scholarly journals EFFECT OF CHLORELLA AS A BIOFERTILIZER ON GERMINATION OF WHEAT AND BARLEY GRAINS

2017 ◽  
pp. 26-31 ◽  
Author(s):  
Odgerel B ◽  
Tserendulam D
Keyword(s):  
Crop Production ◽  
Culture Medium ◽  
Potential Role ◽  
Growth Parameters ◽  
Chlorella Sp ◽  
Seed Growth ◽  
Algal Suspension ◽  
Inorganic Chemical ◽  
Barley Grains ◽  
Wheat Seeds

Most of the agriculture sectors have been dependent heavily on inorganic chemical-based fertilizers, which are harmful for both human health and environment. The utilization of beneficial microbes as a biofertilizer has become major concern in industrial agriculture for their potential role in food safety and sustainable crop production. In this study, we examined the effect of Chlorella on germination of barley and wheat grains. Seeds were germinated in culture medium containing microalga (Chlorella sp. 56) and grown for 3, 6, 9 and 12 days in order to study its effect on growth parameters. In conclusion, Chlorella suspension increased the seed growth compared to those of control (sterilized culture medium) of seed germination. The best treatments were 0.06 g/L and 0.23 g/L of algal suspension for the root and shoot lengths of barley and wheat seeds, respectively.

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

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.

scholarly journals Feed Composition Differences Resulting from Organic and Conventional Farming Practices Affect Physiological Parameters in Wistar Rats—Results from a Factorial, Two-Generation Dietary Intervention Trial

Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 377
Author(s):  
Marcin Barański ◽  
Dominika Średnicka-Tober ◽  
Leonidas Rempelos ◽  
Gultakin Hasanaliyeva ◽  
Joanna Gromadzka-Ostrowska ◽  
...  
Keyword(s):  
Crop Production ◽  
Wistar Rats ◽  
Dietary Intervention ◽  
Growth Parameters ◽  
Crop Protection ◽  
The Body ◽  
Interactive Effects ◽  
Supporting Evidence ◽  
Feed Composition ◽  
Npk Fertilizer

Recent human cohort studies reported positive associations between organic food consumption and a lower incidence of obesity, cancer, and several other diseases. However, there are very few animal and human dietary intervention studies that provide supporting evidence or a mechanistic understanding of these associations. Here we report results from a two-generation, dietary intervention study with male Wistar rats to identify the effects of feeds made from organic and conventional crops on growth, hormonal, and immune system parameters that are known to affect the risk of a number of chronic, non-communicable diseases in animals and humans. A 2 × 2 factorial design was used to separate the effects of contrasting crop protection methods (use or non-use of synthetic chemical pesticides) and fertilizers (mineral nitrogen, phosphorus and potassium (NPK) fertilizers vs. manure use) applied in conventional and organic crop production. Conventional, pesticide-based crop protection resulted in significantly lower fiber, polyphenol, flavonoid, and lutein, but higher lipid, aldicarb, and diquat concentrations in animal feeds. Conventional, mineral NPK-based fertilization resulted in significantly lower polyphenol, but higher cadmium and protein concentrations in feeds. Feed composition differences resulting from the use of pesticides and/or mineral NPK-fertilizer had a significant effect on feed intake, weight gain, plasma hormone, and immunoglobulin concentrations, and lymphocyte proliferation in both generations of rats and in the second generation also on the body weight at weaning. Results suggest that relatively small changes in dietary intakes of (a) protein, lipids, and fiber, (b) toxic and/or endocrine-disrupting pesticides and metals, and (c) polyphenols and other antioxidants (resulting from pesticide and/or mineral NPK-fertilizer use) had complex and often interactive effects on endocrine, immune systems and growth parameters in rats. However, the physiological responses to contrasting feed composition/intake profiles differed substantially between the first and second generations of rats. This may indicate epigenetic programming and/or the generation of “adaptive” phenotypes and should be investigated further.

scholarly journals Side effects of triazoles on treated crops

2021 ◽  
Author(s):  
Michal Jakl ◽  
Sanja Ćavar Zeljković ◽  
Ishak Kovač ◽  
Kateřina Bělonožníková ◽  
Jana Jaklová Dytrtová
Keyword(s):  
Oxidative Stress ◽  
Side Effects ◽  
Fungal Pathogens ◽  
Crop Production ◽  
Growth Parameters ◽  
Target Species ◽  
Fruit Peel ◽  
Biochemical Processes ◽  
Basic Plant ◽  
Cherry Tomatoes

