• 한국토양비료학회지
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• 제46권6호
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• pp.652-658
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• 2013

A huge number of greenhouse soils in Korea have accumulated mineral elements which induce many nutritional and pathological problems. The present study was performed to the effects of the reduced fertilization on plant growth, and uptake and partitioning of minerals (N, P, K) and soluble carbohydrates using highly minerals-accumulated farmer's greenhouse soil. On the basis of the recommended application for tomato crop, the application rates of N, P and K were 110(50%)-5.2(5%)-41.5(35%)kg $ha^{-1}$, respectively, using Hoagland's nutrient solution. Tomato growth rates during the whole experiment were not significant between treatments, but it was found that a decrease in daily growth represented after 60 days of treatment (DAT). The reduced application led to a drastic decrease in the concentration of N, P and K in fruits, and, thus, this resulted in lower uptake after 40 DAT. The lower phloem export and utilization of soluble carbohydrates caused an accumulation of extra-carbohydrates in leaves, stems and fruits in the reduced application. The reduced fertilization induced the capture of N, P and K in leaves and of soluble carbohydrates in stems compared to the conventional application. In this study, we suggest that it is possible to delay the first fertigation time in minerals-accumulated soils without an adverse impact on crop growth, but it is necessary to regularly monitor mineral status in soil to ensure a balanced uptake, synthesis and partitioning of minerals and carbohydrates.

• 한국토양비료학회지
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• 제49권6호
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• pp.682-688
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• 2016

Food waste has recognized one of useful sources for potentially agricultural application to supply organic matter and nutrients in arable soil. However, there was little information on application of food waste compost related to the maturity and NaCl content in arable soil. This study evaluated the effect of food waste compost application on yield and fertility in soil under flooding and upland condition. The yields in rice and pepper cultivation decreased with increasing the rate of food waste compost application in soil (p<0.05). Maximum yields of rice ($49.0g\;plant^{-1}$) and pepper ($204g\;plant^{-1}$) were shown at 10 and $30Mg\;ha^{-1}$ of food waste compost application, respectively. The N, P, and K contents in grain and plant residues increased by the application of food waste compost, there was no difference on Na/K ratio in plant tissue among the treatments. Application of food waste compost resulted in the increase of pH, EC, TC, available P contents in soil after crop harvest, especially, which was shown the increase of the CEC and exchangeable sodium percentage (ESP) contents in irrespective of water condition. In conclusion, application of food waste compost in soil was effective on the supply of the organic matter and nutrient. However, it might need caution to apply food waste compost for sustainable productivity in arable soil because of potential Na accumulation.

• 한국자원식물학회지
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• 제20권4호
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• pp.309-311
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• 2007

남부지방에서 답리작으로 휴경답의 제고를 위하여 골풀의 시비량을 구명코자 시험하였던바 묘상에서의 시비량은 $N-P_{2}O_{5}-K_{2}O=60-30-60kg/10a$의 양으로 육성한 묘들은 본답에 가서도 수량 및 수량구성요소가 우수하였다. 따라서 골풀의 묘상 시비량은 $N-P_{2}O_{5}-K_{2}O=60-30-60kg/10a$ 이여야 된다고 생각된다.

• 한국토양비료학회지
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• 제40권6호
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• pp.482-487
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• 2007

농업과학기술원에서 보유하고 있는 국내 최장기 연구용 논토양에서 1954년부터 2003년까지 50년간 3요소 화학비료와 유안 및 요소비료를 장기간 연용 했을 때 벼의 생산력과 토양의 이화학적 특성에 미치는 영향을 조사한 결과는 다음과 같다 정조수량을 3요소구의 수량지수 100에 대하여 유안단용구 84, 요소단용구 81, 무비구 62이었으며 관개수질에 따라 벼의 생산량 차이가 컸다. 벼의 양분흡수량은 3요소구에 비하여 유안과 요소단용구에서 T-N은 86~75, $P_2O_5$는 79~82, $K_2O$는 64~58, $SiO_2$은 94~90%로 흡수량이 유의성 있게 적었다. 토양의 용적밀도는 무비구, 유안단용구, 요소단용구보다 3요소구에서 유의하게 낮아지는 반면, CEC는 증가되었다. 토양의 pH는 시험전(1954) 5.2에 비하여 전 처리구에서 높았으며 무비구는 6.00, 요소단용구 5.93, 3요소구 5.93, 유안단용구 5.40순으로 저하되었다. 토양의 유효인산함량은 인산비료를 매년 $70kg\;ha^{-1}$를 시용하고 벼를 재배할 경우 유효인산의 증가량은 $2.5mg\;kg^{-1}\;yr^{-1}$이었고, 인산비료를 시용하지 않으면 $1.8mg\;kg^{-1}\;yr^{-1}$씩 감소되었다.

