Abstract
농경지에 작물재배를 위한 양분재료의 과다한 투여는 주변 수계로의 양분유출을 증가시킬 수 있다. 고추재배시 사용되는 양분재료는 화학비료, 우분퇴비, 돈분퇴비 등이 대표적이다. 볏짚은 벼 재배의 부산물로 밭 농사에서 잡초발생 억제, 토양수분 보존, 유기물 재료로 널리 사용된다. 본 연구는 노지 고추 재배에서 밭 고랑을 볏짚으로 피복할 때 강우로 발생하는 표면 유출수에 의한 양분유출 특성을 파악하기 위해 수행하였다. 시험구는 양분재료를 기준으로 하여 화학비료, 우분퇴비, 돈분퇴비로 구분하였고 양분투입량은 토양검정 시비량에 준하여 처리하였다. 각각의 시험구는 화학비료 또는 우분퇴비, 돈분퇴비를 시용한 후 볏짚으로 덮은 경우(피복 처리구)와 덮지 않은 경우(무피복구)로 구분하였다. 화학비료 처리구와 우분퇴비 처리구의 볏짚 고랑 피복 처리는 무피복구 보다 T-N (총질소)의 유출이 각각 $1.4kg\;ha^{-1}$, $2.1kg\;ha^{-1}$ 감소하였다. 반면에 화학비료 처리구와 우분퇴비 처리구, 돈분퇴비 처리구의 볏짚고랑 피복 처리는 무피복구 보다 T-P (총인)의 유출이 각각 $2.1kg\;ha^{-1}$, $2.1kg\;ha^{-1}$, $0.2kg\;ha^{-1}$ 증가하였다. 볏짚은 질소 0.4 %, 인산을 0.3 % 함유하고 있고 증류수에 볏짚을 담근 후 3주일 내에 인산 성분이 유출되므로 T-P의 유출은 고랑을 피복한 볏짚에서 기원한 것으로 추정된다. 무피복구에 비하여 고랑 볏짚 피복구는 잡초발생이 줄었다. 그러나 붉은 고추의 수확량은 무피복구와 볏짚피복구 간에 유의한 차이를 나타내지 않았다. 결론적으로, 고추밭 고랑을 볏짚으로 과다하게 피복하면 T-P의 유출을 유발할 수 있으므로 고랑을 피복하는데 적정한 볏짚량을 산정하기 위한 추가적인 연구가 필요하다고 판단되었다. Excessive application of nutrient supplement on the upland soil may increase the amount of discharge to surrounding water systems. The chemical fertilizer (CF), cow manure compost (CMC), and pig manure compost (PMC) are used as a nutrient supplement for cultivation of red pepper. Rice straws are widely used as a soil covering material in order to reduce weed occurrence, to protect soil moisture, and to supply organic matter in upland soil. This study was conducted to evaluate the furrow covering effect with rice straw on nutrient discharge in upland soil used for red pepper cultivation. The experimental plots of nutrient supplement were consisted of CF, CMC, and PMC and the amount of nutrient application were as recommended amount after soil test for red pepper cultivation. Each nutrient supplement treatment plot has no furrow covering (CFC) as a control and furrow covering with rice straw (FCS), respectively. Furrow covering with rice straw (FCS) of CF treatment and CMC treatment reduced the amount of T-N(total nitrogen) discharge by $1.4kg\;ha^{-1}$, $2.1kg\;ha^{-1}$, respectively, compared to control. While the amount of T-P(total phosphorus) discharge of the furrow covering with rice straw of CF, CMC, and PMC increased by $2.1kg\;ha^{-1}$, $2.1kg\;ha^{-1}$, and $0.2kg\;ha^{-1}$, respectively, compared to control. The phosphorus and nitrogen content of straw were 0.4 % and 0.3 % respectively. In addition, in three week the phosphorus was eluted from the straw which soaked in distilled water. Thus, it was assumed that T-P discharging originated from rice straw which applied as a furrow covering material. The furrow covering with rice straw reduced weed occurrence compared to control. But production of fresh red pepper was not influenced significantly by furrow covering with rice straw. In conclusion, excessive furrow covering with rice straw could induce T-P discharge from upland soil used for red pepper cultivation. Further studies are needed to evaluate the appropriate amount of rice straw as a furrow covering material.
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Claims 10
Claim · model-written summary
Straw furrow cover reduced total nitrogen discharge by $1.4kg\;ha^{-1}$ under chemical fertilizer.
