Sclerophylly and Foliar Nutrient Status of Mediterranean-Climate Plant Communities in Southern Australia

1990 ◽  
Vol 38 (5) ◽  
pp. 459 ◽  
Author(s):  
RL Specht ◽  
PW Rundel
Keyword(s):  
Plant Communities ◽  
Crude Protein ◽  
Mediterranean Climate ◽  
Phosphorus Content ◽  
Specific Area ◽  
Dry Weight ◽  
Nutrient Status ◽  
Foliar Phosphorus ◽  
Foliar Nutrient ◽  
Leaf Specific Area

An increase (percentage dry weight) in both lignin and cellulose (with a greater proportion of cellulose than lignin being formed) is associated with a decrease in the concentration of phosphorus (and of other related elements) per unit dry weight in the leaves of sunlit overstorey species, of both sclerophyll and savannah communities in the mediterranean climate of southern Australia. Simultaneously, crude protein decreases. Leaves become increasingly sclerophyllous (with a higher Sclerophyll Index), with lower crude protein (cytoplasm) per unit dry weight; thicker leaves with lower leaf specific area result. The degree of sclerophylly per unit foliar phosphorus content is a little higher in understorey species which are partially shaded by the overstorey canopy.

scholarly journals ASPECTOS ANATÔMICOS E FISIOLÓGICOS DE FOLHAS DE Mimosa scabrella DE ÁREAS COM DIFERENTES GRAUS DE SUCESSÃO

FLORESTA ◽  
2011 ◽  
Vol 41 (3) ◽  
Author(s):  
Larissa De Bortollo Chiamolera ◽  
Alessandro Camargo Ângelo ◽  
Maria Regina Boeger ◽  
Fernando Correia Araújo
Keyword(s):  
Stomatal Conductance ◽  
Open Field ◽  
Leaf Morphology ◽  
Water Reservoir ◽  
Specific Area ◽  
Dry Weight ◽  
Palisade Parenchyma ◽  
Adaxial Epidermis ◽  
Leaf Specific Area ◽  
Cuticle Thickness

O objetivo deste trabalho foi verificar a influência de diferentes condições de luminosidade presentes em folhas de Mimosa scabrella Benthan plantadas em áreas com diferentes graus de sucessão nas margens do Reservatório Iraí, PR. Foram avaliados aspectos morfológicos (área foliar, peso seco, área foliar específica), anatômicos (espessuras de cutícula, epiderme adaxial, parênquima paliçádico, parênquima lacunoso, epiderme adaxial e espessura total), fisiológicos (taxa de fotossíntese, condutância estomática e transpiração) e desenvolvimento das plantas (altura, diâmetro e sobrevivência até os 18 meses). Para os parâmetros morfológicos, M. scabrella apresentou diferença significativa para a área foliar específica, que foi maior para os indivíduos da capoeira. Diferenças significativas foram encontradas para a espessura da epiderme adaxial e do parênquima paliçádico. A epiderme adaxial foi maior na área de capoeira, enquanto que o parênquima paliçádico maior na área aberta. Indivíduos da área aberta apresentaram maior taxa de transpiração e condutância estomática. Tanto a altura quanto o diâmetro não mostraram diferença significativa entre as áreas. A sobrevivência foi considerada insatisfatória para ambas as áreas, porém foi ligeiramente maior na capoeira. Esses resultados, aliados ao comportamento natural da espécie, sugerem que M. scabrella deve ser implantada em densidades maiores.Palavras-chave:  Morfoanatomia foliar; fisiologia, variação de luz; recuperação de área degradada; silvicultura de espécies nativas. AbstractAnatomical and physiological features of Mimosa scabrella leaves growing on areas with different succession stages This study aims to evaluate the influence of light conditions at different stages of succession in leaves of Mimosa scabrella Benthan planted in Iraí’s water reservoir margins, State of Paraná, Brazil. We evaluated leaf morphology (area, dry weight, specific area), anatomy (cuticle thickness, adaxial epidermis, palisade parenchyma, parenchyma spongy, adaxial epidermis and total thickness), physiology (photosynthesis rate, stomatal conductance, transpiration) and plant growth (height, diameter) and survival up to age of 18 months. Plants of Mimosa scabrella of natural regeneration showed greater leaf specific area than those of planted individuals. Significant differences were found on thickness of the adaxial epidermis and palisade parenchyma. The adaxial epidermis was higher in regenerating area, whereas the palisade parenchyma was higher in open field. Plants of open field presented higher values of transpiration and stomatal conductance. Concerning height and diameter growth, plants of both areas showed no significant differences. Survival was considered unsatisfactory for both areas, but was slightly higher in regenerating area. According to M. scabrella behavior in natural conditions, the results suggest that this species must be implanted in greater densities.Keywords:              Leaf morphology; leaf anatomy; physiology; light; land recuperation; native tree species.

