Search Results - "Joseph Adu-Gyamfi"

Tracing N-Nutrient and Organic Carbon Sources in Surface Water of Nhue River Sub-Catchment in Vietnam Using Stable Isotope Fingerprinting and Related Techniques by Nhan, Dang Duc, Tuoi, Nguyen Thi, Anh, Ha Lan, Kien, Mai Duc, Hoai, Vu, Joseph, Adu-Gyamfi, Heng, Lee

“…Concentrations of NH 4 + , NO 3 − , PO 4 3− , Na + , K + , Ca 2+ , Mg 2+ , F − , Cl − , and SO 4 2− and the isotopic compositions (δ 2 H and δ 18 O) in surface…”
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High temperature effects on photosynthate partitioning and sugar metabolism during ear expansion in maize ( Zea mays L.) genotypes by Suwa, Ryuichi, Hakata, Hiroaki, Hara, Hiromichi, El-Shemy, Hany A., Adu-Gyamfi, Joseph J., Nguyen, Nguyen Tran, Kanai, Synsuke, Lightfoot, David A., Mohapatra, Pravat K., Fujita, Kounosuke

“…Short hot and dry spells before, or during, silking have an inordinately large effect on maize ( Zea mays L.; corn) grain yield. New high yielding genotypes…”
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Biological nitrogen fixation and nitrogen and phosphorus budgets in farmer-managed intercrops of maize-pigeonpea in semi-arid southern and eastern Africa by Adu-Gyamfi, Joseph J, Myaka, Fidelis A, Sakala, Webster D, Odgaard, Rie, Vesterager, Jens M, Høgh-Jensen, Henning

“…Biological nitrogen fixation (BNF), nitrogen (N), and phosphorus (P) imports-exports budgets were estimated at four locations, each with 20 farmer-managed…”
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Yields and accumulations of N and P in farmer-managed intercrops of maize-pigeonpea in semi-arid Africa by Myaka, F.M, Sakala, W.D, Adu-Gyamfi, J.J, Kamalongo, D, Ngwira, A, Odgaard, R, Nielsen, N.E, Hogh-Jensen, H

“…Maize (Zea mays L.) is a major staple food in Sub-Saharan Africa but low soil fertility, limited resources and droughts keep yields low. Cultivation of maize…”
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Novel sediment source fingerprinting quantifying erosion-induced total nitrogen and total phosphorus outputs from an intensive agricultural catchment, North China by Hanqing Yu, Joseph Adu-Gyamfi, Suarau Odutola Oshunsanya, Adrian Chappell, Wenxiang Liu, Yu Zheng, Tingting Xue, Lee Heng

“…Intensive farming is a primary cause of increased sediment and associated nitrogen (N) and phosphorus (P) loads in surface water systems. Determining their…”
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Nitrogen Utilization from Ammonium Nitrate and Urea Fertilizer by Irrigated Sugarcane in Brazilian Cerrado Oxisol by Furtado da Silva, Nelmício, Cabral da Silva, Edson, Muraoka, Takashi, Batista Teixeira, Marconi, Antonio Loureiro Soares, Frederico, Nobre Cunha, Fernando, Adu-Gyamfi, Joseph, Cavalcante, Wendson Soares da Silva

“…Sugarcane is the most promising among renewable biofuel-producing crops. An adequate availability of water and nutrients, especially nitrogen (N), is of utmost…”
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The effect of phosphorus deficiency on nutrient uptake, nitrogen fixation and photosynthetic rate in mashbean, mungbean and soybean by Chaudhary, Muhammad Iqbal, Adu-Gyamfi, Joseph J., Saneoka, Hirofumi, Nguyen, Nguyen Tran, Suwa, Ryuichi, Kanai, Shynsuke, El-Shemy, Hany A., Lightfoot, David A., Fujita, Kounosuke

“…Phosphorous (P) fertilization is the major mineral nutrient yield determinant among legume crops. However, legume crops vary widely in the ability to take up…”
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Genotypic variability of pigeonpea in distribution of photosynthetic carbon at low phosphorus level by Fujita, Kounosuke, Kai, Yoshito, Takayanagi, Miki, El-Shemy, Hany, Adu-Gyamfi, Joseph J, Mohapatra, Pravat K

“…Pigeonpea ( Cajanus cajan L. Millsp.) is an important grain protein crop, which thrives in the P-deficient soils of tropical and subtropical Asia. The varietal…”
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Tracing sulfate sources in a tropical agricultural catchment with a stable isotope Bayesian mixing model by Saka, David, Antwi, Eric Ofosu, Skrzypek, Grzegorz, Adu-Gyamfi, Joseph, Heng, Lee, Attiogbe, Francis

