Log in

Relevant bibliographies by topics / Trees – South Africa – Growth / Journal articles

To see the other types of publications on this topic, follow the link: Trees – South Africa – Growth.

Journal articles on the topic 'Trees – South Africa – Growth'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Trees – South Africa – Growth.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

De Lacy, P., and C. M. Shackleton. "The comparative growth rates of indigenous street and garden trees in Grahamstown, South Africa." South African Journal of Botany 92 (May 2014): 94–96. http://dx.doi.org/10.1016/j.sajb.2014.02.007.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Melesse, Sileshi F., and Temesgen Zewotir. "Variation in growth potential between hybrid clones of Eucalyptus trees in eastern South Africa." Journal of Forestry Research 28, no. 6 (2017): 1157–67. http://dx.doi.org/10.1007/s11676-017-0400-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Correia, C. "Capital budgeting practices in South Africa: A review." South African Journal of Business Management 43, no. 2 (2012): 11–29. http://dx.doi.org/10.4102/sajbm.v43i2.180.

Full text

Abstract:

This paper reviews the capital budgeting survey literature in South Africa over the period 1972 to 2008. The survey evidence indicates a significant growth in Discounted Cash Flow (DCF) methods and a fall in the use of other methods. In particular, there has been growth in the use of Net Present Value (NPV). Yet, the Internal Rate of Return (IRR) technique remains the primary method used in practice despite some serious drawbacks. Larger companies are more likely to use DCF methods. There has been a significant growth in the use of sensitivity analysis and scenario analysis. However, there is

APA, Harvard, Vancouver, ISO, and other styles

4

Albaugh, Janine M., Peter J. Dye, and John S. King. "Eucalyptusand Water Use in South Africa." International Journal of Forestry Research 2013 (2013): 1–11. http://dx.doi.org/10.1155/2013/852540.

Full text

Abstract:

TheEucalyptusgenus yields high rates of productivity and can be grown across a wide range of site types and climates for products such as pulp, fuelwood, or construction lumber. In addition, many eucalypts have the ability to coppice, making this genus an ideal candidate for use as a biofuel feedstock. However, the water use ofEucalyptusis a controversial issue, and the impacts of these fast-growing trees on water resources are well documented. Regardless, the demand for wood products and water continues to rise, providing a challenge to increase the productivity of forest plantations within w

APA, Harvard, Vancouver, ISO, and other styles

5

Midgley, J. J., and A. Seydack. "What determines biomass in indigenous forests? An analysis of the Knysna Forest, South Africa." Australian Journal of Botany 54, no. 8 (2006): 701. http://dx.doi.org/10.1071/bt05139.

Full text

Abstract:

We tested the widely held assumption that indigenous forests contain maximum biomass and growth rates for local resource supply. We analysed 10 years of diameter growth of trees >10 cm in diameter from 108 plots, each 0.04 ha, in the Knysna Forest, South Africa. No correlation was found between radiation index and standing mass or growth, suggesting low environmental constraints on variation in growth rates and biomass accumulation. Gross growth and mortality rates per plot were unrelated, whereas growth rates and stocking rate per plot were positively correlated. Net growth per plot was no

APA, Harvard, Vancouver, ISO, and other styles

6

Worbes, Martin, and Wolfgang Johannes Junk. "How Old are Tropical Trees? the Persistence of a Myth." IAWA Journal 20, no. 3 (1999): 255–60. http://dx.doi.org/10.1163/22941932-90000689.

Full text

Abstract:

The recent report of ancient trees in the Amazon region (Chambers et al. 1998) with a maximum radiocarbon dated age of about 1400 years for the long-living pioneer species Cariniana micrantha is discussed in the light of dendrochronological age determinations from Africa and South America together with the results of indirect age estimations from other sources. There is a tendency in the literature to considerably overestimate the maximum ages of tropical trees. Age determination by the direct counting of annual rings and making estimations for hollow trees by measuring growth rates and diamet

APA, Harvard, Vancouver, ISO, and other styles

7

Détienne, Pierre. "Appearance and Periodicity of Growth Rings in some Tropical Woods." IAWA Journal 10, no. 2 (1989): 123–32. http://dx.doi.org/10.1163/22941932-90000480.

Full text

Abstract:

Trees belonging to 30 tropical African and South American hardwood species were wounded annually. This made it possible, after the trees had been felled, to mark precisey the annual growth rings and determine their boundaries. These boundaries are always formed during the longest dry season and clearly express the rhythm of cambial activity. The appearance and nature of these growth rings vary according to genera rather than to types of climate.

APA, Harvard, Vancouver, ISO, and other styles

8

Roux, J., and M. P. A. Coetzee. "First Report of Pink Disease on Native Trees in South Africa and Phylogenetic Placement of Erythricium salmonicolor in the Homobasidiomycetes." Plant Disease 89, no. 11 (2005): 1158–63. http://dx.doi.org/10.1094/pd-89-1158.

