Production of seedlings of essential oil rose variety ‘Lada’ depending on the scheme and age of the nursery plot

V. Zolotilov, A. Mishnev, O. Zolotilova, O. Skipor
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Abstract

Interest in essential oil production is reviving in Russia. Attention to essential oil rose as one of the main crops in essential oil production, therefore, grows too. Expensive planting material is one of the constraining factors in increasing the acreage of Rosa L. plantations. Green cutting is the most cost-effective method. However, it requires particular conditions for growing mother plants. The purpose of the research was to choose the optimal scheme of growing mother plants and determine the lifetime of the shrubs of essential oil rose variety ‘Lada’ to increase the yield of seedlings by rooting green cuttings. The studies were conducted between 2007 and 2015 at the trial fields of FSBSI “Research Institute of Agriculture of Crimea” located in the village of Krymskaya Rosa Belogorskiy district. Research material – essential oil rose variety ‘Lada.’ Climate of the study area – arid. The studies were carried out according to the methodology of field experiments on the technology of essential oil crops cultivation and guidelines for obtaining certified planting material. The nursery plot was laid in 2006. We studied two mother plant placement schemes (according to the feeding area) 0.50 × 0.15 m and 0.50 × 0.25 m. Field experiments were replicated four times. Accounting area – 17.5 m2. The maximum number of seedlings from 1m2 was obtained when mother plants were placed according to the scheme of 0.50 × 0.15 m. This scheme allowed obtaining 742 conditioned seedlings per one square meter for nine years of nursery plot exploitation or 7 to 136 young plants annually, depending on the age of the mother plants. The maximum number of green cuttings (283–296) per unit area was harvested for the eighth or ninth year of the nursery plot exploitation. The maximum number of seedlings (136) was obtained for the 8th year of nursery plot operation. The rooting rate of green cuttings harvested in the first year is not high – only 23 %. In the next five years, 50 to 65 % of green cuttings can root. From the 7th year of nursery plot operation, there is a decrease in the possibility to root (to 35–48 %).
精油玫瑰品种“拉达”幼苗的生产取决于苗圃的方案和年龄
俄罗斯对精油生产的兴趣正在复苏。因此,玫瑰作为精油生产中的主要作物之一,受到了人们的重视。昂贵的种植材料是制约玫瑰人工林面积增加的因素之一。绿色切割是最经济有效的方法。然而,它需要特殊的条件来种植母植物。本研究的目的是选择精油玫瑰品种‘拉达’的最佳母本种植方案,并确定其灌木的寿命,通过绿扦插生根来提高其幼苗产量。这些研究于2007年至2015年在克里米亚农业研究所(FSBSI)的试验田进行,该研究所位于Krymskaya Rosa Belogorskiy区。研究材料——精油玫瑰品种“拉达”。研究区域的气候-干旱。本研究依据油料作物栽培技术田间试验方法和获得认证种植材料指南进行。苗圃于2006年铺设。研究了两种母株放置方案(根据饲养面积):0.50 × 0.15 m和0.50 × 0.25 m。现场实验重复了四次。核算面积- 17.5 m2。当母本按0.50 × 0.15 m的方案放置时,1m2的苗数最大。该方案允许在9年的苗圃开发中,每平方米获得742棵有条件的幼苗,或每年7至136株幼苗,具体取决于母株的年龄。苗区开发的第8、9年,单位面积绿枝收获量最大(283 ~ 296根)。苗区经营第8年苗木苗数最高(136株)。第一年收获的绿扦插生根率不高,仅为23%。在未来五年内,50%至65%的绿色插枝可以生根。从苗圃地块运营的第7年开始,生根的可能性下降(降至35 - 48%)。
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