scholarly journals CHLOROPHYLL CONTENT AND ITS RELATION TO PRODUCTIVITY OF CROPS AND WEEDS IN A TROPICAL AGROECOSYSTEM AT GUJAR LAKE MARGIN, INDIA

2016 ◽  
Vol 23 ◽  
pp. 39-44
Author(s):  
Mayank Singh ◽  
Mahendra Pratap Singh
Keyword(s):  
Net Primary Productivity ◽  
Cynodon Dactylon ◽  
Chlorophyll Concentration ◽  
Increasing Trend ◽  
Winter Crop ◽  
Total Crop ◽  
In The Beginning ◽  
Relationship Of ◽  
Tropical Agroecosystem ◽  
Lake Margin

The paper deals with evaluation of magnitude of changes in chlorophyll concentration, chlorophyll density and relationship of chlorophyll density with net primary productivity of mixed winter crop (wheat and mustard) community at Gujar lake margin in the district Jaunpur (U.P.). The chlorophyll concentration of each component of crops, dominant weed Cynodon dactylon (Linn.) Pers. and ‘other weeds’ have shown increasing trend in the beginning and reached their peak values at the same time (75-90 days). Thereafter, chlorophyll concentration have declined sharply. Maximum chlorophyll density value of total crop (wheat and mustard) was 2015.77 mg m-2 and for total weeds was 810.08 mg m-2, both at the age of 90 days of crop. There was a significant positive correlation between productivity and chlorophyll density of total crop (r = 0.903, p = 0.002) and total weeds (r = 0.580, p = 0.131).ECOPRINT 23: 39-44, 2016

scholarly journals Chlorophyll content and its relation to productivity of crops and weeds in a tropical agroecosystem at Gujar lake margin

2016 ◽  
Vol 22 ◽  
pp. 1-6
Author(s):  
Mayank Singh ◽  
Mahendra Pratap Singh
Keyword(s):  
Net Primary Productivity ◽  
Cynodon Dactylon ◽  
Chlorophyll Concentration ◽  
Increasing Trend ◽  
Winter Crop ◽  
Total Crop ◽  
In The Beginning ◽  
Relationship Of ◽  
Tropical Agroecosystem ◽  
Lake Margin

The paper deals with evaluation of magnitude of changes in chlorophyll concentration, chlorophyll density and relationship of chlorophyll density with net primary productivity of mixed winter crop (wheat and mustard) community at Gujar lake margin in the district Jaunpur (U.P.). The chlorophyll concentration of each component of crops, dominant weed Cynodon dactylon (Linn.) Pers. and ‘other weeds’ have shown increasing trend in the beginning and reached their peak values at around 75-90 days. Thereafter, values declined sharply. Maximum chlorophyll density value of total crop (wheat and mustard) was 2015.77 mg m-2 and for total weeds was 810.08 mg m-2, both at the age of 90 days of crop. There was a significant positive correlation between productivity and chlorophyll density of total crop and total weeds.ECOPRINT 22: 1-6, 2015

scholarly journals Effects of climatic factors on the net primary productivity in the source region of Yangtze River, China

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Zhe Yuan ◽  
Yongqiang Wang ◽  
Jijun Xu ◽  
Zhiguang Wu
Keyword(s):  
Climate Change ◽  
Primary Productivity ◽  
Yangtze River ◽  
Net Primary Productivity ◽  
Climatic Factors ◽  
Source Region ◽  
Primary Reason ◽  
Vegetation Types ◽  
Temperature And Precipitation ◽  
Increasing Trend

AbstractThe ecosystem of the Source Region of Yangtze River (SRYR) is highly susceptible to climate change. In this study, the spatial–temporal variation of NPP from 2000 to 2014 was analyzed, using outputs of Carnegie–Ames–Stanford Approach model. Then the correlation characteristics of NPP and climatic factors were evaluated. The results indicate that: (1) The average NPP in the SRYR is 100.0 gC/m2 from 2000 to 2014, and it shows an increasing trend from northwest to southeast. The responses of NPP to altitude varied among the regions with the altitude below 3500 m, between 3500 to 4500 m and above 4500 m, which could be attributed to the altitude associated variations of climatic factors and vegetation types; (2) The total NPP of SRYR increased by 0.18 TgC per year in the context of the warmer and wetter climate during 2000–2014. The NPP was significantly and positively correlated with annual temperature and precipitation at interannual time scales. Temperature in February, March, May and September make greater contribution to NPP than that in other months. And precipitation in July played a more crucial role in influencing NPP than that in other months; (3) Climatic factors caused the NPP to increase in most of the SRYR. Impacts of human activities were concentrated mainly in downstream region and is the primary reason for declines in NPP.

