American Journal of Agricultural Research


Nitrogen Nutrition, Yield, and Quality of Cotton under Varying Nitrogen Application Timings and Planting Dates

Research Article of American Journal of Agricultural Research Nitrogen Nutrition, Yield, and Quality of Cotton under Varying Nitrogen Application Timings and Planting Dates Xinhua Yin1* and Guisu Zhou2 1Associate Professor, Ph.D. Department of Plant Sciences The University of Tennessee 605 Airways Blvd. Jackson, TN 38301, USA; 2Associate Professor, Ph.D. College of Tobacco Science Yunnan Agricultural University Kunming, Yunnan 650201, China Nitrogen (N) management may need to be different for cotton planted at different dates. The objective of this research was to determine the optimal N application timing for cotton under different planting dates. A field trial was conducted on the University of Tennessee West Tennessee Research and Education Center at Jackson, TN in 2011 and 2012 in a split plot randomized complete block design with four replicates. Three cotton planting dates of early planting, standard planting, and late planting and four N application timings of pre-plant, at-planting, early side-dress, and late side-dress were assigned to the whole plots and subplots, respectively. Although the interactions of planting date by N application timing, year by N application timing, and year by planting date were significant on leaf N at early bloom and late bloom; cotton plants received adequate N nutrition for optimal yield under different N application timings and varying planting dates in both years. No significant difference in lint yield was observed among the four N application timings regardless of planting date in 2011 that was wet in the early season but dry in the late season. In 2012 that was dry in the early season but wet in the late season, however, lint yield was higher with late side-dress of N than pre-plant at standard planting; the yield did not differ among the four N application timings at early planting or late planting. Higher fiber micronaire but lower fiber strength ...

Development status and trend of high efficiency grain air-and-screen cleaning device

Review Article of American Journal of Agricultural Research Development status and trend of high efficiency grain air-and-screen cleaning device Li Qinglun1, Jin Chengqian1,2*,Ning Xinjie1 ,Liu Peng1, Yin Xiang1 1School of Agricultural Engineer and Food Science, Shandong University of Technology, Zibo 255000, China; 2Nanjing Research Institute for Agricultural Mechanization Ministry of Agriculture, Nanjing 210014,China The cleaning device in modern agricultural equipment is an important part of the reference of the grain combine harvester. The loss rate of the grain and other factors are directly affected by the cleaning device. In this paper, the development status of the current cleaning equipment and the research and analysis are described in three aspects: the distribution of the airflow field in the cleaning device, the movement law of the exudate, and the research on the centrifugal fan. The loss rate and the impurity ratio of the grain harvest are reduced. Objectives, reviewed the research status and trends of domestic and foreign grain combine harvester cleaning equipment, and put forward new ideas for the future development prospects and prospects of grain combine harvester, and provide reference for improving the research and design of grain harvester cleaning equipment. experiments. Keywords: grain harvester; cleaning device; airflow field; decanted state; fan ...

Soil Nutrient Levels after Corn Harvest under NPSFe Biofertilizer and NPKZn Briquettes

Research Article of American Journal of Agricultural Research Soil Nutrient Levels after Corn Harvest under NPSFe Biofertilizer and NPKZn Briquettes Xinhua Yin* and John H. Winings Department of Plant Sciences, University of Tennessee, 605 Airways Boulevard, Jackson, TN 38301, USA Interest in the use of alternate fertilizers has increased in recent years for improving crop nutrition and soil health. The efficacy of these fertilizers on corn (Zea mays L.) production has not been well documented. Alternate fertilizers organically enhanced NPSFe biofertilizer (NPSFe) manufactured from sterilized organic additives extracted from municipal wastewater biosolids and NPKZn briquettes (briquettes) produced by compacting commercially available solid fertilizers into a super-granule between 1-3 grams were evaluated for nutrient concentrations in the soil relative to common fertilizers ammonium sulfate (+P+K) and urea (+P+K) at Jackson and Grand Junction, TN from 2011 to 2013. NPSFe, the briquettes, ammonium sulfate, and urea and four N application rates of 0, 85, 128/170, and 170/255 kg ha-1 were assigned to the main and sub plots, respectively, in a split plot randomized complete block design with four replicates. Soil at a 0-15 cm depth was analyzed for Bray P, NO3--N, NH4+-N, SO42--S, and organic C concentrations after corn harvest. The briquettes produced lower soil NO3--N concentrations than the other fertilizers particularly under wet soil conditions. NPSFe sometimes had higher post-harvest soil NH4+-N than the briquettes and ammonium sulfate. NPSFe sometimes tended to be higher than the other fertilizers in post-harvest soil P concentrations after corn harvest, thus the P provided by NPSFe may be less available than TSP. NPSFe and ammonium sulfate both increased post-harvest soil SO42--S levels compared to the briquettes and urea, particularly at higher application rates. NPSFe had greater soil organic C level than the other fertilizers. In conclusion, NPSFe consistently increases soil organic C level, particularly at ...

