Effects of Wood Vinegar Mixed with Cyhalofop-butyl+bentazone or Butachlor+chlomazone on Weed Control of Rice (Oryza sativa L.)

Cyren M. Rico,Lemuel O. Mintah,Souliya Souvandouane,Il Kyung Chung(정일경),Dong Il Shin(신동일),Tae Kwon Son(손태권),Sang Chul Lee(이상철) 韓國雜草學會 2007 Weed&Turfgrass Science Vol.27 No.2

Effects of Mixed Application of Wood Vinegar and Herbicides on Weed Control, Yield and Quality of Rice (Oryza sativa L.)

Cyren M. Rico,Souliya Souvandouane,Lemuel Ohemeng Mintah,Il Kyung Chung,Tae Kwon Son,Sang Chul Lee 韓國作物學會 2007 Korean journal of crop science Vol.52 No.4

The effect of mixed treatments of wood vinegar and sulfonylurea-based herbicides on weed control, yield and yield components, and quality of rice was investigated. Two herbicides were tested namely: imazosulfuron-ethyl+thiobencarb[ethyl-1-(2-chloroimidazo[1,2-α ]pyridin-3-ylsulfonyl)-3-(4,6-dimethoxypyrimidin-2-yl) urea+S-4-chlorobenzyl diethyl(thiocarbamate)], and bensulfuronmethyl+butachlor [methyl α -[(4,6-dimethoxypyrimidin-2-ylcarbamoyl)sulfamoyl]-o-toluate+N-butoxymethyl-2-chloro-2',6'-diethylacetanilide]. The experiment was carried out in a randomized complete block design with 3 replications and 5 treatments. Treatments used were recommended(RH: 100%) and half-recommended(HRH: 50%) application rates of each herbicide. Half-recommended application rates were combined with 1 mL wood vinegar 500mL~;water-1 (500) and 1 mL wood vinegar 1000mL~;water-1 (1000) wood vinegar. Plots for no herbicide treatments were also prepared and used as control. Results showed that wood vinegar significantly increased efficacy of HRH in bensulfuron-methyl+butachlor while high efficacy was already obtained in HRH treatment of imazosulfuron-ethyl+thiobencarb. Wood vinegar did not improve the efficacy of imazosulfuron-ethyl+thiobencarb but improved rice yield. Significantly similar rice yields were obtained in the HRH+1000 WV and RH treatments of both herbicides. There were no significant variations in the yield components among the treatments; however, differences in yield can be attributed to the variations in the spikelet number and ripening ratio. Data on rice quality analysis did not show clear trend on the effects of the treatments on grain appearance and nutritional quality.

Cerium Oxide Nanoparticles Impact Yield and Modify Nutritional Parameters in Wheat (<i>Triticum aestivum</i> L.)

Rico, Cyren M.,Lee, Sang Chul,Rubenecia, Rosnah,Mukherjee, Arnab,Hong, Jie,Peralta-Videa, Jose R.,Gardea-Torresdey, Jorge L. American Chemical Society 2014 Journal of agricultural and food chemistry Vol.62 No.40

<P>The implications of engineered nanomaterials on crop productivity and food quality are not yet well understood. The impact of cerium oxide nanoparticles (<I>n</I>CeO<SUB>2</SUB>) on growth and yield attributes and nutritional composition in wheat (<I>Triticum aestivum</I> L.) was examined. Wheat was cultivated to grain production in soil amended with 0, 125, 250, and 500 mg of <I>n</I>CeO<SUB>2</SUB>/kg (control, <I>n</I>CeO<SUB>2</SUB>-L, <I>n</I>CeO<SUB>2</SUB>-M, and <I>n</I>CeO<SUB>2</SUB>-H, respectively). At harvest, grains and tissues were analyzed for mineral, fatty acid, and amino acid content. Results showed that, relative to the control, <I>n</I>CeO<SUB>2</SUB>-H improved plant growth, shoot biomass, and grain yield by 9.0%, 12.7%, and 36.6%, respectively. Ce accumulation in roots increased at increased <I>n</I>CeO<SUB>2</SUB> concentration but did not change across treatments in leaves, hull, and grains, indicating a lack of Ce transport to the above-ground tissues. <I>n</I>CeO<SUB>2</SUB> modified S and Mn storage in grains. <I>n</I>CeO<SUB>2</SUB>-L modified the amino acid composition and increased linolenic acid by up to 6.17% but decreased linoleic acid by up to 1.63%, compared to the other treatments. The findings suggest the potential of nanoceria to modify crop physiology and food quality with unknown consequences for living organisms.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jafcau/2014/jafcau.2014.62.issue-40/jf503526r/production/images/medium/jf-2014-03526r_0002.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/jf503526r'>ACS Electronic Supporting Info</A></P>

