eosinophil 1% and basophile 1%. Conclusion: Data obtained indicate that a short photoperiod improves the growth of P. hypophthalmus fish and does not negatively affects their health.

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PENGARUH PAKAN MENGANDUNG BAKASANG DALAM MENINGKATKAN PERTUMBUHAN DAN KELANGSUNGAN HIDUP IKAN BAWAL (Colossoma macropomum)

Jurnal Ilmiah Tindalung ◽

10.54484/jit.v6i1.384 ◽

2020 ◽

Vol 6 (1) ◽

pp. 21-24

Author(s):

Usy Nora Manurung ◽

Edwin Oscar Langi

Keyword(s):

Fish Growth ◽

Fish Feed ◽

Dependent Manner ◽

Growth And Survival ◽

Potential Source ◽

Test Fish ◽

Net Cage ◽

Dose Dependent ◽

Determine Effect ◽

Different Doses

Bakasang, produk fermentasi dari jeroan ikan, mengandung Bakteri Asam Laktat (BAL) yang beberapa diantaranya tergolong bakteri probiotik yang dapat meningkatkan pertumbuhan ikan. Penelitian ini bertujuan untuk mengkaji pengaruh pakan mengandung bakasang (PMB) terhadap pertumbuhan dan kelangsungan hidup ikan bawal (Colosoma macropomum) dan menentukan dosis paling efektif dari bakasang terhadap pertumbuhan dan kelangsungan hidup ikan bawal. Sebanyak 120 ekor ikan yang ditempatkan dalam 12 hapa dengan kepadatan 10 ekor ikan/hapa. Setelah proses aklimatisasi, ikan uji diberi PMB dengan empat dosis berbeda (A=0 ml/kg pakan, B= 50 ml/kg pakan, C=75 ml/kg pakan dan D=100 ml/kg pakan) dengan tiga ulangan pada masing-masing perlakuan, pada dosis 5%/bb/hari, diberikan dua kali sehari selama 14 hari. Hasil penelitian menunjukan bahwa pengaruh pemberian pakan meningkat bertambahnya konsentrasi dengan pertumbuhan terbaik teramati pada dosis 100 ml/kg pakan dengan bertumbuhan sebesar 8.7 gram. Hasil ini memperlihatkan bahwa bakasang merupakan sumber potential probiotik yang dapat meningkatkan pertumbuhan ikan bawal meskipun pengujian dengan periode pemeliharaan lebih lama perlu dilakukan untuk melihat pengaruh optimum dari PMB terhadap pertumbuhan dan kelangsungan hidup. Bakasang, a fermentation product made from fish’s viscera, contains Lactic Acid Bacteria (LAB), some of which are probiotic bacteria that can increase fish growth. This study aimed to determine effect of fish feed containing bakasang (FCB) and the effective dose of bakasang on the growth of pomfret (Colosoma macropomum). 120 fish were placed in small net cage (1x1x1) m3. Following acclimatization process, the test fish were fed with four different doses of FCB (A = 0 ml/kg of feed, B = 50 ml/kg of feed, C = 75 ml/kg of feed and D = 100 ml/kg of feed) at a dose of 5% /w/day twice a day in triplicate for 14 days. The results showed that the effect of FCB on the pamfret fish growth increased in a dose dependent manner with best growth observed at a dose of 100 ml/kg of feed with growth of 8.7 gram, suggesting bakasang as potential source of probiotic that can increase the growth of pamfret fish although further study covering longer period time is required to measure the optimum potential of FCB on pamfret fish growth and survival rate.

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GENOTIPSKI ODGOVOR NS HIBRIDA KUKURUZA NA POVEĆANU GUSTINU USEVA

Zbornik radova ◽

10.46793/sbt26.011dj ◽

2021 ◽

Author(s):

Ivica Djalovic ◽

◽

Vuk Radojevic ◽

Vojislav Mihailovic ◽

Sanja Vasiljevic ◽

...

Keyword(s):

Population Density ◽

Plant Growth ◽

Grain Yield ◽

Plant Density ◽

Unit Area ◽

Growth Parameters ◽

Higher Plant ◽

Maize Hybrids ◽

Plant Densities ◽

Use Efficiency

Maize density is an important factor in cultivation which has significant effect on growth parameters. Newer hybrids have greater grain yield at higher plant densities than older hybrids. Differences in grain yield between older and newer maize hybrids were shown to be a function of plant population density. Optimum plant density for maximum grain yield per unit area may differ from hybrid to hybrid on account of significant interactions between hybrids and densities. Modern hybrids have shown tendencies to withstand higher levels of stress (i.e.- low N, high plant densities), which allow them to better sustain suitable photosynthetic rates, appropriate assimilate supplies, and maintain plant growth rates attributable to enhanced mineral nutrition and water use efficiency.

