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Newman, S. M.; Bennett, K.; Wu, Yongkang

doi:10.1023/a:1005938310106

Cited by 36 publications

(5 citation statements)

References 4 publications

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“…The reduction in dry matter yield of C 4 plants grown under shade is primarily due to their greatly reduced photosynthetic rate under low light (Blenkinsop and Dale 1974). Some of the reduction is simply associated with the effect of lowered light intensity on net photosynthesis, but alterations in the photosynthetic apparatus including a decline in electron transport chain constituents and carboxylation enzymes in comparison to plants grown in the sun are likely to be even more important (Boardman 1977). Newman et al (1998 reported that maize yields were reduced by 32% relative to sole crops when intercropped with Paulownia fortunei during the summer in China, whereas the yield of ginger was 34% greater than in sole crops.…”

Section: Discussionmentioning

confidence: 99%

“…With these potential benefits of tree-based intercropping systems in mind, to maximize the potential benefits of crop, competitive interactions such as availability of soil water, available light for crop photosynthesis, and available nutrients for crop growth need to be avoided by properly design and manage intercropping systems (Thevathasan et al 2004;Nair 1993). This paper examines different treecrop combinations, provides advices best for maximizing crop yields, and offers possible solutions where yields of agricultural crops are impaired in tree-based intercropping systems, as primarily influenced by tree shading.…”

Section: Introductionmentioning

confidence: 99%

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Photosynthesis, growth and yield of soybean and maize in a tree-based agroforestry intercropping system on the Loess Plateau

et al. 2009

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Agroforestry is the most effective way to restore the disturbed lands on the Loess Plateau and to develop the poor local economy. In order to maximize the potential benefits of tree-based intercropping systems, photosynthesis, growth and yield of soybean and corn were studied by measuring photosynthetic active radiation (PAR), plant water deficit and soil moisture in a 4-year-old plantation of walnut (Juglans regia L.) and plum (Prunus salicina) grown at a spacing of 5 m 9 3 m on the Loess Plateau. The effects of tree competition significantly reduced PAR, net assimilation (NA), growth and yield of individual soybean or corn plants growing nearer (1 m near tree row) to tree rows. NA was highly correlated with growth and yield of the both crops. These correlations were higher for corn than soybeans, with corn, rather than soybeans being more adversely impacted by tree shading. Plum, rather than walnut had the greatest competitive effect on PAR and NA. Daily plant water deficits were non-significantly and poorly correlated with NA and growth and yield of the both crops. However, soil moisture (20 cm depth) was significantly correlated with biomass and yield of both crops. Possible remediation strategies are discussed to reduce tree competitive interactions on agricultural crops.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photosynthesis, growth and yield of soybean and maize in a tree-based agroforestry intercropping system on the Loess Plateau

et al. 2009

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“…Corn growing at CT usually has greater yield and biomass production than corn grown in the understory, causing a 'parabolic effect' (Newman et al, 1997). However, this effect can be mitigated by adopting tree management practices to decrease light and water competition as thinning some tree rows or some trees in each row (Reynolds et al, 2007), or pruning the lower branches and lifting the tree canopy (Pezzopane et al, 2019), improving system productivity.…”

Section: Discussionmentioning

confidence: 99%

Agronomic and physiological responses of corn intercropped with palisadegrass growing in full sun or in a crop‐livestock‐forestry systems