Full text

Abstract:

Erythricium salmonicolor causes a canker and die-back disease, commonly known as pink disease, on many tree species. During an investigation of diseases of Podocarpus henkellii and P. latifolius in the Mpumalanga Province of South Africa, typical symptoms of pink disease were observed on the branches of these trees. Stem and branch cankers covered with cracked bark and abundant pink mycelial growth were common on the affected trees. In subsequent surveys, the disease was also found on native Dais cotonifolia in the same area, as well as on native Ekebergia capensis and Maesa lanceolata in the

APA, Harvard, Vancouver, ISO, and other styles

9

Bamford, M. K., B. Cairncross, and H. Lombard. "Silicified fossil woods from the Late Permian Middleton Formation, Beaufort Group, Eastern Cape Province, South Africa and their palaeoenvironmental significance." South African Journal of Geology 123, no. 4 (2020): 465–78. http://dx.doi.org/10.25131/sajg.123.0036.

Full text

Abstract:

Abstract Fossil wood is described from the Late Permian Middleton Formation, Adelaide Subgroup, Beaufort Group of the Karoo Supergroup in the Easter Cape Province, South Africa. The wood consists of in situ tree trunks up to 9 m long, partially enclosed in fine-grained sandstone surrounded by argillaceous mudstone and siltstone. The strata are poorly exposed due to the eroded and denuded land surface. All are lying horizontally and none are in upright growth positions. Comparisons of the study site lithologies with known surrounding Middleton Formation lithostratigraphy supports the interpreta

APA, Harvard, Vancouver, ISO, and other styles

10

Trouet, Valérie, Mukufute Mukelabai, Anouk Verheyden, and Hans Beeckman. "Cambial Growth Season of Brevi-Deciduous Brachystegia spiciformis Trees from South Central Africa Restricted to Less than Four Months." PLoS ONE 7, no. 10 (2012): e47364. http://dx.doi.org/10.1371/journal.pone.0047364.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

YESHITELA, T., P. J. ROBBERTSE, and J. FIVAS. "EFFECTS OF FRUIT THINNING ON ‘SENSATION’ MANGO (MANGIFERA INDICA) TREES WITH RESPECT TO FRUIT QUANTITY, QUALITY AND TREE PHENOLOGY." Experimental Agriculture 40, no. 4 (2004): 433–44. http://dx.doi.org/10.1017/s0014479704002091.

Full text

Abstract:

Different fruit thinning methods were tested on ‘Sensation’ mango trees over two seasons in a trial conducted in Northern Province, South Africa. The objective of the study was to select the best thinning intensity and method based on different parameters. Thinning was carried out in October prior to the occurrence of excessive natural fruit drop. When fruits were thinned to one and two fruits per panicle, fruit number, weight and yield per tree at harvest were all increased. When 50% of the panicles were thinned there was an increase in the fruit retention potential of the trees as well as in

APA, Harvard, Vancouver, ISO, and other styles

12

Sileshi, F. Melesse, and Zewotir Temesgen. "The effect of correlated climatic factors on the radial growth of eucalypt trees grown in coastal Zululand of South Africa." African Journal of Agricultural Research 8, no. 14 (2013): 1233–44. http://dx.doi.org/10.5897/ajar12.1671.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Whitehouse, Anna M., and Anthony J. Hall-Martin. "Elephants in Addo Elephant National Park, South Africa: reconstruction of the population's history." Oryx 34, no. 1 (2000): 46–55. http://dx.doi.org/10.1046/j.1365-3008.2000.00093.x.

Full text

Abstract:

AbstractThe history of the Addo elephant population in South Africa, from the creation of the Addo Elephant National Park (AENP) in 1931 to the present (every elephant currently living within the park is known), was reconstructed. Photographic records were used as a primary source of historical evidence, in conjunction with all documentation on the population. Elephants can be identified in photographs taken throughout their life by study of the facial wrinkle patterns and blood vessel patterns in their ears. These characteristics are unique for each elephant and do not change during the indiv

APA, Harvard, Vancouver, ISO, and other styles

14

Furley, Peter A., Robert M. Rees, Casey M. Ryan, and Gustavo Saiz. "Savanna burning and the assessment of long-term fire experiments with particular reference to Zimbabwe." Progress in Physical Geography: Earth and Environment 32, no. 6 (2008): 611–34. http://dx.doi.org/10.1177/0309133308101383.

