scholarly journals GROWTH ANALYSIS OF EMERGENT MACROPHYTES CONSIDERING THE DIFFERENCE OF EACH VERTICAL PRODUCTIVE STRUCTURE

2001 ◽  
Vol 45 ◽  
pp. 1093-1098
Keyword(s):  
Growth Analysis ◽  
Emergent Macrophytes ◽  
Productive Structure ◽  
The Difference

Growth and yield differences between triazine-tolerant and non-triazine-tolerant cultivars of canola

2002 ◽  
Vol 53 (6) ◽  
pp. 643 ◽  
Author(s):  
M. J. Robertson ◽  
J. F. Holland ◽  
S. Cawley ◽  
T. D. Potter ◽  
W. Burton ◽  
...  
Keyword(s):  
Harvest Index ◽  
Growth Analysis ◽  
Oil Content ◽  
Cropping Systems ◽  
Growth And Yield ◽  
Physiological Basis ◽  
Use Efficiency ◽  
The Difference ◽  
Radiation Extinction ◽  
Radiation Use

Canola tolerant to the triazine group of herbicides is grown widely in Australian broad-acre cropping systems. Triazine-tolerant (TT) cultivars are known to have a yield and oil content penalty compared with non-TT cultivars. This study was designed to elucidate the crop physiological basis for the yield differences between the two types. Two commercial cultivars, near-isogenic for the TT trait, were compared in a detailed growth analysis in the field, and 22 crops were compared for phenology and crop attributes at maturity. In the growth analysis study, the TT trait was found to lower radiation use efficiency, which carried through to less biomass at maturity. There were minimal effects on leaf area development and harvest index, and no effect on canopy radiation extinction. Across the 22 crops, where yield varied from 240 to 3400 kg/ha in the non-TT cultivar, yield was on average 26% less in the TT cultivar due to less biomass produced, as there was no significant effect on harvest index. The difference in oil content (2-5%) was greater in low oil content environments. Flowering was delayed by 2-10 days with a greater delay being in later flowering environments. Quantification of the physiological attributes of TT canola allows the assessment of the productivity of different cultivar types across environments.

scholarly journals Evaluasi Kinerja Pertumbuhan Sapi Silangan Belgian Blue dan Peranakan Ongole

2019 ◽  
Vol 19 (2) ◽  
pp. 136-141
Author(s):  
Jakaria Jakaria ◽  
Edwar Edwar ◽  
Mokhamad Fakhrul Ulum ◽  
Rudy Priyanto
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Birth Weight ◽  
Growth Performance ◽  
Growth Analysis ◽  
First Generation ◽  
Body Weight Gain ◽  
Cross Breeding ◽  
Daily Body Weight ◽  
The Difference

ABSTRAK. Tujuan penelitian ini adalah mengevaluasi kinerja pertumbuhan sapi persilangan Belgian Blue (BB) dan sapi Peranakan Ongole (PO) pada turunan pertama (F1). Sapi persilangan (BB dan PO) yang digunakan sebanyak 15 ekor terdiri atas jantan 6 ekor dan betina 9 ekor, selain itu digunakan 8 ekor sapi PO betina yang dipelihara di Balai Embrio Ternak (BET) Cipelang Bogor. Peubah yang diamati adalah bobot lahir (BW), bobot sapih (WW) 205 hari, bobot 1 tahun (YW), pertambahan bobot badan harian dari lahir (GBW) sampai sapih (GWW) dan pertambahan bobot badan harian dari sapih (GWW) sampai umur 1 tahun (GYW). Data dianalisis secara deskriptif dan perbedaan antar sapi silangan (BB-PO) dengan sapi PO dilakukan uji t. Hasil analisis bobot badan dan pertumbuhan menunjukkan bahwa, bobot badan sapi silangan BB dan PO lebih tinggi dibandingkan dengan sapi PO pada WW 205 hari (165,2±21,3 kg dan 115±15,2 kg), YW (365 hari) (240,7±28,1 kg dan 194,9±26,1 kg) dan GBW sampai GWW (0,675±0,097 kg dan 0,441±0,059 kg). BW dan GWW sampai GYW tidak berbeda antara sapi silangan BB-PO dengan PO. Hasil penelitian ini menunjukkan bahwa program cross-breeding sapi BB dengan PO dapat meningkatkan kinerja bobot badan dan pertumbuhan.  (Growth performance evaluation of belgian blue and ongole crossbreed) ABSTRACT. The purpose of this study was to evaluate the growth performance of cross-breeding of Belgian Blue (BB) and Ongole Grade (PO) cattle in the first generation (F1). Crossbred of BB and PO cattle used as many as 15 individuals consisting of 6 males and 9 females, also, 8 individual PO females are used which are kept in the Livestock Embryo Center (BET) Cipelang, Bogor. The observed variables were birth weight (BW), weaning weight (WW) 205 days, 1-year weight (YW) 365 days, daily body weight gain from birth (GBW) to weaning (GWW) and daily body weight gain from weaning (GWW) until the age of 1 year (GYW). Data were analyzed descriptively and the difference between cross-breeding (BB-PO) cattle and PO cattle was analyzed by t-test. The results of body weight and growth analysis showed that crossbred BB and PO cattle were higher than PO cattle at WW 205 days (165.2 ± 21.3 kg and 115 ± 15.2 kg), YW (365 days) (240.7 ± 28.1 kg and 194.9 ± 26.1 kg ) and GBW to GWW (0.675 ± 0.097 kg and 0.441 ± 0.059 kg). BW and GWW to GYW do not differ between crossbred BB-PO and PO cattle. The results of this study indicate that the cross-breeding program for BB cattle with PO cattle breeds can improve the performance of body weight and growth.

