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Predication of Soil Water Storage by Spatial
Dependence
in a Deposited Soil Farmland
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By
Pei Zhao and Mingan Shao © 2011. Academic Journal
African Journal of Agricultural Research, Volume 6, Issue 9
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2051-2058 Page(s) |
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Abstract
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Spatial dependence was widely recognized in field observations and the existence was very helpful to
the development of precision agriculture. On the Loess Plateau of China, the soil water contents
(SWCs) at a deposited soil farmland (DF) were measured using the neutron tubes on two sampling lines
during two years. The objectives of this research were to recognize their spatial dependence to predict
soil water storage (SWS) and to divide the DF for future study in such kind farmland... |
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Keywords
Autocorrelation, check-dam, linear regression, soil water content.
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Soil Water Soluble Organic Carbon under Three
Alpine
Grassland Types in Northern Tibet, China
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By
Xuyang Lu, Jihui Fan, Yan Yan and Xiaodan Wang © 2011. Academic Journal
African Journal of Agricultural Research, Volume 6, Issue 9
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2066-2071 Page(s) |
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Abstract
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Water soluble organic carbon (WSOC) is the most mobile and reactive soil carbon source available. It
plays an important role in many biogeochemical processes. In this study, we assessed WSOC in the
upper 0 to 15 cm soil layer, during the growing season of three representative alpine grassland types of
Northern Tibet, with an average elevation of over 4500 m. We also evaluated the contributions of soil
environmental factors on the three types of grassland. We found that the WSOC was typically higher at
the first sampling in May and decreased with subsequent samples... |
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Keywords
Water soluble organic carbon, soil temperature, soil moisture, alpine grassland, Northern Tibet.
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Effect of Land Use and Soil Management Practices
on
Soil Fertility Quality in North China Cities Urban
Fringe
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By
Jing-wei Jin, Yue-fei Xu, Hui-chun Ye, Chong-yang Shen and Yuan-fang Huang © 2011. Academic Journal
African Journal of Agricultural Research, Volume 6, Issue 9
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2059-2065 Page(s) |
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Abstract
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The objective of this study was to explore the spatial variation of soil fertility quality and the influence
factors of human land use and soil management practices on soil fertility quality in North China cities
urban fringe of Beijing using data for 2007 and grey relational analysis (GRA) and geographic
information systems (GIS). Soil total nitrogen, available phosphorus, available potassium, available
copper, zinc, iron and manganese, soil organic matter and pH were measured... |
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Keywords
Soil fertility quality, spatial variability, land use, soil management practices, urban fringe, North
China plain.
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Microcosm Study of the Long Term Effect of
Endosulfan
on Enzyme and Microbial Activities on Two
Agricultural
Soils of Yaounde-Cameroon
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By
Michel Amery Defo, Thomas Njine, Moise Nola and Florence Sidonie Beboua © 2011. Academic Journal
African Journal of Agricultural Research, Volume 6, Issue 9
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2039-2050 Page(s) |
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Abstract
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Soil samples with different physical and chemical characteristics were taken from two sites, Minkoa-
Meyos and Mendong, in Yaounde. These samples were treated with the insecticide endosulfan, using
commercially recommended rates (1.5l ha
-1
), and incubated in the laboratory at 20°C in glass flask for 75
days in order to evaluate their toxic effects on enzyme activities, organic matter content and the
availability of phosphorus in the soils studied. The enzyme activities studied included dehydrogenase,
β-D glucosidase, acid and alkaline phosphatases... |
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Keywords
Endosulfan, soil microcosm, enzyme and microbial activities, exposition time.
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Differentiation of Olive Colletotrichum
Gloeosporioides
Populations on the Basis of Vegetative
Compatibility
and Pathogenicity
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By
S. J. Sanei and S. E. Razavi © 2011. Academic Journal
African Journal of Agricultural Research, Volume 6, Issue 9
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2099-2107 Page(s) |
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Abstract
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Twenty five isolates of Colletotrichum gloeosporioides obtained from fruits of olive, apple and citrus
trees from different regions of Golestan province, northern Iran. Results from cross-inoculation
experiments showed a great variability in pathogenicity among the isolates examined. They were
investigated using complementation tests with nitrate-non-utilizing (Nit) mutants to know their
vegetative compatibility. Among 250 chlorate-resistant sectors obtained, only 187 were Nit mutants... |
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Keywords
Nit mutants, VCG, Colletotrichum gloeosporioides, Olive tree.