• 한국유기농업학회지
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• 제28권4호
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• pp.615-626
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• 2020

하계사료작물로 케나프를 재배할 시에 유기 및 화학비료의 질소공급원과 수확시기를 달리하였을 때 케나프의 생산성과 양질의 조사료를 얻기 위해 적정 질소시용수준과 수확시기를 구명하고자 실시되었다. 질소공급원에 따른 케나프의 건물수량은 화학비료 처리 구가 다소 높았지만, 유기질비료를 ha 당 200~250 kg의 수준에서는 화학비료 처리 구와 유의한 차이가 인정되지 않았고 사료가치 특히 조단백질과 TDN 함량은 오히려 유기질비료 처리 구에서 유의하게 높게 나타나(p<0.05), 반추동물에게 양질의 조사료 공급원으로 이용하고자 케나프가 재배된다면 유기질비료가 화학비료를 대체할 수 있음을 시사하였다. 한편 수확시기에 따른 건물수량은 100일째가 다른 수확시기보다 유의하게 높았지만 100~110일 수확시기가 수량구성요인 중 잎의 비율이 줄기보다도 높았고 사료가치 중 조단백질과 TDN 함량이 다른 수확시기보다 높게 나타났으며 ADF와 NDF 함량은 크게 감소하였다(p<0.05). 본 연구의 결과 특히 건물수량과 사료가치를 비교해 볼 때 적절한 질소공급원으로 유기질비료를 시용 시에는 ha당 200~250 kg 정도가 적절하고 수확시기는 100~110일이 적합하다고 사료된다.

• Asian-Australasian Journal of Animal Sciences
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• 제22권5호
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• pp.732-739
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• 2009

Pig slurry is a good soil amendment not only because of its high organic matter content, but also because of its ability to provide various nutrients. The objective of this study was to estimate the influence of raw and processed pig slurry application on pot soil over chemical fertilizer and non-amended control soil. Change in the chemical parameters (pH, organic matter (OM), organic carbon (OC), macro and micronutrients) and microbial mass of the treated soils were monitored over 30 to 90 days. Pot soil was treated with the recommended dose of pig slurry and chemical fertilizer, and was sampled after 30, 60 and 90 days of incubation. The least significanct difference (p<0.05) was observed on Fe, Cu, Zn, available P and K between treatments. All treatments increased N, P and K content and microbial mass of soil over control soil. Interestingly, no significant effects were detected on OM, OC, total bacteria, actinomycetes and fungi mass in soil irrespective of treatments given. However fungal and bacterial counts, as well as available nutrients, were found to be higher in processed slurry (PS)-treated soil compared to other soils. In general a significant correlation existed between the fungal count and OM, OC, Zn, T Kjeldahl N (TKN), available P and K of soil. A strong negative correlation was observed between pH and Fe in soil. This study clearly demonstrated that the use of processed manure as a fertilizer could be a key for sustainable livestock agriculture.

• 한국토양비료학회지
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• 제49권4호
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• pp.327-334
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• 2016

In order to compare phosphorus (P) behavior of livestock manure compost (LMC) and chemical fertilizer (CF) applied to the sea-reclaimed land soils, incubation experiments were conducted for five weeks. Four soils differing textural classes, sandy loam and clay loam, and electric conductivity (EC) value, high and low, were applied with CF and LMC. LMC was applied at the level of 0, 1, 2, and 3% on the soil weight basis and CF was applied at the same levels of P as LMC. The results showed that increase of P application rate of CF and LMC led to linearly increase available $P_2O_5$ and $0.01M\;CaCl_2$ extractable P contents regardless of soil texture and EC. However, 0.01M $CaCl_2$ extractable P from soil applied with CF was significantly higher than with LMC. Correlation analysis between $0.01M-CaCl_2$ extractable P and fractionated P by different extraction methods showed that $0.01M-CaCl_2$ extractable P positively correlated with KCl-P (soluble and exchangeable P) and HCl-P (Ca and Mg bound P). However, NaOH-P (Fe and Al bound P and organic P) and residual P was adverse. The amount of NaOH-P significantly influenced to the amount of 0.01M $CaCl_2$ extractable P of CF and LMC in the soils. The application of LMC at sandy loam soil could be carried out in the consideration of nutrient leaching and crop uptake.

