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Kang, Heejoo,Lee, Inseok,Goh, Sangwook,Kang, Seokbeom Korean Society of Food and Agricultural Informatio 2014 Agribusiness and Information Management Vol.6 No.1
The purpose of this study is to develop the growth prediction model that can predict growth and development information influencing on the production of citrus fruits. The growth model was developed to predict the floral leaf ratio, number of fruit sets, fruit width, and overweight fruits depending on the main period of growth and development by considering the weather factors because the fruit production is influenced by weather depending on the growth and development period. To predict the outdoor-grown citrus fruit production, the investigation result for the standard farms is used as the basic data; in this study, we also understood that the influence of weather factors on the citrus fruit production based on the data from 2004 to 2013 of the outdoor-grown citrus fruit observation report in which the standard farms were targeted by the Agricultural Research Service and suggested the growth and development information prediction model with the weather information as an independent variable to build the observation model. The growth and development model for outdoor-grown citrus fruits was assumed by using the Ordinary Least Square method (OLS), and the developed growth prediction model can make a prediction in advance with the weather factors prior to the observation investigation for the citrus fruit production. To predict the growth and development information of the production of citrus fruits having a great ripple effect as a representative crop in Jeju agriculture, the prediction result regarding the production applying the weather factors depending on growth and development period could be applied usefully.
Heejoo Kang,Inseok Lee,Sangwook Goh,Seokbeom Kang 한국농식품정보과학회 2014 Agribusiness and Information Management Vol.6 No.1
The purpose of this study is to develop the growth prediction model that can predict growth and development information influencing on the production of citrus fruits. The growth model was developed to predict the floralleaf ratio, number of fruit sets, fruit width, and overweight fruits depending on the main period of growth and development by considering the weather factors because the fruit production is influenced by weather depending on the growth and development period. To predict the outdoor-grown citrus fruit production, the investigation result for the standard farms is used as the basic data; in this study, we also understood that the influence of weather factors on the citrus fruit production based on the data from 2004 to 2013 of the outdoor-grown citrus fruit observation report in which the standard farms were targeted by the Agricultural Research Service and suggested the growth and development information prediction model with the weather information as an independent variable to build the observation model. The growth and development model for outdoor-grown citrus fruits was assumed by using the Ordinary Least Square method (OLS), and the developed growth prediction model can make a prediction in advance with the weather factors prior to the observation investigation for the citrus fruit production. To predict the growth and development information of the production of citrus fruits having a great ripple effect as a representative crop in Jeju agriculture, the prediction result regarding the production applying the weather factors depending on growth and development period could be applied usefully.
동해피해 부지화 감귤나무의 과실특성과 피해과실 간이 판별법
강석범 ( Seokbeom Kang ),문영일 ( Youngeel Moon ),한승갑 ( Seunggab Han ),이은지 ( Eunji Lee ),이혜진 ( Hyejin Lee ),최영훈 ( Yeonghun Choi ) 한국환경농학회 2016 한국환경농학회 학술대회집 Vol.2016 No.-
지구온난화에 의한 엘리뇨의 세력 강화로 겨울철 한파가 발생하여 제주지역 감귤재배지에 많은 피해가 나타났다. 특히 무가온 하우스 재배를 하는 만감류 과실들은 수확을 앞두고 과실이 어는 동해피해를 받아 그 피해규모가 컸다. 이러한 과실들에 대해 동해피해를 받았을 때 과실이 정상적인 과실인지 아니면 동해피해를 받은 과실인지를 조기에 판별하는 것은 매우 중요한 대처방안 중의 하나이다. 따라서 본 연구는 동해피해를 받은 과실의 특성을 쉽게 판단할 수 있는 방법을 찾고 동해피해 받은 과실의 특성을 검토하여 나무에 두었을 때 정상적으로 회복이 가능한지 여부를 조사하기 위하여 수행하였다. 조사에 이용된 농촌진흥청 감귤연구소 무가온 하우스에서 재배되는 부지화 16년생 감귤나무의 과실들은 2016년 1월 25일 - 7.7℃의 저온에 장기간 노출되면서 다른 제주지역의 무가온 하우스의 감귤나무의 과실들처럼 저온(동해)피해를 받았다. 동해피해를 받은 과실은 사양내가 결빙되어 과실의 양낭은 동해 초기에는 팽창하여 부풀어 오르지만 시간이 지나면서 사양세포들이 깨져 과실내 양낭은 젖은 상태를 나타내며 과실을 쪼개었을 때 과즙이 양낭들 사이에서 흘러나오는 것을 보게 된다. 따라서 재배 현장에서는 재배지의 과실이 동해피해를 받았는지 유무를 확인할 때 과실을 쪼개어 양낭의 상태를 확인하는 방법으로 쉽게 동해피해 발생 유무를 확인할 수 있다. 한편 이렇게 동해피해를 받은 과실을 수상에 두고 회복 가능성 여부를 확인한 결과 피해 발생이후 4주간 조사를 하여도 과실의 상태가 개선되는 것을 확인 할 수 없었다. 그리고 피해받은 과실은 과즙이 마름증상이 심해져 시간이 지날수록 양낭이 쪼그라들어 말라가는 것을 확인하게 되었다. 동해는 감귤류에서는 -3℃ 이하의 저온에 노출되었을 때 발생되는 피해중의 하나이다. 그러나 한번 피해가 발생된 과실은 수상에 두어도 정상적인 회복이 어렵다는 것을 본 조사를 통해 확인하였다.