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Samuel Salazar-García and Carol J. Lovatt

Avocado trees (Persea americana Mill.) bearing a heavy crop produce a light “off” bloom the next spring. This results in a light crop and a subsequent intense “on” bloom the year after. The objective of the study was to quantify the effects of GA3 canopy sprays applied to `Hass' avocado trees during the months preceding an “off” or “on” bloom on inflorescence and vegetative shoot number and yield. The experiment was initiated approximately seven months before an anticipated “off” bloom in an attempt to increase flowering intensity and yield. GA3 (25 or 100 mg·L-1) was applied to separate sets of trees in September (early stage of inflorescence initiation), November (early stage of inflorescence development), January (initial development of the perianth of terminal flowers), March (cauliflower stage of inflorescence development; only 25 mg·L-1), or monthly from September through January (only 25 mg·L-1). Control trees did not receive any treatment. GA3 (100 mg·L-1) applied in September reduced inflorescence number in both years, but not yield. GA3 (25 or 100 mg·L-1) applied in November before the “on” bloom reduced inflorescence number with a concomitant increase in vegetative shoot number and 47% yield reduction compared to control trees. This treatment might provide avocado growers with a tool to break the alternate bearing cycle by reducing yield in an expected “on” crop year to achieve a higher yield the following year. GA3 (25 mg·L-1) applied in November or January stimulated early development of the vegetative shoot of indeterminate inflorescences. January and March applications did not affect the number of flowering or vegetative shoots produced either year. GA3 (25 mg·L-1) applied in March at the start of an “off” bloom increased 2-fold the production of commercially valuable fruit (213 to 269 g per fruit) compared to the control.

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Allan F. Brown, Elizabeth H. Jeffery, and John A. Juvik

. oleracea ssp. capitata L.) or kale ( B. oleracea ssp. acephala DC) × cauliflower ( B. oleracea ssp. botrytis L.) ( Bohuon et al., 1996 ; Camargo, 1994 ; Kianian and Quiros, 1992 ; Lan and Patterson, 2001 ; Slocum et al., 1990 ). Crosses between

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Todd C. Wehner and Beiquan Mou

Crop listings : asparagus, bean–dry, bean–green, beet, broccoli, cabbage, cabbage–Chinese, carrot, cauliflower, celery, collard, cucumber, eggplant, endive, herbs–parsley, leek, lettuce, melon, okra, onion, pea–green, pepper, pumpkin, radish

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Samuel Salazar-García, Luis E. Cossio-Vargas, Isidro J.L. González-Durán, and Carol J. Lovatt

, 100, or 1000 mg·L −1 in November, December, or January resulted in a faster rate of inflorescence development from budbreak through the cauliflower stage of inflorescence development compared with untreated branches ( Salazar-García and Lovatt, 1998

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Mark W. Farnham and Dean A. Kopsell

content is orange cauliflower ( B. oleracea L. var. botrytis ), a unique genotype that has been around for several years ( Crisp et al., 1975 ; Dickson et al., 1988 ). This phenotype occurs as a spontaneous mutant conditioned by the Or (orange) gene

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Megan J. Bowman, David K. Willis, and Philipp W. Simon

found for the Or mutation found in cauliflower [ Brassica oleracea var. botrytis ( Li et al., 2001 , 2003 , 2006 ; Li and Garvin, 2003 ; Li and Van Eck, 2007 ; Lu et al., 2006 )]. As discussed in Cazzonelli and Pogson (2010) , potential

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. Using simplified coefficients and growth stages (vegetables) or canopy cover (fruits), the calculators helped lower adoption barriers to a new and unfamiliar technology. Cauliflower Variety Trial in New York Cauliflower is an excellent crop for growers

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Clifton A. Martin and Rebecca Grube Sideman

purple- and white-sprouting broccolis that are biennial in habit, are cultivated for lateral shoot development, and bear white, yellow, or green cauliflower curds or clusters of young flower buds whose sepals may be green or purple ( Gray, 1989 ). Annual

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Howard F. Harrison Jr. and Mark W. Farnham

United States, except in California where the herbicide is banned ( FMC Corp., 2005 ). However, it is not registered for the other cole crops [broccoli, brussels sprouts ( Brassica oleracea Gemmifera group), cauliflower ( B. oleracea Botrytis group

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Suzanne O’Connell

var. italica ), cauliflower ( B. oleracea var. botrytis ), and turnip ( Brassica rapa var. rapa ) were planted under the high tunnels around the same time. Results for the broccoli and cauliflower study are available separately ( O’Connell and