Linking water sources with foliar nutrient status in upland plant communities in the Everglades National Park, USA

Ecohydrology ◽  
2009 ◽  
Vol 2 (1) ◽  
pp. 42-54 ◽  
Author(s):  
Amartya K. Saha ◽  
Leonel da Silviera Lobo O'Reilly Sternberg ◽  
Fernando Miralles-Wilhelm
Keyword(s):  
Plant Communities ◽  
National Park ◽  
Nutrient Status ◽  
Water Sources ◽  
Everglades National Park ◽  
Foliar Nutrient

Use of Growth Measurements and Foliar Nutrient Content as Criteria for Clonal Selection in Tea (Camellia sinensis)

1991 ◽  
Vol 27 (1) ◽  
pp. 47-52 ◽  
Author(s):  
H. E. Nyirenda
Keyword(s):  
Phosphorus Content ◽  
Clonal Selection ◽  
Ground Level ◽  
Nutrient Content ◽  
Early Years ◽  
Foliar Phosphorus ◽  
Foliar Nutrient ◽  
Tea Plants ◽  
Growth Characters ◽  
Number Of Branches

SUMMARYA selection programme conducted on young clonal tea plants grown in large sleeved bags and in a field trial established criteria for selecting high yielding field clones on the basis of their growth in early years. Bush area, number of branches and shoots per bush, and foliar phosphorus content at the second crop peak were correlated with yield but the correlation between stem circumference at ground level and yield was inconsistent. It is therefore concluded that all these bush and growth characters, apart from stem circumference, may be reliably used to predict and select high yielding tea clones.

Intraseasonal growth and nutrient composition of jack pine needles following fertilization

1981 ◽  
Vol 11 (3) ◽  
pp. 696-702 ◽  
Author(s):  
L. D. Morrow ◽  
V. R. Timmer
Keyword(s):  
Nitrogen Fertilization ◽  
Dry Matter ◽  
Dry Weight ◽  
Nutrient Status ◽  
Nutrient Content ◽  
Growing Season ◽  
Jack Pine ◽  
Matter Production ◽  
Foliar Nutrient ◽  
Seasonal Responses

Seasonal responses in dry weight, nutrient concentration, and nutrient content of current and year-old needles of plantation jack pine (Pinusbanksiana Lamb.) were examined after treatment with factorial combinations of N, P, and K applied at 0 and 100 kg/ha, respectively. Nitrogen fertilization not only increased dry matter production and N composition of new needles, but also increased uptake of P, K, Ca, and Mg by prolonging the active growing season. Net translocation of N from old to new foliage occurred only in N-deficient trees at the peak of the growing season. Application of P and (or) K failed to increase growth and nutrient uptake of needles, except for P additions which induced luxury consumption of phosphorous. Diagnosis of foliar nutrient status indicated P and K as sufficient and N as deficient for growth in this stand.

