scholarly journals Evaluation of glassy frits as micronutrient fertilizers. II. Manganese frits.

1967 ◽  
Vol 15 (1) ◽  
pp. 21-30
Author(s):  
C.H. Henkens ◽  
K.W. Smilde

In pot and field tests MnSO4 and the frits FTE Z 4 (13 % Mn), HZ 1 (15.9 % Mn) and HZ 17 (21 % Mn) increased reducible soil Mn for at least 1 1/2-2 years. Mn content of pasture increased four-fold in the first cut after application of 400 kg/ha MnSO4 but sharply decreased in later cuts and became negligible by the second year. 400 kg/ha HZ 17 did not affect pasture Mn. In peas 400 kg of soil- or foliar applied MnSO4 controlled marsh spot better than 800 kg HZ 1; spraying at the middle and again at the end of the blooming stage gave the best control. With sugar beet, soil dressings of MnSO4, HZ 1 and HZ 17 equally increased yield, sugar production and leaf Mn, and decreased incidence of Mn deficiency. When the rates of these fertilizers were increased from 100, 179 and 86 kg respectively to 400, 714 and 343 kg, sugar production was not significantly improved; leaf Mn and incidence of deficiency symptoms responded to the higher Mn rates. Soil application was rather better than foliar treatment. No treatment controlled Mn deficiency throughout the entire season. The % of Mn-deficient plants was related, negatively, to leaf and reducible soil Mn, but not to yield. Soil-applied Mn did not control gray spot in oats or increase yields but sprayed Mn did. (Abstract retrieved from CAB Abstracts by CABI’s permission)

1965 ◽  
Vol 13 (4) ◽  
pp. 392-407 ◽  
Author(s):  
C.H. Henkens ◽  
E. Jongman

Movement of foliar applications of Mn was investigated. Mn applied to the leaf was translocated to other parts of the plant via the roots; in the leaf, upward movement predominated. Redistribution of Mn from the roots was insufficient to prevent Mn deficiency in the foliage formed after spraying; where the soil Mn supply was insufficient, repeated spraying was necessary. In wheat, oats and sugar-beet, spraying was best done as soon as Mn deficiency symptoms became evident, and again 4 weeks later. Control of marsh spot of peas was best achieved by spraying at mid-bloom and again just after flowering.-R.B. (Abstract retrieved from CAB Abstracts by CABI’s permission)


1991 ◽  
Vol 9 (2) ◽  
pp. 97-100 ◽  
Author(s):  
Timothy K. Broschat

Abstract Queen palms (Syagrus romanzoffiana (Chamisso) Glassman) grown in several types of sewage sludge compost media developed severe Mn deficiency symptoms. Seventy of the symptoms was correlated with DTPA-extractable Mn levels in the media and with leaf Mn content, but not with total media Mn. Compost media tied up over 70% of Mn added to samples within one hour, versus 62% or less for a pine bark, sedge peat, and sand medium. Analysis of autoclaved media samples suggested that some of the Mn tie up in garbage and yard trash composts is caused by microorganisms, but microorganisms had little effect on the binding potential of sludge and manure composts.


2008 ◽  
Vol 53 (3) ◽  
pp. 173-181
Author(s):  
S. Radivojevic ◽  
Irena Dosenovic ◽  
V. Filipovic ◽  
R. Rozic

Sugar beet varieties' micro trials were conducted at Kikinda site in 2005 and at five localities from the provincial trial network in 2006. The micro trials were set according to standard methods with 5 replications each year. Sugar beet was harvested at two periods in both years. Chemical analyses were conducted at the laboratories of the Faculty of Technology. The obtained data were processed according to the standard methods used in the Serbian sugar industry. Statistical analysis was performed using two-way ANOVA procedures. The results showed that varieties with triple tolerance to diseases (Solea and Gazeta) had marked performance in the trial at Kikinda site as compared to other varieties. Variety Solea was the highest in granulated sugar yield (10.941 t/ha) while control had 6.565 t/ha in the second harvest term at Kikinda site. The lowest infestation level with Cercospora beticola was recorded for the above mentioned varieties with triple tolerance and which were scored with 1.8 and 1.3 points, respectively, in the ranking scale that ranged from 0 to 5 points. Similar results were obtained in the second year of experiment. Variety Prestige, also triple tolerant to diseases, showed the best performance in the granulated sugar yield, yielding 13.969 t/ha. This variety showed the best tolerance to Cercospora beticola, being scored with only 0.4 points on the ranking scale for infestation level. Accordingly, the triple tolerant varieties of sugar beet were among the highest in the root and granulated sugar yields with equal number of treatments against Cercospora beticola.