Corn Mineral Nutrition Responses to NPSFe Biofertilizer and NPKZn Briquettes

Research Article of American Journal of Agricultural Research Corn Mineral Nutrition Responses to NPSFe Biofertilizer and NPKZn Briquettes Xinhua Yin* and John H. Winings Department of Plant Sciences, University of Tennessee, 605 Airways Boulevard, Jackson, TN 38301, USA Alternative fertilizers have been increasingly developed during recent years in order to improve crop nutrition. The efficacy of these fertilizers on corn (Zea mays L.) production has not been well examined. Alternative fertilizers of organically enhanced NPSFe biofertilizer (NPSFe) manufactured from sterilized organic additives extracted from municipal wastewater biosolids and NPKZn briquettes (briquettes) produced by compacting commercially available solid fertilizers into a super-granule between 1-3 grams were evaluated for nutrient concentrations in plant biomass and grain of corn compared to commonly used N fertilizers ammonium sulfate and urea at Jackson and Grand Junction, TN during 2011-2013. NPSFe, the briquettes, ammonium sulfate, and urea and four N application rates of 0, 85, 128/170, and 170/255 kg ha-1 were assigned to the main and sub plots, respectively, in a split plot randomized complete block design with four replicates. Aboveground plant biomass at the silking growth stage (R1) and physiological maturity stage (R6) and grain at harvest were analyzed for N, P, K, S, Fe, and Zn concentrations. NPSFe resulted in similar or lower plant N concentrations relative to the conventional fertilizers ammonium sulfate and urea. The briquettes performed equally or better in terms of plant N concentrations compared to ammonium sulfate and urea. In excessive spring precipitation, the briquettes had higher biomass N concentrations at R1. NPSFe tended to have lower P concentrations in plant biomass at R1 and R6. The briquettes had similar or higher plant P levels relative to ammonium sulfate and urea. Both NPSFe and ammonium sulfate increased S concentrations in plant biomass compared to the briquettes and urea. In conclusion, ...

Research on screening performance of double layer vibrating screen for soybean harvester based on discrete element method

Research Article of American Journal of Agricultural Research Research on screening performance of double layer vibrating screen for soybean harvester based on discrete element method Ning Xinjie1, Jing Chengqian1,2*, Liu Peng1, Li Qinglun1, Chen Yanpu1 1School of Agricultural Engineer and Food Science, Shandong University of Technology, Zibo 255000, China; 2Nanjing Research Institute for Agricultural Mechanization Ministry of Agriculture, Nanjing 210014,China In order to improve the screening effect of grain combine harvester, it is necessary to study the influence of different screening parameters on screening performance.In this paper, discrete element method was used to simulate the screening process of soybean and short stems by selecting different screening parameters, and dynamic screening efficiency and the number of short stems under screening were introduced as evaluation criteria.The results show that under certain other conditions, the vibration frequency, amplitude and direction angle have significant influence on the screening performance, while the inclination angle of the upper screen has little influence on the screening performance. With the increase of vibration frequency, amplitude and direction angle, screening efficiency increased first and then decreased, while the number of short stalks under screening increased first and then decreased. Considering the screening efficiency and the number of short stalks under the screening, it is concluded that the screening performance is better when the amplitude is 25 mm, the vibration frequency is 4 Hz, the vibration direction angle is 25 degrees and the upper screening angle is 3 degrees. The simulation results are verified by field experiments, and the simulation results meet the requirements of field experiments. Keywords: Vibrating screen; Discrete element method; Screening performance; Screening parameters ...

