scholarly journals The impact of anthropogenically -controlled factors on the formation of root mass and yield of rice under drip irrigation in the lower volga region

2019 ◽  
pp. 41-43
Author(s):  
I. P. Kruzhilin ◽  
N. N. Dubenok ◽  
M. A. Ganiev ◽  
K. A. Rodin ◽  
A. B. Nevezhina
Keyword(s):  
Root System ◽  
Water Regime ◽  
Maximum Yield ◽  
Great Influence ◽  
Root Weight ◽  
Aerobic Rice ◽  
Root Mass ◽  
Influence Of Water ◽  
Soil Wetting ◽  
The Impact

The results of studies on the influence of water or nutrient regimes of the soil on the formation of the root system of rice when watering drip system. Thus, while maintaining the water regime of the soil not less than 80% of HB in the 0.6 m layer, the root mass was in the three years in the 0.4 m layer 4.96, and 0.6 m - 5.64 t/ha. In the variant where soil moisture was maintained at least 80% HB and the depth of soil wetting until the end of the tillering phase by 0.4 with a further decrease to 0.6 m, the plants differed in maximum foliage and habitus, which contributed to an increase in the root mass of aerobic rice in the layer of 0.4 m to 5.40, and in the layer of 0.6 m 6.14 t/ha. In the variant of the water regime of the soil with a moisture content of not less than 80% HB from sowing to the end of the tillering phase in a layer of 0.4 m, followed by a decrease to 0.6 m, and from wax to full ripeness of grain not less than 70% HB the volume of roots compared to the second option for three years in a layer of 0.4 m became less by 0.18 t/ha, and in a layer of 0.6 0.20 t/ha, but more than the first in a layer of 0.4 m by 0.26 m and 0.6 m 0.30 t/ha. Also had a great influence on the root system of aerobic rice. Thus, its lowest value, 5.46 t/ha for the three years, was formed when making N95P62K75 (5 t/ha). Making N114P74K90 (6 t/ha) increased root weight by 0.48 t/ha regarding the N95P62K75 dose (5 t/ha), but was below making N137P90K108 (7 t/ha) 0.60 t/ha. In the result of the conducted researches it was established that maximum yield of grain (of 6.95 t/ha) was obtained in variant water regime of soil 80% of NV in layers of 0.4 and 0.6 m, making N137P90K108 (7 t/ha). The minimum yield, 4.88 t/ha, was obtained in the variant of soil water regime of 80% of NV in a layer of 0.6 m with the introduction of N95P62K75 (5 t/ha).

scholarly journals Clonal diversity and genetic variation of the sedge Carex nigra in an alpine fen depend on soil nutrients

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e8887
Author(s):  
Christoph Reisch ◽  
Stefanie Meier ◽  
Christoph Schmid ◽  
Maik Bartelheimer
Keyword(s):  
Genetic Variation ◽  
Soil Nutrients ◽  
Water Regime ◽  
Soil Nutrient ◽  
Clonal Diversity ◽  
Successful Recruitment ◽  
Low Potassium ◽  
Influence Of Water ◽  
The Impact ◽  
Plant Susceptibility

In this study we analysed the impact of water regime and soil nutrients on the clonal diversity and genetic variation of the sedge Carex nigra in a central alpine fen. For our analysis, we established 16 study plots randomly distributed over the fen. We determined the exact elevation of each plot as an indicator for the water regime and measured the content of phosphorous and potassium in the soil of each plot. Clonal diversity and genetic variation of C. nigra were assessed with nuclear microsatellites using leaf material collected in 20 subplots along a diagonal cross within each study plot. The influence of water regime and soil mineral nutrients on clonal diversity and genetic variation was estimated by Bayesian multiple regression. Our study revealed a clear impact of soil nutrient conditions on clonal diversity and genetic variation of C. nigra, which increased with the concentration of phosphorous and decreased with the concentration of potassium. Key background to these findings seems to be the relative offspring success from generative as compared to clonal propagation. Phosphorous acquisition is essential during seedling establishment. Clonal diversity and genetic variation increase, therefore, at sites with higher phosphorous contents due to more successful recruitment. High levels of clonal diversity and genetic variation at sites of low potassium availability may in contrast be mainly caused by increased plant susceptibility to abiotic stress under conditions of potassium deficiency, which brings about more gaps in C. nigra stands and favors the ingrowth from other clones or recruitment from seeds.

