1,720,956 research outputs found
Investigation on Phosphorus Fractions and its use efficiency in Rice (Oryza sativa L.) under Integrated Phosphorus Management System
No full textA field experiment was conducted at Faculty of Agriculture, Wadura during the two consecutive kharif seasons of 2008-09 and 2009-10 for “Investigation on phosphorus fractions and its use efficiency in rice (Oryza sativa L.) under integrated phosphorus management system”. The experiment was laid out with 18 treatment combinations viz. three levels of inorganic phosphatic fertilizer (0, 30 and 60 kg P2O5 ha-1), three levels of organic manures (control, FYM @ 15 t ha-1 and PM @ 5 t ha-1) and two levels of biofertilizers (uninoculation and inoculation with PSB) in randomized complete block design with three replications. The results revealed that grain and straw yield of rice increased significantly with increase in recommended dose of phosphatic fertilizer. Application of PM @ 5 t ha-1 showed significantly superior results over other organic treatments. Inoculation with PSB showed significantly superior results over no inoculation. Yield attributing characters viz. number of effective tillers, number of spikelets, panicle length and 1000-grain weight showed significant increase with increasing levels of phosphatic fertilizer.
The plant analysis showed significant increase in nutrient content (N, P, K and Zn) in grain and straw with application of recommended inorganic phosphatic fertilizer. Among organics, PM @ 5 t ha-1 showed superior results over FYM @ 15 t ha-1. Inoculation with PSB also showed significantly superior results for nutrient content (N, P, K and Zn) over control.
Application of recommended inorganic phosphatic fertilizer significantly increased the soil P-fractions (Fe-P, Al-P, Ca-P and total P), available N, P, K and Zn content at harvest. Application of FYM @ 15 t ha-1 and PM @ 5 t ha-1 significantly increased various P-fractions (Fe-P, Al-P, Ca-P and total P) and also available N, P, K and Zn in soil at harvest over control. Inoculation with PSB showed significant increase in available N, P, K and Zn and P-fractions (Fe-P, Al-P, Ca-P and total P) over control.
Organic manures enhanced the physico-chemical properties of the soil such as pH, EC, OC and CEC. Among organics PM @ 5 t ha-1 was found superior over FYM @ 15 t ha-1. Inoculation with PSB significantly improved soil physico-chemical properties over no inoculation
Characterization, Classification and Nutrient Indexing of Saffron Growing Soils of District Pulwama
No full textA systematic and scientific appraisal of natural resources, especially soils is important and helpful to augment food production. Soil resource inventory is, therefore, basic for rationalizing land use according to its potentiality. Since no two soils are alike and have their own potential and/or problems and behave differently to management inputs, therefore, their use as per their potential is imperative for sustainable agriculture production.
On the basis of physiography the soils of Kashmir valley have been categorized into high altitude (Kandi), mid altitude (Karewa) and the low altitude (Valley basin). The mid altitude saffron growing karewas are the Pleistocene and post-pleistocene deposits of lacustrine origin with an altitude of 1582-1800 m (amsl). The commercial importance of these soils for the saffron crop in particular necessitates their characterization classification and nutrient indexing for agro-technological transfer. In order to address the above objective 15 representative soil profiles were selected from whole of the saffron belt in the Pulwama district on the basis of variation in apparent soil colour, topography and aspect. The excavated soil profiles were thoroughly examined for morphological characteristics and horizon wise soil samples were collected for laboratory analysis. The profiles were found to be of A-B or A-C type, with either well developed sub-surface diagnostic argillic horizon (Bt) in profiles on near level lands facing north and the cambic horizon in profiles facing south. The profiles on higher elevation with very gentle slope did not show any profile development. The texture showed variation with increase in the depth of the soil pedon. Generally the soil texture changed from silt clay/loam to clay loam except in profiles P10, P11 and P12 where it changed from loam to sandy loam, clay loam to loam and silt loam to clay loam/silt loam. The pH was slightly acidic to alkaline in pedons facing northern aspect and alkaline in the southern aspect facing pedons. The CaCO3 was found only at the sub-surface horizons giving an indication of calcareous nature of the parent material. Electrical conductivity in all the profiles was in normal range. The organic carbon content in the leveled land profiles facing north was found higher as compared to south facing pedons. The cation exchange capacity of north facing pedons was also found higher than south facing pedons and it showed generally an increasing trend with the depth of soil pedon. The exchange complex was dominated by Ca2+ followed by Mg2+ and K+, respectively. Clay mineralogy revealed the dominance of illite followed by mixed layer, hydroxyl interlayered vermiculites, smectite, chlorite, kaolinite and some amount of quartz and feldspar. All the micro-nutrient were found in sufficient range and among the primary macro-nutrients N and K varied from medium to higher range and available phosphorus was found in the lower range (deficit). Among the micronutrient Zn, Fe, and Mn showed significant positive correlation with organic carbon and negative significant correlation coefficient with soil pH. The soils are classified as Eutrochrepts, Udorthents and Hapludafls, respectively. Nutrient indexing for N, P and K, too revealed that these soils are deficient in phosphorus and require phosphorus along with nitrogen and potassium management for sustainable saffron yields
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
