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Camille E. Esmel, Bielinski M. Santos, Eric H. Simonne, Jack E. Rechcigl, and Joseph W. Noling

concentrations in irrigation water vary widely and current fertilizer practices use high-analysis fertilizer that often lacks S, the objectives of this study were to 1) investigate the effect of S fertilization rates on tomato growth and yield and 2) assess

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Craig E. Kallsen and Dan E. Parfitt

Similar scion and rootstock growth rates produce strong graft unions in fruit and nut trees. A SRR close to one provides a strong graft union as well as a uniform exterior surface for trunk-shaking harvesters. ‘Kerman’, which has been the standard

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Yuki Sago

concentrations in the leaves ( Barta and Tibbitts, 1991 ; Struckmeyer and Tibbitts, 1965 ). Many researchers have reported that tipburn is associated with rapid growth rate and high calcium demand in leaves ( Collier and Tibbitts, 1982 ; Gaudreau et al., 1994

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Mary Jane Clark and Youbin Zheng

recommendations to manage the growth and quality of different nursery crops in a range of environments. Currently, it is standard practice to use generalized CRF application rates (i.e., not species-specific) at nurseries. However, under-fertilization can restrict

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Mary Jane Clark and Youbin Zheng

knowledge, no research has considered both the optimum CRF rate for green roof module production in combination with nutrient loss through leaching in an outdoor trial. Determining an optimum CRF rate for sedum growth in green roof modules while minimizing

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Juan Carlos Díaz-Pérez, Jesús Bautista, Anthony Bateman, Guna Gunawati, and Cliff Riner

shoot dry matter sufficient for adequate growth is 1 g·kg −1 . The objective of this study was to evaluate the effects of K and S rates on sweet onion plant growth and bulb yield and quality. Materials and Methods Land preparation and planting

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Theodore M. DeJong

The growth and development patterns of fruit have been studied for many years and it has become traditional to think of peaches as having a double sigmoid pattern with three main stages fruit growth. This concept is primarily based on analyses of fruit absolute growth rates An alternative approach is to express growth on a relative growth rate (RGR) basis which is simply the weight increase perg of fruit weight per day. This analysis applied to dry-weight peach fruit growth results in a two-phase curve that is known mathematically as a Gompertz function. During the first growth phase the RGR decreases logarithmically and during the second phase the RGR remains relatively stable. Expressing fruit growth on a RGR basis is advantageous for fruit growth carbon budget modelling because RGR is directly related to respiration rates and for physiological studies because most analyses for physiologically active substances are expressed on a weight basis. There is obviously not only one “right” way to express fruit growth but it may be instructive to use the RGR approach particularly when studying factors that may be associated with “sink” activity.

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Juan Carlos Díaz-Pérez, Jesús Bautista, Gunawati Gunawan, Anthony Bateman, and Cliff Martin Riner

onion study, top weight was lower with organic fertilizers compared with chemical fertilizers ( Lee, 2010 ). The objective of this study was to evaluate the effects of organic fertilization rates on sweet onion plant growth and mineral nutrients

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Carolyn F. Scagel, Guihong Bi, Leslie H. Fuchigami, and Richard P. Regan

assessed using ANOVA in a full factorial design with cultivar, N05 rate, and W05 treatment as main effects. The influence of irrigation frequency on relationships between N05 rate and N uptake (N uptake efficiency) and N uptake and growth (N use efficiency

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J.G. Williamson and E.P. Miller

. Currently, there are no research-based fertilizer recommendations for blueberries grown in pine bark culture. This study was conducted to determine the effects of three rates of dry and liquid fertilizer on growth and yield of two SHB cultivars grown in pine