scholarly journals Straw Removal Effects on Sugarcane Root System and Stalk Yield

Agronomy ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1048
Author(s):  
Paul L. A. Melo ◽  
Maurício R. Cherubin ◽  
Tamara C. A. Gomes ◽  
Izaias P. Lisboa ◽  
Lucas S. Satiro ◽  
...  
Keyword(s):  
Root System ◽  
Soil Surface ◽  
Dry Mass ◽  
Soil Conditions ◽  
Root Mass ◽  
Moderate Amount ◽  
Straw Mulch ◽  
Root Regrowth ◽  
Stalk Yield ◽  
The Impact

The sugarcane (Saccharum spp. L.) mechanical harvesting system leaves a large amount of straw mulch on the soil surface. The straw mulch may affect soil conditions, root regrowth, and sugarcane yield. Thus, this study assessed the response of sugarcane root system growth and stalk yield to different rates of straw removal. An experiment was conducted in a Rhodic Kandiudox with sand clay loam texture to test the impact of four rates of straw removal: no removal (18.9 Mg ha−1 of dry mass); moderate removal (8.7 Mg ha−1); high removal (4.2 Mg ha−1) and total removal on sugarcane root system and stalk yield. Higher concentrations of roots (60%) were found in the first 40 cm of soil. Moderate straw removal resulted in higher root mass (3.6 Mg ha−1) and stalk production (23 Mg ha−1 of dry mass). However, no straw removal reduced root mass by <40% (2099 kg ha−1) and reduced stalk yield by >20% (105 Mg ha−1). Through regression analysis, it was estimated that retaining between 8.5 and 13 Mg ha−1 of straw resulted in the highest root mass and stalk yield. Managing straw removal to retain a moderate amount enables producers to sustain suitable soil conditions for sugarcane root growth and stalk production while providing straw for industrial use.

scholarly journals Impact of Sowing Interval on the Yield and Yield Contributing Traits of Sesame (Sesamum indicum L.) under the Tropical Circumstance

2017 ◽  
Vol 50 (3) ◽  
pp. 83-94
Author(s):  
M. Hakeem ◽  
M. Waseem ◽  
D.M. Baloch ◽  
M.A. Khan ◽  
Q. Ali
Keyword(s):  
Maximum Yield ◽  
Seed Mass ◽  
Sowing Date ◽  
Sesamum Indicum ◽  
Rooting Depth ◽  
Root Weight ◽  
Significant Finding ◽  
Sowing Dates ◽  
Sesame Genotypes ◽  
The Impact

Abstract The experiment was conducted to study the impact of sowing interval on the yield and yield contributing traits of sesame (Sesamum indicum L.), under the tropical circumstance, during 2016, at the research area present near Faculty of Agriculture, Lasbela University of Agriculture, Water and Marine Science, Uthal, Balochistan. Experimental treatments were comprising three varieties of sesame, SV1 (TS-5), SV2 (TH-6) and SV3 (4002), and cultivated under different three sowing dates, at 15 days interval: S1 = 1st sowing (15 March 2016), S2 = 2nd sowing (1st April 2016) and S3 =3rd sowing (15 April 2016). The results of various observations, i.e. plant height at maturity (cm), 1000-seed weight (g), seed mass (t ha−1), yield index (%) rooting depth (cm) and root weight per plant was found to be significant both for the all the sowing dates and sesame genotypes. Non significant finding was observed in traits of biological yield per plant (g) and root-shoot ratio. Whereas interaction among all the treatment factors was non-significant. Maximum yield and yields contributing parameters was observed in S3 = 3rd sowing (15 April 2016) and sesame genotype SV1 (TS-5), followed by SV2 (TH-6), while minimum yield was noted in S3 = 3rd sowing (15 April 2016) and SV3 (4002) sesame genotypes. On the basis of the coastal agroclimatic condition of district Lasbela, it was concluded that maximum yield production was achieved from the sesame variety (TS-5), as compared to other two sesame (TH-6 and 4002) varieties. Sowing date of sesame at 15th April 2016 was more productive, as compared to the other sowing interval. Coastal climatic condition is feasible for sesame cultivation, especially for the sesame variety (TS-5).

