Bud Population Dynamics and Productivity of Asparagus

Woolley, D.J.; Daningsih, Entin; Nichols, M. A.

doi:10.17660/actahortic.2008.776.55

Cited by 7 publications

(8 citation statements)

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“…The main period of bud formation is during fern growth following harvest and only a few buds are formed during harvesting ( [8,23]). However, even if new buds were formed, they may not be viable and hence not contribute to spear yield of the current harvest [11]. We observed that only a few new buds were formed during our experiments.…”

Section: Plant Levelmentioning

confidence: 60%

“…[9] showed that asparagus yield can be limited by the availability of carbohydrates in storage roots. However, [11] stated that the number of available buds also can limit yield. As reported by [22] from an experiment in a constant environment, as in our study (Figure 8(b)), the rate of spear production was initially almost constant for a considerable time.…”

Section: Open Accessmentioning

confidence: 99%

“…For instance [9] showed that asparagus yield is related to the carbohydrate supply in storage roots and [10] suggested a method to check if yield is limited by a low carbohydrate status. The work of Woolley et al (2008) [11] indicated that the number of buds also can limit the total number of high quality spears.…”

Section: Introductionmentioning

confidence: 99%

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Bud and spear development of asparagus under constant temperature

Feller¹,

Graefe²,

Fink³

2012

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Objectives of our study were to quantify the effects of apical dominance and bud cluster activity on asparagus yield patterns and to collect data for process-oriented modeling of the asparagus crop. Plants were grown in 40 L containers. After four years the soil above the asparagus crowns was removed and the containers were placed in a growth chamber at 20°C for three months. During this time, spear length was measured daily except at weekends, and spears were cut when longer than 25 cm. Each spear was assigned to a bud cluster, defined as a dense group of buds clearly distinct from other bud groups on the crown. Although temperature was constant, several properties measured in this study changed during the experiment. The number of active bud clusters first increased then decreased, the lag time between spears growing at the same cluster increased, and the relative growth rate of spears decreased. The constant increase of harvested spears per plant stopped abruptly when the plants ran out of viable buds. At the crop level, <i>i.e.</i> the average for all plants, which is normally monitored in field trials, the transition from linear yield increase to zero increase was less abrupt since plants stopped growing spears on different dates. In our study asparagus yield, <i>i.e.</i> the number of harvested spears, was not limited by low carbohydrate in storage roots, but by a lack of viable buds. This was concluded from the abrupt halt in spear production observed in all plants despite the fact that some plants still had considerable carbohydrate content

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Section: Plant Levelmentioning

confidence: 60%

Section: Open Accessmentioning

confidence: 99%

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Bud and spear development of asparagus under constant temperature

Feller¹,

Graefe²,

Fink³

2012

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“…This reduced duration of the harvest period in forced plants was consistent throughout the study and is a key reason why forced yields were lower. Additional reasons for the response likely include reduced stored energy reserve levels in the crown and smaller bud size, assuming that many of the largest and most vigorous buds were initially allowed to grow into ferns (Wilson et al, 1999(Wilson et al, , 2008Woolley et al, 2008). Yields in 2002 were lower than in 2001, even in the normal springharvested plots.…”

Section: Resultsmentioning

confidence: 99%

“…In addition to genetics, environmental conditions, and horticultural management, asparagus yield is determined by the amount of carbohydrate stored in the root system along with the number of buds produced (Wilson et al, 1999). Harvest patterns and environmental conditions cause accumulation and depletion of root system carbohydrates throughout the year and may affect the success of any forcing regimen (Wilson et al, 2008;Woolley et al, 2008).…”

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confidence: 99%

Performance of Late-Spring Forced Asparagus Rotated with Normal Spring Harvest Under Temperate Climate Conditions

Thomas

Jett

Ellersieck

2011

International Journal of Vegetable Science

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Asparagus (Asparagus officinalis L.) is typically harvested for up to 6 weeks in spring, but cultural techniques can be used to extend the harvest. To force spear production beyond the normal harvest season, asparagus plants are allowed to grow undisturbed in spring and then are mowed later in the season, resulting in a flush of harvestable spears. Repetitive off-season forcing of asparagus does not appear to be a viable production practice in the temperate climate conditions of the Midwestern United States because the growing season is not long enough to permit adequate replenishment of energy reserves after even a brief forced harvest. An experiment was conducted in southwest Missouri to determine whether a system of rotating late-spring forced asparagus harvests with typical spring harvests would allow plants to recover sufficient vigor to establish a sustainable extended asparagus harvest regimen in the region. 'Jersey Knight' asparagus was planted in 1999 and harvested in eight different 3-year rotations involving late-spring forcing and normal spring harvest from 2001 to 2004. Though yield from normal spring harvests increased during the study, plants that were forced one or more times within a rotation produced less marketable yield and did not recover enough vigor to sustain a satisfactory harvest when subsequently rotated back to spring harvest. Initially, late-spring forced plants yielded roughly half that of normal spring-harvested plants. Though forced plants produced good, marketable spears, they were significantly smaller, with mean weight of 8.1 g compared with 10.3 g for normal spring-harvested spears. There appears to be a need for a longer period of

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The quality of asparagus as affected by preharvest factors

Siomos

2018

Scientia Horticulturae

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Bud Population Dynamics and Productivity of Asparagus

Cited by 7 publications

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Bud and spear development of asparagus under constant temperature

Bud and spear development of asparagus under constant temperature

Performance of Late-Spring Forced Asparagus Rotated with Normal Spring Harvest Under Temperate Climate Conditions

The quality of asparagus as affected by preharvest factors

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