침수조건이 ‘캠벨얼리’ 포도나무의 생육, 뿌리활성과 수체 무기성분 함량에 미치는 영향 Effect of Waterlogging Conditions on the Growth, Root Activities and Nutrient Content of ‘Campbell Early’ Grapevine
침수시 근권내 용존산소공급이 포도나무의 생육과 수체 무기성분 함량에 미치는 영향을 구명하기 위하여 2년생 ‘캠벨얼리’ 유묘를 포트에 심고 포트위 10㎝까지 물을 채워 둔 단순침수구(WL), 침수상태에서 기포발생기로 용존산소를 공급한 통기처리구(WO), 주 2회 용존산소가 풍부한 물로 교환한 침수수교환구(WE), 침수시키지 않고 -40㎪ 토양수분장력 하에서 관수점을 제어한 대조구(NW)의 4처리 시험을 5주간 비가림하우스에서 수행하였다. 시험기간 동안 토양내 침수처리구들은 산화환원전위가 70-80±20㎷의 환원상태로, 비침수구는 520±60㎷의 산화상태로 관리되었다. 침수시 침수조건을 달리한 결과 뿌리활력은 용존산소공급구인 WO는 0.466㎎·g-1·h-1로서 비침수구인 NW의 0.496㎎·g-1·h-1과 비교할 때 유의차가 없었으나, 단순침수구인 WL은 0.157 ㎎·g-1·h-1로 유의하게 활력이 낮았다. 수체의 생육량에 있어서는 대조구인 NW의 생육이 왕성하여 침수처리구 간에는 초장과 엽수, 직경, 생체중과 건물중에서 유의성은 없었으나 WO가 WE와 WL에 비해 생육량이 다소 높았으며 생체중과 건물중에 있어서도 같은 경향을 나타냈다. 침수에 따른 수체내 무기성분 조성에 있어서는 엽과 엽병내 N 함량은 처리간 차이가 없었으나 P, K, Ca, Mg 함량은 침수구가 비침수구 보다는 낮았지만 WO 처리구가 WE와 WL 처리구보다 높게 나타났다. 반면 엽병내 Na 함량은 대조구에 비해 침수구에서 높게 나타났다. 이상의 결과를 통하여 살펴보면 침수시 기포발생을 통한 용존산소공급은 침수스트레스에 따른 생육 및 무기성분의 흡수저하를 다소 완화시키는 것을 알 수 있었으나 용존산소 공급방법에 따라 그 효과가 달리 나타날 수 있기 때문에 포도 재배에서 침수시 적절한 용존 산소공급 방법을 찾는 것이 중요할 것으로 판단된다.
침수시 근권내 용존산소공급이 포도나무의 생육과 수체 무기성분 함량에 미치는 영향을 구명하기 위하여 2년생 ‘캠벨얼리’ 유묘를 포트에 심고 포트위 10㎝까지 물을 채워 둔 단순침수구(WL), 침수상태에서 기포발생기로 용존산소를 공급한 통기처리구(WO), 주 2회 용존산소가 풍부한 물로 교환한 침수수교환구(WE), 침수시키지 않고 -40㎪ 토양수분장력 하에서 관수점을 제어한 대조구(NW)의 4처리 시험을 5주간 비가림하우스에서 수행하였다. 시험기간 동안 토양내 침수처리구들은 산화환원전위가 70-80±20㎷의 환원상태로, 비침수구는 520±60㎷의 산화상태로 관리되었다. 침수시 침수조건을 달리한 결과 뿌리활력은 용존산소공급구인 WO는 0.466㎎·g-1·h-1로서 비침수구인 NW의 0.496㎎·g-1·h-1과 비교할 때 유의차가 없었으나, 단순침수구인 WL은 0.157 ㎎·g-1·h-1로 유의하게 활력이 낮았다. 수체의 생육량에 있어서는 대조구인 NW의 생육이 왕성하여 침수처리구 간에는 초장과 엽수, 직경, 생체중과 건물중에서 유의성은 없었으나 WO가 WE와 WL에 비해 생육량이 다소 높았으며 생체중과 건물중에 있어서도 같은 경향을 나타냈다. 침수에 따른 수체내 무기성분 조성에 있어서는 엽과 엽병내 N 함량은 처리간 차이가 없었으나 P, K, Ca, Mg 함량은 침수구가 비침수구 보다는 낮았지만 WO 처리구가 WE와 WL 처리구보다 높게 나타났다. 반면 엽병내 Na 함량은 대조구에 비해 침수구에서 높게 나타났다. 이상의 결과를 통하여 살펴보면 침수시 기포발생을 통한 용존산소공급은 침수스트레스에 따른 생육 및 무기성분의 흡수저하를 다소 완화시키는 것을 알 수 있었으나 용존산소 공급방법에 따라 그 효과가 달리 나타날 수 있기 때문에 포도 재배에서 침수시 적절한 용존 산소공급 방법을 찾는 것이 중요할 것으로 판단된다.