1969 ◽  
Vol 53 (1) ◽  
pp. 14-27
Author(s):  
G. Samuels ◽  
Alex G. Alexander

Sugarcane variety M. 336 was grown in solution culture for 3 months under 3 Mn levels (0, 10, and 100 p.p.m.) and 3 Si levels (0, 50, and 500 p.p.m.) to study the influence of various levels of Mn and Si on growth, nutrient composition, and enzyme and sugar activity. The uptake of Mn by the immature sugarcane plant was definitely suppressed by increasing Si levels in the nutrient medium. As the Mn content of the plant dropped Si content increased. However, the converse did not hold, for when the cane plant was faced with an excessive supply of Mn, it attempted to compensate by increasing its Si uptake. High-Si X high-Mn treatment severely stunted growth, but yielded the maximum sucrose values recorded. Leaf-protein content was highest with all plants at the high Si level, but meristem protein reflected a reverse response. The greatly retarded growth caused by high Si and high Mn was accompanied by marked suppression of both starch phosphorylase and the phosphatases. Polyphenol oxidase showed a greater sensitivity to variable Mn and Si than any other enzyme assayed. Possible roles of Mn and Si in the mechanisms of auxin and protein synthesis are discussed.


1969 ◽  
Vol 38 (2) ◽  
pp. 96-104
Author(s):  
L. Rivera-Brenes ◽  
J. I. Cabrera ◽  
L. F. Colón

A grazing trial was carried out at Yabucoa, on the eastern coast of Puerto Rico to determine the usefulness for this purpose of several grasses and a grass-legume mixture. It followed the same pattern and procedure as those which had been performed previously at the Main Station Farm located in the northern humid section of the Island. In the trial, which lasted for 2 years, Pangola grass, Pará grass, St. Augustine grass, and a Guinea grass-tropical kudzu combination were compared as to carrying capacity and other characters to determine their pasture values. The carrying capacities of these grasses were as follows: Pangola, 1.12; Guinea-tropical kudzu, 1.42; St, Augustine, 1.23; and Para grass, 0.87 head per acre. The gross returns per acre for the first year were, $118, $137, $97, and $87, respectively. For the second year they were: $159, $179, $124, and $68, respectively. Besides the information obtained on the carrying capacity of the pastures, the results show that well-managed pastures are at least as profitable as many of the cash crops actually grown in the Island. This does not take into consideration additional soil- and water-conservation benefits which accrue from having the soil covered by a sod. Pangola and St. Augustine grasses are good pasture crops that can be used in the eastern coastal region satisfactorily. The Guinea-tropical kudzu mixture, however, is better than these grasses by themselves. The superiority of the legume-grass combination was again demonstrated by the results of this experiment. Pará grass was not well adapted for grazing in the light soil in which the experiment was planted.


Author(s):  
Lubov Belyaeva ◽  
Michail Pruzhin ◽  
Alla Ostapenko ◽  
Valentina Gurova

Introduction. Technological aids play a special role in sugar production technology, but their complex effectiveness requires a comprehensive and in-depth study. The research objective was to establish the patterns of change in the technological indicators of semi-finished products obtained from bacterially infected sugar beets with the combined use of an enzyme preparation, antimicrobial agent, and defoamer. Study objects and methods. The study involved such semi-finished products as juice (diffusion, pre-defecated, first and second saturation) and syrup, the quality of which was determined according to standard methods. The laboratory experiment was carried out on the basis of the second-order D-optimal Box-Behnken plan for three factors at three levels. Results and discussion. The research revealed positive dynamics of the following technological indicators: sucrose content, deposition rate, turbidity, chromaticity, and general purification effect. The sugar beet had the second degree of infection with mucous bacteriosis. Purified juice underwent lime-carbon dioxide purification and thickening under the combination of enzyme preparation Dextrasept 2, antimicrobial agent Betasept, and antifoam agent Voltes FSS 93. The greatest increase in sucrose at the level of 1.1% by DM weight was confirmed by a higher overall effect of purification of diffusion juice (2.2 %). The values of turbidity of the purified juice and syrup were below the threshold values. The low values resulted from the increase in the sedimentation rate of the pre-defective juice and the juice of the first saturation by an average of 4.1 and 3.2 times, respectively, due to the effective removal of high molecular weight compounds. The share of the enzyme preparation was 40–71%, antimicrobial agent – 19–49%, defoamer – 1.6–6.5%. The values of the multicriteria optimization parameter corresponded with technological indicators. The optimal combination (per 1000 tons of beets) included 6–8 kg of Dextrasept 2, 1.5–2.0 kg of Betasept, and 15–20 kg of Voltes FSS 93. As a result, the yield of white sugar increased by 0.25%. Conclusion. The regression dependencies can be recommended for predicting the main technological indicators of semi-finished products. The resulting data makes it possible to determine the effectiveness of the combined use of an enzyme preparation, antimicrobial agent, and defoamer in sugar production. Further research will identify the patterns of multifactorial interaction of these preparations.