Full text

Abstract:

Long-term fire experiments in savannnas are rare, given the difficulties and demands of operation. Controlled fire experiments date from colonial times in West Africa, although the largest and best-known is located in the Kruger National Park, South Africa. The achievements of these experiments are assessed from examples in Africa, South America and Australia. A less well-known experiment in Zimbabwe was sited at the Marondera Grassland Research Station and ran from 1953 to 1991. Some of the preliminary results on the impact of fire on vegetation are analysed and compared with further vegetati

APA, Harvard, Vancouver, ISO, and other styles

15

Swart, W. J. "First Report of Powdery Mildew of Cashew Caused by Oidium anacardii in South Africa." Plant Disease 88, no. 11 (2004): 1284. http://dx.doi.org/10.1094/pdis.2004.88.11.1284a.

Full text

Abstract:

The cashew plant (Anacardium occidentale L.) (family Anacardiaceae) is native to Brazil. It was introduced in East Africa by the Portuguese in the 16th century where it is now widely cultivated, especially in Tanzania, Kenya, and Mozambique. The processed kernels are the most important product derived from the plant, although in Brazil and India, juices, jam, and alcoholic and soft drinks are also made from the pear-shaped edible receptacle. The plant is currently being evaluated in South Africa for commercial production. During May 2002, at least 25% of 5-year-old cashew trees grown from seed

APA, Harvard, Vancouver, ISO, and other styles

16

Jones, Helen E., and John Dighton. "The use of nutrient bioassays to assess the response of Eucalyptusgrandis to fertilizer application. 2. A field experiment." Canadian Journal of Forest Research 23, no. 1 (1993): 7–13. http://dx.doi.org/10.1139/x93-002.

Full text

Abstract:

The nutrient status of a Eucalyptusgrandis Hill ex Maiden field fertilizer experiment in Natal, South Africa, was assessed at 6 and 18 months by a bioassay test in which the rate of influx of 15N, 32P, and 86Rb in roots excised from trees was measured. Fertilizer treatments consisted of all combinations of two levels of nitrogen (N), phosphorus (P), potassium (K), and trace elements, applied at planting and at either 3 or 6 months. There were also untreated control plots. At 6 months, bioassay influx rates of the three isotopes by the roots were all higher when a nutrient was applied at a lowe

APA, Harvard, Vancouver, ISO, and other styles

17

Stander, Ockert P. J., Graham H. Barry, and Paul J. R. Cronjé. "Fruit Load Limits Root Growth, Summer Vegetative Shoot Development, and Flowering in Alternate-bearing ‘Nadorcott’ Mandarin Trees." Journal of the American Society for Horticultural Science 143, no. 3 (2018): 213–25. http://dx.doi.org/10.21273/jashs04438-18.

Full text

Abstract:

The objectives of this study were to improve the understanding of the mechanism of alternate bearing and the role of carbohydrates in ‘Nadorcott’ mandarin (Citrus reticulata) trees. Selected phenological responses were measured in natural heavy- (“on”) and low-fruiting (“off”) ‘Nadorcott’ mandarin trees grown under commercial South African production conditions. The relationships with seasonal leaf and root carbohydrate concentrations were evaluated at the shoot-, branch- and tree level over two seasons. Fruit load [R2 = (−)0.80 and R2 = (−)0.73 in seasons 1 and 2, respectively; (P < 0.01)]

APA, Harvard, Vancouver, ISO, and other styles

18

Steenkamp, Emma T., Brenda D. Wingfield, Wijnand J. Swart, and Michael J. Wingfield. "Double-stranded RNA and associated virulence in South African isolates of Sphaeropsis sapinea." Canadian Journal of Botany 76, no. 8 (1998): 1412–17. http://dx.doi.org/10.1139/b98-113.

Full text

Abstract:

Sphaeropsis sapinea (Fr.) Dyko & Sutton is an opportunistic pathogen of various Pinus spp., causing severe shoot blight and dieback. Some isolates of S. sapinea display characteristics such as reduced virulence, reduced growth rate, lack of pigmentation, altered colony morphology, and suppressed conidiation. South African isolates of S. sapinea displaying a range of growth patterns, including reduced growth rate and atypical morphology, were screened for the presence of double-stranded RNA (dsRNA). They were also tested for relative virulence in pathogenicity tests. Double-stranded RNA was

APA, Harvard, Vancouver, ISO, and other styles

19

Naidoo, Lenny, and Mihalis Chasomeris. "Wood chip exports and the challenges faced by private pulpwood farmers in Southern KwaZulu-Natal." Journal of Economic and Financial Sciences 6, no. 1 (2013): 109–28. http://dx.doi.org/10.4102/jef.v6i1.279.

