scholarly journals Effect of Soil Conditioning on Soil Penetration Resistance and Traction Power Demand of Ploughing

2021 ◽  
Vol 67 (3) ◽  
pp. 113-123
Author(s):  
Géza Tuba ◽  
Györgyi Kovács ◽  
Lúcia Sinka ◽  
Pál Nagy ◽  
Arzu Rivera-Garcia ◽  
...  
Keyword(s):  
Soil Properties ◽  
Traction Force ◽  
Penetration Resistance ◽  
Untreated Plot ◽  
Power Demand ◽  
Soil Conditioning ◽  
Set Up ◽  
Positive Effect ◽  
Traction Power

Abstract Soil compaction and degradation due to improper tillage are problems involving significant natural and economic damages. On compacted soils, suitable cultivation can be implemented only with higher energy and traction force input. In our study, the effect of a soil conditioner (Neosol) was examined on the penetration resistance of the soil and the traction power demand for ploughing in the experiment set up in the East-Slovak Plain in 2017 ‒ 2018 to justify several preliminary results showing that long-term soil conditioning results in enhanced root system, improved soil structure, cultivability, water- and salt regime. We found a positive effect of Neosol application with both investigated parameters and its long-term effect was also justified. The penetration resistance values of the soil of the untreated plot were 17 ‒ 23% higher, while the traction power demand values were 9 ‒ 32% lower in comparison with the Neosol treated plot in the first and the second year of the study, respectively. We assume the cumulative positive effect of soil conditioning on the physical soil properties in the study area, therefore the long-term application of Neosol is recommended for farms having similar soil properties.

scholarly journals Effect of Soil Conditioning on the Moisture Content and the Salt Profile of the Soil Under Irrigation with Saline Water

2019 ◽  
Vol 65 (2) ◽  
pp. 77-87
Author(s):  
József Zsembeli ◽  
Lúcia Sinka ◽  
Arzu Rivera-García ◽  
Krisztina Czellér ◽  
Géza Tuba ◽  
...  
Keyword(s):  
Moisture Content ◽  
Saline Water ◽  
Research Work ◽  
Vegetable Production ◽  
Secondary Salinization ◽  
Soil Conditioning ◽  
Simple Drainage ◽  
Set Up ◽  
Positive Effect ◽  
Salt Profile

Abstract The research work was started on the preliminary knowledge that the risk of secondary salinization is high in the hobby gardens around Karcag as the water of the aquifers used for irrigation is saline, nevertheless irrigation in the drought periods is essential for vegetable production. A complex experiment was set up in 12 simple drainage lysimeters at the lysimeter station of the Research Institute of Karcag in 2012 in order to simulate the conditions of irrigation characteristic in the region with the goal of finding a solution to mitigate the harmful effects by means of optimization of irrigation. In 2017–2018 three approaches were applied for the scientific establishment of the problem studying the effect of different irrigation frequencies, different irrigation water qualities, and soil conditioning on the moisture content and the salt profile of the soil. The soil conditioner (Neosol) applied was found to have a positive effect on the water and salt regime of the soil, partly by creating a more favourable vertical distribution of the soil water, and partly preserving more moisture in the soil.

Research on the Wall Crack Grouting Technology of Brick-Concrete Structure

2014 ◽  
Vol 548-549 ◽  
pp. 1667-1671
Author(s):  
Bin Jia ◽  
Ke Li ◽  
Xiao Liu ◽  
Nai Qing Meng
Keyword(s):  
Complete System ◽  
Masonry Structure ◽  
Construction Technology ◽  
Repair Mortar ◽  
Grouting Material ◽  
Practical Engineering ◽  
Crack Repair ◽  
Set Up ◽  
Positive Effect

Wenchuan earthquake caused a large number of masonry structure cracks, crack grouting become a very important link in the process of engineering structure reinforcement repair. This paper makes the statistical analysis on the structural seismic damage crack characteristics first, then determine the mechanism and characteristics of the cracks. Analysis of the reinforcement and repair mortar bond strength and practical range, put forward some requirements for crack repair and grouting material. Combined with grouting equipment, formed an earthquake damage of structure crack grouting construction technology in practical engineering , set up a complete system of grouting technology. Have a positive effect for the long-term development of repair reinforcement technology in China.

