scholarly journals Analisis Aplikasi Media Tanam Terhadap Pertumbuhan Bibit Tembakau Bes-NO H382 Pada Sistem Pembibitan Semi Float Bed

2021 ◽  
Author(s):  
Siti Humaida ◽  
◽  
Diana Nuvita ◽  
Dinda Ayu Kusumawati ◽  
◽  
...  
Keyword(s):  
Sphagnum Moss ◽  
Top Soil

Produktivitas tembakau Bes-NO H 382 sebagai bahan baku pembalut dan pembungkus cerutu sangat dipengaruhi oleh kualitas bibit. Mutu bibit akan terjamin apabila aplikasi media tanam sesuai dengan kebutuhan nutrisi untuk pertumbuhan bibit sekaligus mendukung daya adaptasi setelah pindah ke lapangan. Sistem pembibitan dengan pembibitan semi float bed merupakan upaya pengembangan sistem pembibitan modern yang menggunakan pottray sangat menghemat tenaga kerja dengan pertumbuhan bibit yang sehat dan seragam. Oleh karena itu, penelitian ini bertujuan untuk menganalisis aplikasi media tanam pada sistem pembibitan semi float bed terhadap pertumbuhan bibit tembakau Bes-NO H 382. Penelitian dilaksanakan di lahan pembibitan tembakau Politeknik Negeri Jember pada bulan Maret-Mei 2020. Metode Rancangan Acak Kelompok (RAK) faktor tunggal dengan perlakuan berupa perbandingan komposisi media tanam sphagnum moss dan top soil, sedangkan uji lanjut menggunakan BNT 5%. Hasil penelitian menunjukkan bahwa 1) Pertumbuhan bibit tembakau Bes-NO H 382 pada sistem semi float bed dipengaruhi oleh aplikasi komposisi media tanam dengan hasil pertumbuhan bibit terbaik pada perlakuan komposisi sphagnum moss:top soil 90:10 dan 100:0 dengan rerata tinggi bibit 3,61-4,06 cm, diameter batang 2,48-2,54 mm, berat brangkasan basah 1,84-1,92 gram dan berat brangkasan kering 0,15-0,17 gram pada umur bibit 39 hss, 2) Jumlah daun tidak dipengaruhi oleh aplikasi media tanam tetapi daya adaptasi bibit sangat baik di lahan karena prosentase hidup bibit mencapai 75-100% pada semua perlakuan.

Isaac Bayley Balfour, Sphagnum moss, and the Great War (1914–1918)

2015 ◽  
Vol 42 (1) ◽  
pp. 1-9 ◽  
Author(s):  
P. G. Ayres
Keyword(s):  
United States ◽  
Academic Career ◽  
The United States ◽  
Royal Botanic Garden ◽  
Wound Dressings ◽  
Sphagnum Moss ◽  
Botanic Garden ◽  
Working Model ◽  
Sphagnum Bog ◽  
The Great War

Isaac Bayley Balfour was a systematist specializing in Sino-Himalayan plants. He enjoyed a long and exceptionally distinguished academic career yet he was knighted, in 1920, “for services in connection with the war”. Together with an Edinburgh surgeon, Charles Cathcart, he had discovered in 1914 something well known to German doctors; dried Sphagnum (bog moss) makes highly absorptive, antiseptic wound dressings. Balfour directed the expertise and resources of the Royal Botanic Garden, Edinburgh (of which he was Keeper), towards the identification of the most useful Sphagnum species in Britain and the production of leaflets telling collectors where to find the moss in Scotland. By 1918 over one million such dressings were used by British hospitals each month. Cathcart's Edinburgh organisation, which received moss before making it into dressings, proved a working model soon adopted in Ireland, and later in both Canada and the United States.

Colonization of decomposing Sphagnum moss litter by mycorrhizal roots in two types of peatland ecosystems

2014 ◽  
Vol 10 ◽  
pp. 113-121
Author(s):  
Mateusz Wilk ◽  
Julia Pawłowska ◽  
Marta Wrzosek ◽  
Michał Gorczak ◽  
Małgorzata Suska-Malawska
Keyword(s):  
Molecular Identification ◽  
Decomposition Process ◽  
Sphagnum Moss ◽  
Forest Communities ◽  
Litter Bags ◽  
Poor Fen ◽  
The Poor ◽  
Ectomycorrhizal Roots ◽  
Mycorrhizal Roots ◽  
Ectomycorrhizal Morphotypes

During a 35-month study on the decomposition of Sphagnum moss litter in poor fen and pine bog forest, an intensive colonization of litter-bags by mycorrhizal roots was observed during the decomposition process. Content of mycorrhizal roots in litter-bags, expressed as % mass of roots, was generally increasing during the decomposition in pine bog forest, and fluctuating during decomposition on poor fen, although in both cases the results were statistically insignificant. Two morphotypes of ericoid roots and two morphotypes of ectomycorrhizal roots were recorded from litter-bags on poor fen during the decomposition experiment, while in pine bog forest one morphotype of ericoid and nine morphotypes of ectomycorrhizal roots were recorded. Molecular identification of mycorrhizal roots succeeded only in the case of one ericoid and six putatively ectomycorrhizal morphotypes. Most morphotypes were recorded only once during the whole 35-month decomposition period, and only one ericoid and one ectomycorrhizal morphotypes were shared between the poor fen and pine bog forest communities.

