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INFLUENCE OF SKY CONDITIONS ON ESTIMATION OF PHOTOSYNTHETIC PHOTON FLUX DENSITY FOR AGRICULTURAL ECOSYSTEM
PPFD PAR Solar radiation PAR fraction Quantum-to-energy ratio Diffuse ratio Clearness index Sky conditions
2018/5/16
Photosynthetic photon flux density (PPFD: μmol m−2 s−1) is indispensable for plant physiology processes in photosynthesis. However, PPFD is seldom measured, so that PPFD ...
Use of nonlinear programming to determine the economically optimal energy density in laying hens diet during phase 1
Energy feed formulation laying hens nonlinear programming
2011/1/12
This study was designed to show the advantage of nonlinear programming in diet formulation. A nonlinear programming Excel workbook was developed that used the Excel solver to optimize energy density a...
POPULATION DENSITY OF PHYTONOMUS VARIABILIS HRBST. AND PHYTODECTA FORNICATA BRUGG. ON MULTIFOLIOLATE AND TRIFOLIOLATE ALFALFA IN RELATION TO ANATOMICAL CHARACTERISTICS ON THEIR LEAVES
feeding behavior alfalfa weevil Phytodecta fornicata Brugg
2010/12/8
Two alfalfa cultivars - the multifoliolate “Mnogolistna 1” and the trifoliolate “Europe” were investigated for their resistance towards two main alfalfa defoliators Phytonomus variabilis Hrbst., 1795 ...
不同种植密度番茄生长行为的结构功能模型模拟（Simulation of Tomato Growth Behavior in Response to Planting-density Based on Functional-structural Model）
温室 番茄 种植密度 GreenLab模型
2009/11/3
为研究不同密度下温室番茄的生长行为，对结构功能模型GreenLab进行改进，在提高拟合度的基础上，获得不同密度下番茄生长参数，通过参数分析将环境与番茄植株生长行为相联系。结果表明密度影响同化物产生与分配，通过外在形态，如出叶速率、叶厚、坐果率等表现，GreenLab模型可以重建这种生长行为变化。
Effects of Planting Density on Nitrogen Fixation and Seed Yield of Soybeans
Acetylene reduction method Nitrogen fixation activity Planting density Soybean Yield component
2009/8/6
Effects of planting density on nitrogen fixation activity (acetylene reduction activity, ARA), yield and yield components of soybeans (Glycine max (L.) Merr.) were evaluated in the field experiment c...
Distribution of Arbuscular Mycorrhizal Fungi in Upland Field Soil of Japan 1.Relationship between Spore Density and the Soil Environmental Factor
Arbuscular mycorrhizal fungi Available P Spore density Upland field
2009/7/23
To quantify the effects of arbuscular mycorrhizal fungi (AM fungi) on the growth of upland field crops cultivated in Japan, we analyzed soil samples from 124 sites in 18 Japanese prefectures for avail...
Distribution of Arbuscular Mycorrhizal Fungi in Upland Field Soil of Japan 2.Spore Density of Arbuscular Mycorrhizal Fungi and Infection Ratio in Soybean and Maize Fields
Arbuscular mycorrhizal fungi Available phosphate Infection ratio Phosphate adsorption coefficient Spore density
2009/7/23
In this study, soil samples were collected from upland fields where maize and soybeans had been cultivated and the density of AM (arbuscular mycorrhizal) fungal spores and the percentage of soybean ro...
Correlation of Planting Density with Yield and Yield Components in Job’s-Tear Plant (Coix lacryma-jobi L. var frumentacea Makino)
Diameter of stem Planting density Yield Yield component Dry weight Number of node
2009/7/9
Job’s-tears (Coix lacryma-jobi L. var frumentacea Makino), cv. Hatochikara was sown in an upland field converted from a paddy field at the densities of 2.8, 5.6, 6.3, 8.3, 11.1, 16.0 and 25.0 hill pe...
EFFECT OF THE CULTURING DENSITY OF THE Sinorhizobium meliloti BP ON THE DEVELOPMENT OF LUCERNE（Medicago sativa L）AND NITROGENASE ACTIVITY
inoculum density lucerne Medicago sativa L nitrogenase activity Sinorhizobium meliloti
2009/3/31
The authors investigated the impact of the Sinorhizobium inoculum density on the plant development of alfalfa, nodulation and nitrogenase activity. It was found that plants inoculated with a 10% inoc...
EFFECT OF THE CULTURING DENSITY OF THE Sinorhizobium meliloti BP ON THE DEVELOPMENT OF LUCERNE（Medicago sativa L）AND NITROGENASE ACTIVITY
inoculum density lucerne Medicago sativa L nitrogenase activity Sinorhizobium meliloti
2009/3/31
The authors investigated the impact of the Sinorhizobium inoculum density on the plant development of alfalfa, nodulation and nitrogenase activity. It was found that plants inoculated with a 10% inocu...
EFFECT OF THE SOWING DENSITY AND HERBICIDES ON THE COMPOSITION OF AMINO ACIDS AND BIOLOGICAL VALUE OF SPRING TRITICALE PROTEIN
spring triticale amino acids biological value of protein sowing density herbicides
2009/3/31
The research material was made up of ‘Wanad’ spring triticale grains obtained from the experiments carried out from 1999 to 2001 at the Zawady Experimental Station of the Podlasie University in Siedlc...
The Effects of Plant Density on the Yield and Yield Components of Chickpea（Cicer arietinum L）in Van
Plant Density Yield Components of Chickpea（Cicer arietinum L） Van
2009/1/16
This study was conducted in the experimental area of Yüzüncü Yıl University Agricultural Faculty in 1994-1995. The trial was carried out in a randomized block desing with four replications. In th...
Density of Centaurea solstitialis L. and Its Natural Enemies Ceratapion spp. in Southern Turkey
Biological control weed Centaurea solstitialis Ceratapion spp
2009/1/13
Centaurea solstitialis L., yellow star thistle, is an annual weed that belongs to the family Asteraceae. In Turkey, this weed can be found in pasture areas, along roadsides, in cultivated areas and i...
Changes in soil organic matter, bulk density and tensile strength of aggregatesafter percolation in soils after conservation and conventional tillage
percolation process carbon distribution aggregates strength
2008/11/26
The type of tillage in arable soils affects porosity of the soil and in consequence the hydraulic conductivity. The accessibility and mobility of organic carbon in arable soils can differ depending on...
Comparison of two- and three-electrode systems in measurements of potential oxygen flux density in soil*
soil aeration soil oxygen flux ODR OFD
2008/11/24
This paper presents a comparison of the results of potential flux of oxygen in soil, determined by the voltammetric method, OFD, with the use of a three-electrode set of electrodes in the system of po...