THE DESIGN AND ANALYSIS OF EXPERIMENTS. By Oscar Kempthorne. New York, John Wiley and Sons, Inc., 1952. 631 pp. $8.50. This book by a teacher of statistics (as well as a consultant for \"experimenters\") is a comprehensive study of the philosophical background for the statistical design of experiment. It is necessary to have some facility with algebraic notation and manipulation to be able to use the volume intelligently. The problems are presented from the theoretical point of view, without such practical examples as would be helpful for those not acquainted with mathematics. The mathematical justification for the techniques is given. As a somewhat advanced treatment of the design and analysis of experiments, this volume will be interesting and helpful for many who approach statistics theoretically as well as practically. With emphasis on the \"why,\" and with description given broadly, the author relates the subject matter to the general theory of statistics and to the general problem of experimental inference. MARGARET J. ROBERTSON

The Design and Analysis of Experiments

Soil Chemical Analysis

A fast-Fourier-transform method of topography and interferometry is proposed. By computer processing of a noncontour type of fringe pattern, automatic discrimination is achieved between elevation and depression of the object or wave-front form, which has not been possible by the fringe-contour-generation techniques. The method has advantages over moire topography and conventional fringe-contour interferometry in both accuracy and sensitivity. Unlike fringe-scanning techniques, the method is easy to apply because it uses no moving components.

Fourier-transform method of fringe-pattern analysis for computer-based topography and interferometry

TiO(2) is one of the most studied compounds in materials science. Owing to some outstanding properties it is used for instance in photocatalysis, dye-sensitized solar cells, and biomedical devices. In 1999, first reports showed the feasibility to grow highly ordered arrays of TiO(2) nanotubes by a simple but optimized electrochemical anodization of a titanium metal sheet. This finding stimulated intense research activities that focused on growth, modification, properties, and applications of these one-dimensional nanostructures. This review attempts to cover all these aspects, including underlying principles and key functional features of TiO(2), in a comprehensive way and also indicates potential future directions of the field.

TiO2 nanotubes: synthesis and applications.

Global, regional, and national estimates of levels of preterm birth in 2014: a systematic review and modelling analysis.

Callus induction and silymarin production in of Silybum marianum L. under tissue culture medium

Sclerotium rolfsii is a soil borne plant pathogen causing root rot, stem rot, collar rot, wilt and foot rot diseases on more than 500 plant species of agricultural and horticultural crops throughout the world. SMS also possesses good bio-control activity against certain foliar and soil borne diseases and potential to bioremediate several agricultural grade fungicides and pesticides. The experiment was conducated at different concentrations of spent mushroom substrate amended with soil and Sclerotium rolfsii in pot culture. The observations to be recorded disease incidence, phenotypic parameters and disease severity index.

https://www.phytojournal.com/archives/2019/vol8issue3/PartBC/8-3-379-468.pdf

Efficiency of button spent mushroom Substrate for managing chick pea collar rot incited by Sclerotium rolfsii

In rhizosphere, root exudates act as food and chemo-attractants for the microbes, whereas microbes help in plant growth. The present study investigated the chemical changes in the rhizosphere of 10 contrasting wheat genotypes each for heat and drought stress at two stages of plant growth under stress conditions, and their root exudates profiles under semi-hydroponic conditions. The heat-tolerant genotypes exhibited significantly higher content of P by 1.59 fold, while drought-tolerant genotypes exhibited Mg and P by 1.22 and 1.24 fold, respectively compared to sensitive genotypes. Further, the heat stress tolerant genotypes exhibited significantly higher contents of Fe, Cu and Zn at anthesis by 1.53, 1.31 and 1.44 fold, respectively than at the booting stage, while the drought stress tolerant genotypes exhibited higher contents of Na, K, Mg and P at booting by 1.27, 3.05, 1.32 and 2.45 fold, respectively than at anthesis stage. Both heat and drought-tolerant genotypes exuded higher concentrations of most of the studied root exudates, and it ranged between 1.34 fold higher for succinic acid to 12.96 fold for sucrose in drought-tolerant genotypes. Similarly, in heat-tolerant genotypes, it varied from 1.01 fold for D-galactose to 10.39 fold for malic acid. Overall, the study revealed that the tolerant genotypes modulated their rhizosphere composition with respect to higher contents of Na, K, Mg, Fe, Cu, Zn and P, and exuding higher quantities of sugars and organic acids than the sensitive genotypes, which could contribute to their survival under abiotic stress conditions. 

Variations in chemical constituents of the rhizosphere of bread wheat genotypes and their significance for using as markers for heat and drought tolerance

Experimental investigation of engineered alkali-activated fibrous geopolymer concrete

Pusa Wheat 8802 (HI 8802), a durum wheat variety was released for timely sown, restricted irrigation conditions of peninsular India in 2020 by the Central Sub-Committee on Crop Standards, Notification and Release of Varieties for Agricultural Crops, Government of India. Its yield was significantly superior over the checks with an average yield of 29.1 q/ha and potential yield of 36.0 q/ha in national coordination trials. HI 8802 showed plasticity for different irrigation levels and yielded superior with significantly higher number of grain/spikes and thousand grain weights. It was found to be resistant to all the major wheat pests and diseases. HI 8802 is a biofortified durum wheat variety suitable for pasta production with high protein (12.8 %) and iron (40.4 ppm) content, which will boost the nutritional and economic security of peninsular zone wheat farmers.

https://doi.org/10.25174/2582-2675/2022/117107

Gyanendra Singh

Papers

Callus induction and silymarin production in of Silybum marianum L. under tissue culture medium

Efficiency of button spent mushroom Substrate for managing chick pea collar rot incited by Sclerotium rolfsii

Variations in chemical constituents of the rhizosphere of bread wheat genotypes and their significance for using as markers for heat and drought tolerance

Experimental investigation of engineered alkali-activated fibrous geopolymer concrete

HI 8802 (Pusa Wheat 8802) a high yielding, drought tolerant and biofortifed durum wheat variety for peninsular India