Full text

Abstract:

The South African forestry industry contributes to the economic growth of the country by the planting of trees and the processing of these trees for the export market. The purpose of this study is to examine the trends in wood chip exports from the Port of Durban and to examine the stability and growth of private pulpwood production in Southern KwaZulu-Natal. The methodology used in this study includes questionnaires distributed to timber farmers and semi-structured interviews with respondents in forestry. The findings show that wood chip exports from Durban have increased between 2006 and 201

APA, Harvard, Vancouver, ISO, and other styles

20

Nyoni, M., M. Mazzola, J. P. B. Wessels, and A. McLeod. "The Efficacy of Semiselective Chemicals and Chloropicrin/1,3-Dichloropropene–Containing Fumigants in Managing Apple Replant Disease in South Africa." Plant Disease 103, no. 6 (2019): 1363–73. http://dx.doi.org/10.1094/pdis-10-18-1844-re.

Full text

Abstract:

Apple replant disease (ARD) is a biological phenomenon that is encountered when old apple orchards are replanted, resulting in tree growth and yield reductions in young trees. Three ARD orchard trials were conducted, which showed that semiselective chemicals (fenamiphos, metalaxyl, imidacloprid, and phosphonates) used independently, two fumigant formulations (33.3% chloropicrin and 60.8% 1,3-dichloropropene [Pic33-1,3D] and 57.% chloropicrin and 38% 1,3 dichloropropene [Pic57-1,3D]), and semiselective chemicals combined with Pic33-1,3D or Pic57-1,3D all contributed to significant increases in

APA, Harvard, Vancouver, ISO, and other styles

21

Gaertner, Mirijam, Alana Den Breeyen, Cang Hui, and David M. Richardson. "Impacts of alien plant invasions on species richness in Mediterranean-type ecosystems: a meta-analysis." Progress in Physical Geography: Earth and Environment 33, no. 3 (2009): 319–38. http://dx.doi.org/10.1177/0309133309341607.

Full text

Abstract:

Besides a general consensus regarding the negative impact of invasive alien species in the literature, only recently has the decline of native species attributable to biological invasions begun to be quantified in many parts of the world. The cause-effect relationship between the establishment and proliferation of alien species and the extinction of native species is, however, seldom demonstrated. We conducted a meta-analysis of studies in Mediterranean-type ecosystems (MTEs) to examine: (1) whether invasion of alien plant species indeed causes a reduction in the number of native plant species

APA, Harvard, Vancouver, ISO, and other styles

22

CARR, M. K. V., and C. M. MENZEL. "THE WATER RELATIONS AND IRRIGATION REQUIREMENTS OF LYCHEE (LITCHI CHINENSIS SONN.): A REVIEW." Experimental Agriculture 50, no. 4 (2013): 481–97. http://dx.doi.org/10.1017/s0014479713000653.

Full text

Abstract:

SUMMARYThe results of research into the water relations and irrigation requirements of lychee are collated and reviewed. The stages of plant development are summarised, with an emphasis on factors influencing the flowering process. This is followed by reviews of plant water relations, water requirements, water productivity and, finally, irrigation systems. The lychee tree is native to the rainforests of southern China and northern Vietnam, and the main centres of production remain close to this area. In contrast, much of the research on the water relations of this crop has been conducted in So

APA, Harvard, Vancouver, ISO, and other styles

23

Yeshitela, T., P. J. Robbertse, and P. J. C. Stassen. "Effects of pruning on flowering, yield and fruit quality in mango (Mangifera indica)." Australian Journal of Experimental Agriculture 45, no. 10 (2005): 1325. http://dx.doi.org/10.1071/ea03185.

Full text

Abstract:

The effects of 7 pruning treatments were studied in 2 mango cultivars (‘Keitt’ and ‘Tommy Atkins’) in the Hoedspruit region of the Northern Province of South Africa. Trees that received panicle pruning (during full bloom) treatment at the point of attachment were observed to be induced for synchronised re-flowering, and also attained early fruit set and more fruit per panicle than the other panicle pruning treatments. Trees on which renewal pruning (early in the season when fruits were on the tree) as well as postharvest pruning treatments were applied, have been observed for development of ad

APA, Harvard, Vancouver, ISO, and other styles

24

Nyczepir, A. P., C. C. Reilly, B. W. Wood, and S. H. Thomas. "First Record of Meloidogyne partityla on Pecan in Georgia." Plant Disease 86, no. 4 (2002): 441. http://dx.doi.org/10.1094/pdis.2002.86.4.441a.

Full text

Abstract:

In July 2000, tree decline was observed in a commercial pecan (Carya illinoensis (Wang.) K. Koch) orchard in Crisp County, GA. Most affected trees exhibited dead branches in the upper canopy, stunted growth, and feeder roots with small galls and associated egg masses typical of root-knot nematode infection. All declining trees that were examined had root systems infected with a Meloidogyne sp. Efforts to culture the nematode on tomato (Lycopersicon esculentum Mill. ‘Rutgers’) were unsuccessful. Identification of the nematode was determined by two laboratory procedures in March 2001. Female nem

APA, Harvard, Vancouver, ISO, and other styles

25

Sanderlin, Randy S. "Susceptibility of Some Common Pecan Rootstocks to Infection by Xylella fastidiosa." HortScience 50, no. 8 (2015): 1183–86. http://dx.doi.org/10.21273/hortsci.50.8.1183.