• Journal of Plant Biology
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• 제19권2호
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• pp.37-40
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• 1976

The experiment designed to obtain information relative to the favourable levels to apply N.P.K fertilizer was conducted at the hop garden of College of Agriculture, S.N.U. in 1975. The varieties used were 1-year-old Cascade, Hallertau and Shinshuwase. The design of the experiment was a split plot design with 3 replications. Yields were recorded as fresh weight of harvested cones in gram per split plot. The results obtained from the experiment were as follows: 1. The results from analysis of the data for 3 varieties indicated that significant increase in yield were found due to the application of 46g N, 20g P2O5 and 60kg K2O per plant, although higher level thn the above caused a remarkable reduction of yield. 2. The individual fresh weight of harvested cones was significantly increased with application of nitrogen, phosphorus and potash, regardless of fertilizer levels. 3. Analysis of variance for yields showed that there were no significant interaction between fertilizer level and variety, i.e., all varieties used might require the same fertilizer level.

• 한국토양비료학회지
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• 제40권2호
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• pp.156-163
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• 2007

본 연구는 혼합유기질비료를 액비화할 때 액비화 효율을 증진시키기 위하여 폭기시간과 유기질비료 농도에 따른 무기성분의 특성변화를 조사하였다. 혼합 유기질비료는 참깻묵, 쌀겨, 어분, 혈분 등의 유기질 재료와 일라이트, 패화석 등으로 이루어져 있으며 약 2개월간의 발효과정을 거쳤고 N, $P_2O_5$, $K_2O$ 및 유기물함량은 각각 $23.0g\;kg^{-1}$, $17.0g\;kg^{-1}$, $23.9g\;kg^{-1}$, $290g\;kg^{-1}$이었다. 폭기시간은 일 2시간, 8시간, 연속 폭기 및 무폭기의 처리를 두었으며 물량에 대한 유기질비료 농도는 10%로 하였다. 유기질비료 농도에 따른 특성변화는 전체 물 함량에 대한 유기질비료 농도를 5%, 10% 및 20%로 하고 일 2시간씩 폭기를 하였다. 액비제조 기간이 경과함에 따라 폭기시간에 관계없이 pH, EC 및 $NH_4-N$ 농도는 증가하였다. 일 2시간 폭기한 처리구에서 액비제조 10일 후의 N, $P_2O_5$ 및 $K_2O$ 농도는 각각 $646mg\;kg^{-1}$, $68.1mg\;kg^{-1}$, $453mg\;kg^{-1}$으로 침출률은 각각 27.6%, 4.0% 및 18.9%이었으며 일 8시간 폭기 및 연속폭기조와 유의적인 차이가 없었다. 연속폭기조에서 호기성 세균, 포자형성 세균 및 사상균의 생균수가 다른 처리구보다 많았다. 물에 대한 유기질비료의 농도를 증가시키면 EC, $NH_4-N$ 및 무기성분 함량은 증가하였으나 유기질비료의 침출률은 감소하였다. 액비제조 10일 후 유기질비료 20% 처리구의 N, $P_2O_5$ 및 $K_2O$ 농도는 각각 $1,140mg\;kg^{-1}$, $35.4mg\;kg^{-1}$, $544mg\;kg^{-1}$이었고 침출률은 각각 24.8%, 2.4% 및 13.6%이었다. 유기질비료 농도의 증가는 포자형성 세균과 Pseudomonas spp. 균의 생균수를 증가시켰다.

• 한국산학기술학회:학술대회논문집
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• 한국산학기술학회 2004년도 추계학술대회
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• pp.96-98
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• 2004

At the previous papers, we showed that K2O-CaO-P2O5 glasses had a solubility in air so that they could be used for glass fertilizer. In this work, we fabricated the Eco-glass fertilizer containing trace elements such as B, Mg, Zn, Fe, Cu, Co, and Mo by a melt-quenching process and the dissolution properties of these glasses were investigated with pH meter and ICP analyzer. In case of the glasses containing the trace elements, effect of trace elements on the dissolutions is not obvious and ignorant the stability of mother glass. Also, the dissolution amounts of each trace elements depend on the mother glass composition and the quantity of each trace element, and mother glasses determined the dissolving velocity of chemical elements.