Growth Responses of Typha latifolia and Scirpus acutus to Atrazine Contamination

1996 ◽  
Vol 57 (2) ◽  
pp. 307-314 ◽  
Author(s):  
M. M. Langan ◽  
K. D. Hoagland
Keyword(s):  
Typha Latifolia ◽  
Growth Responses ◽  
Scirpus Acutus ◽  
Atrazine Contamination

Wetland Treatment of Pulp Mill Wastewater

1994 ◽  
Vol 29 (4) ◽  
pp. 241-247 ◽  
Author(s):  
J. A. Moore ◽  
S. M. Skarda ◽  
R. Sherwood
Keyword(s):  
Plant Species ◽  
Biochemical Oxygen Demand ◽  
Aquatic Plant ◽  
Typha Latifolia ◽  
Oxygen Demand ◽  
Pulp Mill ◽  
Colour Removal ◽  
Scirpus Acutus ◽  
Wetland Treatment ◽  
Spike Rush

Ten wetland ponds, each 1430 m2 (1/3 acre) in area are being utilized to evaluate the treatment of wastewater from a pulp mill. The ponds are being operated at a depth of 46 cm (18″) and detention times are 2 and 10 days. Six of the ponds have been planted to cattails (Typha latifolia) and three to bulrush (Scirpus acutus). One of the ponds is filled with large (150 mm) stone to compare a subsurface non-plant system. In 24 stock tanks, 8 aquatic plant species (Cattail, Hardstem Bulrush, Bolander's Rush, Common Spike Rush, Water Mannagrass, Beaked Sedge, Water Parsley and Yellow Pond Lily) are being grown to evaluate the effect of plants in the wetland treatment of wastewater. These same species are being evaluated in a larger area for competitiveness and hardiness in the wastewater. The ponds were planted in the winter of 1990/91. Results of this work on treatment of biochemical oxygen demand, solids and colour removal will be reported. Removals are in the range of 55%, 70% and less than 5% for the three parameters, respectively.

MICROPROPAGATION OF CHICKPEA FROM SHOOT TIP AND NODE SEGMENT

2018 ◽  
Vol 24 (2) ◽  
Author(s):  
J. D. BARSHILE
Keyword(s):  
Shoot Tip ◽  
Root Induction ◽  
Multiple Response ◽  
Ms Medium ◽  
Growth Responses ◽  
Rapid Multiplication ◽  
Micro Propagation ◽  
G 12 ◽  
Better Than

Present investigation was undertaken to standardize technique for in vitro micro-propagation of chickpea( Cicer arietinum ) cultivar Vishwas (Phule G 12). Micropropagation method for chickpea was established and this method enabled much more efficient propagation of plants. The present work was aimed at evolving a protocol for rapid multiplication of chickpea using micropropagation technique. Explants from shoot tip and node segment were cultured on MS medium supplemented with different concentrations of BAP and Kinetin (1.0 to 2.5 mg/l) and their growth responses like shooting were elucidated. The maximum multiple response was observed with 2 mg/l concentration of BAP from both types of explant. The highest number of shoots (12.5 ± 0.3) was achieved on MS medium with 2 mg/l BAP using node segments. The medium supplemented with 2 mg/l of BAP was found better than all other concentrations. Individual shoots were transferred to IBA and IAA (1.0-1.5 mg/l) for root induction. MS medium supplemented with 2 mg/l of IBA proved better for rooting. Rooted plantlets were successfully hardened in greenhouse and established in the pot.

ALTERNATIVE P-FERTILISERS FOR NORTHLAND SOILS

1986 ◽  
pp. 229-232
Author(s):  
P.W. Shannon
Keyword(s):  
Phosphate Rock ◽  
Growth Responses ◽  
Triple Superphosphate ◽  
Rock Phosphates ◽  
Distribution Costs ◽  
Phosphate Retention ◽  
Sechura Phosphate Rock ◽  
Local Product ◽  
Application Frequency ◽  
Chatham Rise Phosphorite

Increasing material, processing, and distribution costs have raised superphosphate prices to a point where many farms cannot support the costs of meeting maintenance phosphate requires men& Alternatives to superphosphate, particularly those that have lower processing costs and contain more P, may offer a solution to the problem provided they are agronomically as effective. Phosphate rock may indeed be such an alternative. Preliminary results from a series of five trials in Northland show that on soils of moderate P fertility, with low phosphate retention (PR) and high pH (5.9.6.0), initial pasture growth responses to rock phosphates are smaller than those from single or triple superphosphate. On one soil of higher PR and lower pH, the differences in yield between the rock-phosphates and the super. phosphates were smaller. Of the rock phosphates tested, Sechura and North Carolina (unground and ungranulated) tended to be more effective than ground and granulated Chatham Rise phosphorite. The effect on production of applying fertilisers once every three years, as opposed to annual applications is being investigated using triple superphosphate and Sechura phosphate rock. After two years, production levels appear largely unaffected by differences in application frequency. A comparison of locally-produced superphosphate with a reference standard showed that both performed similarly, indicating that the local product was of satisfactory quality.

“TYPHA LATIFOLIA” EXTRACTOR EFICAZ DE FÓSFORO EN SUELOS HIDROMÓRFICOS: COMPARACIÓN ENTRE POBLACIONES DE CULTIVO LOCAL Y TECNOSOL EUTRÓFICO

Ciencia ◽  
2018 ◽  
Vol 20 (1) ◽  
pp. 73
Author(s):  
A Simoes ◽  
L Otero ◽  
F Macias ◽  
P Guevara
Keyword(s):  
Typha Latifolia

La eutrofización de suelos y aguas es uno de los principales problemas que amenazan la conservación de especies y hábitats. Estudios recientes muestran que el P también puede afectar sustancialmente a la pérdida de biodiversidad. En contraste con el N, que puede eliminarse por lixiviación, el P es adsorbido por el suelo pudiendo permanecer a lo largo del tiempo. Se realizó un estudio para evaluar la capacidad de la Typha latifolia para extraer el P del suelo. Para ello se  consideró un Technosol eutrófico (ET), altamente enriquecido con P y un suelo natural oligotrófico (NS). En los suelos se analizó el contenido total de Fe, Al, C orgánico, oxihidróxidos amorfos de Al/Fe, formas geoquímicas de P. Los resultados muestran  una concentración significativamente más elevada de P total  y biodisponible en ET. En consonancia con una alta concentración de P en ET, la población de Thypha mostró también una concentración significativa superior de P comparando con las que crecieron en el NS. Estos resultados muestran que la totora responde positivamente a concentraciones muy elevadas de P en el medio y, por lo tanto, debe ser considerada como una especie muy eficiente para reducir la eutrofización del suelo.

Comparison of Growth Responses of 2-Day-Old Pigs to Streptomycin, Aureomycin, and Crude APF, Alone and in Combination with B12

1952 ◽  
Vol 11 (1) ◽  
pp. 97-102 ◽  
Author(s):  
B. E. Sheffy ◽  
R. H. Grummer ◽  
P. H. Phillips ◽  
G. Bohstedt
Keyword(s):  
Growth Responses
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