scholarly journals Changes in the root mass and yield of rice depending on different water and food regimes drip irrigation in the lower Volga region

2020 ◽  
pp. 38-41
Author(s):  
Konstantin Anatolyevich Rodin ◽  
Ainagul Bekbaevna Nevezhina ◽  
Viktor Bisengalievich Narushev
Keyword(s):  
Drip Irrigation ◽  
Water Regime ◽  
Research Field ◽  
Root Mass ◽  
Subsequent Increase ◽  
Lower Volga Region ◽  
Food Regimes ◽  
Research Material ◽  
Influence Of Water

The article reflects some results of long-term research conducted in 2013-2015 at the research field of VNIIOZ. After analyzing the research material, the following results were obtained on the influence of water or nutrient regimes of the soil on the formation of the mass of rice roots during drip irrigation. So, when maintaining the water regime of the soil 100-80% MWHC in the 0.6 m layer, the root mass was 4.96 m in the 0.4 m layer and 5.64 t/ha in the 0.6 m layer. In the variant where the soil moisture was maintained at 100-80% MWHC in this variant, the aboveground part of the plants was more developed, which contributed to an increase in the root mass of rice in the 0.4 m layer to 5.40, and in the 0.6 m layer – 6.14 t / ha. In the variant of the water regime of the soil with a humidity of 100-80% MWHC from sowing to the end of the tillering phase in the 0.4 m layer with subsequent increase to 0.6 m, and from waxy to full ripeness of the grain is not less than 70% MWHC, the number of roots in comparison with the second option for three years in the 0.4 m layer was less by 0.18 t/ha, and in the 0.6 – 0.20 t/ha layer, but more than the first in the 0.4 m layer by 0.26 and 0.6 m – 0.30 t/ha. The applied doses of fertilizers had a greater impact on the root system of rice than the water regime of the soil. As a result of the research, it was found that the maximum grain yield (6.95 t / ha) was obtained under the water regime of the soil 100-80% MWHC sequentially in layers of 0.4 and 0.6 m with the introduction of N137P90K108 (7 t/ha). The lowest yield, 4.88 t / ha, was obtained in the variant of the water regime of the soil 100-80% MWHC in a layer of 0.6 m with the addition of N95P62K75 (5 t / ha).

Role of Brand experience in Fashion brands

2019 ◽  
Vol 118 (1) ◽  
pp. 57-64
Author(s):  
G. Aiswarya ◽  
Dr. Jayasree Krishnan
Keyword(s):  
Factor Analysis ◽  
Purchase Intention ◽  
Great Influence ◽  
Brand Experience ◽  
Brand Preference ◽  
Mediating Role ◽  
Confirmatory Factor ◽  
Selling Strategies ◽  
The Impact