Fertiliser responses of maize and winter wheat as a function of year and forecrop

2010 ◽  
Vol 58 (Supplement 1) ◽  
pp. 109-114 ◽  
Author(s):  
T. Árendás ◽  
P. Bónis ◽  
P. Csathó ◽  
D. Molnár ◽  
Z. Berzsenyi
Keyword(s):  
Winter Wheat ◽  
Soil Nutrient ◽  
Weather Conditions ◽  
Chernozem Soil ◽  
Forest Residues ◽  
Average Rainfall ◽  
Phosphorus And Potassium ◽  
Set Up ◽  
Positive Effect

The N, P and K effects of mineral fertilisers were examined in a long-term fertilisation experiment set up on chernozem soil with forest residues. The data from 20 experiments on winter wheat and 24 on maize were evaluated as a function of the year, the forecrop and the soil nutrient supplies.Of the two plant species, N effects were found to be greater for winter wheat. When sown after maize, the N responses of both wheat and maize were almost 1 t ha −1 greater than when winter wheat was the forecrop. The positive effect of phosphorus was only significant in winter wheat, while that of potassium was not significant for either species.In a wheat-wheat sequence, N fertiliser alone was only effective in wet years. In winter wheat, no phosphorus effects could be detected in any year without N fertilisation. In years with extreme weather conditions, P effects were only significant when wheat was grown after cereals.In dry years nitrogen only had a significant effect on the yield of maize after wheat if it was combined with phosphorus and potassium. In years with average or above-average rainfall maize was able to extract sufficient phosphorus for its development even from soils with poor P supplies; yield increases were limited by other factors.

INTERACTION OF POTASSIUM AND CALCIUM REGIMES OF LEACHED CHERNOZEM IN MULTI-YEAR APPLICATION OF FERTILIZERS AND AMELIORANT

1970 ◽  
pp. 53-58
Author(s):  
N. G. Myazin ◽  
А. N. Kozhokina ◽  
P. Т. Brekhov ◽  
P. I. Podrezov
Keyword(s):  
Sugar Beet ◽  
Soil Properties ◽  
Calcium Content ◽  
Mineral Fertilizers ◽  
Exchangeable Potassium ◽  
Protection Measures ◽  
Leached Chernozem ◽  
Soil Liming ◽  
Positive Effect

There is no alternative to soil liming as an environmental protection measures. It is difficult to overestimate the role that the application of calcium ameliorants has on soil properties. But besides a positive effect on soil properties, liming leads to some deterioration in the conditions of potassium plants nutrition. For studying this circumstance, researches were carried out in a long-term stationary experiment on leached chernozem in sugar beet agrocoenosis in the Voronezh region. It is established that the application of mineral fertilizers in doses of NPK of 120 and 240 kg / ha has resulted in a decrease of exchangeable calcium content in comparison with the backing variant by 0.7–1.2 mg-eq. / 100 g of soil. At the same time, there was an increase in soil availability of exchangeable potassium by one class in contrast with no treatment. In the case of soil liming, this process was less revealed — soil availability with exchangeable potassium remained at the level of control. With the application of mineral fertilizers on the back of organic aftereffect, the content of fixed potassium increased. The use of N120P120K120 provided 26 mg / kg of soil for a higher content of fixed potassium than the application of N240P240K240. The highest content of fixed potassium was observed with a joint consequence of manure and defecation - 649 mg / kg of soil. An increase in the activity of calcium ions in the soil led to a decrease in the activity of potassium ions. The interinfluence of these indicators was intensified by applying calcium ameliorants into the soil. The correlation coefficient between the pCa value and the potassium potential of the non-liming soil was - (–0.675) before sowing sugar beet and (–0.684) before harvesting, and on the ameliorated variants (–0.814) and (–0.500), respectively. Applying mineral fertilizers on various grounds increased crop yield by 16.0–18.2 t / ha in comparison with no treatment.

scholarly journals Effect of liming on the change of some agrochemical soil properties in a long-term fertilization experiment

2014 ◽  
Vol 60 (No. 4) ◽  
pp. 146-150 ◽  
Author(s):  
I. Jaskulska ◽  
D. Jaskulski ◽  
M. Kobierski
Keyword(s):  
Organic Carbon ◽  
Soil Properties ◽  
Soil Ph ◽  
Ph Value ◽  
Manganese Content ◽  
Farmyard Manure ◽  
Available Phosphorus ◽  
Long Term Experiment ◽  
Set Up

For 10 years (1999&ndash;2008) there was investigated the effect of liming on soil pH<sub>KCl</sub> and on organic carbon, available forms of macroelements and DTPA-extracted forms of some metals in 6 different fertilization objects in a long-term experiment set up in 1948: without fertilization (0), straw + NPK (STR NPK), NPK, farmyard manure (FYM), FYM NPK, FYM NPKMgCa. As a result of the application of 12.0 t/ha of lime (4.3 t Ca/ha), an increase was found not only in soil pH value but also in organic carbon, plant available phosphorus, zinc and copper contents and a decrease in manganese content. Despite significant changes in the soil properties, they still varied across the long-term fertilization objects.

