Developing a canopy closure model to predict overstorey/understorey relationships in Pinus radiata silvopastoral systems

1999 ◽  
pp. 109-119 ◽  
Author(s):  
R. L. Knowles ◽  
G. C. Horvath ◽  
M. A. Carter ◽  
M. F. Hawke
Keyword(s):  
Pinus Radiata ◽  
Canopy Closure ◽  
Silvopastoral Systems ◽  
Closure Model

Use of sewage sludge in silvopastoral systems under Pinus radiata D. Don: soil, tree growth, and pasture production

2018 ◽  
Author(s):  
Antonio Rigueiro-Rodríguez ◽  
María Rosa Mosquera-Losada ◽  
Nuria Ferreiro-Domínguez
Keyword(s):  
Sewage Sludge ◽  
Tree Growth ◽  
Pinus Radiata ◽  
Silvopastoral Systems ◽  
Pasture Production

scholarly journals Quantification of Daily Water Requirements of Container-Grown Calathea and Stromanthe Produced in a Shaded Greenhouse

Water ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 1194 ◽  
Author(s):  
Richard Beeson ◽  
Jianjun Chen
Keyword(s):  
Water Use ◽  
Correlation Coefficients ◽  
Growth Period ◽  
Canopy Closure ◽  
Closure Model ◽  
Water Requirements ◽  
Daily Water ◽  
Use Efficiency ◽  
Production Period ◽  
Best Fit

Irrigating plants based on their water requirements enhances water use efficiency and conservation; however, current irrigation practices for container-grown greenhouse plants largely relies on growers’ experiences, resulting in leaching and/or runoff of a large amount of water. To address water requirements of greenhouse-grown plants, this study adapted a canopy closure model and investigated actual evapotranspiration (ETA) of Calathea G. Mey. ‘Silhouette’ and Stromanthe sanguinea Sond. from transplanting to marketable sizes in a shaded greenhouse. The daily ETA per Calathea plant ranged from 3.55 mL to 59.39 mL with a mean cumulative ETA of 4.84 L during a 224 day growth period. The daily ETA of S. sanguinea varied from 7.87 mL to 97.27 mL per plant with a mean cumulative ETA of 6.81 L over a 231 day production period. The best fit models for predicting daily ETA of Calathea and Stromanthe were developed, which had correlation coefficients (r2) of 0.82 and 0.73, respectively. The success in modelling ETA of the two species suggested that the canopy closure model was suitable for quantifying water use of container-grown greenhouse plants. Applying the research-based ETA information in production could reduce water use and improve irrigation efficiency during Calathea and Stromanthe production.

scholarly journals Fertilization in pastoral and Pinus radiata D. Don silvopastoral systems developed in forest and agronomic soils of Northwest Spain

2010 ◽  
Vol 139 (4) ◽  
pp. 618-628 ◽  
Author(s):  
M. Rosa Mosquera-Losada ◽  
Nuria Ferreiro-Domínguez ◽  
Antonio Rigueiro-Rodríguez
Keyword(s):  
Pinus Radiata ◽  
Silvopastoral Systems

scholarly journals Daily Evapotranspiration of Guzmania ‘Irene’ and Vriesea ‘Carly’ Bromeliads Produced in a Shaded Greenhouse

HortScience ◽  
2018 ◽  
Vol 53 (12) ◽  
pp. 1814-1819 ◽  
Author(s):  
Richard C. Beeson ◽  
Jianjun Chen
Keyword(s):  
Ornamental Plants ◽  
Correlation Coefficients ◽  
Life Cycles ◽  
Canopy Closure ◽  
Closure Model ◽  
Foliage Plants ◽  
Ornamental Foliage Plants ◽  
Daily Evapotranspiration ◽  
The Mean ◽  
Production Period

Bromeliads are important ornamental foliage plants, but until now, their daily water use during production was unknown. Using a canopy closure model developed for container-grown woody ornamental plants, in this study we investigated actual evapotranspiration (ETA) of Guzmania ‘Irene’ and Vriesea ‘Carly’ from tissue-cultured liners grown in 15-cm containers to marketable sizes in a shaded greenhouse. The mean daily ETA of Guzmania ‘Irene’ ranged from 4.02 to 66.35 mL per plant, and the mean cumulative ETA was 16.66 L over a 95-week production period. The mean daily ETA of Vriesea ‘Carly’ varied from 3.98 to 59.89 mL per plant, and the mean cumulative ETA was 15.52 L over the same production period as the Guzmania cultivar. The best-fit models for predicting daily ETA of the two bromeliads were developed, which had correlation coefficients (r2) of 0.79 for Guzmania ‘Irene’ and 0.68 for Vriesea ‘Carly’. The success in the model of ETA for both bromeliads suggested that the canopy closure model was equally applicable to container-grown ornamental foliage plants produced in greenhouse conditions. The daily ETA and cumulative ETA values represent research-based information on water requirements, and, when applied, could improve irrigation practices in bromeliad production. This study also showed that roots per se of the two epiphytic bromeliads were able to absorb water and nutrients from a peat-based container substrate and support their complete life cycles.