Full text

Abstract:

Pecan [Carya illinoinensis (Wangenh.) K. Koch], a hardwood tree native to North America, is grown for commercial production of nuts in southeastern, central, and western regions of the United States. Pecan is also grown commercially in Mexico, South Africa, Australia, and some countries in South America. Pecan trees can be infected by the broad host range xylem-limited bacterial pathogen Xylella fastidiosa Wells et al. Infection incites a leaf scorch disease that can cause significant defoliation, reduced tree growth, and lower nut yield. Pecan cultivars are clonally propagated onto rootstocks

APA, Harvard, Vancouver, ISO, and other styles

26

CARR, M. K. V. "THE WATER RELATIONS AND IRRIGATION REQUIREMENTS OF AVOCADO (Persea americana Mill.): A REVIEW." Experimental Agriculture 49, no. 2 (2013): 256–78. http://dx.doi.org/10.1017/s0014479712001317.

Full text

Abstract:

SUMMARYThe results of research on the water relations and irrigation need of avocado are collated and reviewed in an attempt to link fundamental studies on crop physiology to irrigation practices. Background information is given on the centre of origin (Mexico and Central America) and the three distinct ecological areas where avocados are grown commercially: (1) Cool, semi-arid climates with winter-dominant rainfall (e.g. Southern California, Chile, Israel); (2) Humid, subtropical climates with summer-dominant rainfall (e.g. eastern Australia, Mexico, South Africa); and (3) Tropical or semi-tr

APA, Harvard, Vancouver, ISO, and other styles

27

Huysamer, Marius. "Increasing Tree Complexity and Bearing Potential in Young `Fuji' Apple Trees." HortScience 32, no. 3 (1997): 506E—507. http://dx.doi.org/10.21273/hortsci.32.3.506e.

Full text

Abstract:

Under typical South African growing conditions, `Fuji' apple (Malus domestica Borkh.) trees are characterized by strong apical dominance during the first few years after planting. This, together with the current lack of suitable precocious rootstocks and the tip-bearing habit, causes willowy “blind wood” growth with few flowering positions, and delays bearing until the third leaf when a crop of less than 10 tons/hectare can be realized. Promalin (GA4+7 and benzyladenine, Abbott Laboratories) was used in combination with apical meristem defoliation and Agral or Armoblen as surfactant/penetrant

APA, Harvard, Vancouver, ISO, and other styles

28

Pérez, S., S. Montes, and C. Mejía. "Analysis of Peach Germplasm in Mexico." Journal of the American Society for Horticultural Science 118, no. 4 (1993): 519–24. http://dx.doi.org/10.21273/jashs.118.4.519.

Full text

Abstract:

A wide range of peach [Prunus persica (I,.) Batsch] germplasm was collected from the most important peach growing regions in Mexico and some Latin American countries, as well as from breeding programs in the United States, Europe, and South Africa. Budded trees, seedlings derived from selfing cultivars and selections, and seed samples from various growing regions were propagated and planted in central Mexico. Twenty eight morphological or phenological variables were recorded on 52 accessions representing different geographic regions. The highest degree of variability was observed for traits re

APA, Harvard, Vancouver, ISO, and other styles

29

Hassan, Islam F., Maybelle S. Gaballah, Hanan M. El-Hoseiny, Mohamed E. El-Sharnouby, and Shamel M. Alam-Eldein. "Deficit Irrigation to Enhance Fruit Quality of the ‘African Rose’ Plum under the Egyptian Semi-Arid Conditions." Agronomy 11, no. 7 (2021): 1405. http://dx.doi.org/10.3390/agronomy11071405.

Full text

Abstract:

Evolved in South Africa and released to market in 2009, the ‘African Rose’ plum has been introduced and grown under the Egyptian semi-arid conditions since 2010. Within that time, this cultivar has faced significant fruit quality issues, mainly poor color and low total soluble solids (TSS). Several trials using foliarly applied growth regulators have been conducted, but with little conspicuous results on fruit yield and quality. There is very limited information about the relationship between irrigation regime and fruit quality for this cultivar. Therefore, a field experiment was conducted to

APA, Harvard, Vancouver, ISO, and other styles

30

Henderson, L. "Comparisons of invasive plants in southern Africa originating from southern temperate, northern temperate and tropical regions." Bothalia 36, no. 2 (2006): 201–22. http://dx.doi.org/10.4102/abc.v36i2.362.