Triazolic fungicides are widely applied in crop production to protect plants against fungal pathogens. However, they may influence the biochemical processes in plants and other non-target species. This paper is aimed at the effect of triazoles (namely tebuconazole, cyproconazole, and penconazole) single/mixed applications on the phenolics production in tomato (Solanum lycopersicum L.) fruit peel, amount of chlorophyll a and b in tomato leaves as well as on basic plant growth parameters. For this purpose, cherry tomatoes were planted in the pot experiment and foliarly-treated weekly, with the same total triazoles dose of 3.52 μmol per plant (in mixtures of 1.71 or 1.17 μmol of each in two or three components, respectively). The treatments increased the weight of fruits in the 1 harvest about 43%, however, this effect was not observed in the next harvest. Increased oxidative stress in the triazoles presence was observed, based on the elevated production of antioxidant phenolics in the 1 harvest. Most alarming is the decrease of the weight of thin stems and foliage and the concentration of chlorophyll a (b) in leaves in all triazoles-treated variants. The non-target impacts on plant biochemical processes (related to the phenolics or chlorophylls production and functionality) were confirmed.

A Comparison of Various Growth Parameters of Cell Suspension Cultures to Determine Phytotoxicity of Xenobiotics

Weed Science ◽  
1984 ◽  
Vol 32 (2) ◽  
pp. 235-242 ◽  
Author(s):  
David G. Davis ◽  
Rosa L. Stolzenberg ◽  
Joan A. Dusky
Keyword(s):  
Ethylene Oxide ◽  
Cell Suspension ◽  
Culture Medium ◽  
Growth Parameters ◽  
Cell Suspension Cultures ◽  
Dry Weight ◽  
Suspension Cultures ◽  
Weight Changes ◽  
Advantages And Disadvantages ◽  
Cell Volumes

An assessment was made of various parameters to measure growth of soybean [Glycine max (L.) Merr. ‘Wilkin’] and einkorn (Triticum monococcum L.) cell suspension cultures to establish convenient methods of screening the effects of chemicals. Methods assessed were settled cell volumes, packed cell volumes, absorbance at 525 nm of sonicated aliquots, dry weights (of aliquots or entire flask contents), and electrical conductivity and pH of the culture medium. Settled cell volumes, conductivity, and dry-weight changes were the most useful of the methods tested for determining the phytotoxicity of a nonionic linear alcohol ethylene oxide detergent (an adduct of 1-dodecanol containing eight ethylene oxide units) and the methyl ester of diclofop {2-[4-(2,4-dichlorophenoxy)phenoxy] propanoic acid}. Because 3 to 4 weeks were required to assess whether the cultures could grow out of the initial inhibition by the detergent or herbicide, none of the methods was rapid. Advantages and disadvantages of the various methods and their relative values for screening compounds are described.

scholarly journals Evapotranspiration, crop coefficient and water use efficiency of coriander grown in tropical environment

2018 ◽  
Vol 36 (4) ◽  
pp. 446-452 ◽  
Author(s):  
Vicente de PR da Silva ◽  
Inajá Francisco de Sousa ◽  
Alexandra L Tavares ◽  
Thieres George F da Silva ◽  
Bernardo B da Silva ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Crop Production ◽  
Field Experiments ◽  
Growth Parameters ◽  
Crop Coefficient ◽  
Growing Season ◽  
Tropical Environment ◽  
Mean Values ◽  
Use Efficiency

ABSTRACT The water scarcity is expected to intensify in the future and irrigation becomes an essential component of crop production, especially in arid and semiarid regions, where the available water resources are limited. Four field experiments were carried out at tropical environment in Brazil in 2013 and 2014, in order to evaluate the effect of planting date on crop evapotranspiration (ETc), crop coefficient (Kc), growth parameters and water use efficiency (WUE) of coriander (Coriandrum sativum) plants. The planting dates occurred during winter, spring, summer and autumn growing seasons. ETc was obtained through the soil water balance method and the reference evapotranspiration (ETo) through the Penman-Monteith method, using data collected from an automatic weather station located close to the experimental area. The results of the research showed that the mean values of coriander ETc and Kc were 139.8 mm and 0.87, respectively. Coriander water demand is higher in the summer growing season and lower in the winter; however, its yield is higher in the autumn and lower in the winter. Coriander has higher yield and development of its growth variables in the autumn growing season. The results also indicated that the interannual climate variations had significant effects on most growth variables, as yield, ETc and Kc of coriander grown in tropical environment.

scholarly journals Efficiency of Blotter test and agar culture medium to detect Fusarium graminearum and Pyricularia grisea in wheat seeds

2017 ◽  
Vol 39 (3) ◽  
pp. 297-302
Author(s):  
Meyriele Pires de Camargo ◽  
Maria Heloisa Duarte de Moraes ◽  
José Otávio Machado Menten
Keyword(s):  
Fusarium Graminearum ◽  
Culture Medium ◽  
Potato Dextrose Agar ◽  
Pyricularia Grisea ◽  
Agar Culture ◽  
Hypochlorite Solution ◽  
Three Samples ◽  
Seed Health ◽  
Incubation Temperatures ◽  
Wheat Seeds

