Tag: D. L. Rowland

Growth Stages and Tuber Development of FL1867 Potato under Full and Reduced Irrigation Scheduling

Figure 1. Whole plant samples of FL 1867 during the 2012 growing season at 41 DAP (A), 48 DAP (B), 54 DAP (C), 61 DAP (D), 75 DAP (E), and 90 DAP (F).The potato cultivar ‘Frito Lay 1867’ (‘FL 1867’) is a popular chipping variety grown across Florida and the southern United States. Knowledge of the timing and duration of the tuber initiation and tuber bulking stages for ‘FL 1867’ is critical for timing fertilizer and irrigation applications. So to evaluate the start and length of the tuber initiation and tuber bulking stages under Florida growing conditions, ‘FL 1867’ plants were dug up and photographed on a weekly basis from a commercial field near Live Oak, FL in 2012. This 3-page fact sheet was written by Seth A. Byrd, Diane L. Rowland, and Lincoln Zotarelli, and published by the UF Department of Agronomy, September 2014.
http://edis.ifas.ufl.edu/ag388

Trastornos fisiologicos de la papa: Necrosis por calor interno

Figure 1. Los síntomas de necrosis de calor interno en el mercado fresco de papas ‘Red LaSoda’. Credit: La necrosis por calor interno (NCI) es un trastorno fisiológico que causa un pardeamiento inaceptable del tejido del tubrculo y puede causar pérdidas económicas para el productor. Las tres principales causas de la NCI en los tubérculos es la alta temperatura en el suelo, la humedad inadecuada del suelo y la nutrición sub-óptima de la planta, o la combinación de estos factores. This 4-page fact sheet, the Spanish language version of HS1145, Potato Physiological Disorders: Internal Heat Necrosis was written by L. Zotarelli, J. E. Reyes-Cabrera, C. M. Worthington, C. Hutchinson, S. Byrd, D. Gergela, y D. L. Rowland, and published by the UF Department of Horticultural Sciences, May 2013.
http://edis.ifas.ufl.edu/hs1221

Trastornos fisiologicos de la papa: Centro marron y Corazon hueco (HS1214)

Figure 1. Corazón hueco en ‘Atlantic’El centro marrón y el corazón hueco son trastornos fisiológicos internos no-infecciosos del tubérculo de la papa. Un centro marrón (también llamado corazón incipiente y hueco, corazón marrón o centro de azúcar) se caracteriza por una región muerta en las células de la médula de los tubérculos lo que resulta en un tejido de color marrón. This 3-page fact sheet was written by L. Zotarelli, C. Hutchinson, S. Byrd, D. Gergela, y D. L. Rowland, and published by the UF Department of Horticultural Sciences, January 2013.
http://edis.ifas.ufl.edu/hs1214

Manejo de malezas en las papas (HS1213)

screenshot of fact sheetLas malezas causan problemas en la producción de patata en Florida y puede reducir rendimientos a través de competencia directa por la luz, la humedad y los nutrientes, o por albergar insectos y enfermedades que atacan las patatas. This 4-page fact sheet was written by Peter Dittmar, Seth Byrd, Lincoln Zotarelli, Diane Rowland, and William Stall, and published by the UF Department of Horticultural Sciences, January 2013.
http://edis.ifas.ufl.edu/hs1213

Trastornos fisiologicos de la papa: Grietas de Crecimiento (HS1211)

Figure 1. Grietas de crecimiento moderadas (izquierda) y severas (derecha) en ‘Atlántic’. Créditos: C. HutchinsonLas grietas de crecimiento son un trastorno fisiológigo externo no infeccioso del tubérculo de la papa en el que el tubérculo se agrieta durante el crecimiento. La bendidura se cura, pero deja una fisura en el tubérculo. This 3-page fact sheet was written by L. Zotarelli, C. Hutchinson, S. Byrd, D. Gergela, y D. L. Rowland, and published by the UF Department of Horticultural Sciences, January 2013.
http://edis.ifas.ufl.edu/hs1211

Potato Physiological Disorders – Internal Heat Necrosis (HS1145/HS395)

Figure 1. Internal heat necrosis symptoms in fresh market potato 'Red LaSoda'Internal heat necrosis is a physiological disorder that causes an unacceptable browning of the tuber tissue and can cause economic losses to the grower. The three leading suspected causes of IHN in tubers are high soil temperature, inadequate soil moisture, and suboptimal plant nutrition, or a combination of these factors. This 3-page fact sheet was written by Lincoln Zotarelli, Christine M. Worthington,Chad M. Hutchinson, Seth Byrd, Douglas Gergela, and Diane Rowland, and published by the UF Department of Horticultural Sciences, July 2012. http://edis.ifas.ufl.edu/hs395

Potato Physiological Disorders – Brown Center and Hollow Heart (HS945/HS197)

Figure 1. Hollow heart in 'Atlantic'Brown center and hollow heart are internal noninfectious physiological disorders of the potato tuber. Brown center is characterized by a region of cell death in the pith of the tuber that results in brown tissue. Hollow heart is characterized by a star- or lens-shaped hollow in the center of the tuber This 2-page fact sheet was written by L. Zotarelli, C. Hutchinson, S. Byrd, D. Gergela, and D. L. Rowland, and published by the UF Department of Horticultural Sciences, May 2012.
http://edis.ifas.ufl.edu/hs197

Potato Physiological Disorders – Growth Cracks (HS930/HS182)

ure 1. Moderate (left) and severe (right) growth cracks in 'Atlantic'Growth cracking is an external noninfectious physiological disorder of the potato tuber in which the tuber splits while growing. The split heals but leaves a fissure in the tuber. Growth cracks generally start at the bud or apical end of the potato and can extend lengthwise. They vary in severity from a surface abrasion to a split through the tuber, depending on the stage of growth during which the initial cracking occurred This 2-page fact sheet was written by L. Zotarelli, C. Hutchinson, S. Byrd, D. Gergela, and D. L. Rowland, and published by the UF Department of Horticultural Sciences, May 2012.
http://edis.ifas.ufl.edu/hs182