scholarly journals Non-destructive Measurements of Biomass in Millet, Cowpea, Groundnut, Weeds and Grass Swards using Reflectance, and their Application for Growth Analysis

1995 ◽  
Vol 31 (1) ◽  
pp. 1-11 ◽  
Author(s):  
A. Buerkert ◽  
P. R. Lawrence ◽  
J. H. Williams ◽  
H. Marschner
Keyword(s):  
Arachis Hypogaea ◽  
Dry Matter ◽  
Growth Analysis ◽  
Pennisetum Glaucum ◽  
Growth Models ◽  
Physiological State ◽  
The Difference ◽  
Crop Growth Models ◽  
Non Destructive ◽  
Species Mixtures

SummaryA simple hand-held reflectometer was used to estimate the shoot dry matter of pearl millet (Pennisetum glaucum), groundnut (Arachis hypogaea), cowpea (Vigna unguiculata), weeds and grass swards non-destructively. While the instrument was able to predict shoot dry matter well for single, standing millet and cowpea plants and proved useful for a growth analysis of millet, its reliability was unsatisfactory for groundnut. For millet, the slope of two separate regressions between the difference of reflectance ratios and shoot dry matter, taken 10 days apart, was almost identical. This suggests a possible simplification in future crop growth models. The usefulness of the instrument for estimating dry matter in natural species mixtures such as weeds and grasses depended on the homogeneity of the mixture and the uniformity of their physiological state.Medición de la biomasa utilizando la reflexión

scholarly journals DAMPAK ALIH FUNGSI LAHAN PERTANIAN KE SEKTOR NON PERTANIAN TERHADAP KETERSEDIAAN BERAS DI KABUPATEN KLATEN PROVINSI JAWA TENGAH

2010 ◽  
Vol 25 (1) ◽  
pp. 38
Author(s):  
Catur Tunggal Basuki Joko P ◽  
Joko Purwanto ◽  
Rhina Uchyani Fajarningsih ◽  
Susi Wuri Ani
Keyword(s):  
Growth Analysis ◽  
Secondary Data ◽  
Pool Data ◽  
Land Conversion ◽  
Land Area ◽  
Total Consumption ◽  
Net Production ◽  
Agriculture Land ◽  
The Difference ◽  
Research Show

<p>The objective of this research were to calculate the rate of the agriculture land conversion and the impacts of the agriculture land conversion to rice availability in Klaten Regency. This research used secondary data (pool data) in periode of 1998-2007 twenty six districts. The models used in this research were growth analysis and difference of net production to total consumption (NPKt). The result of this research show that the growth rate of the low land and up land area in Klaten regency were -0,53% and 0,47% per year. Low land conversion was show positive value of the difference of net production to total consumption (NPKt) in Klaten Regency.</p>

Annual production of Typha orientalis Presl. in inland Australia

1986 ◽  
Vol 37 (5) ◽  
pp. 659 ◽  
Author(s):  
J Roberts ◽  
GG Ganf
Keyword(s):  
Demographic Data ◽  
Plant Production ◽  
Carbon Substrate ◽  
Emergent Macrophytes ◽  
Continuous Growth ◽  
A Value ◽  
Whole Plant ◽  
Aboveground Production ◽  
Harvest Data ◽  
The Difference

The annual aboveground production of T. orientalis was estimated from harvest data by three techniques. The first calculated production as the difference between maximum and minimum standing crop and gave a value of 1175 g m-2. Demographic data showed this was an underestimate. The second estimate by Smalley's method of 3824 g m-2 was considered an overestimate since no account was taken of stand variability. The third estimate, 2334 g m-2, used data fitted by splined regression and was considered the most reliable since it accounted for stand variability, continuous growth, shoot mortality and the translocation of carbon substrate. Annual aboveground production of inland T. orientalis was greater than most estimates from temperate climates, and whole plant production, 4379 g m-2, greatly exceeded the suggested maximum of 3000 g m-2 for freshwater emergent macrophytes.

