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Bielinski M. Santos

Foliar nutrition is an important management strategy to improve performance of vegetable and fruit crops. This technology has been used for decades to enhance nutrient absorption and utilization in three critical conditions of crops, namely: 1

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Simona Proietti, Stefano Moscatello, Fiorella Villani, Federica Mecucci, Robert P. Walker, Franco Famiani, and Alberto Battistelli

with its industrial transformation is absent. Hence, because of the growing interest in sour cherry–based products, it is essential to increase our knowledge of the genetic characteristics and nutritional and industrial quality of Prunus cerasus L

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Charles Benbrook

quality nor the weight to place on various quality parameters. We know that the nutritional quality of food for humans rests on several attributes and constituents in that food in addition to the traditional nutritional components measured (proteins, fats

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Rolland Agaba, Phinehas Tukamuhabwa, Patrick Rubaihayo, Silver Tumwegamire, Andrew Ssenyonjo, Robert O.M. Mwanga, Jean Ndirigwe, and Wolfgang J. Grüneberg

magnitudes of variance components for yield and nutritional quality traits provide information for better understanding of germplasm properties. Similarly, genotypic and phenotypic variation coefficients (GCV and PCV, respectively) give a measure of the

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Salfina S. Mampa, Martin M. Maboko, Puffy Soundy, and Dharini Sivakumar

understanding of the plant’s response to leaf harvest and N application is important in developing improved cultivation practices for increased beetroot yield and nutritional quality. Therefore, the aim of this study was to determine the effect of N application

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Sara Serra, Rachel Leisso, Luca Giordani, Lee Kalcsits, and Stefano Musacchi

Washington State. Here, the main objective was to determine the impact of different crop loads on fruit quality, storability, nutritional balance, and return of bloom in ‘Honeycrisp’ in a desert environment. Our hypothesis was that lower crop loads would

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Gerry H. Neilsen, Denise Neilsen, Peter Toivonen, and Linda Herbert

(LTB) in ‘Cox's Orange’ ( Johnson and Yogoratnam, 1978 ) and LTB and firmness of ‘McIntosh’ apples ( Webster and Lidster, 1986 ), but it is not known whether soil P applications would result in similar improvements in fruit quality. Responsiveness to P

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Christina M. Twardowski, Jaime L. Crocker, John R. Freeborn, and Holly L. Scoggins

believe the most likely impact of nutrition on rooting would be while the stock plants were growing. Our objective was to determine if manipulation of N rates as applied to stock plants would enhance the quantity of cuttings and quality of rooting for

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Esmaeil Fallahi, W. Michael Colt, Bahar Fallahi, and Ik-Jo Chun

Tree fruit rootstocks are used to influence precocity, tree size, fruit quality, yield efficiency, mineral uptake, and to withstand adverse environmental conditions. In this paper, we will briefly discuss the history and literature of apple (Malus domestica) rootstocks and their effects on scion tree growth, yield, fruit quality, leaf mineral nutrition, and photosynthesis. Then, the results of our long-term study on the effects of rootstocks on tree growth, yield, fruit quality and leaf mineral nutrition, and one season of photosynthesis measurement in `BC-2 Fuji' will be presented and discussed. In this study, `Fuji' trees on `Malling 9 NAKBAT337' (M.9) rootstock had the smallest trunk cross-sectional area (TCA), highest yield efficiency, and were the most precocious followed by those on `East Malling-Long Ashton 26' (M.26 EMLA) and `East Malling-Long Ashton 7' (M.7 EMLA). Trees on M.7 EMLA often had larger fruit with less color than those on M.9 and M.26 EMLA. Trees on M.7 EMLA frequently had greater leaf K than those on other rootstocks. Trees on M.26 EMLA always had greater leaf Mg than those on other rootstocks. Leaves from the current terminal shoots (CTS) of trees on M.9 had higher net photosynthesis and transpiration than those on M.7 EMLA rootstock during 1998 growing season.

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Eric A. Curry

Warm daytime and cool nighttime temperatures during fruit maturation are conducive to anthocyanin synthesis and starch degradation in many apple cultivars. In parts of the world, high temperatures during fruit maturation result in sunburn of varying degrees of severity ranging from slight bleaching of the pigments in the epidermal layer to cracked and desiccated skin. This experiment assessed the effects of sunburn on fruit quality and mineral nutrition at harvest. In September 1990, about 2000 `Granny Smith' or `Delicious' apples were examined for sunburn and sorted into the following categories: none, light, bleached, bronzed, buckskin, and cracked. Twenty fruit were collected for each category. Each fruit was subdivided into exposed and shaded halves. Each half of each fruit was evaluated for firmness, soluble solids, and acidity. Tissue samples were analyzed for sugars, total nitrogen, and mineral content. Data suggest that excessive heat due to solar radiation creates a gradient of sugars and minerals within the fruit resulting in increased disorders in certain areas of the fruit.