Traditionally the products were pushed into the hands of customers by production and selling strategies; then the marketing strategy evolved which gained momentum by understanding the customer needs and developing products satisfying those needs. This strategy is most prevalent and what should be done to stand up in this most competitive scenario? The answer to this key question is to create an experience. The customers now also seek good experiences than other benefits. Brand experience has gained more attention, especially fashion brands. Previous studies demonstrate the role of the brand experience in brand equity and other consumer behavior constructs. But very little is known about the impact of brand experiences on fashion brands. The aim of this study is to develop a model which makes our understanding better about the role of Brand preference and Brand experience and its influence on purchase intention of the brand. An initial exploratory study is conducted using a focus group to generate items for the study. The items, thus generated are prepared in the form of a questionnaire and samples were collected.  Exploratory factor analysis is conducted and the reliability of the constructs is determined. These constructs are loaded onto AMOS to perform Confirmatory factor analysis. The results confirmed the scales used. We also noticed that Brand preference has a great influence on the Brand experience. Thereby the finding supports the role of the brand experience which tends to have a mediating role in influencing the purchase intention.

The Influence of Water Regime on the Performance of Aquatic Plants

1994 ◽  
Vol 29 (4) ◽  
pp. 127-132 ◽  
Author(s):  
Naomi Rea ◽  
George G. Ganf
Keyword(s):  
Deep Water ◽  
Aquatic Plants ◽  
Water Regime ◽  
Optimal Performance ◽  
Experimental Results ◽  
The Other ◽  
Full Potential ◽  
Influence Of Water ◽  
Emergent Species

Experimental results demonstrate bow small differences in depth and water regime have a significant affect on the accumulation and allocation of nutrients and biomass. Because the performance of aquatic plants depends on these factors, an understanding of their influence is essential to ensure that systems function at their full potential. The responses differed for two emergent species, indicating that within this morphological category, optimal performance will fall at different locations across a depth or water regime gradient. The performance of one species was unaffected by growth in mixture, whereas the other performed better in deep water and worse in shallow.

The Science of Goal Setting

2012 ◽  
Vol 19 (1) ◽  
pp. 13-25 ◽  
Author(s):  
Daniel Hayden ◽  
Fangzhou Deng
Keyword(s):  
Goal Setting ◽  
Diffusion Of Innovation ◽  
Social Marketing ◽  
Collective Behavior ◽  
Great Influence ◽  
Environmental Conservation ◽  
Marketing Campaign ◽  
Social Marketing Campaign ◽  
Social Marketing Campaigns ◽  
The Impact

Goal setting within social marketing campaigns is art and science. An analysis of Rare Pride conservation campaigns shows the quantitative, replicable relationship among the impact of these conservation campaigns with diffusion of innovation theory, and collective behavior theory that can guide marketers to set better goals. Rare is an environmental conservation organization that focuses on reducing community-based threats to biodiversity through a social marketing campaign called Pride. Pride campaigns work by removing barriers to change (whether they are technical, social, and political or something else) and inspiring people to make change happen. Based on the analysis of historical Pride campaign survey data, we found that the starting percentage of engagement has a great influence on the percentage change at the end of the campaign: The higher the initial adoption level of knowledge, attitude, and behavior change, the easier these measures are to improve. The result also suggests a difference in the potential of change with different audience segments: It is easiest to change influencer, then general public, and finally resource user who are the target of the social marketing campaign. In this article, we will analyze how to use diffusion of innovation and collective behavior theories to explain the impact of campaigns, as well as how to set more attainable goals. This article is consistent with similar research in the field of public health, which should help marketers set goals more tightly, allocate resources more effectively, and better manage donor expectations.

scholarly journals Influence of water regime on grape aromatic composition of Muscat of Alexandria in a semiarid climate

2021 ◽  
Vol 290 ◽  
pp. 110525
Author(s):  
Ignacio Buesa ◽  
Diego S. Intrigliolo ◽  
Juan R. Castel ◽  
Mar Vilanova
Keyword(s):  
Water Regime ◽  
Semiarid Climate ◽  
Influence Of Water

Dependence of efficiency of natural fish reproduction in water bodies of Kazakhstan from water level