Flat-cutting loosening in the system of fallow cultivation of chernozem soil and weediness of crops

2017 ◽  
Vol 1 (92) ◽  
pp. 78-84
Author(s):  
G. Koval ◽  
M. Kaliyevskiy ◽  
V. Yeshchenko ◽  
I. Martyniuk ◽  
N. Martyniuk
Keyword(s):  
Species Composition ◽  
Crop Rotation ◽  
Field Experiments ◽  
Early Spring ◽  
Weed Species ◽  
Wild Mustard ◽  
Spring Crop ◽  
White Campion ◽  
Investigation Methods ◽  
Top Soil

The article presents the results of field experiments, where on the basis of podsolized heavy loamy chernozem the influence of replacement of mouldboard ploughing with nonmouldboard cultivation over top soil weediness, weediness at the beginning and end of spring crop vegetation and weed species composition before harve sting were studied. Investigation methods of main fall ploughing under spring crops of five-course rotation: soybeans–rape–wheat–flax–barley at the depths of 15-17, 20-22, 25-27 cm were conducted after post-harvest field tillage. Analysis of data on contamination of the top soil with weed seeds have shown that with the replacement of fall main mouldboard ploughing gwith nonmouldboard cultivation the figure before sowing of all crops withdifferent tillage depthat crop rotation average increased by 131-132%. It caused the increase of actual weed infestation of all crops and at the beginning and end of spring crop vegetationafter different depths of fall nonmouldboard cultivation compared with ploughing at crop rotation average it was 120–132 and 123-138%respectively. Species composition of weeds afterthe replacement of main fall mouldboard ploughing with nonmouldboard cultivation remained mainlyunchanged; although in rape plantings the proportion of white campion and early spring weed sincreased, in wheat plantings– wild mustard andscentless mayweed, insoybean plantings– late spring weeds, in flax plantings– white campion, and in barley plantings– scarlet pimpernel.

scholarly journals Functional diversity and trait composition of vascular plant and Sphagnum moss communities during peatland succession across land uplift regions

2021 ◽  
Author(s):  
Anna M. Laine ◽  
Tapio Lindholm ◽  
Mats Nilsson ◽  
Oleg Kutznetsov ◽  
Vincent E. J. Jassey ◽  
...  
Keyword(s):  
Functional Diversity ◽  
Vascular Plant ◽  
Sphagnum Moss ◽  
Land Uplift

scholarly journals 2,4-Dichlorophenoxyacetic acid degradation in methanogenic mixed cultures obtained from Brazilian Amazonian soil samples

2021 ◽  
Author(s):  
Gunther Brucha ◽  
Andrea Aldas-Vargas ◽  
Zacchariah Ross ◽  
Peng Peng ◽  
Siavash Atashgahi ◽  
...  
Keyword(s):  
Microbial Community Composition ◽  
High Mobility ◽  
16S Rrna Gene Sequencing ◽  
Dichlorophenoxyacetic Acid ◽  
Rrna Gene ◽  
Deep Soil ◽  
Anoxic Environments ◽  
Top Soil ◽  
Significant Enrichment ◽  
2,4 Dichlorophenoxyacetic Acid

Abstract2,4-Dichlorophenoxyacetic acid (2,4-D) is the third most applied pesticide in Brazil to control broadleaf weeds in crop cultivation and pastures. Due to 2,4-D’s high mobility and long half-life under anoxic conditions, this herbicide has high probability for groundwater contamination. Bioremediation is an attractive solution for 2,4-D contaminated anoxic environments, but there is limited understanding of anaerobic 2,4-D biodegradation. In this study, methanogenic enrichment cultures were obtained from Amazonian top soil (0—40 cm) and deep soil (50 -80 cm below ground) that biotransform 2,4-D (5 µM) to 4-chlorophenol and phenol. When these cultures were transferred (10% v/v) to fresh medium containing 40 µM or 160 µM 2,4-D, the rate of 2,4-D degradation decreased, and biotransformation did not proceed beyond 4-chlorophenol and 2,4-dichlorophenol in the top and deep soil cultures, respectively. 16S rRNA gene sequencing and qPCR of a selection of microbes revealed no significant enrichment of known organohalide-respiring bacteria. Furthermore, a member of the genus Cryptanaerobacter was identified as possibly responsible for phenol conversion to benzoate in the top soil inoculated culture. Overall, these results demonstrate the effect of 2,4-D concentration on biodegradation and microbial community composition, which are both important factors when developing pesticide bioremediation technologies.