This experiment was conducted to investigate the effect of waterlogging conditions on the growth, root activities and nutrient contents of two-year old ‘Campbell Early’ grapevine (Vitis labrusca L.) under waterlogged condition from June 15 to July 27, 2005. For the experiment, two-year old grapevine...
This experiment was conducted to investigate the effect of waterlogging conditions on the growth, root activities and nutrient contents of two-year old ‘Campbell Early’ grapevine (Vitis labrusca L.) under waterlogged condition from June 15 to July 27, 2005. For the experiment, two-year old grapevine seedlings were transplanted to 40 L pot with a sandy loam soil. Treatments consisted of non-waterlogging (control) with controlled at -40 ㎪ of soil water tension (NW), waterlogging with continuous aeration to supplying dissolved oxygen (WO), waterlogging with exchange of water twice a week (WE), and continuous waterlogging without aeration as well as exchange of water (WL). Eh of waterlogged soil (WO, WE and WL) maintained as reduction status of 70-80 ± 20 ㎷ but control was maintained as oxidation status of 520 ± 60 ㎷ during the experiment. The growth of shoot length, fresh and dry weight of grapevine by aeration (WO) was not significant among the waterlogged grapevine but had higher tendency than WE and WL treatments, except control. Nitrogen contents of leaf and petiole in waterlogged grapevines were not different among the treatments. P, K, Ca and Mg contents of waterlogged grapevine were reduced, but it’s of leaf and petiole was higher in WO than in WE. However, Na contents of petiole in waterlogged condition were significantly increased compared to control. Formazan content of roots was higher in WO (0.466 ㎎･g-1･h-1) than in WE and WL, but was not different in control (0.496 ㎎･g-1･h-1). These data show that supplying dissolved oxygen by aeration could alleviate water stress which reduced growth and nutrient content of grapevine caused exhausting dissolved oxygen by waterlogging. However, aeration effect varied with situation, thus searching for a proper method to supply dissolved oxygen in waterlogged condition is very important to control the waterlogged situation which occurred in our vineyard.
This experiment was conducted to investigate the effect of waterlogging conditions on the growth, root activities and nutrient contents of two-year old ‘Campbell Early’ grapevine (Vitis labrusca L.) under waterlogged condition from June 15 to July 27, 2005. For the experiment, two-year old grapevine seedlings were transplanted to 40 L pot with a sandy loam soil. Treatments consisted of non-waterlogging (control) with controlled at -40 ㎪ of soil water tension (NW), waterlogging with continuous aeration to supplying dissolved oxygen (WO), waterlogging with exchange of water twice a week (WE), and continuous waterlogging without aeration as well as exchange of water (WL). Eh of waterlogged soil (WO, WE and WL) maintained as reduction status of 70-80 ± 20 ㎷ but control was maintained as oxidation status of 520 ± 60 ㎷ during the experiment. The growth of shoot length, fresh and dry weight of grapevine by aeration (WO) was not significant among the waterlogged grapevine but had higher tendency than WE and WL treatments, except control. Nitrogen contents of leaf and petiole in waterlogged grapevines were not different among the treatments. P, K, Ca and Mg contents of waterlogged grapevine were reduced, but it’s of leaf and petiole was higher in WO than in WE. However, Na contents of petiole in waterlogged condition were significantly increased compared to control. Formazan content of roots was higher in WO (0.466 ㎎･g-1･h-1) than in WE and WL, but was not different in control (0.496 ㎎･g-1･h-1). These data show that supplying dissolved oxygen by aeration could alleviate water stress which reduced growth and nutrient content of grapevine caused exhausting dissolved oxygen by waterlogging. However, aeration effect varied with situation, thus searching for a proper method to supply dissolved oxygen in waterlogged condition is very important to control the waterlogged situation which occurred in our vineyard.
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