“…Sulfate (SO42−) is an essential anion in drinking water and a vital macronutrient for plant growth. However, elevated sulfate levels can impact ecosystem or…”
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Land management policy shift influenced seasonal variation of erosion-induced nitrogen and phosphorus outputs from intensive agricultural catchment by Lu, Zhaoyang, Yu, Hanqing, Adu-Gyamfi, Joseph, Wang, Hongyu, Chappell, Adrian, Oshunsanya, Suarau Odutola, Liu, Wenxiang, Xue, Tingting, Heng, Lee

“…A shift in policy to intensive agricultural production and land management often leads to excessive fertilizer application and accelerated erosion with…”
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Disentangling nitrate pollution sources and apportionment in a tropical agricultural ecosystem using a multi-stable isotope model by Saka, David, Adu-Gyamfi, Joseph, Skrzypek, Grzegorz, Antwi, Eric Ofosu, Heng, Lee, Torres- Martínez, Juan Antonio

“…Fertilizers increase agricultural productivity and farmers' income. However, intensive agriculture frequently overuses fertilizers, which in turn can…”
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Varietal differences in root growth as related to nitrogen uptake by sorghum plants in low-nitrogen environment by Nakamura, Takuji, Adu-gyamfi, Joseph J, Yamamoto, Akiko, Ishikawa, Satoru, Nakano, Hiroshi, Ito, Osamu

“…Hybrid (Sorghum bicolor (L.) Moench cv CSH 9) and local variety (S. bicolor cv. FSRP) of sorghum were grown in an Alfisol field and in pots of Alfisol in…”
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Micro- and nanoplastics in soil ecosystems: Analytical methods, fate, and effects by Wang, Yu, Xiang, Leilei, Amelung, Wulf, Elsner, Martin, Gan, Jay, Kueppers, Stephan, Christian, Laforsch, Jiang, Xin, Adu-Gyamfi, Joseph, Heng, Lee, Ok, Yong Sik, Ivleva, Natalia P., Luo, Yongming, Barceló, Damià, Schäffer, Andreas, Wang, Fang

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Approaches to reduce zinc and iron deficits in food systems by Gregory, Peter J., Wahbi, Ammar, Adu-Gyamfi, Joseph, Heiling, Maria, Gruber, Roman, Joy, Edward J.M., Broadley, Martin R.

“…There is a deficit of mineral micronutrients in global food systems, known as ‘hidden hunger’, especially in the global south. This review focuses on zinc (Zn)…”
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Antibiotic resistance genes in food production systems support One Health opinions by Tiedje, James M., Fu, Yuhao, Mei, Zhi, Schäffer, Andreas, Dou, Qingyuan, Amelung, Wulf, Elsner, Martin, Adu-Gyamfi, Joseph, Heng, Lee, Virta, Marko, Jiang, Xin, Smidt, Hauke, Topp, Edward, Wang, Fang

“…Imprudent use of antibiotics in the production of plants and animals raised for food contributes to the spread and evolution of antibiotic resistance…”
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Use of Stable Isotope Techniques for Research of Diffuse Nitrate Sources in Groundwater by Miha Curk, Matjaž Glavan, Joseph Adu-Gyamfi, Rani Bakkour, Polona Vreča, Sonja Cerar, Vesna Zupanc

“…Nitrate leaching into groundwater is a serious issue in many parts of the world. Usually agricultural use of fertilizers is blamed to be the main source of…”
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Elevated CO2 concentrations increase leaf nitrate reduction by strengthening sink activity in soybean plants by Fujita, K. (Hiroshima Univ., Fukuyama (Japan). Faculty of Applied Biological Science), Nobuyasu, H, Kuzukawa, T, Adu-Gyamfi, J.J, Mohapatra, K

“…An experiment was conducted to examine the effect of CO 2 enrichment on the nitrate uptake, nitrate reduction activity, and translocation of assimilated-N from…”
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Timing of N fertilization on N2 fixation, N recovery and soil profile nitrate dynamics on sorghum/pigeonpea intercrops on Alfisols on the semi-arid tropics by Adu-Gyamfi, Joseph J, Ito, O, Yoneyama, T, Devi, Gayatri, Katayama, K

“…Cropping systems and fertilizer management strategies that effectively use applied nitrogen (N) are important in reducing costs of N inputs. We examined the…”
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Spatial distribution of 7Be in soils of Lower Austria after heavy rains by Iurian, Andra-Rada, Toloza, Arsenio, Adu-Gyamfi, Joseph, Cosma, Constantin

“…The 7 Be approach in estimating the erosion rates is based on the assumption that the deposition of 7 Be fallout associated with the erosive event is spatially…”
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Spatial distribution of super(7)Be in soils of Lower Austria after heavy rains by Iurian, Andra-Rada, Toloza, Arsenio, Adu-Gyamfi, Joseph, Cosma, Constantin

“…The super(7)Be approach in estimating the erosion rates is based on the assumption that the deposition of super(7)Be fallout associated with the erosive event…”
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