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首页> 外文期刊>HortTechnology >Yield and quality of field-grown celosia and globe amaranth cut flowers at four plant densities.
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Yield and quality of field-grown celosia and globe amaranth cut flowers at four plant densities.

机译:田间生长的鸡冠花和千日红的产量和品质在四种植物密度下切花。

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摘要

Field-grown cut and dried flowers could provide a high-value crop selection for New Mexico. We conducted a 1-year field study to evaluate flower yield and quality characteristics of common globe amaranth (Gomphrena globosa), 'Strawberry Fields' globe amaranth (Gomphrena haageana), cockscomb celosia (Celosia argentea var. cristata 'Chief Mix'), and wheat celosia (Celosia spicata 'Pink Candle'). Within-row spacing of 15 or 20 cm combined with two-row or three-row per bed plantings resulted in field planting densities ranging from 66,670 to 120,010 plants/ha of common globe amaranth and 'Strawberry Fields' globe amaranth, and 100,005 to 200,010 plants/ha of cockscomb and wheat celosia. All but cockscomb celosia produced four harvests that began 22 May and ended 18 Oct., depending on species. Both globe amaranth species had a 5- to 6-month harvest season, two to three midseason to late-season peak harvests, and over 1000 harvested stems totaling 1.4 to 1.8 kg dry weight per 1.5-m2 plot across the season. Both celosia species had a 4.5-month harvest season, one early summer peak harvest, and fewer than 300 harvested stems totaling 0.6 to 0.7 kg dry weight per plot for the year. Seasonally progressive increases in flowering stem length of both globe amaranth species and wheat celosia, and in flowering stem diameter of both globe amaranth species and cockscomb celosia, were observed. Flowering head size of both globe amaranth species and of wheat celosia varied little with harvest season, whereas the head diameter of cockscomb celosia increased with the season. Postharvest flower retention after mechanical impact was about 2% higher for common globe amaranth than it was for 'Strawberry Fields' globe amaranth, decreased by about 6% from early to later harvests for both celosia species, and was inversely related to the head size of both globe amaranth species and cockscomb celosia. Despite the wide range in planting density, the density effect was largely limited to cockscomb celosia. For that species, three-row planting (high density) increased the total number of spray flower (multiple head) stems, provided longer stems later into the season and wider heads midway into the season, and prolonged the production of spray stems (15-cm spacing only). Results demonstrate that these four species are excellent candidates as new specialty crops in semiarid conditions.
机译:田间种植的切花和干花可以为新墨西哥州提供高价值的农作物选择。我们进行了为期1年的田间研究,以评估普通globe菜( Gomphrena globosa ),“草莓田” globe菜( Gomphrena haageana ),鸡冠花的产量和品质特征鸡冠花(鸡冠花(Celosia argentea var。 cristata 'Chief Mix'))和小麦鸡冠花( Celosia spicata 'Pink Candle')。行距为15或20厘米,每床种植两行或三行,导致常见的千日红和“草莓田”千日红的田间种植密度为66,670至120,010株/公顷,以及100,005至200,010鸡冠花和小麦鸡冠花的植物/公顷。从5月22日开始到10月18日结束,除鸡冠鸡鸡以外,其他所有鸡均收获了四批,具体取决于品种。两种globe菜品种都有一个5到6个月的收获季节,从中期到后期的高峰期收获有2到3个季节,每1.5 m 2 超过1000个收获的茎,总干重为1.4至1.8 kg整个季节的情节。两种鸡冠花均具有4.5个月的收获季节,一个初夏的高峰收获期,并且全年收获的茎数少于300个,每块总重0.6至0.7千克。观察到globe菜和小麦鸡冠花的花茎长度随季节逐渐增加,而globe菜和鸡冠花的花茎直径随季节增加。 globe菜和小麦鸡冠花的花头大小随收获季节变化不大,而鸡冠子鸡冠头的直径随季节增加。机械撞击后,普通globe菜的采后花滞留量比“草莓田” mar菜高约2%,两种鸡冠花品种从早收到晚收都减少了约6%,并且与of头的大小成反比。 globe菜和鸡冠鸡都可以。尽管种植密度变化很大,但密度效应在很大程度上仅限于鸡冠状鸡冠花。对于该树种,进行三行种植(高密度)可增加喷雾花(多头)茎的总数,在季节后期提供更长的茎,在季节中期提供较宽的茎,并延长了喷雾茎的产量(15-厘米间距)。结果表明,这四个物种是半干旱条件下新特产的极佳候选者。

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