Water source utilization and foliar nutrient status differs between upland and flooded plant communities in wetland tree islands

2010 ◽  
Vol 18 (3) ◽  
pp. 343-355 ◽  
Author(s):  
Amartya K. Saha ◽  
Leonel da Silveira O’Reilly Sternberg ◽  
Michael S. Ross ◽  
Fernando Miralles-Wilhelm
Keyword(s):  
Plant Communities ◽  
Nutrient Status ◽  
Water Source ◽  
Tree Islands ◽  
Foliar Nutrient

scholarly journals Growth and Nutrient Status of Containerized Shrubs Grown in Composts Containing Waxed Corrugated Cardboard and Other Organic Wastes

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 894F-895
Author(s):  
D.A. Raymond ◽  
C. Chong ◽  
R.P. Voroney
Keyword(s):  
Poultry Manure ◽  
Dry Weight ◽  
Nutrient Status ◽  
Pine Bark ◽  
Nutrient Deficiencies ◽  
Shoot Dry Weight ◽  
Normal Ranges ◽  
Foliar Nutrient ◽  
Physocarpus Opulifolius ◽  
Corrugated Cardboard

Four containerized deciduous ornamental shrubs, [silverleaf dogwood (Cornus alba L. `Argenteo-marginata'), red-osier dogwood (Comus sericea L.), ninebark (Physocarpus opulifolius L.), and deutzia (Deutzia gracilis L.)] were grown in 12 composts containing (by volume) spent mushroom substrate (50%), waxed corrugated cardboard (WCC; 0%, 25%, or 50%), and/or pulverized wood wastes (PWW; 50%, 25%, and 0%). Supplemental N as poultry manure and/or soybean wastes was added to some composts. Growth (shoot dry weight, average of two seasons) of all species was better or similar in most composts compared with two controls (100% pine bark and 80% pine bark: 15% peat: 5% sand). Deutzia grew best in 50% WCC composts and other species in 25% WCC composts. Porosity characteristics of the composts were acceptable for container growing (50% to 60% total; 25% to 30% aeration). Total soluble salts were initially high and potentially phytotoxic, particularly in the 50% WCC composts but were quickly leached and resulted in no injury to plants. There were no symptoms of nutrient deficiencies or toxicities in any of the species tested. Foliar nutrient (N, I P, K, Ca, Mg, Mn, Zn, and Fe) concentrations in all species were within normal ranges, except for low Mn and Fe concentrations in red-osier dogwood during the second season.

Methods for saving the productivity of slope lands

2020 ◽  
Author(s):  
N.A. Batyakhina N.A. ◽  
Keyword(s):  
Forest Soil ◽  
Crop Rotation ◽  
Plant Communities ◽  
Crop Production ◽  
Phosphorus Content ◽  
Gray Forest Soil ◽  
Conservation Tillage ◽  
Multicomponent Mixtures

The influence of various annual multicomponent mixtures in the crop rotation link on its productivity and fertility of gray forest soil is shown. The complexity of the structure of plant communities has reduced the share of weeds in crop production annual mix, 2.6-3.7% and conservation tillage for wheat has increased by 2.5 times the phosphorus content is 1.9 times the potassium, 12% increased productivity.

scholarly journals An Assessment of Treated Greywater Reuse in Irrigation on Growth and Protein Content of Prosopis and Albizia

Horticulturae ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. 38
Author(s):  
Naji K. Al-Mefleh ◽  
Yahia A. Othman ◽  
Maher J. Tadros ◽  
Amani Al-Assaf ◽  
Samer Talozi
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Dry Weight ◽  
World Health ◽  
Quality Analysis ◽  
Distilled Water ◽  
Albizia Lebbeck ◽  
Forage Production ◽  
Water Control ◽  
Significant Difference

