Assessment of tuber storage and sprouting treatments for<i>Sandersonia aurantiaca</i>

Clark, G. E.

doi:10.1080/01140671.1994.9513855

Cited by 18 publications

(30 citation statements)

References 6 publications

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“…5 g (mean weight 1.25 g) that had been stored for 4-5 months at 4°C were pre-sprouted for 7 days at 20°C (Clark 1994). Tubers were then dipped in protective fungicide mix of 0.5 g/litre benomyl plus 2.0 g/litre thiram for 10 min before to planting on 14 October 1996 into polystyrene trays (595 x 420 x 190 mm) containing one of three media at one of two nutrition levels.…”

Section: Methodsmentioning

confidence: 99%

Effects of growing media and nutrition on tuber russeting, storage, and production inSandersonia aurantiaca

Clark¹,

Burge

2000

New Zealand Journal of Crop and Horticultural Science

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The effects of three planting media (50:50 peat:pumice, Pinus radiata bark, and soil) at two nutrient rates (1.0 and 4.0 kg/m 3 Nutricote) were assessed on sandersonia (Sandersonia aurantiaca (Hook.)) tuber production, the incidence of tuber russeting, and subsequent performance of tubers. Tuber weights were greater at the higher nutrient rate. Lighter tubers were produced in the bark medium than in the peat:pumice or soil. Tuber russeting was less, and commercially acceptable, at the low nutrient rate in all media. At the high nutrient rate russeting was greater in tubers grown in peat:pumice and soil compared to those grown in bark. At the high nutrient rate tissue concentrations of K, N, S, and P were greater. Tubers grown in bark had lower concentrations of N and S compared to tubers grown in soil and peat. At the high rate of nutrition tuber sprouting in the subsequent season was less in the tubers grown in soil and peat:pumice compared to the bark-grown tubers. Stem length, stem weight, flower number, and vase life from tubers produced in bark at the high nutrient rate were similar to those produced in the soil and peatpumice media at the low nutrient rate. There was no improvement in production indices for the tubers grown in soil or peat:pumice at the high nutrient rate. These findings show that if grown in peat:pumice or soil, sandersonia tubers should be produced at low nutrient levels to reduce the incidence of tuber russeting and to improve subsequent forcing. If grown in bark media, higher nutrient rates can be used to maintain forcing quality without causing high levels of russeting.

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Section: Methodsmentioning

confidence: 99%

Effects of growing media and nutrition on tuber russeting, storage, and production inSandersonia aurantiaca

Clark¹,

Burge

2000

New Zealand Journal of Crop and Horticultural Science

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“…Storage temperatures of 3-5°C are suitable for the long-term storage of sandersonia tubers (Clark 1994). Sprouting time decreased with increasing storage duration ( 110-202 days) and with increasing storage temperatures (1-5°C).…”

Section: Introductionmentioning

confidence: 99%

Effects of storage temperature and duration on the dormancy ofSandersonia aurantiacatubers

Clark

1995

New Zealand Journal of Crop and Horticultural Science

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The effects of three storage temperatures (1,4, and 9.5°C) and six storage durations (0, 30, 60, 90, 120, and 150 days) on tuber sprouting and stem quality of Sandersonia aurantiaca were investigated. Tubers did not sprout at lifting when given inductive conditions, but high percentages sprouted (91.7%) after only 30 days of chilling. Percent sprouting remained high (93.8%) after 90 days of storage, but decreased to 86.5% with 150 days of storage. Sprouting percentages were high for all storage durations at 4°C. Sprouting was significantly less after storage at 9.5°C than at 1 and 4°C at all storage durations. Time to initiation of sprouting and the sprouting period decreased with storage duration up to 90-120 days and were lowest at 4°C. Stem length and flower numbers per stem were significantly higher at storage durations of 90-120 days. Following 90 days of storage, stem length was greater for storage at 9.5°C than at 1 or 4°C. Storage at 4°C for 90-120 days is required to ensure rapid and even sprouting of sandersonia.

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“…Clark (1994) found a similar reduction in tuber size with later planting dates. Although a relationship was demonstrated between tuber size and secondary tuber numbers, this may not be universal, as grower observation has been that secondary tubers can occur in high numbers on all tuber sizes.…”

Section: Discussionmentioning

confidence: 56%

“…No secondary tubers occur on tubers produced from cut flower crops, where stems are cut to leave two leaves per growing stem, but there is a resultant loss in tuber size relative to the planted tuber (Clark 1994). These results suggest that either a reduction in leaf area or the removal of the shoot tip or flowers (auxin sources) may provide means of controlling secondary tuber formation.…”

Section: Introductionmentioning

confidence: 87%

Effects of growing environments, planting date, and stem treatments on sandersonia tuber weight and secondary tuber development

Clark

Burge

1997

New Zealand Journal of Crop and Horticultural Science

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Sandersonia (Sandersonia aurantiaca Hook) tuber growth and secondary tuber development were assessed in two growing environments (a greenhouse and outdoors), at three planting dates (1 October, 1 December, and 1 February) and with six stem pruning treatments. Tubers of c. 1 g were used. The pruning treatments consisted of cutting the stem just above the second flower when 50% of the stems had the second flower open, or 2, 4, 6, and 8 weeks later. In another experiment the effect of stem tipping, stem pruning, flower removal, and an auxin transport inhibitor (2,3,5-triiodobenzoic acid (TIBA)) applied 3 weeks after the second flower opened were assessed. Tuber growth and secondary tuber development were affected by the date of planting, with both tuber weight and incidence of secondary tubers declining significantly in the later planting dates. Environmental factors including temperature, radiation, and day length may have influenced the rate and type of tuber growth. Stem pruning, removal of the growing tip plus flowers, or applying TIBA reduced secondary tuber numbers and had Received 7 September 1995; accepted 29 November 1996 little effect on tuber size. This study suggests that it is possible to reduce the presence of undesirable secondary tubers by manipulating the growing environment or by developing appropriate cultural practices. H95054

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Assessment of tuber storage and sprouting treatments forSandersonia aurantiaca

Cited by 18 publications

References 6 publications

Effects of growing media and nutrition on tuber russeting, storage, and production inSandersonia aurantiaca

Effects of growing media and nutrition on tuber russeting, storage, and production inSandersonia aurantiaca

Effects of storage temperature and duration on the dormancy ofSandersonia aurantiacatubers

Effects of growing environments, planting date, and stem treatments on sandersonia tuber weight and secondary tuber development

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