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Impact of stocking density on growth and production performance of Vietnamese koi (Anabas testudineus) in semi-intensive culture system at Muktaghasa region of Mymensingh district

Research in Agriculture Livestock and Fisheries ◽

10.3329/ralf.v2i2.25019 ◽

2015 ◽

Vol 2 (2) ◽

pp. 335-341

Author(s):

Gias Uddin Ahmed ◽

Md Mamunur Rahman ◽

Mohammad Nurul Alam ◽

Md Badrul Alam ◽

Baadruzzoha Sarker

Keyword(s):

Growth Parameters ◽

Market Price ◽

Stocking Density ◽

Fish Growth ◽

Production Performance ◽

Cost Ratio ◽

Fish Feed ◽

Total Production ◽

Anabas Testudineus ◽

Short Period

Stocking density is considered one of the important factors affecting fish growth. The study was aimed to compare the growth parameters of Vietnamese Koi (Anabas testudineus ) at various stocking densities. The experiment was carried out during the period from 01 September to 30 November 2014. Three stocking densities were used as 150, 250 and 350 fries/dec and designated as treatment T1, T2 and T3 respectively each having two replicates. The average size of each pond was 33 decimal with an average depth of 5 feet. Quality fish feed was used three times daily throughout the culture period. From this experiment, it was found that the highest net profit was BDT 32,690 in T1 followed by BDT 36,104 in T2 and BDT 38,450 in T3. That time the market price was BDT 130/kg fish. Culture of Vietnamese koi at stocking density (150 fish/dec) showed higher benefit in short period of time. The benefit cost ratio was 1.7, 1.63 and 1.56 in T1, T2 and T3, respectively. From the present experiment, it was found that the total production was increased with the increase of stocking density. But the individual fish growth rate was decreased with the increase of stocking density.Res. Agric., Livest. Fish.2(2): 335-341, August 2015

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Growth and health status of Pangasionodon hypophthalmus reared under manipulated photoperiod conditions

F1000Research ◽

10.12688/f1000research.28259.1 ◽

2021 ◽

Vol 10 ◽

pp. 154

Author(s):

Windarti Windarti ◽

Bintal Amin ◽

Asmika H. Simarmata

Keyword(s):

Health Status ◽

Blood Cell ◽

Fish Growth ◽

Tissue Structure ◽

Fish Feed ◽

Tissue Samples ◽

Commercial Fish ◽

Growth And Survival ◽

Wbc Count ◽

Fish Tank

Background: In general, the length of photoperiod affects the physiology of Pangasionodon hypophthalmus. This study aimed to understand the growth and health status of this fish reared under manipulated photoperiods. Methods: The study was conducted between May and August 2020. Three treatments were applied: control (natural photoperiod); 18 hours of darkness (18D6L; tanks were placed under a dark tarp tent for 18 hours); and 24 hours of darkness (24D0L; tanks were placed under a dark tarp tent continuously). Three replications were performed per treatment. At baseline, fish were approx. 3 inch total length (TL) and 4 g body weight (BW), and were reared in circular plastic tanks (100 L; 30 fish/tank) with aerators and filters, and fed with commercial fish feed pellet (2 times/day to satiation). Fish growth and survival were studied once/week, and blood and tissue samples were taken at the end of the experiment (8th week). Tissue was formalin fixed and HE stained. Results: The survival of fish in all treatment was 100%. The fish reared in 24D0L and 18D6L grew better than control, achieving a mean TL of 23 cm and BW of 98 g (control = 19 cm TL and 72 g BW). There was no difference in hematology condition or tissue structure between the three groups. Tissue structure of gill, kidney and liver were normal, but light abnormality due to parasites was present in the gill of fish reared in 24D0L. Blood samples for all three groups showed mean red blood cell count of 1,800,000 cells/ml and white blood cell (WBC) count of 55,200 cells/ml. WBC consisted of lymphocyte 65%, monocyte 24%, thrombocyte 6%, neutrophil 3%, eosinophil 1% and basophile 1%. Conclusion: Data obtained indicate that a short photoperiod improves the growth of P. hypophthalmus fish and does not negatively affects their health.

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Chitosan suppresses the expression level of WRKY17 on red chili (Capsicum annuum) plant under drought stress

Indonesian Journal of Biotechnology ◽

10.22146/ijbiotech.55016 ◽

2020 ◽

Vol 25 (1) ◽

pp. 52

Author(s):

Muhammad Abdul Aziz ◽

Rizkita Rachmi Esyanti ◽

Karlia Meitha ◽

Fenny Martha Dwivany ◽

Hany Husnul Chotimah

Keyword(s):

