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Yang Chen, Xianzhi Zhou, Yongsheng Lin, and Yucan Zhang

selection of individual plants to breed a new high-quality, early maturing, high-yield variety of C . maxima ‘Jianbao’, via a selfing method. Origin Since 1998, 25 types of pumpkin germplasm resources (F1 hybrids) have been introduced from Japan, India

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Georgios Syrgiannidis, Thomas Sotiropoulos, Nikolaos Koutinas, and Dimitrios Almaliotis

‘Syrgiannidis’ is an early-maturing pear cultivar originating from a cross between the cultivars Santa Maria and Kontoula (Greek local cultivar). Fruits are pyriform in shape with maximum diameter of ≈48 mm, mean fruit length 54 mm, and mean fruit

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Oussama H. Mounzer, Wenceslao Conejero, Emilio Nicolás, Isabel Abrisqueta, Yelitza V. García-Orellana, Luis M. Tapia, Juan Vera, Jose M. Abrisqueta, and Maria del Carmen Ruiz-Sánchez

, including pomegranate ( Melgarejo et al., 1997 ) loquat ( Martínez-Calvo et al., 1999 ), quince ( Martínez-Valero et al., 2001 ), apricot ( Pérez-Pastor et al., 2004 ), guava ( Salazar et al., 2006 ), and olive ( Cesaraccio et al., 2006 ). Very early-maturing

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Mildred N. Makani, Steven A. Sargent, Lincoln Zotarelli, Donald J. Huber, and Charles A. Sims

efficiency by precisely applying water and nutrients to the plant root zone. Reyes-Cabrera et al. (2014) also reported significant decreases in tuber physiological disorders for early-maturing potatoes grown using fertigation. A companion study of early-maturing

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Lurline Marsh

The floral abscission patterns of five early maturing pigeonpea genotypes; ICPL 146 1985HK, ICPL 87 Isotation (85K), ICPL 85010, ICPL 85024 and ICPL 8304 were studied on field grown plants in Missouri. Individual plants were bagged with nylon nets at the beginning of flowering, and the buds, flowers and pods were collected weekly and counted. Abscission began after anthesis and was excessive throughout most of the flowering period. The number of open flowers which abscised was much greater than that of buds or immature pods. The maximum number of weekly abscission of flowers per plant was 470 for ICPL 146 1985HK. Low night temperature below 10°C enhanced abscission of buds, flowers and immature pods in pigeonpea.

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R. Scott Johnson, Rich Rosecrance, Steve Weinbaum, Harry Andris, and Jinzheng Wang

The suspected contributory role of soil fertilization to nitrate pollution of groundwater has encouraged exploration of novel fertilizer management strategies. Foliar-applied urea has long been used to supplement soil N applications, but there have been no apparent attempts to replace soil N applications completely in deciduous orchard culture. Two experiments were conducted to study the effect of foliar-applied low biuret urea on productivity and fruit growth of the early maturing peach [Prunus persica L. Batsch (Peach Group)] cultivar, Early Maycrest. In a 3-year experiment, a total foliar urea regime was compared to an equivalent amount of N applied to the soil. The foliar treatment supplied adequate amounts of N to the various organs of the tree including the roots, shoots, and fruit buds, but mean fruit weights were lower than in the soil-fertilized treatment. In a 2-year experiment, a 50%-50% combination treatment of soil-applied N in late summer with foliar-applied N in October, maintained yields and fruit weight equal to the soil-fertilized control. Some soil-applied N appears necessary for optimum fruit growth. Soil N application may be needed to support root proliferation and associated processes, but we did not determine a threshold amount of soil-applied N needed. The combination treatment also reduced excessive vegetative growth which is characteristic of early maturing peach cultivars. Therefore, this combination treatment offers promise as a viable commercial practice for maintaining tree productivity and controlling excessive vegetative growth in peach trees.

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R.S. Johnson, D.F. Handley, and T.M. DeJong

Early maturing peach trees [Prunus persica (L.) Batsch cv. Regina] growing on a deep sandy loam soil were subjected to three levels of postharvest irrigation over 4 years. The control treatment was irrigated with ≈ 10 to 15 cm of water at 2- to 3-week intervals, the medium treatment received a single irrigation (20 to 30 cm) in early August, and the dry treatment was not irrigated between early to mid-June and mid-October. All received a predormancy irrigation of 10 to 15 cm in mid- to late October. Flower and fruit density were greater in the dry treatment than the control. The occurrence of double fruit was also greatly increased in the dry treatment but not in the medium treatment, when compared with the control. After normal commercial hand thinning, yields and fruit size were no different among the three treatments over all 4 years. Vegetative growth as measured by dormant pruning weights, trunk radial growth, and canopy shaded area was reduced in the dry treatment, but there was no indication of progressively declining vigor. Soil moisture determinations indicate that water use by the control occurred mainly in the upper soil profile. In the dry treatment, as the upper profile dried, water was extracted progressively deeper, down to at least 300 cm. The main disadvantage of severe postharvest water stress was the substantial increase of double fruits.

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Aydin Uzun, Osman Gulsen, Gucer Kafa, and Ubeyit Seday

of the cultivars, Alata, Gulsen, and Uzun, are completely seedless, whereas ‘Eylul’ has seeds and is early-maturing. These new cultivars are suited to the citrus fresh market. The seedless cultivars can be harvested from November to February and

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Zhenyu Huang, Lehan Xia, Yibin Feng, Jingtao Hui, Shurui Qiao, and Yuling Chen

introduced apricot cultivars like ‘Gold Sun’ and ‘Katy’ are highly productive, but lack the sweetness and aroma of Chinese traditional cultivars, which cannot meet the needs of the market ( Zhao et al., 2016 ). ‘Meishuo’ is a newly selected, early-maturing

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Antonio Carrillo-Navarro, Alfonso Guevara-Gazquez, Margarita Pérez-Jiménez, Leonor Ruiz-García, and José Cos-Terrer

Mediterranean area are marketable in the very early season (mid-April to early May) and the European-wide demand for early-maturing peaches exceeds supply. In this respect, the new cultivar, Alisio 15 ® , has the potential to contribute to the supply of fresh