Donation-based crowdfunding as corporate social responsibility activities and financing

2018 ◽  
Vol 43 (2) ◽  
pp. 79-88 ◽  
Author(s):  
Arief Rijanto
Keyword(s):  
Corporate Social Responsibility ◽  
Social Responsibility ◽  
Synergistic Effects ◽  
Project Financing ◽  
Asian Countries ◽  
The One ◽  
In The Beginning ◽  
Corporate Social ◽  
Relationship Of ◽  
The Relationship

Both corporate social responsibility (CSR) activities and donation-based crowdfunding have potential synergistic effects to generate funds, but fundraisers face competition and challenges to achieve their donation target. For instance, on the one hand, CSR initiatives may create the opportunity to generate funds through crowdfunding. On the other hand, crowdfunding can be used to micro fund many social activities in line with a company’s CSR goals. This study explores the relationship among successful donation fundraisers in crowdfunding activities that have the potential to become CSR activities. Specifically, the study examines the relationship of the value and size of funds raised in the beginning (first day) of fundraising effort with its target funds by the fundraiser and type of activities. Data from crowdfunding activities in Southeast Asian countries are used to examine the funds raised through donations by comparing trends, cultures, and characteristics of fundraisers using donation-based crowdfunding. The results of the study show that the value of funds raised in the beginning (first day) has a significant positive correlation with small targeted funds. Art, culture, and product-based activities of crowdfunding show the potential to have synergistic effects with CSR activities, and they tend to be correlated with successful project financing in Southeast Asia.

Relationship of intertidal surface sediment chlorophyll concentration to hyperspectral reflectance and chlorophyll fluorescence

2006 ◽  
Vol 29 (2) ◽  
pp. 183-196 ◽  
Author(s):  
Jacco C. Kromkamp ◽  
Edward P. Morris ◽  
Rodney M. Forster ◽  
Claire Honeywill ◽  
Scott Hagerthey ◽  
...  
Keyword(s):  
Chlorophyll Fluorescence ◽  
Surface Sediment ◽  
Chlorophyll Concentration ◽  
Hyperspectral Reflectance ◽  
Relationship Of ◽  
Intertidal Surface

scholarly journals Characterizing and Predicting Reviews for Effective Product Marketing and Advancement

2021 ◽  
pp. 389-396
Author(s):  
Aihsan Suhail ◽  
Halima Sadia ◽  
Faiyaz Ahmad
Keyword(s):  
Analyst Forecast ◽  
Online Surveys ◽  
Rating Score ◽  
Web Based ◽  
Product Marketing ◽  
Edge Based ◽  
In The Beginning ◽  
Effective Product ◽  
Relationship Of ◽  
The Relationship

Online surveys have become a significant wellspring of data for clients prior to settling on an educated buy choice. Early audits of an item will in general exceptionally affect the ensuing item deals. In this paper, we step up and study the conduct qualities of early reviewer through their posted audits on our shopping gateway. In explicit, we partition item lifetime into three back to back stages, in particular early, lion's share. A client who has posted a survey in the beginning phase is considered as an early analyst. We quantitatively describe early reviewer dependent on their rating practices, the supportiveness scores got from others and the relationship of their surveys with item prevalence. We have tracked down that (1) an early analyst will in general relegate a higher normal rating score; and (2) an early reviewer will in general post more supportive audits. Our examination of item surveys additionally demonstrates that early reviewers appraisals and their got support scores are probably going to impact item prominence. By survey audit posting measure as a multiplayer rivalry game, we propose a novel edge based implanting model for early analyst forecast. Broad investigations on two diverse web based business datasets have shown that our proposed approach beats various cutthroat baselines.

