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Benjamin C. Garland, Michelle S. Schroeder-Moreno, Gina E. Fernandez, and Nancy G. Creamer

effects; 2) the 8-week window for summer cover crops may not have been of sufficient duration to maximize cover crop biomass and organic matter and nutrient deposition; and 3) nutrients, especially N, were not limiting to strawberries and thus there was

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Achala N. KC, Ann L. Rasmussen, and Joseph B. DeShields

and Elkins, 2007 ). The optimal fruit firmness needed at harvest for uniform ripening after storage is predetermined for these cultivars ( Sugar, 2007 ; Villalobos-Acuna and Mitcham, 2008 ). Harvesting the fruit at their optimal window of fruit

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Michelle L. Bell and James R. Baker

Twenty-eight greenhouse screening materials, with predetermined airflow resistance values, were evaluated for exclusion of silverleaf whitefly (Bemisia argentifolii Perring & Bellows) and thrips from a mixed-species population. Screens differed in exclusion efficacy, as a percentage of the fiberglass window screen control and at an approach velocity of at 92 m/min, from –35 to 94% for silverleaf whitefly and from –13 to 95% for thrips. Seventeen screens excluded more silverleaf whitefly, whereas seven excluded more thrips than the window screen control. One material differentially excluded whitefly over thrips; many more differentially excluded thrips over whitefly. Airflow resistance, indicative of mesh hole size, did not necessarily correspond with degree of exclusion. Though two high-resistance screens, No-Thrips and Econet S, excluded both pests, not all materials characterized as highly resistant to airflow provided significant exclusion. Exclusion of both pests was also attained with three moderate resistance screens, BugBed 123, BugBed 85, Pak 44×44, and one low-resistance screen, BugBed 110UV.

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S.B. Sterrett, J.W. Mapp Jr., and C.W. Coale Jr.

An interdisciplinary systems approach was used to explore the potential of fall, fresh-market broccoli as a new enterprise for eastern Virginia. Thirteen cultivars were evaluated in three plantings. Crop value was estimated at each harvest based on weekly market prices. The market window was open from mid-October until late November, with production of 160 cartons/ha, each at 11 kg. However, production of 120 cartons/ha narrowed the window to 2 weeks. Yield of some cultivars exceeded 160 cartons/ha in the first planting; yield of others was below the target production in the second planting. Low yield and low prices during most of the harvest period for the second planting suggests that the optimum harvest season ends in mid- to late November. Problems with poor plant establishment must be addressed before growers can fully capitalize on potential of broccoli as a new enterprise.

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S. Kaan Kurtural, Lydia F. Wessner, and Geoffrey Dervishian

in this study resulted in a Ravaz Index window recommended for red wine grape cultivars for the region with similar or better berry skin phenolic accumulation than spur-pruned vines. The ‘Syrah’/’SO4’ combination on the 1.35-m high, bilateral cordon

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Bruce W. Wood, Lenny Wells, and Frank Funderburke

standards, can increase nutmeat yield and quality and reduce fruit drop in certain ‘Desirable’ pecan orchards. It appears that K stress of young developing fruit can potentially trigger fruit abscission associated with the Stage II drop window when

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Lisa Tang, Garima Singh, Megan Dewdney, and Tripti Vashisth

exogenous GA 3 further shortens the infection window of flower-targeting pathogens and enhances disease prevention awaits determination. Literature Cited Agostini, J.P. Gottwald, T.R. Timmer, L.W. 1993 Temporal and spatial dynamics of

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Skyler Simnitt, Tatiana Borisova, Dario Chavez, and Mercy Olmstead

lucrative long-term agreements that last to the end of the season (i.e., August). Overall, by incorporating early- and late-season varieties, Georgia producers succeed in extending their market windows. Participants also suggested that using storage space

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Todd C. Einhorn, Yan Wang, and Janet Turner

orchardists. Subsequently, sweet cherry producers have diversified with early- and late-maturing cultivars to expand the harvest window. In recent years, record sweet cherry crops have incentivized production of late-maturing cherries, which allow time for

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Thomas E. Marler and Haluk M. Discekici

`Red Lady' and `Tainung #1' papaya plants were grown in nursery trays with cells 5.1 cm in diameter. After 10 weeks, mean height of the `Red Lady' plants was 10.1 cm and that of the `Tainung #1' plants was 9.3 cm. Each of five plants per cultivar was planted between two root observation windows, one at 45 cm and the other at 95 cm. Roots reached the 45-cm observation window in 30 days, when mean height of the `Red Lady' plants was 18.7 cm and that of the `Tainung #1' plants was 13.0 cm. Roots reached the 95-cm observation window in 55 days, when mean height of the `Red Lady' plants was 55.4 cm and that of the `Tainung #1' plants was 40.6 cm. Thus, root extension during these initial 55 days was 17 to 18 mm per day for both cultivars, and stem extension during this period was 8.7 mm·d–1 for `Red Lady' and 5.5 mm per day for `Tainung #1'. Root extension declined for both cultivars to ≈12 mm·d–1 by the initial bloom period, then further declined to ≈4 mm·d–1 during and after the initial fruit set stage. Stem extension increased to about 19 mm·d–1 after the plants were established and remained at this rate until well into the stage of heavy fruit set and growth, when it declined to about 8 mm·d–1. The amount of fruit set influenced root characteristics more than cultivar.