Full text

Abstract:

A subset of invasive alien plant species in southern Africa was analysed in terms of their history of introduction, rate of spread, countries/region of origin, taxonomy, growth forms, cultivated uses, weed status and current distribution in southern Africa, and comparisons made of those originating from south of the tropic of Capricorn, north of the tropic of Cancer and from the tropics. The subset of 233 species, belonging to 58 families, includes all important declared species and some potentially important species. Almost as many species originate from temperate regions (112) as from the tr

APA, Harvard, Vancouver, ISO, and other styles

31

Carey, Victoria Anne, Eben Archer, Gérard Barbeau, and Dawid Saayman. "Viticultural terroirs in Stellenbosch, South Africa. II. The interaction of Cabernet-Sauvignon and Sauvignon Blanc with environment." OENO One 42, no. 4 (2008): 185. http://dx.doi.org/10.20870/oeno-one.2008.42.4.808.

Full text

Abstract:

<p style="text-align: justify;"><strong>Aims</strong>: A terroir can be defined as a grouping of homogenous environmental units, or natural terroir units, based on the typicality of the products obtained. Terroir studies therefore require an investigation into the response of grapevines to the natural environment.</p><p style="text-align: justify;"><strong>Methods and results</strong>: A network of plots of Sauvignon blanc and Cabernet Sauvignon were delimited in commercial vineyards in proximity to weather stations and their response monitored for a p

APA, Harvard, Vancouver, ISO, and other styles

32

Magadlela, Anathi, Aleysia Kleinert, Léanne L. Dreyer, and Alex J. Valentine. "Low-phosphorus conditions affect the nitrogen nutrition and associated carbon costs of two legume tree species from a Mediterranean-type ecosystem." Australian Journal of Botany 62, no. 1 (2014): 1. http://dx.doi.org/10.1071/bt13264.

Full text

Abstract:

The role of phosphorus nutrition in two-legume tree species from the Mediterranean-type ecosystem of the Cape Floristic Region (CFR) in South Africa was investigated. There is very little information about the functional adaptations of nitrogen (N) and phosphorus (P) nutrition in these legume trees growing in nutrient-poor soils. Nodulated Virgilia divaricata and V. oroboides tree saplings were grown in sterilised sand and supplied with Long Ashton nutrient solution, which was modified to contain either sufficient-phosphate (500 µM) or low-phosphate (5 µM) nutrient solution for 90 days. During

APA, Harvard, Vancouver, ISO, and other styles

33

Pujade-Renaud, Valérie, Marine Déon, Romina Gazis, et al. "Endophytes from Wild Rubber Trees as Antagonists of the Pathogen Corynespora cassiicola." Phytopathology® 109, no. 11 (2019): 1888–99. http://dx.doi.org/10.1094/phyto-03-19-0093-r.

Full text

Abstract:

The Corynespora leaf fall disease of rubber trees, caused by the necrotrophic fungus Corynespora cassiicola, is responsible for important yield losses in Asian and African plantations, whereas its impact is negligible in South America. The objective of this study was to identify potential antagonists of C. cassiicola among fungal endophytes (i.e., Pestalotiopsis, Colletotrichum, and Trichoderma spp.) isolated from wild and cultivated rubber trees distributed in the Peruvian Amazon. We first tested the endophytes in dual in vitro confrontation assays against a virulent C. cassiicola isolate (CC

APA, Harvard, Vancouver, ISO, and other styles

34

Weiersbye, I. M., E. T. F. Witkowski, and M. Reichardt. "Floristic composition of gold and uranium tailings dams, and adjacent polluted areas, on South Africa’s deep-level mines." Bothalia 36, no. 1 (2006): 101–27. http://dx.doi.org/10.4102/abc.v36i1.349.

Full text

Abstract:

Gold and uranium tailings (‘slimes’) dams and the adjacent polluted soils in the deep-level mining regions of South Africa (Carletonville, Klerksdorp and Welkom) were surveyed for the frequency of occurrence of naturally colonizing, actively introduced and persisting plant species. Fifty-six tailings dams with a combined area of 5864 ha. and a similar area o f tail- ings-polluted soils, were surveyed between July 1996 and March 1997. During the survey, 376 plant species and subspecies were recorded from the dams and adjacent polluted soils, with an additional 8 6 records obtained between 1998

APA, Harvard, Vancouver, ISO, and other styles

35

Uchida, J. Y., and L. L. Loope. "A Recurrent Epiphytotic of Guava Rust on Rose Apple, Syzygium jambos, in Hawaii." Plant Disease 93, no. 4 (2009): 429. http://dx.doi.org/10.1094/pdis-93-4-0429b.