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Interrelationships among the Oil and Fatty Acids
in
Maize
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By
Gul Ebru Orhun and Kayihan Z. Korkut © 2011. Academic Journal
African Journal of Agricultural Research, Volume 6, Issue 9
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2115-2117 Page(s) |
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Abstract
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In this study, 28 F1 maize hybrids obtained by 8x8 half diallel crossing were used, in order for the
interrelationships among the oil content and fatty acids to be determined by correlation analyses. The
range values for oil content of hybrids varied between 3.34 to 4.95%. The results showed positive
correlation meaningfully between most traits, and it showed that oleic acid has the most possitive
correlation (r = 0.655∗∗) with oil content... |
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Keywords
Oil, corn, fatty acids, interrelationships, correlation coefficient.
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cDNA, Genomic Sequence Cloning and over-Expression
of Ribosomal Protein L15 Gene (RPL15) from the
Giant
Panda
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By
Bing Sun, Yiling Hou, Wanru Hou, Xiulan Su, Jun Li, Guangfu Wu and Yan Song © 2011. Academic Journal
African Journal of Agricultural Research, Volume 6, Issue 9
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2108-2114 Page(s) |
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Abstract
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RPL15 is a component of the 60S large ribosomal subunit encoded by RPL15 gene and belongs to the
L15e family of ribosomal proteins, which is located in the cytoplasm. The cDNA and genomic sequence
of RPL15 was cloned successfully from the giant panda using RT-PCR and Touchdown-PCR
technology, respectively. These two sequences were analyzed preliminarily and the cDNA of the RPL15
gene was also over expressed in Escherichia coli BL21. The length of fragment cloned is 669 bp,
containing an open-reading frame (ORF) of 615 bp encoding 204 amino acids... |
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Keywords
Giant panda, RT-PCR, RPL15, genomic sequences, cloning, over-express.
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Point Prevalence Study of Gastro-Intestinal
Parasites in
Village Chickens of Centane District, South Africa
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By
Marizvikuru Mwale and Patrick J. Masika © 2011. Academic Journal
African Journal of Agricultural Research, Volume 6, Issue 9
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2033-2038 Page(s) |
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Abstract
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Village chickens improve rural farmers nutritional and income status. Nonetheless, chicken
productivity is chiefly hampered by gastro-intestinal parasites and there is dearth of information on the
prevalence of these parasites in village chickens in South Africa. Point prevalent study was, therefore,
conducted in two villages of Centane district to determine the prevalence of gastro-intestinal parasites
in village chickens. Seventy households were randomly selected for compound sampling of fresh faecal
samples of chickens... |
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Keywords
Parasites, prevalence, rural, village chickens.
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Morphological, Physiological and Biochemical
Responses of Plants to Drought Stress
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By
Shakeel Ahmad Anjum, Xiao-yu Xie, Long-chang Wang, Muhammad Farrukh Saleem,
Chen Man and Wang Lei © 2011. Academic Journal
African Journal of Agricultural Research, Volume 6, Issue 9
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2026-2032 Page(s) |
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Abstract
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Plants in nature are continuously exposed to several biotic and abiotic stresses. Among these stresses,
drought stress is one of the most adverse factors of plant growth and productivity and considered a
severe threat for sustainable crop production in the conditions on changing climate. Drought triggers a
wide variety of plant responses, ranging from cellular metabolism to changes in growth rates and crop
yields. Understanding the biochemical and molecular responses to drought is essential for a holistic
perception of plant resistance mechanisms to water-limited conditions... |
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Keywords
Drought stress, growth, yield, gas exchange, photosynthetic pigments, antioxidative system.
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Assessing Input-Specific Knowledge Gaps in Farmers
Demand for Agricultural Inputs - Seed and
Irrigation
Technologies in Nigeria
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By
Hiroyuki Takeshima © 2011. Academic Journal
African Journal of Agricultural Research, Volume 6, Issue 9
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2072-2077 Page(s) |
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Abstract
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In Sub-Sahara African countries like Nigeria where the substitutability of agricultural inputs tend to be
low, policies that directly improve access to deficient inputs ("input-specific" policies) may be more
effective than other policies that improve access to all inputs but to a lesser extent ("general" policies).
This study uniquely assesses how input-specific policies were distinguished from general policies
among selected studies on seed and irrigation technologies in Nigeria... |
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Keywords
Nigeria, seed, irrigation, input substitutability, technology adoption.
