{"title":"Nutritional status of commercial apple orchards in the Åland Islands","authors":"R. Dris, R. Niskanen","doi":"10.1080/09064719809362486","DOIUrl":null,"url":null,"abstract":"Soil, leaf and fruit samples were collected from nine apple orchards in the Aland Islands during 1993–95. Early, intermediate and late apple cultivars were studied. Leaves were sampled three times during fruit development. In the experimental orchards, mean soil pH was 7.0 and the concentrations of extractable nutrients (mg l−1 soil) were: P 30; K 216; Ca 6000; Mg 180. The mean values of nutrients in the leaves (% DM) were: N 2.2; P 0.22; K 1.7; Ca 1.7; Mg 0.22, and in the fruit (mg 100 g−1 FW): N 47; P 10; K 125; Ca 5; Mg 5. During the sampling period (22 July‐26 August), N, P and K in the leaves decreased and Ca increased. Nutrient levels in the leaves were satisfactory, but N, P and K concentrations in the fruit were low. There were significant linear correlations between the corresponding fruit and leaf nutrients, positive for N, P, K and Mg and negative for Ca. Leaf Mg and fruit K correlated significantly with the corresponding soil nutrients. P and Ca in leaves and fruits correlated with soil pH mor...","PeriodicalId":40817,"journal":{"name":"Acta Agriculturae Scandinavica Section B-Soil and Plant Science","volume":null,"pages":null},"PeriodicalIF":1.7000,"publicationDate":"1998-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"8","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Agriculturae Scandinavica Section B-Soil and Plant Science","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1080/09064719809362486","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"AGRONOMY","Score":null,"Total":0}
引用次数: 8
Abstract
Soil, leaf and fruit samples were collected from nine apple orchards in the Aland Islands during 1993–95. Early, intermediate and late apple cultivars were studied. Leaves were sampled three times during fruit development. In the experimental orchards, mean soil pH was 7.0 and the concentrations of extractable nutrients (mg l−1 soil) were: P 30; K 216; Ca 6000; Mg 180. The mean values of nutrients in the leaves (% DM) were: N 2.2; P 0.22; K 1.7; Ca 1.7; Mg 0.22, and in the fruit (mg 100 g−1 FW): N 47; P 10; K 125; Ca 5; Mg 5. During the sampling period (22 July‐26 August), N, P and K in the leaves decreased and Ca increased. Nutrient levels in the leaves were satisfactory, but N, P and K concentrations in the fruit were low. There were significant linear correlations between the corresponding fruit and leaf nutrients, positive for N, P, K and Mg and negative for Ca. Leaf Mg and fruit K correlated significantly with the corresponding soil nutrients. P and Ca in leaves and fruits correlated with soil pH mor...
期刊介绍:
Acta Agriculturæ Scandinavica Section B publishes original research in applied soil and plant science with special attention given to to crop production in agri- and horticultural systems. We welcome manuscripts dealing with:
Climate smart and sustainable crop production systems
Water and nutrient efficiency
Soil conservation and productivity
Precise agriculture systems
Applications of bio- and nanotechnology
Digitalisation and robotics
Soil-plant interactions
Acta Agriculturæ Scandinavica, Section B – Soil & Plant Science forms part of a series of titles published on behalf of the Nordic Association of Agricultural Science (NJF). The series also includes Section A - Animal Science .