Effects of processing on peat moss microflora

1988 ◽  
Vol 34 (2) ◽  
pp. 131-133 ◽  
Author(s):  
Yvon Cormier ◽  
Anne Mériaux ◽  
Gilles Brochu
Keyword(s):  
Peat Soil ◽  
Dry Weight ◽  
Peat Moss ◽  
Processing Plant ◽  
Soil Drying ◽  
Sphagnum Peat ◽  
Plant Soil ◽  
Sphagnum Peat Moss ◽  
Large Numbers

We studied the microflora of Quebec sphagnum peat moss samples taken from five different locations in a peat moss processing plant: soil, drying stacks, sedimented dust (walls and floor), and in bagged peat moss. Large numbers of microorganisms were found; the predominant ones were of the genus Monocillium (up to 112 × 106 colonies/g of dry peat) and the genus Penicillium (320 × 104 colonies/g dry weight). These moulds were more abundant in the processed peat moss than in the peat soil (e.g., Monocillium: soil, 138 × 103; processed peat, 112 × 106). Aspergillus spp. were absent in all five sample sites. We conclude that Quebec peat moss contains large quantities of microorganisms and that moulds become more concentrated during the processing of the peat from the soil to the final product.

scholarly journals Plant growth response of subirrigated salvia 'Vista Red' to increasing water levels at two substrates

2016 ◽  
Vol 34 (2) ◽  
pp. 202-209 ◽  
Author(s):  
Rhuanito S Ferrarezi ◽  
Marc W van Iersel ◽  
Roberto Testezlaf
Keyword(s):  
Plant Growth ◽  
Net Photosynthesis ◽  
Dry Weight ◽  
Water Levels ◽  
Pine Bark ◽  
Disease Spread ◽  
Peat Moss ◽  
Data Logger ◽  
Sphagnum Peat ◽  
Sphagnum Peat Moss

ABSTRACT: Subirrigation applies water and nutrients to the bottom of pots without wetting leaves, improving water use and reducing disease spread compared to overhead irrigation systems. However, water levels applied within the benches are often higher than required to promote capillary action, applying more water than needed and wasting pumping energy. The present study was conducted to evaluate the effect of different water levels on plant growth of subirrigated salvia (Salvia splendens) 'Vista Red' in two substrates. Five water levels (0.75, 1.5, 3.0, 4.5, and 6.0 cm) and two substrates {pine bark: sphagnum peat moss and peat: perlite (both 75%: 25% v/v)} were tested, with four replications. Substrate moisture was monitored by capacitance-type sensors connected to a multiplexer and data logger. Volumetric water content (VWC) was higher in peat: perlite (0.34 to 0.75 m3/m3) than pine bark: sphagnum peat moss (0.21 to 0.60 m3/m3) at all water levels. Higher water levels increased VWC in both substrates. The leaf chlorophyll index was 4% lower at the 6.0 cm compared to the other treatments in peat: perlite (p<0.0001). Stomatal conductance decreased overtime; but increased with the increase in water levels in peat: perlite (p<0.0001). Different water levels had no effect on leaf area, net photosynthesis, number of branches and leaves, and shoot dry weight (p>0.05), an indication that the different water levels do not affect the plant growth. However, shoot plant height increased 13% in pine bark: sphagnum peat moss (p=0.0096) and 17% in peat: perlite (p=0.0335) as water levels increased. Water levels of 1.5 cm and higher can be recommended for pine bark: sphagnum peat moss or peat: perlite in subirrigation, applying water according to plant needs, optimizing plant growth and reducing the nutrient solution pumping costs compared to systems that apply higher water levels.

REMOVAL OF ZINC (II) FROM AQUEOUS SOLUTIONS BY ROMANIAN SPHAGNUM PEAT MOSS

2007 ◽  
Vol 6 (3) ◽  
pp. 205-209 ◽  
Author(s):  
Angelica Kicsi ◽  
Doina Bilba ◽  
Matei Macoveanu
Keyword(s):  
Aqueous Solutions ◽  
Peat Moss ◽  
Sphagnum Peat ◽  
Sphagnum Peat Moss

Nutritional and physiological responses of the dicotyledonous halophyte Sarcocornia fruticosa to salinity

2017 ◽  
Vol 65 (7) ◽  
pp. 573 ◽  
Author(s):  
Pedro García-Caparrós ◽  
Alfonso Llanderal ◽  
Maribela Pestana ◽  
Pedro José Correia ◽  
María Teresa Lao
Keyword(s):  
Dry Weight ◽  
Biofuel Production ◽  
Peat Moss ◽  
Organic Osmolytes ◽  
Salinity Treatment ◽  
Tissue Water ◽  
Plant Parts ◽  
Sphagnum Peat Moss ◽  
Net Uptake ◽  
Sarcocornia Fruticosa

Sarcocornia fruticosa (L.) A.J. Scott is a dicotyledonous halophyte that grows in areas with an arid climate such as the marshes of southern Spain. The species has potential uses for saline agriculture and biofuel production, but the effects of salt stress on its nutrition and physiology remain unclear. Plants of S. fruticosa were grown in pots with a mixture of sphagnum peat-moss and Perlite. In order to evaluate the effects of different levels of salinity, five treatments using different NaCl concentrations (10 (control), 60, 100, 200 and 300 mM NaCl) were applied over a period of 60 days. At the end of the experiment, the dry weight, the biomass allocation and the tissue water content were measured for each salinity treatment. The net uptake of various nutrients and their translocation rates were calculated for each salt treatment. Salt loss, shedding of plant parts and succulence in shoots were evaluated together with the K+/Na+ ratio, K-Na selectivity, concentrations of osmolytes and their estimated contributions to the osmotic potential. Our results showed that S. fruticosa can maintain its major physiological processes at 60 mM NaCl without significant dry weight reduction. Higher salinity resulted in negative values for net uptake and translocation rates from roots to shoots of N and P. As might be predicted from other dicotyledonous halophytes, S. fruticosa plants increased Cl– and Na+ uptake using both as osmotica instead of organic osmolytes. However, to survive salinity, this species has also evolved others mechanisms such as shedding old shoots, increased succulence in shoots at higher salt concentrations and the ability to maintain a lower K+/Na+ ratio and higher K-Na selectivity in all organs.

scholarly journals 819 PB 240 PERFORMANCE OF EVERGREEN AZALEAS AS AFFECTED BY SOIL AMENDMENTS AND LANDSCAPE EXPOSURE

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 550f-550
Author(s):  
John C. Pair
Keyword(s):  
Soil Amendments ◽  
Peat Moss ◽  
Numerous Species ◽  
Sphagnum Peat ◽  
South Central ◽  
Sphagnum Peat Moss ◽  
Better Than

Since 1974, numerous species and cultivars of evergreen azaleas have been evaluated for hardiness and adaptability to south central Kansas (zone 6). Selections included Kurumes, Gable hybrids, Shammarello hybrids and others in various amended beds and in several landscape exposures. Hardiest cultivars include `Boudoir', `Caroline Gable', `Herbert', `Karens', `Pride's Pink', `Purple Splendor', and `Snowball' which flowered following -18F (-28C). Moderately hardy were `Elsie Lee', `Holland', `Girard Roberta' and `James Gable'. Best hardiness was found in cultivars and hybrids with Rhododendron kaempferi, and R. yedoense var. poukhanense parentage. Plants in soil amended with sphagnum peat moss or peat plus sulfur were superior to those in soil containing cotton burrs. Winter shade proved valuable in providing the best landscape site and northeast was generally better than a northwest exposure.

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