Drought Stress ◽

Plant Growth ◽

Growth Parameters ◽

Global Market ◽

Chili Pepper ◽

Expression Level ◽

Drought Treatment ◽

Promising Alternative ◽

Growth And Survival ◽

Generative Phase

Chili pepper plays a significant role in the global market. However, the production is often impeded by drought stress involving WRKY genes as the defense regulator. Chitosan is considered as a promising alternative fertilizer and defense elicitor. Hence, this study aimed to determine the role of chitosan in improving plant growth and survival of red chili pepper against drought stress. At the onset of the generative phase, chili plants were subjected to 1 mg mL‐1 chitosan, 50 percent drought, or chitosan‐drought treatment. Observations were made on several growth parameters, opened stomata, and WRKY gene expression. The results showed that chitosan‐drought treatment decreased plant growth and yielded significantly. The percentage of opened stomata was recorded at 0.56‐fold lower than control. It was followed by the decrease of the relative expression of WRKY17 and WRKY53 genes up to 0.56 and 0.72‐fold lower than control, respectively. Therefore, we suggested that the double treatment of chitosan‐drought might decrease plant growth performance but increase the defense system by suppressing the expression level of the WRKY17 gene. Interestingly, the drought treatment significantly increased WRKY17 expression level up to 7‐fold higher than control. Hence, it was suggested that WRKY17 has a specific role in response to drought stress.

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Effect of rhizobacteria strains on the induction of resistance in barley genotypes against Cochliobolus sativus

Hellenic Plant Protection Journal ◽

10.2478/hppj-2020-0009 ◽

2020 ◽

Vol 13 (2) ◽

pp. 83-92 ◽

Cited By ~ 1

Author(s):

A. Adam

Keyword(s):

Plant Growth ◽

Pseudomonas Putida ◽

Growth Parameters ◽

Disease Incidence ◽

Dry Weight ◽

Cochliobolus Sativus ◽

Resistance Level ◽

Wet Weight ◽

Number Of Leaves ◽

Barley Genotypes

SummaryEnhancement of the resistance level in plants by rhizobacteria has been proven in several pathosystems. This study investigated the ability of four rhizobacteria strains (Pseudomonas putida BTP1 and Bacillus subtilis Bs2500, Bs2504 and Bs2508) to promote the growth in three barley genotypes and protect them against Cochliobolus sativus. Our results demonstrated that all tested rhizobacteria strains had a protective effect on barley genotypes Arabi Abiad, Banteng and WI2291. However, P. putida BTP1 and B. subtilis Bs2508 strains were the most effective as they reduced disease incidence by 53 and 38% (mean effect), respectively. On the other hand, there were significant differences among the rhizobacteria-treated genotypes on plant growth parameters, such as wet weight, dry weight, plant height and number of leaves. Pseudomonas putida BTP1 strain was the most effective as it significantly increased plant growth by 15-32%. In addition, the susceptible genotypes Arabi Abiad and WI2291 were the most responsive to rhizobacteria. This means that these genotypes have a high potential for increase of their resistance against the pathogen and enhancement of plant growth after the application of rhizobacteria. Consequently, barley seed treatment with the tested rhizobacteria could be considered as an effective biocontrol method against C. sativus.

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Agro-Nanotechnology as an Emerging Field: A Novel Sustainable Approach for Improving Plant Growth by Reducing Biotic Stress

Applied Sciences ◽

10.3390/app11052282 ◽

2021 ◽

Vol 11 (5) ◽

pp. 2282

Author(s):

Masudulla Khan ◽

Azhar U. Khan ◽

Mohd Abul Hasan ◽

Krishna Kumar Yadav ◽

Marina M. C. Pinto ◽

...

Keyword(s):

Plant Growth ◽

Crop Yield ◽

Biotic Stress ◽

Crop Production ◽

Plant Disease ◽

Yield Loss ◽

Growth Parameters ◽

Plant Diseases ◽

High Yield ◽

Plant Disease Management

In the present era, the global need for food is increasing rapidly; nanomaterials are a useful tool for improving crop production and yield. The application of nanomaterials can improve plant growth parameters. Biotic stress is induced by many microbes in crops and causes disease and high yield loss. Every year, approximately 20–40% of crop yield is lost due to plant diseases caused by various pests and pathogens. Current plant disease or biotic stress management mainly relies on toxic fungicides and pesticides that are potentially harmful to the environment. Nanotechnology emerged as an alternative for the sustainable and eco-friendly management of biotic stress induced by pests and pathogens on crops. In this review article, we assess the role and impact of different nanoparticles in plant disease management, and this review explores the direction in which nanoparticles can be utilized for improving plant growth and crop yield.

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The impact of multifactorial stress combination on plant growth and survival

New Phytologist ◽

10.1111/nph.17232 ◽

2021 ◽

Author(s):

Sara I. Zandalinas ◽

Soham Sengupta ◽

Felix B. Fritschi ◽

Rajeev K. Azad ◽

Rachel Nechushtai ◽

...

Keyword(s):

Plant Growth ◽

Growth And Survival ◽

The Impact

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