Dr. Ajai Kumar Srivastav
Emeritus Professor, Department of Zoology, D.D.U. Gorakhpur University

Dr. Osman Tiryaki
Çanakkale Onsekiz Mart University, Faculty of Agriculture, Plant Protection Department, Terzioglu Campus, 17020, ÇANAKKALE, TURKEY

Prof.Dr. Süleyman Taban
Professor, Department of Soil Science and Plant Nutrition, Ankara University, Ankara-TURKEY

Dr. Nikolay Dimitrov Panayotov
Professor & Head, Department of Horticulture, Agricultural University

Dr.  Samuel Ohikhena Agele 
Lecture/Researcher, Department of Crop, Soil & Pest Management, Federal University of Technology

Dr. Ghousia Begum
Principal Scientist, Toxicology Unit, Biology Division, CSIR-Indian Institute of Chemical Technology

Dr. Sirisha Adamala
Assistant Professor, Department of Applied Engineering, Vignan's University

Dr. Mala Trivedi
Professor, Amity Institute of Biotechnology, AUUP, Lucknow-226028

Dr Ambreesh Singh Yadav
Scientific Officer, U.P. Council of Agricultural Research, Lucknow, U.P., India

Dr. Abd El-Aleem Saad Soliman Desoky
Professor, Plant Protection Department, Faculty of Agriculture, Sohag University

Dr. Chang-Hong Liu
Professor, School of life sciences, Nanjing University, P.R. China

Dr. İrfan Özberk
Professor & Head, Dept. of Field Crops, Fac. of Agri, The Univ. of Harran, Sanliurfa, Turkey

Dr. Papadakis Ioannis
Assistant Professor, Laboratory of Pomology, Agricultural University of Athens

Dr. KAPTAIN KISHOR BAJPAYEE
Associate Professor & Head, Center for Research in Ethno & Medico Botany Dr. R.M.L. PG. College ( C.S.J.M. UNIVERSITY)

Dr. Ayman EL Sabagh
Assistant professor, agronomy department, faculty of agriculture, kafresheikh university, Egypt; Visiting scientist at Field Crops Department ,Faculty of Agriculture , Cukurova University, Turkey

Dr. Alaa Jabbar Abd Al-Manhel
Assistant Professor, Agriculture college /Basra University

Dr. Bibhuti Bhusan Sahoo
Scientist, Regional Research & Technology Transfer Station, (OUAT), Semiliguda

Dr. Sedat Karadavut
Assistant Professor, Agricultural Structers and İrrigation (Biosystems Engineering), Trakya University/TURKEY

Dr. Abhishek Naik
Area Manager, Technology development department

Dr. Ionel BONDOC
Associate Professor, University of Agricultural Sciences and Veterinary Medicine Iasi, Faculty of Veterinary Medicine Iasi (ROMANIA), Department of Public Health

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1. Avinaba Mukherjee, Sourav Sikdar, Anisur Rahman Khuda-Bukhsh. Evaluation of ameliorative potential of isolated flavonol fractions from Thuja occidentalis in lung cancer cells and in Benzo(a) pyrene induced lung toxicity in mice. International Journal of Traditional and Complementary Medicine, 2016; 1(1): 0001-0013. 
2. Vikas Gupta, Parveen Bansal, Junaid Niazi, Kamlesh Kohli, Pankaj Ghaiye. Anti-anxiety Activity of Citrus paradisi var. duncan Extracts in Swiss Albino Mice-A Preclinical Study. Journal of Herbal Medicine Research, 2016; 1(1): 0001-0006.

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American Journal of Agricultural Research

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