Full text

Abstract:

A Neotropical rust of the Myrtaceae, Puccinia psidii Winter, was described from Psidium guajava L., or guava, in Brazil in 1884 (1). It was first discovered in Hawaii on potted Metrosideros polymorpha Gaud. on Oahu in April 2005 (2) with pathogenicity and identity established (3). It spread quickly, and by January 2006, severe outbreaks of this rust occurred statewide on new leaves of Syzygium jambos (L.) Alston, or rose apple. Rose apple, a native to South and Southeast Asia, was introduced to Hawaii in 1825 and is locally abundant to invasive from just above sea level to as high as 1,000 m i

APA, Harvard, Vancouver, ISO, and other styles

36

Goets, Stefan A., Tineke Kraaij, and Keith M. Little. "Seed bank and growth comparisons of native (Virgilia divaricata) and invasive alien (Acacia mearnsii and A. melanoxylon) plants: implications for conservation." PeerJ 6 (August 21, 2018): e5466. http://dx.doi.org/10.7717/peerj.5466.

Full text

Abstract:

Background Invasive alien plants with long-lived dormant seed banks and fast growth rates are difficult to manage. Acacia mearnsii and Acacia melanoxylon are two such invaders in the southern Cape of South Africa which occasionally co-occur with a native, ecologically analogous species, Virgilia divaricata. We compared the performance of these three species to determine potential for the native species to be used in management of the invasives. Methods We compared the study species in terms of (i) soil seed bank densities, their vertical distribution, and the viability of seeds underneath the

APA, Harvard, Vancouver, ISO, and other styles

37

Olmo, D., D. Gramaje, C. Agustí-Brisach, M. León, and J. Armengol. "First Report of Phaeoacremonium venezuelense Associated with Wood Decay of Apricot Trees in Spain." Plant Disease 98, no. 7 (2014): 1001. http://dx.doi.org/10.1094/pdis-12-13-1198-pdn.

Full text

Abstract:

In July 2011, a survey was conducted to evaluate the phytosanitary status of apricot trees (Prunus armeniaca L.) in an orchard in Binissalem (Mallorca Island, Spain). Fungal isolation was performed on a 40-year-old apricot trees (cv. Galta Vermella, double-grafted onto bitter almond and Japanese plum) showing a collapse of branches, chlorosis of leaves, and shoot dieback. These symptoms appeared in approximately 10% of the trees. Black spots and dark streaking of the xylem vessels were observed in cross- or longitudinal sections of the branches. Symptomatic branches were collected and wood sec

APA, Harvard, Vancouver, ISO, and other styles

38

Gonmadje, Christelle, Nicolas Picard, Sylvie Gourlet-Fleury, et al. "Altitudinal filtering of large-tree species explains above-ground biomass variation in an Atlantic Central African rain forest." Journal of Tropical Ecology 33, no. 2 (2017): 143–54. http://dx.doi.org/10.1017/s0266467416000602.

Full text

Abstract:

Abstract:Patterns in above-ground biomass of tropical forests over short altitudinal gradients are poorly known. The aim of this study was to investigate the variation of above-ground biomass with altitude in old-growth forests and determine the importance of changes in floristic composition as a cause of this variation. We used a dataset from 15 1-ha permanent plots established from lowland (200 m asl) to submontane forests (900 m asl) in the Ngovayang Massif, south-western Cameroon. We analysed variation over altitude in two specific functional traits, the potential maximum tree height and t

APA, Harvard, Vancouver, ISO, and other styles

39

Martoni, Francesco, and Mark J. Blacket. "Description of an Australian endemic species of Trioza (Hemiptera: Triozidae) pest of the endemic tea tree, Melaleuca alternifolia (Myrtaceae)." PLOS ONE 16, no. 9 (2021): e0257031. http://dx.doi.org/10.1371/journal.pone.0257031.

Full text

Abstract:

Psyllids, also known as jumping plant lice, are phloem feeding Hemiptera that often show a strict species-specific relationship with their host plants. When psyllid-plant associations involve economically important crops, this may lead to the recognition of a psyllid species as an agricultural or horticultural pest. The Australian endemic tea tree, Melaleuca alternifolia (Maiden & Betche) Cheel., has been used for more than a century to extract essential oils and, long before that, as a traditional medicine by Indigenous Australian people. Recently, a triozid species has been found to dama

APA, Harvard, Vancouver, ISO, and other styles

40

Christensen, Søren Brøgger. "Natural Products That Changed Society." Biomedicines 9, no. 5 (2021): 472. http://dx.doi.org/10.3390/biomedicines9050472.

