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Natalie R. Bumgarner, Whitney S. Miller and Matthew D. Kleinhenz

Crop production and research involve descriptions and predictions of plant growth and biomass accumulation and distribution. Both processes involve destructive and nondestructive sampling. Destructive sampling is most common and typically precedes

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Michael W. Smith and Bruce W. Wood

Allometric equations were developed for orchard-grown pecan [Carya illinoinensis (Wangenh.) C. Koch] trees. Trees, ranging in size from 22 to 33 cm in trunk diameter 1.4 m above the ground, were destructively harvested from two sites. The entire aboveground portion of each tree was harvested and then divided into leaves, current season's shoots, and branches ≥1 year old plus trunk. Roots were sampled by digging a trench beginning beneath the trunk and extending to one-half the distance to an adjacent tree, then separating the roots from the soil. Roots were then divided into those less than 1 cm in diameter and those ≥1 cm in diameter. Equations in the form Y = eaXb were developed to estimate dry biomass of most tree components and the whole tree, where Y is the dry weight, e is the base of the natural logarithm, X is the trunk diameter at 1.4 m above the ground, and a and b are coefficients. A linear equation provided the best fit for estimating the weight of the current season's growth. Power equations were also developed to estimate the weights of inner bark and wood for different size trunks or branches.

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Junhuo Cai, Junjun Fan, Xuying Wei and Lu Zhang

dynamics of biomass distribution, climate-associated phenology, and physiologic bulb characteristics. Our results give insights into the mechanisms underlying summer dormancy, and provide a framework for both future ecologic research on Lycoris and the

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Philipp von Bieberstein, Ya-ming Xu, A.A. Leslie Gunatilaka and Raphael Gruener

Intensified interest in plant secondary metabolites for anticancer and other disease treatments has led to recent exploration of medicinal plant growth conditions to optimize biomass production and metabolite synthesis ( Cragg et al., 2009

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Claudia Fassio, Ricardo Cautin, Alonso Pérez-Donoso, Claudia Bonomelli and Mónica Castro

goal of this research was to quantify the effects of this unique clonal propagation technique and grafting on avocado root architecture and biomass allocation. Material and methods Site and plant material. The study site was located at the experimental

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Darren H. Touchell, Thomas G. Ranney, Dilip R. Panthee, Ronald J. Gehl and Alexander Krings

dense clumps and attaining heights of up to 8–9 m ( Lewandowski et al., 2003 ). With such impressive growth rates, A. donax is a leading candidate for cultivated biomass in Mediterranean climates ( Angelini et al., 2009 ; Cosentino et al., 2006 ) and

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Ozlem Altuntas, H. Yildiz Dasgan and Yelderem Akhoundnejad

-treated, leaf-disc conductivity, respectively, and C 1 and C 2 are the same measurements for the controls ( Kocheva and Georgiev, 2003 ). Plant measurements. The three treated plants from each replicate were sampled to determine change in biomass. For a dry

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Laban K. Rutto, Myong-Sook Ansari and Michael Brandt

(1995) applied compound fertilizer (12.5N–8.5P–16K) at 75, 225, and 375 kg·ha −1 and found a positive correlation between high nutrient supply and biomass allocation to vegetative and reproductive organs. In another study, Pagliarulo et al. (2004

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Kui Lin, Zhi Huang and Yong Xu

formation ( Huan and Tanaka, 2004 ), and promotes biomass accumulation ( Heo et al., 2002 ). Blue light regulates phototropism, chloroplast migration, stomatal opening, leaf expansion, and photosynthetic protection ( Briggs and Christie, 2002 ; Gruszecki et

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Sara Arscott and Irwin Goldman

these plants. Lefsrud et al. (2006) found that when kale ( Brassica oleracea vars. acephala , viridis ) leaves averaged 1056 μg·g −1 Se dry weight, they had a 27% reduction in fresh plant biomass compared with plants grown with no Se. Barak and