Effect of plant density and nitrogen rates upon the leaf area of seed sugar beet on seed yield and quality

Pospı́šil, M.; Pospišil, Ana; Rastija, Mirta

doi:10.1016/s1161-0301(99)00045-3

Cited by 14 publications

(10 citation statements)

References 6 publications

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“…[12] Plant density can influence leaf area development, thereby modifying LAI [Cutini, 1996;Kumar et al, 1999;Pospisil et al, 2000]. For surveyed studies containing plant density as an experimental treatment, data from the least dense treatment was chosen for our study.…”

Section: Data Selectionmentioning

confidence: 99%

Environmental control of leaf area production: Implications for vegetation and land‐surface modeling

Cowling

Field

2003

Global Biogeochemical Cycles

134

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[1] Leaf surface area per unit ground cover (leaf area index, LAI) is one of the major controls on plant productivity and biospheric feedbacks on atmospheric energy and water exchanges. Nearly all vegetation and land-surface models include parameterizations of LAI, however not much research currently focuses on the validation of simulated responses of LAI to environmental change. The objective of our research was to quantitatively review the plant science literature to extract information on the response of LAI to variations in soil moisture, soil fertility and atmospheric CO 2 . Our synthesis confirms that LAI is likely co-limited by a number of resources, including water, nitrogen and light. Atmospheric CO 2 influences LAI in much the same manner as other plant resources. When CO 2 supply is strongly limiting to gross primary production (i.e., at relatively low CO 2 concentrations), LAI is strongly correlated with CO 2 , whereas when CO 2 is abundant, LAI sensitivity to CO 2 dramatically decreases. Such a nonlinear relationship between leaf area production and atmospheric CO 2 may introduce a potential bias for global change modeling, particularly in the simulation of low-density vegetation that has the potential to significantly increase canopy size without inducing selfshading.

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Section: Data Selectionmentioning

confidence: 99%

Environmental control of leaf area production: Implications for vegetation and land‐surface modeling

Cowling

Field

2003

Global Biogeochemical Cycles

134

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“…There are many factors that can affect seed yield and seed quality, such as genotype, agronomic techniques and the environment (Bornscheuer et al 1993;Apostolides & Goulas 1998). Seed quality is reflected in seedling density, seedling vigour and the competitiveness and uniformity of crop growth (Apostolides & Goulas 1998;Pospisil et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Boron application affects seed yield and seed quality of sugar beets

2007

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SU MMARYSugar beet (Beta vulgaris L.) is one of the most important sugar crops worldwide. Despite the fact that sugar beet crop has high requirements for boron (B), the effect of B applications on seed yield and on seed quality is not known. A 2-year field study was conducted to determine whether soil and foliar B applications during anthesis increase seed set, final seed yield and improve seed quality of sugar beets. Boron solutions were applied at four rates (0, 245, 490 and 735 mg/l of B) as foliar applications and at two rates (1 . 5 and 3 kg/ha of B) as soil applications to field plots exhibiting no vegetative symptoms of B deficiency. Foliar B application increased the concentration of B in vegetative and reproductive tissues much more than soil application. In addition, foliar B application increased the seed yield by an average of 10 % in the first year and by an average of 44 % in the second year. The mean seed weight was affected by B application as it was increased in both years. The proportion of larger seeds (>5 . 00 and 4 . 5-5 . 00 mm) increased with increasing application of B. Moreover, seed quality was affected and the proportion of abnormal seedlings was decreased with B application. However, seed vigour was not affected by B application. These data indicate that foliar B application can improve seed yield and seed quality of sugar beet grown for seed production. However, the physiological basis of this effect remains unknown.

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“…While the rate of respiration continue to increase more or less up to the point that a plant dies (Turral et al, 2011). Therefore, temperature effect is related to the influence of physiological changes (Pospišil et al, 2000). Related study of carbon dioxide flux model prediction and growth measurements suggest that increasing temperatures may result in substantial decrease in carbon sequestration and inputs to stored carbon in the underlying papyrus peat deposits (Humphries and Long, 1995).…”

Section: Discussionmentioning

confidence: 99%

Response of Cyperus papyrus productivity to changes in relative humidity, temperature and photosynthetically active radiation

Opio¹,

Jones²,

Kansiime³

et al. 2017

Afr. J. Plant Sci.

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Ecosystem development is related to climatic conditions. To assess the effect of seasonal changes in climate factors on papyrus ecosystem development, community biomass was estimated nondestructively and climate factors recorded in the wetland. Absolute aerial biomass and productivity were not significantly different between wet and dry seasons. Although there was significant vapour pressure deficit change over the seasons, the impact on net primary productivity was not significant, but exhibited positive association during dry season. Primary productivity was positively related to photosynthetically active radiation during both dry and wet seasons. Except for the dry season that accounted for 26.1% of primary productivity, that of the wet season was independent (0%) of measured weather variables.

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Effect of plant density and nitrogen rates upon the leaf area of seed sugar beet on seed yield and quality

Cited by 14 publications

References 6 publications

Environmental control of leaf area production: Implications for vegetation and land‐surface modeling

Environmental control of leaf area production: Implications for vegetation and land‐surface modeling

Boron application affects seed yield and seed quality of sugar beets

Response of Cyperus papyrus productivity to changes in relative humidity, temperature and photosynthetically active radiation

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