Abstract: Seeds can be considered one of the most efficient forms to disseminate pathogens. Therefore, the use of healthy seeds is extremely important to establish a crop, and seed health testing must be performed to determine the seed sanitary quality. This study aimed to compare the efficiency of seed health testing to detect Pyricularia grisea and Fusarium graminearum in three samples of wheat seeds. Methods evaluated were Blotter test with freezing (BTF) and potato-dextrose-agar culture medium (PDA). The incubation temperatures were 20 ºC and 25 ºC. From each sample, a subsample was submitted to seed asepsis using hypochlorite solution (1%) and another analyzed without seed asepsis. The temperatures evaluated did not influence the detection of the pathogens. P. grisea incidence ranged from 4.5 to 17% with BTF without seed asepsis. The BTF with seed asepsis and PDA (with and without seed asepsis) presented pathogen incidence no higher than 1.5%. Moreover, results suggested that most part of P. grisea inoculum was presented externally on seed tissues. PDA medium was more efficient to detect F. graminearum, independently of seed asepsis. By this method, pathogen incidence ranged from 3 to 39%. F. graminearum incidence using BTF with seed asepsis varied from 0.5 to 1.5% and BTF without seed asepsis presented a pathogen incidence of 5.0 to 12.5%. The Blotter test with freezing was more efficient to detect P. grisea while the PDA medium was more efficient to detect F. graminearum.

scholarly journals Productivity and quality of Moina sp. cultivated with various culture medium

2021 ◽  
Vol 20 (2) ◽  
pp. 148-162
Author(s):  
Taufik Shidik Adi Nugroho Shidik ◽  
Julie Ekasari ◽  
Dedi Jusadi ◽  
Mia Setiawati
Keyword(s):  
Fatty Acids ◽  
Organic Material ◽  
Culture Medium ◽  
Unsaturated Fatty Acids ◽  
Protein Quality ◽  
Culture Media ◽  
Mass Scale ◽  
Chlorella Sp ◽  
Study Results

Cultivation of Moina sp is still constrained by its quality, productivity, and sustainability. The alternative solution is the use of cultivation media materials that have high nutritional content and easily available in large quantities to support the quality and productivity of Moina sp. and meet the needs of live feed. The objective of the study was to evaluate the effect of various culture medium on the productivity and nutritional quality of Moina sp.. Five culture media were tested in laboratory scale, i.e. organic ingredient (BO), Chlorella sp. (Ch), Chlorella sp. + organic ingredients (ChBO), biofloc (BF) and biofloc + organic ingredients (BFBO). While in mass scale, four culture media were tested, i.e. Chlorella sp. (Ch), Chlorella sp. + Organic Ingredients (ChBO), Biofloc (BF) and Biofloc + Organic Ingredients (BFBO). The peaks of Moina sp. density in different treatments were achieved in different days. ChBO treatments significantly had higher productivity (P<0.05). The highest protein content was found in Moina sp. cultured with ChBO media, even higher than artemia. Moina sp. cultured with Chlorella sp. (Ch) showed the highest PUFA (Poly Unsaturated Fatty Acids) contents, while the highest MUFA (mono unsaturated fatty acids) contents was obtained from Moina sp. cultured with BFBO media lower than artemia. The study results indicates that different culture media produces different productivity and nutrient quality of Moina sp. The organic material combination of Chlorella sp. + organic material (ChBO) was the best media to improve the productivity and protein quality of Moina sp.    Keywords : Biofloc, Chlorella sp., Moina sp., organic matter, productivity, quality   ABSTRAK   Budidaya Moina sp. masih terkendala pada kualitas, produktivitas dan kestabilan dalam ketersediaannya. Untuk itu diperlukan penggunaan bahan media budidaya yang memiliki kandungan nutrisi tinggi dan mudah didapat dalam jumlah banyak untuk mendukung kualitas dan produktivitas Moina sp. demi memenuhi kebutuhan pakan hidup. Tujuan penelitian yaitu mengevaluasi pengaruh berbagai media budidaya terhadap produktivitas dan kualitas nutrisi Moina sp. Lima media kultur yang diuji dalam penelitian laboratorium yaitu Bahan Organik (BO), Chlorella sp. (Ch), Chlorella sp. + Bahan Organik (ChBO), Bioflok (BF) dan Bioflok + Bahan Organik (BFBO). Sedangkan pada penelitian skala massal diuji empat media kultur yaitu Chlorella sp. (Ch), Chlorella sp. + Bahan Organik (ChBO), Bioflok (BF) dan Bioflok + Bahan Organik (BFBO). Puncak kepadatan Moina sp. pada tiap perlakuan dicapai pada hari yang berbeda. Perlakuan ChBO memiliki produktivitas yang lebih tinggi (P<0,05). Kandungan protein Moina sp. tertinggi ditemukan pada media ChBO dan bahkan lebih tinggi dari pada artemia. Moina sp. yang dibudidayakan dengan Chlorella sp. (Ch), menunjukkan kandungan PUFA tertinggi, sedangkan kandungan MUFA yang tertinggi terdapat pada Moina sp. yang dibudidayakan dengan bahan media BFBO namun masih lebih rendah jika dibandingkan dengan kandungan pada artemia. Hasil penelitian menunjukkan media kultur yang berbeda menghasilkan produktivitas dan kualitas nutrisi moina yang berbeda. Kombinasi bahan organik Chlorella + bahan organik (ChBO) merupakan media terbaik dibandingkan dengan perlakuan lainnya untuk meningkatkan produktivitas dan kualitas nutrisi terutama protein Moina sp.   Kata kunci : Bioflok, Chlorella sp., Moina sp., bahan organik, produktivitas, kualitas