scholarly journals Characterization of a Natural, Stable, Reversible and Colourful Anthocyanidin Network from Sphagnum Moss Based Mainly on the Yellow Trans-Chalcone and Red Flavylium Cation Forms

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 709
Author(s):  
Helge Berland ◽  
Øyvind M. Andersen
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Cell Wall ◽  
Peat Moss ◽  
Sphagnum Moss ◽  
Naturally Occurring ◽  
Two Component ◽  
Colour System ◽  
The Common ◽  
Cis And Trans

Anthocyanins with various functions in nature are one of the most important sources of colours in plants. They are based on anthocyanidins or 3-deoxyanthocyanidins having in common a C15-skeleton and are unique in terms of how each anthocyanidin is involved in a network of equilibria between different forms exhibiting their own properties including colour. Sphagnorubin C (1) isolated from the cell wall of peat moss (Sphagnum sp.) was in fairly acidic and neutral dimethyl sulfoxide characterized by nuclear magnetic resonance (NMR) and ultraviolet–visible (UV–vis) absorption techniques. At equilibrium, the network of 1 behaved as a two–component colour system involving the reddish flavylium cationic and the yellow trans–chalcone forms. The additional D- and E-rings connected to the common C15-skeleton extend the π-conjugation within the molecule and provide both bathochromic shifts in the absorption spectra of the various forms as well as a low isomerization barrier between the cis- and trans-chalcone forms. The hemiketal and cis-chalcone forms were thus not observed experimentally by NMR due to their short lives. The stable, reversible network of 1 with good colour contrast between its two components has previously not been reported for other natural anthocyanins and might thus have potential in future photochromic systems. This is the first full structural characterization of any naturally occurring anthocyanin chalcone form.

Microbial and biochemical changes induced by rotation and tillage in a soil under barley production

1993 ◽  
Vol 73 (1) ◽  
pp. 39-50 ◽  
Author(s):  
D. A. Angers ◽  
N. Bissonnette ◽  
A. Légère ◽  
N. Samson
Keyword(s):  
Alkaline Phosphatase ◽  
Organic Matter ◽  
Microbial Biomass ◽  
Phosphatase Activity ◽  
Alkaline Phosphatase Activity ◽  
Soil Layer ◽  
Red Clover ◽  
Organic C ◽  
Top Soil ◽  
Total Organic C

Crop rotations and tillage practices can modify not only the total amount of organic matter (OM) in soils but also its composition. The objective of this study was to determine the changes in total organic C, microbial biomass C (MBC), carbohydrates and alkaline phosphatase activity induced by 4 yr of different rotation and tillage combinations on a Kamouraska clay in La Pocatière, Quebec. Two rotations (continuous barley (Hordeum vulgare L.) versus a 2-yr barley–red clover (Trifolium pratense L.) rotation) and three tillage treatments (moldboard plowing (MP), chisel plowing (CP) and no-tillage (NT)) were compared in a split-plot design. Total organic C was affected by the tillage treatments but not by the rotations. In the top soil layer (0–7.5 cm), NT and CP treatments had C contents 20% higher than the MP treatment. In the same soil layer, MBC averaged 300 mg C kg−1 in the MP treatment and up to 600 mg C kg−1 in the NT soil. Hot-water-extractable and acid-hydrolyzable carbohydrates were on average 40% greater under reduced tillage than under MP. Both carbohydrate fractions were also slightly larger in the rotation than in the soil under continuous barley. The ratios of MBC and carbohydrate C to total organic C suggested that there was a significant enrichment of the OM in labile forms as tillage intensity was reduced. Alkaline phosphatase activity was 50% higher under NT and 20% higher under CP treatments than under MP treatment and, on average, 15% larger in the rotation than in the continuous barley treatment. Overall, the management-induced differences were slightly greater in the top layer (0–7.5 cm) than in the lower layer of the Ap horizon (7.5–15 cm). All the properties measured were highly correlated with one another. They also showed significant temporal variations that were, in most cases, independent of the treatments. Four years of conservation tillage and, to a lesser extent, rotation with red clover resulted in greater OM in the top soil layer compared with the more intensive systems. This organic matter was enriched in labile forms. Key words: Soil management, soil quality, organic matter, carbohydrates, microbial biomass, phosphatase

Sphagnum cyclophyllum: a Second Site in Nova Scotia for a Rare Sphagnum Moss

Evansia ◽  
2017 ◽  
Vol 34 (1) ◽  
pp. 6-8 ◽  
Author(s):  
Harold Clapp ◽  
Thomas Neily
Keyword(s):  
Nova Scotia ◽  
Sphagnum Moss
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