Effects of Biofertilizer on the Quality and Antioxidant Property of Rice (Oryza sativa L.)

Rico, Cyren Mendoza,Bhuiyan, Mohammad Kamrul Islam,Mintah, Lemuel O.,Shin, Dong-Il,Chung, Il-Kyung,Son, Tae-Kwon,Lee, Sang-Chul The Korean Society of Crop Science 2007 Korean journal of crop science Vol.52 No.3

The effect of biofertilizer in enhancing nutrient quality and antioxidant property of rice grain was investigated. The experiment was carried out in a randomized complete block design with 3 replications and 7 treatments namely : RF = $N-P_2O_5-K_2O(11-5.5-4.8kg\;10a^{-1});$ half of the recommended fertilizer rate, $HRF=N-P_2O_5-K_2O(5.5-2.75-2.4kg\;10a^{-1}):$ HRF+Bio 250=HRF combined with 250 kg Biofertilizer 10 $a^{-1}$; HRF+Bio 500=HRF combined with 500 kg Biofertilizer 10 $a^{-1};$ Bio 250=250 kg Biofertilizer 10 $a^{-1};$ Bio 500=500 kg Biofertilizer 10 $a^{-1};$ and NF=No Fertilizer. Results showed that HRF+Bio 500 obtained a significantly higher protein content but a significantly lower amylose content compared with RF and NF treatments. Highest phytic acid content was recorded in NF treatment while the lowest was observed in HRF+500 treatment. The highest values in both electron donating ability and reducing power were obtained in HRF+Bio 500 treatment. All treatments obtained higher reducing power than that of the RF treatment and that NF treatment showed comparable values in both electron donating ability and reducing power with those of the treated plots. Highest antimutagenicity property was also observed in HRF+Bio 500 treatment followed by Bio 500 treatment. This study showed the possibility of using biofertilizer to enhance nutritional quality and antioxidant property of rice.

Effects of Mixed Application of Wood Vinegar and Herbicides on Weed Control, Yield and Quality of Rice(Oryza sativa L.)

Rico, Cyren M.,Souvandouane, Souliya,Mintah, Lemuel Ohemeng,Chung, Il-Kyung,Son, Tae-Kwon,Lee, Sang-Chul The Korean Society of Crop Science 2007 한국작물학회지 Vol.52 No.4

The effect of mixed treatments of wood vinegar and sulfonylurea-based herbicides on weed control, yield and yield components, and quality of rice was investigated. Two herbicides were tested namely: imazosulfuron-ethyl+thiobencarb[ethyl-1-(2-chloroimidazo[1,2-$\alpha$]pyridin-3-ylsulfonyl)-3-(4,6-dimethoxypyrimidin-2-yl) urea+S-4-chlorobenzyl diethyl(thiocarbamate)], and bensulfuronmethyl+butachlor [methyl $\alpha$-[(4,6-dimethoxypyrimidin-2-ylcarbamoyl)sulfamoyl]-o-toluate+N-butoxymethyl-2-chloro-2',6'-diethylacetanilide]. The experiment was carried out in a randomized complete block design with 3 replications and 5 treatments. Treatments used were recommended(RH: 100%) and half-recommended(HRH: 50%) application rates of each herbicide. Half-recommended application rates were combined with 1 mL wood vinegar $500mL\;water^{-1}$(500) and 1 mL wood vinegar $1000mL\;water^{-1}$(1000) wood vinegar. Plots for no herbicide treatments were also prepared and used as control. Results showed that wood vinegar significantly increased efficacy of HRH in bensulfuron-methyl+butachlor while high efficacy was already obtained in HRH treatment of imazosulfuron-ethyl+thiobencarb. Wood vinegar did not improve the efficacy of imazosulfuron-ethyl+thiobencarb but improved rice yield. Significantly similar rice yields were obtained in the HRH+1000 WV and RH treatments of both herbicides. There were no significant variations in the yield components among the treatments; however, differences in yield can be attributed to the variations in the spikelet number and ripening ratio. Data on rice quality analysis did not show clear trend on the effects of the treatments on grain appearance and nutritional quality.

