Effects of plant density on the yield and yield components of true potato seed (TPS) hybrids in early and main crop potato production systems

Çalışkan, Mehmet Emin; Kusman, Noyan; Çalışkan, Sevgi

doi:10.1016/j.fcr.2009.08.002

Cited by 20 publications

(17 citation statements)

References 26 publications

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“…It is questionable whether conventional plant spacing results in maximum yield, particularly for root and tuber crops. In accordance with Caliskan et al (2009), the optimization of plant density is of great importance in maximizing yield, because increasing plant density per unit area normally results in competition between plants for growth resources such as solar radiation, water, and nutrients, whereas suboptimal densities lead to waste of these inputs.…”

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confidence: 99%

Crop Coefficient-based Deficit Irrigation and Planting Density for Onion: Growth, Yield, and Bulb Quality

Leskovar¹,

Agehara²,

Yoo³

et al. 2012

horts

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Additional index words. Allium Cepa, evapotranspiration, bulb size, pungency, flavonoids, quercetin Abstract. Agricultural communities in the semiarid regions of the world are constantly being affected by water scarcity, increased regulations restricting water use, strong competition for irrigation water with the urban sector, and severe drought periods. Conversely, the consumer demand for high-quality and nutritious foods is increasing rapidly. A 2-year field study evaluated growth, yield, and bulb quality in response to precision planting density and deficit irrigation of onion (Allium cepa L.) in southwest Texas. Seeds of short-day sweet onion cv. Texas Grano 1015Y were planted in the field on 11 Nov. 2007 and 30 Oct. 2008 at two planting densities (PDs), 397,000 (standard) and 484,000 (high) seeds/ha. Three irrigation rates using growth stage-specific crop coefficients and subsurface drip were imposed after plants were fully established, 100%, 75%, and 50% crop evapotranspiration rates (ETc). Total rainfall plus irrigation received for each irrigation rate were 594, 501, and 413 mm in 2008 and 662, 574, and 486 mm in 2009. In both seasons, there were consistent trends in growth, yield, and quality parameters. Leaf fresh weight was unaffected by PD but was reduced by deficit irrigation at 50% ETc. Although increasing planting density reduced the average bulb size by 12%, it increased the number of marketable bulbs by 21% to 33% and marketable yield by 7% to 14%. In contrast, deficit irrigation showed a trend to reduce both the number of bulbs and bulb size with yield reductions of 8% to 13% at 75% ETc and 19% to 27% at 50% ETc. Neither planting density nor deficit irrigation rate had a significant effect on soluble solids content, pungency, or quercetin contents. These results suggest that growers of short-day onions in semiarid regions could adjust PDs to target high-value bulb sizes. Implementing water-conserving practices (deficit irrigation at 75% ETc rate) would result in a decrease of high-value bulb grades and modest losses in yield but not flavor or nutritional components.

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confidence: 99%

Crop Coefficient-based Deficit Irrigation and Planting Density for Onion: Growth, Yield, and Bulb Quality

Leskovar¹,

Agehara²,

Yoo³

et al. 2012

horts

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show abstract

“…As for CALISKAN et al (2009), the decrease in row spacing tends to cause an increase in the number of wells per unit area, resulting in the production of tubers with a smaller mass, due the increased competition between canopy growth and accumulation of reserves, resulting in lower growth of the tubers.…”

Section: Resultsmentioning

confidence: 99%

“…CALISKAN et al (2009) observed that the potato crop tends to maintain a ratio of reducing the size and increasing the number of units of tubers produced with the increase of density of plants.…”

Section: Introductionmentioning

confidence: 99%

Effect of biostimulants and seed treatment with fungicide on the germination and vigor of soybean seedlings

Bezerra¹,

Silva²,

Silva³

et al. 2015

Revista Brasileira De Tecnologia Aplicada Nas Ciências Agrárias

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“…En este estudio, el rendimiento se incrementó con la densidad de plantación, hasta un cierto nivel de la misma, al igual que ha sido citado en otras plantas cultivadas por sus tubérculos, bulbos y raíces, como patata (Caliskan et al, 2009), cebolla (Brewster y Salter, 1980) y zanahoria (McCollum et al, 1986). En el presente estudio la densidad de plantación está directamente relacionada con el tipo de plantación, mesetas o caballones, pero en varios estudios donde se han analizado por separado ambos factores, se concluye que aunque el efecto del tipo de plantación no resulta tan evidente como el de la densidad de plantación, la realización de mesetas parece prometedora en determinadas situaciones (Essah y Honeycutt, 2004), si se dispone de maquinaria adecuada (Mundy et al, 1999).…”

Section: 2-respuesta Del Cultivo a Las Estrategias De Plantaciónunclassified

Respuesta Productiva De La Chufa a Distintas Estrategias De Riego Y Tipos De Plantación

Pascual-Seva

Bautista

López-Galarza

2015

XXXIII Congreso Nacional De Riegos

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Effects of plant density on the yield and yield components of true potato seed (TPS) hybrids in early and main crop potato production systems

Cited by 20 publications

References 26 publications

Crop Coefficient-based Deficit Irrigation and Planting Density for Onion: Growth, Yield, and Bulb Quality

Crop Coefficient-based Deficit Irrigation and Planting Density for Onion: Growth, Yield, and Bulb Quality

Effect of biostimulants and seed treatment with fungicide on the germination and vigor of soybean seedlings

Respuesta Productiva De La Chufa a Distintas Estrategias De Riego Y Tipos De Plantación

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