Effect of Cropping System and Humidity Level on Nitrate Content and Tipburn Incidence in Endive
Effect of Cropping System and Humidity Level on Nitrate Content and Tipburn Incidence in Endive
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DOI：
10.3390/agronomy10050749
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发表时间：
2020-05-01
期刊：
影响因子：
3.7
通讯作者：
Maroto, Jose Vicente
中科院分区：
文献类型：
--
作者：
San Bautista, Alberto;Gromaz, Andrea;Maroto, Jose Vicente
尖烧是一种重要的疾病引起的钙缺乏，影响市场的苦苣菜。基因型、空气相对湿度和温度直接参与了根灼的发生。研究了不同种植制度和相对湿度对苦苣商品产量、硝酸盐积累和烧心发生的影响。两个品种进行了盆栽评价（“Cuartana”和“Natacha”），两种种植制度（温室和露天），并在两个不同的空气湿度水平（高水平：植物在一个塑料隧道下，用微型喷头提供额外的湿度，低水平：植物没有额外的湿度供应和塑料隧道外）在两年内（2013年和2014年）在不同的生长季节。硝酸盐含量测定反射法，并使用定性尺度评价尖烧。结果表明，温室内低湿度条件下，玉米茎尖病发生率高达40-60%。'Natacha'比'Cuartana'更易受尖烧（>20%的植株受影响），
Tipburn is an important disorder caused by a calcium deficiency that affects the marketability of endives. Genotype, air relative humidity, and temperature are directly involved in tipburn occurrence. Our study aimed to investigate the effect of cropping systems and relative humidity on the marketable yield, nitrate accumulation, and incidence of tipburn in endives. Two cultivars were evaluated in pots ('Cuartana' and 'Natacha'), two cropping systems (greenhouse and open-field), and in two different air humidity levels (high level: plants under a plastic tunnel with an extra supply of humidity with micro-sprinklers, and low level: plants without an extra supply of humidity and outside of a plastic tunnel) during two years (2013 and 2014) in different growing seasons. Nitrate content was determined by reflectometry, and tipburn was evaluated using a qualitative scale. Results showed that tipburn was favored under greenhouse with low humidity levels, with 40-60% plants affected. 'Natacha' was more susceptible to tipburn (>20% plants affected) than 'Cuartana' (