Yield Performance and Nutritional Quality of‘Agakong’Soybean Harvested in Drained-Paddy and Upland Fields

은정호,Cyren M. Rico,김만근,Souliya Souvandouane,손태권,정일경,이상철 한국자원식물학회 2007 한국자원식물학회지 Vol.20 No.3

Yield Performance and Nutritional Quality of 'Agakong' Soybean Harvested in Drained-Paddy and Upland Fields

Eun, Jhong-Ho,Rico, Cyren M.,Kim, Man-Keun,Souvandouane, Souliya,Son, Tae-Kwon,Shin, Dong-Il,Chung, Il-Kyung,Lee, Sang-Chul The Plant Resources Society of Korea 2007 한국자원식물학회지 Vol.20 No.3

The study was conducted to evaluate the performance of the popular isoflavone-rich soybean 'agakong' in upland and in drained-paddy fields. Analysis revealed no significant variation in terms of plant height, number of seeds per pod, number of nodes, and 100-seed weight between the two cropping system. Number of pods was significantly higher in paddy field(234.2kg 10a$^{-1}$) compared to those harvested in the upland field, which was later manifested on the yield where paddy soybeans obtained 278.1kg 10a$^{-1}$ whereas upland only obtained 179.3kg 10a$^{-1}$. This observed difference in yield was attributed to the observed higher amount of N in the paddy soil (0.907%) as compared to the upland soil (0.458%). In terms of nutritional content, protein and phytic acid contents were the only parameters that showed significant differences while oil, sugar, reducing power and fatty acids were all comparable in paddy and filed condition. Protein content was higher in upland soil (47.4%) than that of the paddy (44.9%) soil. On the opposite, phytic acid was higher in paddy (2.90%) than in upland (1.09%). This study showed that the yield of soybean is generally a factor of soil N, drained-paddy field production of soybean is comparable to upland-filed production with the benefit of increasing phytic acid content while maintaining its nutritional value.

Effects of Biofertilizer on Growth and Yield of Rice

Mohammad Kamrul Isiam Bhuiyan,Cyren M. Rico,Lemuel O. Mintah,Man Keun Kim,Tae Kwon Shon,Il Kyung Chung,Sang Chul Lee 韓國作物學會 2006 Korean journal of crop science Vol.51 No.4

The effect of biofertilizer (compound of microbial inoculants or groups of micro-organisms) on growth and yield of rice was investigated. The experiment was carried out in a randomized complete block design with 3 replications and 7 treatments namely: RF=N-P2O5-K2O (11-5.5-4.8 kg 10a-1 ); half of the recommended fertilizer rate, HRF=N-P2O5-K2O (5.5-2.75-2.4 kg 10a-1 ); HRF+Bio 250=HRF combined with 250 kg biofertilizer 10a-1 ; HRF+Bio 500=HRF combined with 500 kg biofertilizer 10a-1 ; Bio 250=250 kg biofertilizer 10a-1 ; Bio 500=500 kg biofertilizer 10a-1 ; and NF = No Fertilizer. Results showed that the recorded values of plant height, tiller number and chlorophyll content at 40 to 60 days after transplanting (DAT) in HRF+Bio 500 were significantly higher than those recorded in the RF treatment. Similar observations between these two treatments were only recorded from 60 DAT onwards. Yield components were also superior in HRF+Bio 500 treatment and comparable to that of RF. The highest grain yield obtained in HRF+Bio 500 treatment (785.8 kg 10a-1 ) was statistically similar to that of RF (739.8 kg 10a-1 ) but significantly higher than that of NF (506.7 kg 10a-1 ). Finally, head grain recovery (90.9) was low while chalkiness (0.03) was high at HRF+Bio 500 treatment as compared with RF, which were (96.1) and (0.3), respectively. Results showed that combined treatment of HRF and 500 kg biofertilizer 10a-1 has similar effects on the growth and yield of rice with that of RF.