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Grasp Planning Analysis and Strategy Modeling for
Underactuated Multi-Fingered Robot Hand using in
Fruits
Grasping
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By
Li Shanjun, Shuangji Yao, Zhang Yanlin, Meng liang and Lu Zhen
© 2011. Academic Journal
African Journal of Agricultural Research, Volume 6, Issue 9
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2086-2098 Page(s) |
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Abstract
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To solve the unfixed grasping tasks during the fruits picking and rating, grasping modeling is
researched as the most important part of the robot hand solutions. A survey for grasping synthesis
method with dexterous robot hand is presented in this paper. The difference of grasping characters is
introduced between dexterous hand and underactuated hand. Especially, the feature of self-adaptive
enveloping grasp achieved by underactuated finger mechanism is outlined, which has good
performance in grasping unknown objects... |
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Keywords
Underactuated robot hand, grasp planning, neural network, fruits grasping.
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Employing an Adaptive Neuro-Fuzzy Inference System
for Optimum Distribution of Liquid Pesticides
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By
Khalid A. Al-Gaadi, Abdulwahed M. Aboukarima and Ahmed A. Sayedahmed © 2011. Academic Journal
African Journal of Agricultural Research, Volume 6, Issue 9
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2 views |
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2078-2085 Page(s) |
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Abstract
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An adaptive neuro-fuzzy inference system (ANFIS) was implemented to evaluate different combinations
of nozzle flow rates and boom heights in terms of liquid pesticide distribution uniformity from a ground
field sprayer. In addition, the ANFIS was utilized to determine the optimum combination of the two
principal factors (boom height and nozzle flow rate) that would result in the best distribution uniformity.
In ANFIS, the two principal factors were selected as inputs, however, the Coefficient of Distribution
Uniformity (CDU) was considered as the system output... |
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Keywords
Pesticides, nozzle flow rate, boom height, ground field sprayer, adaptive neuro-fuzzy inference
system, coefficient of distribution uniformity.
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Analytical Globalized State Intervention Model in
Rice
Production Development
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By
Iraj Malekmohammadi, Seyed Jamal Farajollah Hosseini, Saeed Yazdani and
Shahin Shadfar © 2011. Academic Journal
African Journal of Agricultural Research, Volume 6, Issue 9
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2015-2025 Page(s) |
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Abstract
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States are interfering in all economic sectors. States intervention is an accepted driven factor in many
developing countries. On the other hand, rice is half of the worlds population food. In addition, rice
self-sufficiency is the desire of many Asian countries where rice is a food security matter. This paper is
about state intervention in major rice producing countries, and how to identify common areas of state
intervention in rice production development. Different state policies in rice sector in world top rice
producing countries are reviewed and compared... |
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Keywords
Rice production development, state intervention, policy making model.
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Transport of Selenium and its Modeling Through One
Dimensional Saturated Soil Columns
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By
Wei Cong , Xingchang Zhang and Ye Feng © 2011. Academic Journal
African Journal of Agricultural Research, Volume 6, Issue 8
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2002-2009 Page(s) |
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Abstract
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The selenium, an essential nutrient and potentially toxic element to human and animal health, is widely
used in agriculture and medicine. Soil is the transitional zone through which selenium entered into
groundwater. Therefore, the transport of selenium through porous soil is of great environment concern,
which is not well understood. The transport of selenite in loessial soil columns was studied using a
miscible displacement technique under various flow rates and influent concentrations in this paper... |
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Keywords
Loessial soil selenite transport, flow rate, influent concentration, convection-dispersion equation,
studio of analytical models.
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Effects of the Level of Protein and Energy on
Growth
Dynamics, Feed Conversion and Quality of Stern of
Growing Breeding Gilts
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By
Vidica Stanacev, Stanimir Kovcin, Sasa Dragin, Nikola Puvaca, Vladislav Stanacev,
Nedeljka Nikolova and Sava Zaric © 2011. Academic Journal
African Journal of Agricultural Research, Volume 6, Issue 8
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1958-1961 Page(s) |
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Abstract
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This paper examined the effect of two levels of energy and protein in the diet of growing breeding gilts
on the dynamics of growth, feed conversion and quality of stern. The results showed that increasing
levels of energy and protein lead to an increase in daily growth, more efficient exploitation of feed and a
better quality of stern of gilts. |
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Keywords
Protein, energy, gilts, quality of stern.
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