2021 ◽  
pp. 32-41
Author(s):  
K.B. Isbekov ◽  
E.V. Kulikov ◽  
S.Zh. Asylbekova
Keyword(s):  
Water Content ◽  
Water Regime ◽  
Juvenile Fish ◽  
Hydrological Regime ◽  
Water Bodies ◽  
Fish Reproduction ◽  
Data Set ◽  
Commercial Fish ◽  
Level Of Significance ◽  
The Impact

The article deals with the relationship between the hydrological regime of water bodies and the efficiency of fish reproduction. The hydrological regime of water bodies in years of different water content influences the reproduction and, accordingly, the quantitative and qualitative composition of ichthyocenoses. The easiest way to assess the efficiency of fish reproduction is by such an indicator as the productivity of juveniles, i.e. the number of juvenile fish per unit area or volume. The material for this work was carried out in large fishing reservoirs of the Republic of Kazakhstan in the process of fishery research (2013–2018). Comparison of hydrological parameters and productivity of juveniles by years shows their relationship. Correlation coefficient between water content (runoff) of the river Zhaiyk and juvenile yield +0.73 (data set for 11 years, reliable for the level of significance p = 0.01). The yield of juvenile fish from Lake Balkhash has a high correlative dependence on the inflow of water into the lake (r = +0.826) (massif 2013–2018, reliable for the level of significance p = 0.05). Correlation analysis showed that the productivity of juvenile fish in the Kapshagai reservoir has an average degree of dependence on water content (average annual level) (r = +0.641, reliable for the level of significance p = 0.05). Regular relationships between the water regime and the efficiency of reproduction (productivity of juveniles) of fish have been established. The efficiency of natural reproduction of commercial fish species in modern conditions of the water regime, water withdrawal for economic needs and the impact of fishing is significantly reduced, but with the implementation of the reclamation measures proposed in the work, its partial restoration is possible.

Yield or profit: alternatives to the development of national crop production

Ekonomika APK ◽  
2021 ◽  
Vol 316 (2) ◽  
pp. 15-25
Author(s):  
Dmytro Zherlitsyn ◽  
Andrii Skrypnyk ◽  
Nataliia Klymenko ◽  
Kateryna Tuzhyk
Keyword(s):  
Grain Yield ◽  
Crop Production ◽  
Maximum Yield ◽  
Target Function ◽  
Optimization Methods ◽  
Econometric Analysis ◽  
Practical Significance ◽  
Moderate Increase ◽  
Production Research ◽  
The Impact

The purpose of the article is to determine with the help of econometric and optimization methods the priority strategies of agrarian business in the field of crop production and to compare with the existing leaders in the use of innovations in the field of crop production. Research methods. The study is based on the use of econometric analysis methods to build trends in grain yield dynamics in leading countries in the use of innovative agricultural technologies and optimization methods for the study of dominant strategies used by agricultural enterprises in crop production. Research results. As a result of using the declining marginal grain yield depending on the amount of costs, which are determined by the cost of importing technology per 1 ha, the optimal cost values for both maximum yield and maximum profit. It is shown that at certain time intervals the costs of farmers were excessively high not only in terms of profit optimization but also to optimize yields. It is assumed that taking into account the latest innovation trends, agribusiness will move to a strategy of profit maximization Scientific novelty. As a result of econometric analysis it is shown that the use as a target function of yield leads to a significant increase in the variability of this indicator, while a moderate increase in yield is accompanied by significantly less variability. Quantitative indicators of the impact of climate risks on grain yields in Ukraine have been obtained, which explain approximately 50% of the variance in the grain yield indicator in Ukraine. Practical significance. It is shown that the representation of marginal yield in the form of a decreasing linear function is confirmed in practice. Further research, which in the presence of detailed information on the production processes of individual enterprises can be conducted by panel regression (observation points are spaced in space and time), can provide a more detailed picture of the efficiency of individual production components in their areas of interaction. Tabl.: 4. Figs.: 3. Refs.: 19.

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