scholarly journals ANALYSIS OF TREND AND VARIABILITY OF SUMMER SEASON VISIBILITY AND TEMPERATURE IN SAHEL ZONE OF NIGERIA

2020 ◽  
Vol 4 (3) ◽  
pp. 489-495
Author(s):  
Mukhtar Balarabe ◽  
Bello Saadu
Keyword(s):  
Meteorological Data ◽  
Negative Relationship ◽  
Negative Temperature ◽  
Summer Season ◽  
Climate Data ◽  
The Past ◽  
Increasing Trend ◽  
Relationship Of ◽  
Threat To Life

The variation of climate in the past on different time scale in Nigeria has generated a lot of concern and is still posing a threat to life and properties. Meteorologist and climatologist in Nigeria are working hard to address this problem. This study assessed the recent trend and variability of summer season`s visibility and temperature for Sahel zone of Nigeria. The long-term (1988-2017) summer seasons meteorological data derived from National Oceanic Atmospheric Agency-National Climate Data Centre (NOAA-NCDC) were used. A significant decreasing trend in visibility and increasing trend in temperature were detected during the entire period of study. The overall averages were 14.71 ± 4.17 km and 24.54 ± 4.19  respectively. The trends were found more significance in the last ten years. The Decades` means are 19.38± 3.05, 13.76 ± 2.09, 10.98 ± 1.28 km  and 20.60 ± 4.72◦C, 25.78 ± 2.54 ◦C and 27.25 ± 0.79  ◦C for the first, second and third decades respectively. Standardize anomaly chart revealed that over the period of study, positive visibility anomaly correspond to negative temperature anomaly and vice visa. Their correlation at p< 0.05 significant level showed a negative relationship of 0.54 over the thirty years period. However, decade analysis showed a positive correlation of 0.47 and negative correlations of 0.61 and 0.74 for the first, second and third decades respectively. These suggest that summer season of the recent decades are dustier than the previous ones and that, summer season of the recent decades become hotter than the previous decades

scholarly journals PATRON-CLIENT SOCIAL RELATIONSHIP BETWEEN PALM OIL FARMERS AND TAUKE IN KREUNG ITAM VILLAGE TADU RAYA DISTRICT NAGAN RAYA DISTRICT

2021 ◽  
Vol 3 (1) ◽  
pp. 33-42
Author(s):  
Khori Suci Maifianti ◽  
Dedy Darmansyah ◽  
Ikhwanul Muslimin
Keyword(s):  
Palm Oil ◽  
Social Relationship ◽  
Economic Status ◽  
Fresh Fruit Bunch ◽  
Economic Relations ◽  
Client Relationship ◽  
Cooperative Relationship ◽  
In The Beginning ◽  
Relationship Of ◽  
The Relationship

Krueng Itam village is one of the villages where the majority of the residents work as palm oil farmers and depend on palm oil plantations. In marketing to sell FFB (Fresh Fruit Bunch) palm oil farmers still rely on collector traders (agents) which in this case is referred to by the term "Tauke Sawit" (toke sawit). In the beginning, the relationship between palm oil farmers and the Tauke was limited to economic relations, such as the sale and purchase relationship between sellers and buyers. But in its development, the relationship turns into a relationship of dependence and interest that leads to a patron-client relationship. This study used a descriptive qualitative method with data collection techniques through observation and interview process that is expected to be able to provide an overview of the social relationship between tauke and farmers. Based on the results of the study, the relationship between tauke and palm oil farmers is a patron- client relationship where palm oil tauke as the patron and palm oil farmers as clients. Palm oil farmers need tauke to accomodate the harvest of palm oil FFB and tauke needs palm oil FFB from farmers to be sold to Palm oil mills. In this cooperative relationship, farmers will usually borrow money for capital needs and others to the tauke, this makes the farmers' dependence on the tauke become greater so that each of them will maintain the relationship by respecting the existing norms so that the relationship has been established will not be broken easily. The relationship of patron-clients is more visible in the relationship between tauke and small farmers, this is because there is a clear difference in socio-economic status between the two, so that the tauke as a patron play a big role.