scholarly journals Jatropha seed cake and organic waste compost: the potential for improvement of soil fertility

2016 ◽  
Vol 23 (1) ◽  
pp. 131-141 ◽  
Author(s):  
Jakub Elbl ◽  
Petr Sláma ◽  
Magdalena D. Vaverková ◽  
Lukáš Plošek ◽  
Dana Adamcová ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Soil Properties ◽  
Organic Waste ◽  
Plant Production ◽  
Seed Cake ◽  
Modern Agriculture ◽  
Jatropha Seed ◽  
The Impact ◽  
Positive Effect

Abstract Modern agriculture faces to new challenges and problems. Application of organic waste compost (Cp) and Jatropha seed cake (JSC) represents new possibilities to improve soil organic matter (SOM) and thus reduce the risk of soil degradation. Our paper presents results of laboratory experiment. Based on these results, we conclude that the application of organic substances has positive effect on soil fertility but the impact of individual substances is different. JSC has higher influence on soil properties (microbial activity and plant production) in the short term. Conversely, Cp affects soil properties in the long term. These properties are due to their chemical composition.

Crop rotations with clover and their productivity

2020 ◽  
Author(s):  
Ol'ga Gladysheva ◽  
Oksana Artyuhova ◽  
Vera Svirina
Keyword(s):  
Forest Soil ◽  
Crop Rotation ◽  
Gray Forest Soil ◽  
Arable Land ◽  
Perennial Grasses ◽  
Crop Rotations ◽  
Field Crop ◽  
Pure Steam ◽  
Positive Effect

The results of long-term research in experiments with crop rotations with different clover saturation are presented. It is shown that the cluster has a positive effect on the main indicators of vegetation of dark-gray forest soil. The introduction of two fields of perennial grasses into the six-field crop rotation significantly increases both the humus reserves and increases the productivity of arable land by 1.5–2 times compared to the crop rotation with a field of pure steam.

The depressing (negative) effect of oestradiol benzoate on the in vitro secretion of LH and FSH by the pituitary gland of the LRH-pretreated long-term ovariectomized rat changes into the augmentative (positive) effect after discontinuation of the LRH-pretreatment

1985 ◽  
Vol 110 (3) ◽  
pp. 329-337 ◽  
Author(s):  
G. A. Schuiling ◽  
H. Moes ◽  
T. R. Koiter
Keyword(s):  
Depressing Effect ◽  
Ovx Rats ◽  
Gonadotrophin Secretion ◽  
Oestradiol Benzoate ◽  
Negative Effect ◽  
Positive Effect ◽  
Perifusion System