Domiciano,

Pedreira,

Abreu

et al. 2023

Grass and Forage Science

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There is a need to enhance agricultural intensification and diversification by establishing alternative crop‐livestock‐forestry systems. Our objective was to compare the production and physiological characteristics of corn (Zea mays L.) either intercropped with Marandu palisadegrass [Brachiaria (syn. Urichloa) brizantha (Hochst. ex A. Rich.) R. D. Webster] growing in full sun (FS), or in a crop‐livestock‐forestry with single‐row (CLFs) and triple‐row (CLFt) groves of Eucalyptus urograndis (hybrid of Eucalyptus grandis W. Hill ex Maiden and Eucalyptus urophylla S. T. Blake). In the CLFs and CLFt, the trees were spaced at 37 m (90 tree ha−1) and 30 m (135 tree ha−1), respectively. The experiment was carried out for 2 years in a randomised complete block with three replications in a strip‐split‐plot arrangement with measurements at 5 sites between groves (7 and 13 m on the south face, central, and 7 and 13 m on the north face). The forage mass for full sun, CLFs, and CLFt was 10.9, 9.5, and 6.2 Mg DM ha−1 in 2017 and 28.9, 21.5, and 14.0 Mg DM ha−1 in 2018, while the grain yield was 3.38, 3.34, and 1.66 Mg DM ha−1 in 2017 and 7.90, 4.66, and 2.55 Mg DM ha−1 in 2018. The forage mass (10.1 Mg DM ha−1 in 2017 and 23.9 Mg DM ha−1 in 2018) and grain yield (3.3 Mg DM ha−1 in 2017 and 5.0 Mg DM ha−1 in 2018) in the central and 13 m north distances were greater than in the 7 m north and south, with less light transmission and red: far‐red ratio. We concluded that corn intercropped with palisadegrass in an integrated crop‐livestock‐forestry system was negatively affected by the reduction in radiation transmission, resulting in reduced corn height, forage mass, and grain yield than in the full sun.

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“…For wood production, Paulownia hybrid trees (Wu et al, 2014;Huseinovic et al, 2017) are mainly planted primarily at a distance of 4 m 2 × 4 m 2 (Zhao et al, 2019), with approximately 625 trees ha-1 (Icka et al, 2016b;Berdón Berdón et al, 2017). As reported by several studies (Newman et al, 1997;Popescu and Sabau, 2016;Zhao et al, 2019), the standard cycle duration for Paulownia trees' roundwood is 10 years. Based on this fact, the current study has selected 10 years as the ideal cycle duration for Paulownia trees.…”

Section: Investment Opportunities and Risks In Paulownia And Other Ca...mentioning

confidence: 99%

Paulownia trees as a sustainable solution for CO2 mitigation: assessing progress toward 2050 climate goals

Ghazzawy,

Bakr,

Mansour

et al. 2024

Front. Environ. Sci.

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Due to the progressive climate change on our planet, scientists are interested in solving this issue since it threatens not only certain regions or countries but also the world’s ecosystems and economies. Therefore, minimizing carbon dioxide (CO2) emissions and reducing atmospheric levels are global priorities. Thus, it is necessary at this moment to develop an appropriate approach to reduce or stabilize CO2 levels in the atmosphere. However, CO2 capture projects are long-term, low-profitable, and high-risk environmental projects. Consequently, it is necessary to find an appropriate and sustainable CO2 capture approach that is efficient in reducing atmospheric CO2 levels while having a safe impact on the environment. Although carbon (C) is the key basic component used to produce biological compounds by photosynthetic organisms in terrestrial plants, the C pathway is a key factor affecting the capture of CO2 by photosynthetic organisms. Among photosynthetic organisms, Paulownia, a multipurpose tree, is popular around the world for its timber and its potential role in CO2 sequestration. Paulownia spp. belongs to the Paulowniaceae family and comprises a group of trees. These trees are primarily found in southeastern Asia, particularly in China, and have been intentionally grown for more than two millennia due to their ornamental, cultural, and medicinal value. The number of Paulownia species varies depending on taxonomic classification, ranging from 6 to 17. Among them, Paulownia tomentosa, Paulownia elongata, Paulownia fortunei, and Paulownia catalpifolia are the most widely recognized and favored species. The present review provides a comprehensive technical-economic scenario for the capture of one million tons of CO2 by Paulownia trees (as a terrestrial plant model, grown on 2,400 ha−1). P. tomentosa can be utilized in agroforestry systems to mitigate greenhouse gas (GHG) emissions within urban cities and emphasize the carbon storage potential of agroforestry. In conclusion, Paulownia trees as an environmental mass project showed great encouragement to investors and governments to expand these types of projects to achieve global climate goals by 2050.

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Untitled

Cited by 36 publications

References 4 publications

Photosynthesis, growth and yield of soybean and maize in a tree-based agroforestry intercropping system on the Loess Plateau

Photosynthesis, growth and yield of soybean and maize in a tree-based agroforestry intercropping system on the Loess Plateau

Agronomic and physiological responses of corn intercropped with palisadegrass growing in full sun or in a crop‐livestock‐forestry systems

Paulownia trees as a sustainable solution for CO2 mitigation: assessing progress toward 2050 climate goals

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