This study investigated the influence of treated greywater on growth and protein content of multipurpose (forage and ornamental) transplants, Prosopis juliflora L., Prosopis tamarugo L., and Albizia lebbeck L. Transplants of tested species were irrigated with treated greywater, diluted greywater (grey + distilled water, 1:1/by volume), and distilled water (control) for seven months. Water quality analysis showed that the concentrations of nutrients and heavy metals found in the greywater were within the acceptable range compared with Jordan Institution for Standard and Metrology (JISM) and the World Health Organization (WHO) thresholds for safe use of greywater. Escherichia coli found in the greywater were lower compared to JISM and WHO guidelines for the safe use of greywater. Irrigation with treated greywater increased shoot fresh weight by 24–39% and dry weight by 34–40% compared to diluted greywater and control. No significant difference in crude protein was noticed between water treatments. Prosopis species (P. juliflora Albizia lebbeck L. and P. tamarugo Albizia lebbeck L.) had higher shoot fresh (35%) and dry weight the same species had lower crude protein (44%) when compared to Albizia lebbeck Albizia lebbeck L. The reuse of treated greywater for landscaping or forage production alleviates the demand for water resources and reduces the pressure on wastewater treatment plants. However, considering the controversial findings of previous studies on greywater quality (especially, long-term reuse), the reuse of treated greywater needs to be considered with caution and periodic quality analyses and economic assessments are required.

scholarly journals Conservation of the group Piperia (Orchidaceae) and associated plant communities

Lankesteriana ◽  
2015 ◽  
Vol 7 (1-2) ◽  
Author(s):  
Robert Lauri
Keyword(s):  
Plant Community ◽  
Plant Communities ◽  
Human Activity ◽  
Mediterranean Climate ◽  
The Past ◽  
The Mediterranean

The conservation and protection of California native orchids has not been a large focus recently. All California native orchids are terrestrial and many are associated with forest and woodland plant com- munities. However, a number are associated with the Mediterranean Climate plant community known as Chaparral; this includes at least three Piperia Rydb. species. Many Piperia populations and associated Chaparral plant communities have been impacted by human activity over the past several decades, howev- er, there is very little documentation regarding the size, and overall impact to the populations. 

scholarly journals Efecto de la inoculación de Azospirillum spp. sobre el contenido nutrimental de moringa (Moringa oleifera Lam.)

2020 ◽  
Vol 38 (1) ◽  
pp. 29
Author(s):  
Mario Alejandro Hernández-Chontal ◽  
Dinora Vazquez-Luna ◽  
Ariadna Linares-Gabriel ◽  
Gloria Esperanza De Dios-León ◽  
Armando Guerrero-Peña ◽  
...  
Keyword(s):  
Crude Protein ◽  
Moringa Oleifera ◽  
Calcium Content ◽  
Dry Weight ◽  
The Other ◽  
Nutritional Content ◽  
Inoculum Concentration ◽  
Nutrient Contents ◽  
Animal Consumption ◽  
Moringa Oleifera Lam

Moringa is used for human and animal consumption due to its high content of proteins, vitamins and minerals. The present study analyzed and evaluated the effectiveness of Azospirillum spp. over the nutritional content of moringa (Moringa oleifera Lam.) under nursery conditions. The experimental design consisted of four treatments with six repetitions in complete blocks at random, which consisted of the inoculation at 0.5, 1 and 1.5 mL of suspension with 9.8 × 105 CFU mL-1 of Azospirillum spp. The study variables: biomass, protein, macro (P, K. Ca and Mg) and micronutriments (Na, Fe, Cu and Mn) in leaves and stems were determined 70 days after sowing. The analysis of variance showed signif icant statistical differences between treatments only for the variables: potassium content in leaves and calcium content, iron and sodium in stem. According to the comparison of means (P ≤ 0.05) the best treatments were those that received 0.5 and 1 mL of suspension. The inoculation of Azospirillum, failed to increase the dry weight and protein contents; however, the highest values (30.2% crude protein) were associated with its application. The absence of significant effects in the other variables evaluated is associated with inoculum concentration, however, higher values are shown in the nutrient contents in relation to results reported in other research.

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