Effects of Biofertilizer Rate and Application Time on Growth Characters and Grain Quality of Rice

Lemuel Ohemeng Mintah,Cyren Mendoza Rico,Dong Il Shin,Il Kyung Chung,Tae Kwon Son,Sang Chul Lee 韓國作物學會 2007 한국작물학회지 Vol.52 No.4

A field experiment was conducted to investigate effects of application time and rate of biofertilizer alone and in combination with chemical NPK fertilizer on growth, yield and quality of rice. The biofertilizer used composted food waste as substrate and added with effective microorganism. The treatments included recommended NPK fertilizer(RF, 11-5.5-4.8kg~;10a-1 ), half recommended NPK fertilizer(HRF, 5.5-2.8-2.4kg~;10a-1 ), half recommended NPK fertilizer plus 250kg~;10a-1 biofertilizer(HRF+Bio 250) and 500kg~;10a-1 biofertilizer(HRF+Bio 500). The biofertilizer treatments were applied at 0, 5 and 10 days before transplanting(DBT). Grain yield of HRF+Bio 250 at 5 DBT(648.4kg~;10a-1 ) was statistically similar to the highest obtained in the RF(654.1kg~;10a-1 ). Tiller numbers at HRF plus biofertilizer treatments were already high during the maximum tillering stage, and were similar with that of the RF and higher than that of the HRF during heading stage. Likewise, ripening ratio at HRF plus biofertilizer treatments was similar with that of the RF and higher than that of the HRF. Furthermore, all the biofertilizer treatments improved protein content but reduced the amylose content and palatability compared to treatments with chemical NPK fertilizer alone. Thus, HRF+Bio 250 at 5 DBT can be used to save 50% chemical NPK fertilizer and at the same time obtain an improved rice grain yield and quality.

Effects of Biofertilizer Rate and Application Time on Growth Characters and Grain Quality of Rice

Mintah, Lemuel Ohemeng,Rico, Cyren Mendoza,Shin, Dong-Il,Chung, Il-Kyung,Son, Tae-Kwon,Lee, Sang-Chul The Korean Society of Crop Science 2007 Korean journal of crop science Vol.52 No.4

A field experiment was conducted to investigate effects of application time and rate of biofertilizer alone and in combination with chemical NPK fertilizer on growth, yield and quality of rice. The biofertilizer used composted food waste as substrate and added with effective microorganism. The treatments included recommended NPK fertilizer(RF, $11-5.5-4.8kg\;10a^{-1}$), half recommended NPK fertilizer(HRF, $5.5-2.8-2.4kg\;10a^{-1}$), half recommended NPK fertilizer plus $250kg\;10a^{-1}$ biofertilizer(HRF+Bio 250) and $500kg\;10a^{-1}$ biofertilizer(HRF+Bio 500). The biofertilizer treatments were applied at 0, 5 and 10 days before transplanting(DBT). Grain yield of HRF+Bio 250 at 5 DBT($648.4kg\;10a^{-1}$) was statistically similar to the highest obtained in the RF($654.1kg\;10a^{-1}$). Tiller numbers at HRF plus biofertilizer treatments were already high during the maximum tillering stage, and were similar with that of the RF and higher than that of the HRF during heading stage. Likewise, ripening ratio at HRF plus biofertilizer treatments was similar with that of the RF and higher than that of the HRF. Furthermore, all the biofertilizer treatments improved protein content but reduced the amylose content and palatability compared to treatments with chemical NPK fertilizer alone. Thus, HRF+Bio 250 at 5 DBT can be used to save 50% chemical NPK fertilizer and at the same time obtain an improved rice grain yield and quality.