scholarly journals Crop Weather Relationships of Fodder Sorghum Varieties under Different Sowing Times in Southern Agro Climatic Zone of Andhra Pradesh

2020 ◽  
pp. 20-28
Author(s):  
K. Saimaheswari ◽  
T. Prathima ◽  
D. Subramanyam ◽  
P. Latha
Keyword(s):  
Andhra Pradesh ◽  
Climatic Conditions ◽  
Day Length ◽  
Growth Stages ◽  
Sowing Time ◽  
Agricultural College ◽  
Sunshine Hours ◽  
Increasing Trend ◽  
Relationship Of ◽  
Different Growth Stages

Field experiment was carried out during summer, 2018 at S. V. Agricultural College, Tirupati, Acharya N. G. Ranga Agricultural University to study the crop weather relationship of fodder sorghum varieties under different times of sowing. The experiment was in four dates of sowing (I Fortnight of January, II Fortnight of January, I Fortnight of February and II Fortnight of February) with varieties (CSV 21 F, CSV 30 F and CSV 32 F). Results are revealed that among the four times of sowing, different meteorological indices GDD, HTU, PTU, and TUE varied across the different growth stages. Early sowing (I Fortnight of January) had favorable agro-climatic conditions particularly temperature, day length and sunshine hours interms of required accumulation of GDD, PTU and HTU from sowing to harvest compared to other dates of sowing. Total requirement of accumulated GDD, HTU and PTU showed increasing trend with extension of sowing time from I Fortnight of January to II Fortnight of February. The CSV 32 F variety accumulated maximum GDD from sowing to until harvest.

scholarly journals Spatio-Temporal Variation in AOD and Correlation Analysis with PAR and NPP in China from 2001 to 2017

2020 ◽  
Vol 12 (6) ◽  
pp. 976 ◽  
Author(s):  
Xin Li ◽  
Hongyu Liang ◽  
Weiming Cheng
Keyword(s):  
Net Primary Productivity ◽  
Negative Impact ◽  
Positive Impact ◽  
Ground Surface ◽  
Terrestrial Ecosystems ◽  
Temporal Variations ◽  
Plant Production ◽  
Positive Correlation ◽  
Increasing Trend ◽  
Spatio Temporal

Atmospheric aerosols can elicit variations in how much solar radiation reaches the ground surface due to scattering and absorption, which may affect plant photosynthesis and carbon uptake in terrestrial ecosystems. In this study, the spatio-temporal variations in aerosol optical depth (AOD) are compared with that in photosynthetically active radiation (PAR) and net primary productivity (NPP) during 2001–2017 in China using multiple remote sensing data. The correlations between them are analyzed at different scales. Overall, the AOD exhibited a northeast-to-southwest decreasing pattern in space. A national increasing trend of 0.004 year−1 and a declining trend of −0.007 year−1 of AOD are observed during 2001–2008 and 2009–2017. The direct PAR (PARdir) and diffuse PAR (PARdif) present consistent and opposite tendency with AOD during two periods, respectively. The total PAR (PARtotal) shows a similar variation pattern with PARdir. In terms of annual variation, the peaks of AOD coincide with the peaks of PARdif and the troughs of PARdir, indicating that aerosols have a significant positive impact on PARdir and a negative impact on PARdif. Furthermore, the PARdir has a stronger negative association with AOD than the positive correlation between PARdif and AOD at national and regional scales, indicating that PARdir is more sensitive to aerosol changes. The NPP has higher values in the east than in the west and exhibits a significant increasing trend of 0.035 gCm−2day−1 after 2008. The NPP has a negative correlation (−0.4–0) with AOD and PARdif and a positive correlation (0–0.4) with PARdir in most areas of China. The area covered by forests has the highest NPP-PAR correlation, indicating that NPP in forests is more sensitive to the PAR than is the NPP in grasslands and croplands. This study is beneficial for interpreting the aerosol-induced PAR impact on plant growth and for predicting plant production on haze days.

Sign in / Sign up

Export Citation Format

Share Document