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George E. Boyhan, Reid L. Torrance, Jeff Cook, Cliff Riner and C. Randell Hill

good yields of quality onions. Onion transplants are ready in 8 to 10 weeks from sowing, but typically require 8 weeks or longer for the entire onion crop to be transplanted. In addition, onions with a propensity for double bulbs were evaluated for the

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George E. Boyhan, Reid L. Torrance, Jeff Cook, Cliff Riner and C. Randell Hill

) rates, it was found that the highest density (10 × 5 cm) had the smallest number of doubled bulbs and the thinnest necks compared with the medium (10 × 7.5 cm) and low (10 × 10 cm) densities ( Gupta and Sharma, 2000 ). In addition, the high density had

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Jongtae Lee, Byeonggyu Min, Heedae Kim, Juyeon Kim, Young-Seok Kwon and George E. Boyhan

early spring could cause doubled onion bulbs or inflorescence initiation (bolting), resulting in unmarketable bulbs. In overwintering onions, doubled bulbs are promoted by more than 10 total differentiated leaves and a sheath diameter of more than 7.0 mm

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

mature plants (only one sample of 10 shoots per treatment) were also analyzed for mineral nutrients. Plant diseases and disorders. Incidences of bolting (flower stems), double bulbs, botrytis leaf blight ( B. cinerea ), and sour skin ( B. cepacia ) were

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varieties with a propensity to form doubled bulbs can be sown later to reduce the occurrence of this phenomenon. However, later transplanting with these varieties only lowered doubled bulbs with earlier-sown seeds. Transplant Size and Plant Population Affect

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

. Incidences of bolting (flower stems), double bulbs, botrytis leaf blight ( Botrytis cinerea Pers.), and sour skin [ Pseudomonas cepacia ( Burkholder ) Palleroni & Holmes ] were determined as percentage of plants with the symptoms. Weather. Weather data

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Christopher S. Cramer

double bulbs). The number of culls was subtracted from the total bulb number to obtain the marketable bulb number per plot. After bulbs were graded, they were weighed again to obtain marketable bulb weight per plot. The average bulb weight was calculated

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Christopher S. Cramer

in diameter, split and double bulbs). The number of culls was subtracted from the total bulb number to obtain the marketable bulb number per plot. After bulbs were graded, they were weighed again to obtain marketable bulb weight per plot. The average

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Christopher S. Cramer and Joe N. Corgan

under 3.8 cm in diameter, split and double bulbs). The number of culls was subtracted from the total bulb number to obtain the marketable bulb number per plot. After bulbs were graded, they were weighed again to obtain marketable bulb weight per plot

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Christopher S. Cramer

each plot. Bulbs were graded to remove culls (diseased bulbs, bulbs under 3.8 cm in diameter, split and double bulbs). The number of culls was subtracted from the total bulb number to obtain the marketable bulb number per plot. After bulbs were graded