Water Level Regulations and Fisheries in Rainy Lake and the Namakan Reservoir

1993 ◽  
Vol 50 (9) ◽  
pp. 1934-1945 ◽  
Author(s):  
Yosef Cohen ◽  
Paul Radomski
Keyword(s):  
Water Level ◽  
Interspecific Interactions ◽  
Water Levels ◽  
Fish Populations ◽  
Coregonus Clupeaformis ◽  
Spawning Habitat ◽  
Emergent Macrophytes ◽  
Dry Spells ◽  
The Difference ◽  
Yearly Maximum

The difference between the yearly maximum and minimum water levels (YMXR) is an index of lake dynamics: shoals are exposed and inundated, nutrients are oxidized and reduced, and the diversity and density of the aquatic plant community are affected. Shoals and emergent macrophytes provide spawning habitat for fish. The 5-yr moving variance of YMXR fluctuates regularly with periods of about 11.2 yr (periodicity of sunspot cycles). This reflects the effects of within-year consecutive periods of storms and dry spells. Water level regulations resulted in changes in both amplitudes and frequencies of YMXR compared with natural fluctuations. We established links between fluctuations in YMXR and fluctuations in fish populations. Water level regulations, through their effects on YMXR, corresponded to changes in interspecific interactions on Rainy Lake and the Namakan Reservoir. In both, walleye's (Stizostedion vitreum) fluctuations were synchronized with both those of lake whitefish (Coregonus clupeaformis) and northern pike (Esox lucius) more than those of either species with the other two. On the Namakan Reservoir, YMXR fluctuations were accentuated by water level regulation; on Rainy Lake, they were dampened. Regulations should consider frequencies and amplitudes of changes in water level and their effect on fish populations.

The Origin of the Moon

1962 ◽  
Vol 14 ◽  
pp. 149-155 ◽  
Author(s):  
E. L. Ruskol
Keyword(s):  
Chemical Composition ◽  
Solar System ◽  
The Moon ◽  
The Earth ◽  
The Difference ◽  
Origin Of The Moon

The difference between average densities of the Moon and Earth was interpreted in the preceding report by Professor H. Urey as indicating a difference in their chemical composition. Therefore, Urey assumes the Moon's formation to have taken place far away from the Earth, under conditions differing substantially from the conditions of Earth's formation. In such a case, the Earth should have captured the Moon. As is admitted by Professor Urey himself, such a capture is a very improbable event. In addition, an assumption that the “lunar” dimensions were representative of protoplanetary bodies in the entire solar system encounters great difficulties.

Influence of Cell Wall Composition on the Fossilisation of Bacteria and the Implications for the Search for Early Life Forms

1997 ◽  
Vol 161 ◽  
pp. 491-504 ◽  
Author(s):  
Frances Westall
Keyword(s):  
Cell Wall ◽  
Life Forms ◽  
Cation Binding ◽  
Positive Bacterium ◽  
Gram Positive ◽  
Gram Positive Bacteria ◽  
Transmission Electron ◽  
Hydrothermal Sediments ◽  
Identification Of Bacteria ◽  
The Difference

AbstractThe oldest cell-like structures on Earth are preserved in silicified lagoonal, shallow sea or hydrothermal sediments, such as some Archean formations in Western Australia and South Africa. Previous studies concentrated on the search for organic fossils in Archean rocks. Observations of silicified bacteria (as silica minerals) are scarce for both the Precambrian and the Phanerozoic, but reports of mineral bacteria finds, in general, are increasing. The problems associated with the identification of authentic fossil bacteria and, if possible, closer identification of bacteria type can, in part, be overcome by experimental fossilisation studies. These have shown that not all bacteria fossilise in the same way and, indeed, some seem to be very resistent to fossilisation. This paper deals with a transmission electron microscope investigation of the silicification of four species of bacteria commonly found in the environment. The Gram positiveBacillus laterosporusand its spore produced a robust, durable crust upon silicification, whereas the Gram negativePseudomonas fluorescens, Ps. vesicularis, andPs. acidovoranspresented delicately preserved walls. The greater amount of peptidoglycan, containing abundant metal cation binding sites, in the cell wall of the Gram positive bacterium, probably accounts for the difference in the mode of fossilisation. The Gram positive bacteria are, therefore, probably most likely to be preserved in the terrestrial and extraterrestrial rock record.

Structuring, Motions and Shapes of Corona Emission Line Profiles

1994 ◽  
Vol 144 ◽  
pp. 421-426
Author(s):  
N. F. Tyagun
Keyword(s):  
Emission Line ◽  
Filling Factor ◽  
Direct Relationship ◽  
Coronal Plasma ◽  
Line Of Sight ◽  
Line Profiles ◽  
The Difference ◽  
Yellow Line ◽  
Red Line

AbstractThe interrelationship of half-widths and intensities for the red, green and yellow lines is considered. This is a direct relationship for the green and yellow line and an inverse one for the red line. The difference in the relationships of half-widths and intensities for different lines appears to be due to substantially dissimilar structuring and to a set of line-of-sight motions in ”hot“ and ”cold“ corona regions.When diagnosing the coronal plasma, one cannot neglect the filling factor - each line has such a factor of its own.

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