1991 ◽  
Vol 116 (3) ◽  
pp. 351-358 ◽  
Author(s):  
P. J. Last ◽  
K. M. R. Bean

SUMMARYField experiments in 1987 and 1988 on peaty-loam, Mn-deficient soils of the Adventurers series in Cambridgeshire, UK, tested the response of sugarbeet to three forms of manganese fertilizer supplied as foliar sprays. The influence of a wetter and an adjuvant on manganese absorption and growth was also investigated.Cutonic and chelated forms of Mn, when applied at standard rates, were inefficient at increasing Mn concentrations in plants and alleviating deficiency symptoms during early summer. Mn concentrations in foliage increased rapidly after spraying with manganese sulphate, and most of the deficiency symptoms disappeared. These benefits were usually enhanced when manganese sulphate sprays were used with an adjuvant.Averaged over both years, yield without Mn was 8·83 t sugar/ha; the largest yield, 9·56 t/ha, was obtained with manganese sulphate plus adjuvant. Smaller benefits were obtained with the other forms of Mn. The adjuvant, when used with chelated Mn, appeared to depress sugar yields in both years. The likelihood of reducing the number of sprays required to control Mn deficiency on Fen soils was improved by using an adjuvant with manganous sulphate sprays.


2019 ◽  
Vol 220 (3) ◽  
pp. 1463-1480
Author(s):  
S Szalai ◽  
K Szokoli ◽  
E Prácser ◽  
M Metwaly ◽  
M Zubair ◽  
...  

SUMMARY While traditional geoelectric array configurations, such as the Wenner–Schlumberger or the dipole–dipole, can provide very good images of 1-D or robust 2-D structures, they are not sufficiently sensitive to those inhomogeneities that have a small effect on the surface electrical potential distribution. The detection and description of such inhomogeneities become possible by applying quasi-null arrays, which provide very small (close to zero) signals above a homogeneous half-space. The imaging properties of the members of an array series containing such arrays, the so-called γ11n arrays (n = 1–7), are demonstrated and compared to those of the most popular traditional arrays. Although the field applicability of the quasi-null arrays has been heavily questioned, it was demonstrated by our quasi-field analogue modelling experiments. The quasi-field tests also validated all of the numerical modelling results as follows: (1) many or all of the γ11n arrays were able to detect prisms and vertical sheets located at depths larger than those detectable by traditional geoelectric arrays, including the optimized Stummer configuration; (2) the horizontal resolution of the γ11n arrays proved to be better than the horizontal resolution of traditional arrays; (3) with n increasing, the γ11n arrays proved to be less sensitive to 1-D, but more sensitive to 2-D bodies. In case of high n values, the γ11n arrays may even be entirely insensitive to any 1-D structure. On the basis of the quasi-field experiments, γ11n arrays are expected to be very efficient to indicate bodies, or variations in time that only have a small impact on the surface electrical potential distribution (e.g. caves, mines, tunnels, tubes, cables, fractures, dykes), or small changes in the subsurface conditions (monitoring of dams or waste deposits). Data acquisition by both a traditional and a γ11n array, individual inversion of their data, and a joint interpretation of the results are recommended to obtain both a robust image and fine details of the subsurface.


2020 ◽  
Vol 159 ◽  
pp. 03002
Author(s):  
Gulzira Zhaxygulova ◽  
Maiya Myrzabekova ◽  
Guzel Sadykova

Beet sugar production is one of the material-intensive industries, where the volume of raw and auxiliary materials used in production is several times higher than the output of finished products. It is also a source of multi-tonnage secondary resources, i.e. by-products and production waste, the main ones beingAbeet pulp, molasses and filtration sludge. Against the background of the implementation of the Sectoral Program of Beet Sugar Production Development in the Republic of Kazakhstan for 2018-2027, there is a need to create a concept of ecologization of production, which will provide for the development of fundamentally new technologies to ensure minimum waste, combining environmentally friendly methods with cost-effective production of sugar beet and by-products. The bet should be made on low-cost technologies that will minimize production costs and environmental impact. In this article possible variants of sugar beet processing technologies with complex deep processing of waste are offered. The comparison of traditional technology and various variants of progressive technologies of sugar beet processing and production of new products from secondary resources was carried out, which allowed to determine revenue from complex processing of 1 ton of sugar beet.


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