- Treatment
- Furrow covering with rice strawe0
- Outcome
- T-N(total nitrogen) dischargee0
- Direction
- reducede0
- Value
- $1.4kg\;ha^{-1}$e0
- Qualifier
- CF treatmente0
- Comparator
- controle0
Not reportedTaxon
Verbatim
e0“Furrow covering with rice straw (FCS) of CF treatment and CMC treatment reduced the amount of T-N(total nitrogen) discharge by $1.4kg\;ha^{-1}$, $2.1kg\;ha^{-1}$, respectively, compared to control”
Claim · model-written summary
Straw furrow cover reduced total nitrogen discharge by $2.1kg\;ha^{-1}$ under cow manure compost.
- Treatment
- Furrow covering with rice strawe0
- Outcome
- T-N(total nitrogen) dischargee0
- Direction
- reducede0
- Value
- $2.1kg\;ha^{-1}$e0
- Qualifier
- CMC treatmente0
- Comparator
- controle0
Not reportedTaxon
Verbatim
e0“Furrow covering with rice straw (FCS) of CF treatment and CMC treatment reduced the amount of T-N(total nitrogen) discharge by $1.4kg\;ha^{-1}$, $2.1kg\;ha^{-1}$, respectively, compared to control”
Claim · model-written summary
Straw cover increased total phosphorus discharge by $2.1kg\;ha^{-1}$ under chemical fertilizer.
- Treatment
- furrow covering with rice strawe0
- Outcome
- T-P(total phosphorus) dischargee0
- Direction
- increasede0
- Value
- $2.1kg\;ha^{-1}$e0
- Qualifier
- CFe0
- Comparator
- controle0
Not reportedTaxon
Verbatim
e0“the amount of T-P(total phosphorus) discharge of the furrow covering with rice straw of CF, CMC, and PMC increased by $2.1kg\;ha^{-1}$, $2.1kg\;ha^{-1}$, and $0.2kg\;ha^{-1}$, respectively, compared to control”
Claim · model-written summary
Straw cover increased total phosphorus discharge by $2.1kg\;ha^{-1}$ under cow manure compost.
- Treatment
- furrow covering with rice strawe0
- Outcome
- T-P(total phosphorus) dischargee0
- Direction
- increasede0
- Value
- $2.1kg\;ha^{-1}$e0
- Qualifier
- CMCe0
- Comparator
- controle0
Not reportedTaxon
Verbatim
e0“the amount of T-P(total phosphorus) discharge of the furrow covering with rice straw of CF, CMC, and PMC increased by $2.1kg\;ha^{-1}$, $2.1kg\;ha^{-1}$, and $0.2kg\;ha^{-1}$, respectively, compared to control”
Claim · model-written summary
Straw cover increased total phosphorus discharge by $0.2kg\;ha^{-1}$ under pig manure compost.
- Treatment
- furrow covering with rice strawe0
- Outcome
- T-P(total phosphorus) dischargee0
- Direction
- increasede0
- Value
- $0.2kg\;ha^{-1}$e0
- Qualifier
- PMCe0
- Comparator
- controle0
Not reportedTaxon
Verbatim
e0“the amount of T-P(total phosphorus) discharge of the furrow covering with rice straw of CF, CMC, and PMC increased by $2.1kg\;ha^{-1}$, $2.1kg\;ha^{-1}$, and $0.2kg\;ha^{-1}$, respectively, compared to control”
Claim · model-written summary
Phosphorus was eluted from rice straw soaked in distilled water within three weeks.
- Treatment
- straw which soaked in distilled watere0
- Outcome
- phosphorus was elutede0
- Qualifier
- in three weeke0
Not reportedTaxon
Verbatim
e0“in three week the phosphorus was eluted from the straw which soaked in distilled water”
Claim · model-written summary
The authors attribute phosphorus discharge to straw used as furrow covering.
Not reportedTaxon
Verbatim
e0“it was assumed that T-P discharging originated from rice straw which applied as a furrow covering material”
Claim · model-written summary
Rice straw furrow cover reduced weed occurrence relative to control.
- Treatment
- furrow covering with rice strawe0
- Outcome
- weed occurrencee0
- Direction
- reducede0
- Comparator
- controle0
Not reportedTaxonInteractor
Verbatim
e0“The furrow covering with rice straw reduced weed occurrence compared to control”
Claim · model-written summary
Fresh red pepper production was not significantly affected by straw furrow cover.
- Taxon
- red pepper
Capsicum annuum var. annuume0 - Treatment
- furrow covering with rice strawe0
- Outcome
- production of fresh red peppere0
- Direction
- not influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“production of fresh red pepper was not influenced significantly by furrow covering with rice straw”
Claim · model-written summary
The authors recommend further study of the appropriate straw covering amount.
- Outcome
- appropriate amount of rice straw as a furrow covering materiale0
Not reportedTaxon
Verbatim
e0“Further studies are needed to evaluate the appropriate amount of rice straw as a furrow covering material”
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