Abstract. The effect of pretreatment in vivo with oestradiol benzoate on in vitro secretion of LH and FSH was studied in long-term ovariectomized (OVX) rats both at the end of a 5-day continuous in vivo pretreatment with LRH and 4-days after cessation of such LRH pretreatment. Rats were on day 0 sc implanted with osmotic minipumps which released LRH at the rate of 250 ng/h. Control rats were implanted with a piece of silicone elastomer with the dimensions of a minipump. On days 2 and 4 the rats were injected with either 3 μg EB or with oil. On day 5 part of the rats were decapitated and the in vitro autonomous (i.e. non-LRH-stimulated) and 'supra-maximally' LRHstimulated release of LH and FSH was studied using a perifusion system. From other rats the minipumps were removed on day 5 and perifusion was performed on day 9. On the 5th day of the in vivo LRH pretreatment the pituitary LH/FSH stores were partially depleted; the pituitaries of the EB-treated rats more so than those of the oil-injected rats. EB alone had no significant effect on the content of the pituitary LH- and FSH stores. On day 9, i.e. 4 days after removal of the minipumps, the pituitary LH and FSH contents had increased in both the oil- and the EB injected rats, but had not yet recovered to control values. In rats not subjected to the 5-days pretreatment with LRH EB had a positive effect on the supra-maximally LRH-stimulated secretion of LH and FSH as well as on the non-stimulated secretion of LH. EB had no effect on the non-stimulated secretion of FSH. After 5 days of in vivo pretreatment with LRH only, the in vitro non-stimulated and supra-maximally LRH-stimulated secretion of both LH and FSH were strongly impaired, the effect correlating well with the LRH-induced depletion of the pituitary LH/FSH stores. In such LRH-pretreated rats EB had on day 5 a negative effect on the (already depressed) LRH-stimulated secretion of LH (not on that of FSH). EB had no effect on the non-stimulated LH/FSH secretion. It could be demonstrated that the negative effect of the combined LRH/EB pretreatment was mainly due to the depressing effect of this treatment on the pituitary LH and FSH stores: the effect of oestradiol on the pituitary LRH-responsiveness (release as related to pituitary gonadotrophin content) remained positive. In LRH-pretreated rats, however, this positive effect of EB was smaller than in rats not pretreated with LRH. Four days after removal of the minipumps there was again a positive effect of EB on the LRH-stimulated secretion of LH and FSH as well as on the non-stimulated secretion of LH. The positive effect of EB on the pituitary LRH-responsiveness was as strong as in rats which had not been exposed to exogenous LRH. The non-stimulated secretion of FSH was again not affected by EB. The results demonstrate that the effect of EB on the oestrogen-sensitive components of gonadotrophin secretion consists of two components: an effect on the pituitary LRH-responsiveness proper, and an effect on the pituitary LH/FSH stores. The magnitude of the effect of EB on the LRH-responsiveness is LRH dependent: it is very weak (almost zero) in LRH-pretreated rats, but strong in rats not exposed to LRH as well as in rats of which the LRH-pretreatment was stopped 4 days previously. Similarly, the effect of EB on the pituitary LH and FSH stores is LRH-dependent: in the absence of LRH, EB has no influence on the contents of these stores, but EB can potentiate the depleting effect of LRH on the LH/FSH-stores. Also this effect disappear after cessation of the LRH-pretreatment.

Удобрение огурца в Западной Сибири

2018 ◽  
Author(s):  
Т.А. Кuznetsova ◽  
N.А. Коlpakov
Keyword(s):  
Organic Fertilizers ◽  
Control Variant ◽  
Positive Effect ◽  
Different Doses

Показано, что длительное применение как минеральных, так и органических удобрений в различных дозах и сочетаниях положительно влияет на урожайность огурца. Установлено, что в условиях 14-й ротации урожайность на всех вариантах опыта была выше, чем на контрольном варианте и составила 16,4–22,3 т/га, против 16,0 т/га в контроле.The authors show that the long-term use of both mineral and organic fertilizers in different doses and combinations has a positive effect on the yield of cucumber. It was found that under 14 rotation conditions the yield on all variants of the experiment was higher than on the control variant and amounted to 16.4–22.3 t/ha, against 16.0 t/ha on the control.

Possibilities and prospects of conservative therapy for endometriosis, as a chronical progressing disease (review of literature)

GYNECOLOGY ◽  
2020 ◽  
Vol 22 (1) ◽  
pp. 14-18 ◽  
Author(s):  
Tatyana Yu. Pestrikova ◽  
Elena A. Yurasova ◽  
Igor V. Yurasov
Keyword(s):  
Quality Of Life ◽  
Abnormal Uterine Bleeding ◽  
Modern Medicine ◽  
Reproductive Age ◽  
Aim Analysis ◽  
Scientific Publications ◽  
Terra Incognita ◽  
Positive Effect

Relevance. Endometriosis is a common gynecological disease that affects up to 10% of women of reproductive age worldwide and is the main cause of pain and infertility. Endometriosis is a disease, although it has been known for a long time, nevertheless, in many ways it represents terra incognita for modern medicine. Aim. Analysis of literature on the feasibility of long-term and the use of the drug dienogest 2 mg (Vizanne), which has a positive effect on the quality of life of patients with endometriosis. Materials and methods. To write this review, a search was made for domestic and foreign publications in Russian and international search engines (PubMed, eLibrary, etc.) over the past 13 years. The review included articles from peer-reviewed literature. Results. The review presents data on the difficulties of verifying the diagnosis of endometriosis due to a combination of this pathology with pain, infertility, abnormal uterine bleeding. The pathogenesis of the origin of endometriosis-associated pain is presented. The efficacy of the use of the drug dienogest (Vizanne), which has a powerful antiproliferative effect that reduces the main symptoms of endometriosis (pain, bleeding), is substantiated. The expediency of long-term and safe use of the drug dienogest (Vizanne), which has a positive effect on the quality of life of patients with endometriosis, has been proved. Conclusions. Numerous scientific publications confirm the feasibility of prolonged use of the drug dienogest (Vizanne), to achieve remission during endometriosis.

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