scholarly journals Optimal management of Pinus radiata silvopastoral systems established on abandoned agricultural land in Galicia (north-western Spain)

Silva Fennica ◽  
2009 ◽  
Vol 43 (5) ◽  
Author(s):  
María Pasalodos-Tato ◽  
Timo Pukkala ◽  
Antonio Rigueiro-Rodríguez ◽  
Esther Fernández-Nunez ◽  
María Mosquera-Losada
Keyword(s):  
Pinus Radiata ◽  
Agricultural Land ◽  
Silvopastoral Systems ◽  
Optimal Management ◽  
Western Spain ◽  
North Western

Pinus radiata and sheep production in silvopastoral systems at Carngham, Victoria, Australia

2009 ◽  
Vol 78 (3) ◽  
pp. 203-216 ◽  
Author(s):  
P. R. Bird ◽  
J. D. Kellas ◽  
T. T. Jackson ◽  
G. A. Kearney
Keyword(s):  
Pinus Radiata ◽  
Silvopastoral Systems ◽  
Sheep Production

Agroforestry in Eastern Otago: results from two long-term experiments

2000 ◽  
pp. 93-98
Author(s):  
G.G. Cossens ◽  
M.F. Hawke
Keyword(s):  
Soil Ph ◽  
Tree Growth ◽  
Pinus Radiata ◽  
Carrying Capacity ◽  
Livestock Grazing ◽  
Tree Age ◽  
Rapid Decline ◽  
Pasture Production ◽  
Clover Content ◽  
Pasture Yield

During the first 20 years of a Pinus radiata tree rotation, tree growth and pasture yield were assessed under a range of tree spacings at Invermay and Akatore, two coastal sites in Eastern Otago. Pasture yield in association with trees thinned to 100 stems per hectare (sph) was comparable to that from open pasture up to a tree age of 12 years. By the 19th year, however, pasture production declined to 63% of open pasture yield at Invermay and to 42% at Akatore. At 200 and 400 sph at Akatore, pasture yield was similar to that from open pasture at tree age 12 years but declined to 27% and 0% of open pasture yield respectively by year 20. At both Invermay and Akatore, the ryegrass and clover content of open pasture was relatively constant throughout the term of the trial. However, both the ryegrass and clover content of pasture beneath trees began to decline by tree age 12 years with a very rapid decline at Akatore in the number of pasture species at 200 sph by the 19th year. No pasture remained at 400 sph, after 19 years. Livestock carrying capacity with sheep on tree treatments at Invermay decreased from 100% of open pasture at year 6 to 60% by year 10. At Akatore, livestock carrying capacity averaged over the 20-year life of the trial was 4.1 stock units per hectare with a maximum of 8.1 stock units at a tree age of 8 years. Tree growth at both sites was similar, averaging between 1 and 1.1 m/year in height over 20 years, with trees at Invermay at 100 sph averaging 9% greater height and diameter growth than at Akatore. Increasing tree stocking from 100 to 200 to 400 sph at Akatore, resulted in increased tree height, but decreased diameter at breast height. A comparison of the East Otago trees with those in a similar trial at Tikitere (Rotorua) 900 km further north indicated that the southern trees were about 6 years later in their growth pattern by tree age 20 years. On both sites, soil pH tended to be lower in the presence of trees and was significantly lower than in open pasture by year 20. The results and comparisons with the Tikitere data suggest that, in an integrated agroforestry regime, there will be livestock grazing under the trees further into the tree rotation in Otago than in North Island sites. However, slower tree growth would result in a longer rotation time to harvest. Current recommendations to farmers are to plant trees on the less productive areas of the farm and adopt a tree stocking rate which fully utilises the site. Keywords: agroforestry, livestock, pasture, Pinus radiata, soil pH, tree stocking

scholarly journals Welfare of cattle kept in intensive silvopastoral systems: A case report

2017 ◽  
Vol 46 (6) ◽  
pp. 478-488 ◽  
Author(s):  
Ariel Marcel Tarazona Morales ◽  
Maria Camila Ceballos ◽  
Guillermo Correa Londoño ◽  
César Augusto Cuartas Cardona ◽  
Juan Fernando Naranjo Ramírez ◽  
...  
Keyword(s):  
Case Report ◽  
Silvopastoral Systems

Changes in cell wall components and hygroscopic properties of Pinus radiata caused by heat treatment

2021 ◽  
Author(s):  
Alberto García-Iruela ◽  
Luis García Esteban ◽  
Francisco García Fernández ◽  
Paloma de Palacios ◽  
Alejandro B. Rodriguez-Navarro ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Cell Wall ◽  
Pinus Radiata ◽  
Cell Wall Components ◽  
Hygroscopic Properties ◽  
Wall Components
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