Full text

Abstract:

Until the end of the 19th century all drugs were natural products or minerals. During the 19th century chemists succeeded in isolating pure natural products such as quinine, morphine, codeine and other compounds with beneficial effects. Pure compounds enabled accurate dosing to achieve serum levels within the pharmacological window and reproducible clinical effects. During the 20th and the 21st century synthetic compounds became the major source of drugs. In spite of the impressive results achieved within the art of synthetic chemistry, natural products or modified natural products still const

APA, Harvard, Vancouver, ISO, and other styles

41

Fedderke, Johannes, and Charles Simkins. "Economic Growth in South Africa." Economic History of Developing Regions 27, no. 1 (2012): 176–208. http://dx.doi.org/10.1080/20780389.2012.682408.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Freeman, S., G. Otero-Colina, G. Rodríguez-Alvarado, et al. "First Report of Mango Malformation Disease Caused by Fusarium pseudocircinatum in Mexico." Plant Disease 98, no. 11 (2014): 1583. http://dx.doi.org/10.1094/pdis-04-14-0375-pdn.

Full text

Abstract:

Mango (Mangifera indica L.) malformation disease (MMD) is one of the most important diseases affecting this crop worldwide, causing severe economic loss due to reduction of yield. After the first report in India in 1891 (3), MMD has spread worldwide to most mango-growing regions. Several species of Fusarium cause the disease, including F. mangiferae in India, Israel, the USA (Florida), Egypt, South Africa, Oman, and elsewhere; F. sterilihyphosum in South Africa and Brazil; F. proliferatum in China; F. mexicanum in Mexico; and recently, F. tupiense in Brazil (1,2,3,4). Besides F. mexicanum, F.

APA, Harvard, Vancouver, ISO, and other styles

43

Serrato-Diaz, L. M., L. I. Rivera-Vargas, and R. D. French-Monar. "First Report of Neofusicoccum mangiferae Causing Rachis Necrosis and Inflorescence Blight of Mango (Mangifera indica) in Puerto Rico." Plant Disease 98, no. 4 (2014): 570. http://dx.doi.org/10.1094/pdis-08-13-0878-pdn.

Full text

Abstract:

Inflorescence blight is a major disease in mango production (2,3). During a disease survey of mango in Puerto Rico conducted from February to April in 2009, 20% of the inflorescences were affected with inflorescence blight showing rachis and flower necrosis. Symptoms were observed in 70% of samples at the Mango Germplasm Collection of the University of Puerto Rico's Experiment Station in Juana Diaz. Blighted inflorescence tissue (necrotic and the interface between necrotic and healthy tissue) from mango cultivars ‘Haden’ and ‘Irwin’ were disinfested with 70% ethanol, rinsed with sterile water

APA, Harvard, Vancouver, ISO, and other styles

44

Glen, H. F., and R. Boon. "Identifying trees on the East Coast of South Africa." South African Journal of Botany 75, no. 2 (2009): 402. http://dx.doi.org/10.1016/j.sajb.2009.02.053.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

rattsø, jørn, and hildegunn e. stokke. "A GROWTH MODEL FOR SOUTH AFRICA." South African Journal of Economics 75, no. 4 (2007): 616–30. http://dx.doi.org/10.1111/j.1813-6982.2007.00140.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Hodge, D. "Inflation and growth in South Africa." Cambridge Journal of Economics 30, no. 2 (2005): 163–80. http://dx.doi.org/10.1093/cje/bei051.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Falkenhagen, E. R. "Growth modelling ofPinus roxburghiiin South Africa." Southern African Forestry Journal 178, no. 1 (1997): 31–38. http://dx.doi.org/10.1080/10295925.1997.9631136.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Williams, Miesha J. "Discounted Agricultural Growth in South Africa." Review of Black Political Economy 44, no. 3-4 (2017): 353–62. http://dx.doi.org/10.1007/s12114-017-9262-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Spies, C. F. J., L. Mostert, A. Carlucci, et al. "Dieback and decline pathogens of olive trees in South Africa." Persoonia - Molecular Phylogeny and Evolution of Fungi 45, no. 1 (2020): 196–220. http://dx.doi.org/10.3767/persoonia.2020.45.08.

Full text

Abstract:

Trunk disease fungal pathogens reduce olive production globally by causing cankers, dieback, and other decline-related symptoms on olive trees. Very few fungi have been reported in association with olive dieback and decline in South Africa. Many of the fungal species reported from symptomatic olive trees in other countries have broad host ranges and are known to occur on other woody host plants in the Western Cape province, the main olive production region of South Africa. This survey investigated the diversity of fungi and symptoms associated with olive dieback and decline in South Africa. Is

APA, Harvard, Vancouver, ISO, and other styles

50

Gryzenhout, M., F. Jami, B. Slippers, B. D. Wingfield, and M. J. Wingfield. "Botryosphaeriaceae as endophytes and pathogens of trees in South Africa." South African Journal of Botany 75, no. 2 (2009): 403. http://dx.doi.org/10.1016/j.sajb.2009.02.057.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!