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2018 Vol.27, Issue 4 Preview Page
Bush Growth and Fruit Quality of ‘Duke’ Blueberry Influenced by Nutritional Composition in Unheated Plastic House

블루베리 ‘듀크’ 품종의 무가온 하우스 재배에서 질소비율 조절에 따른 수체생육 및 과실품질 변화

Mi Geon Cheon1
,
Yeong Bong Kim1
,
Kwang Pyo Hong1
,
H.M. Prathibhani C. Kumar2
,
Jin Gook Kim23*
천 미건1
,
김 영봉1
,
홍 광표1
,
헤 라쓰 무디얀셀라지2
,
김 진국23*
1Researrch and Development Bureau, Gyeongnam Agricultural Research & Extension Services, Jinju 52733, Korea
2Department of Horticulture, Gyeongsang National University, Jinju 52828, Korea
3Insti. of Agric. & Life Sci., Gyeongsang National University, Jinju 52828, Korea
1경남농업기술원 연구개발국
2경상대학교 농업생명과학대학 원예학과
3경상대학교 농업생명과학연구원
*Corresponding author: jgkim119@gnu.ac.kr
30 November 2018. pp. 319-325
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Abstract

The aim of the present study was to determine the influence of different fertilizer combinations on the growth, yield, and fruit quality of ‘Duke’ blueberry cultivar and the water quality of growth medium. The experiment was carried out with three year old ‘Duke’ blueberry bushes which were cultivated in containers (60×80×40 cm) filled with 130 L peat moss and 40 L pearlite (v/v). Sawdust was used as the mulch in growth containers. Three different fertilizer combinations (FC) i.e., FC-1 consisted with standard solution, FC-2 consisted with nitrogen reduced by 10% from FC-1, and FC-3 consisted with nitrogen reduced by 20% from FC-1 were tested while, the ground water used as the control. The effects of different fertilizer combinations on shoot diameter, shoot length, number of shoots, leaf length, SPAD value (the relative content of chlorophyll), berry weight, soluble solids content, titratable acidity, and yield per bush in ‘Duke’ blueberry were examined. Also, the effects of different fertilizer combinations on pH, EC, NH4 and NO3 in ‘Duke’ blueberry growth medium were monitored. The highest pH and lowest EC, NH4 and NO3 in growth medium was recorded with control treatment during the experiment period. The maximum shoot diameter (3.7 mm) and shoot length (35.7 cm) was recorded for the FC-1. Highest number of shoots (47%) were recorded from ‘Duke’ blueberry bushes supplemented with FC-1 compared to other treatments. The fertilizer combinations supplemented with nitrogen showed significant influence on leaf length and SPAD value compared to control ‘Duke’ blueberry bushes. However, the fruit quality attributes, i.e., berry weight, soluble solids content, and titratable acidity were not significant different among fertilizer treatments. The significantly highest yields per bush were recorded for FC-1, FC-2, and FC-3, as 2.2, 2.9, and 2.7 kg, respectively compared to control (0.2 kg). Although, the FC-1 was supplemented with highest nitrogen content it resulted low yield per bush while having high number of shoots and vigorous growth.

Keywords
fertilizer combination
hydroponics
vine growth
yield

블루베리의 재배면적은 증가추세이고 재배특성상 피트 모스에서 잘 자라며 관목인 점을 고려하여 용기재배를 많이 하고 있다. 또한 안정적으로 생산할 수 있는 재배 기술 개발이 요구되고 있다. 본 시험에서는 블루베리 양 액재배시 양액조성이 수체생육과 과실품질에 미치는 영 향을 알아보고자 수행하였다. 시험방법은 3년생 ‘듀크’ 품종을 대상으로 피트모스와 펄라이트의 용량을 각각 130L, 40L(v/v)로 하여 용기(60×80×40cm)에 식재하고 톱밥으로 멀칭한 후 2015년과 2016년에 3종의 조성이 다른 용액을 4월 중순부터 7월 하순까지 공급하여 수체 생육 및 과실품질을 조사하였다. 처리내용은 무시비구, 조성액 1(표준액), 조성액 2(표준액보다 10%질소 감소), 조성액 3(표준액보다 20%질소 감소)을 처리하였다. 블루 베리의 생육을 보면, 신초경은 표준액 처리가 3.7mm로 가장 컸으며, 신초장 또한 35.7cm로 가장 길었다. 신초 수는 표준액 처리가 질소를 20% 감소한 처리 대비 47%로 가장 많았다. 질소함량이 많은 처리에서 엽장과 엽폭이 길거나 넓어졌으며, 엽록소 함량도 증가하였다. 처리별 과실특성은 과립중, 고형물 함량, 산함량 등은 처리간 큰 차이가 없었으며, 수량은 질소를 10% 감소한 처리가 주당 2.9kg으로 가장 많았고, 표준액 처리가 2.2kg, 질소를 20% 감소한 처리가 2.7kg였다. 이는 질소 함량이 가장 많은 표준액 처리가 신초가 가장 많이 발 생하여 영양생장은 왕성했으나 꽃눈 착생은 감소해 수량 이 오히려 감소한 것으로 판단되었다. 따라서 블루베리 양액재배시 생육은 질소비율이 중간정도에서 가장 좋았 으며, 과실의 수량과 크기에서도 저농도나 중간농도가 고농도에 비하여 우수하였다.

키워드
비료배합
양액
수세
수량
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Information
  • Publisher :The Korean Society for Bio-Environment Control
  • Publisher(Ko) :(사)한국생물환경조절학회
  • Journal Title :Protected Horticulture and Plant Factory
  • Journal Title(Ko) :시설원예ㆍ식물공장
  • Volume : 27
  • No :4
  • Pages :319-325
  • Received Date : 2018-09-10
  • Revised Date : 2018-10-06
  • Accepted Date : 2018-10-08
  • DOI :https://doi.org/10.12791/KSBEC.2018.27.4.319
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