scholarly journals Effect on Intermediary Metabolism and Digestive Parameters of the High Substitution of Fishmeal with Insect Meal in Sparus aurata Feed

Insects ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 965
Author(s):  
Dmitri Fabrikov ◽  
María del Carmen Vargas-García ◽  
Fernando G. Barroso ◽  
María José Sánchez-Muros ◽  
Sylvia María Cacua Ortíz ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Gut Microbiome ◽  
Potential Role ◽  
Sparus Aurata ◽  
Growth Parameters ◽  
Fatty Acid Fraction ◽  
Fish Growth ◽  
Streptococcus Dysgalactiae ◽  
Growth Indices ◽  
Fish Performance

Hermetia illucens and Tenebrio molitor were tested on account of their potential to replace fish protein in feed. Two levels of replacement for H. illucens, 30% and 50% (H30 and H50), and one for T. molitor, 50% (T50), as well as an additional diet with a modified fatty acid fraction (H50M), were investigated in relation to juvenile Sparus aurata growth indices, enzyme activities and gut microbiome. A T50 diet showed similar results to a control (C) diet, with no significant differences regarding morphological indices and minor differences for nutritional indices. Regarding the gut microbiome, H50M was the diet which showed the more similar prokaryotic community to C, which suggests that fatty acid fractions might influence the composition of the gut microbiome. Nevertheless, differences appeared to be related to a redistribution of dominant species, while changes in species affiliation were limited to minoritary species. The positive correlation between some of these minoritary species (Peptostreptococcus russellii, Streptococcus dysgalactiae and Weisella confusa) and several fish growth parameters might explain differences between control and insect diets. Deciphering such uncertainty and revealing the potential role these unusual species may play on fish performance should be addressed in future investigations.

scholarly journals Effects of Cultivation Management on Pearl Millet Yield and Growth Differed with Rainfall Conditions in a Seasonal Wetland of Sub-Saharan Africa

Agronomy ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1767
Author(s):  
Yoshihiro Hirooka ◽  
Simon K. Awala ◽  
Kudakwashe Hove ◽  
Pamwenafye I. Nanhapo ◽  
Morio Iijima
Keyword(s):  
Pearl Millet ◽  
Crop Production ◽  
Pennisetum Glaucum ◽  
Growth Parameters ◽  
Growth Period ◽  
Fertilizer Application ◽  
Sub Saharan Africa ◽  
Mineral Fertilization ◽  
Seasonal Wetlands ◽  
Sub Saharan

The production of pearl millet (Pennisetum glaucum (L.) R.Br.) is important in Namibia, in sub-Saharan Africa, owing to the prevailing low precipitation conditions. Most fields supporting crop production in northern Namibia are located in a network of seasonal wetlands. The aim of the present study was to evaluate the effects of ridging and fertilizer application on the yield and the growth of pearl millet in the seasonal wetlands under different rainfall conditions. The study was conducted for two years (2017–2018) in the experimental fields in northern Namibia, and yield, yield components, and growth parameters were evaluated in relation to the application of different fertilizers (manure and mineral) with and without ridge-furrows. Manure fertilizer application presented the highest yield in 2018, whereas mineral fertilizer application showed the highest yield in 2017. The proportion of rainfall was the highest during the mid-growth period in 2017, and the reproductive stage in 2018. Thus, pearl millet plants under manure fertilization overcame damage resulting from waterlogging stress during the seed setting stage by improving the soil and plant nutrient conditions. In contrast, the plants under mineral fertilization were more tolerant to large amounts of rain during the mid-growth period. In this study, yield was mainly determined by total dry weight, and it was closely related to panicle density in both years. Therefore, we concluded that fertilizer application, including additional fertilizer based on the growth diagnostic, could be important for improving crop production in seasonal wetlands.

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