Soil Chemical Analysis

The 11th edition of Harrison's Principles of Internal Medicine welcomes Anthony Fauci to its editorial staff, in addition to more than 85 new contributors. While the organization of the book is similar to previous editions, major emphasis has been placed on disorders that affect multiple organ systems. Important advances in genetics, immunology, and oncology are emphasized. Many chapters of the book have been rewritten and describe major advances in internal medicine. Subjects that received only a paragraph or two of attention in previous editions are now covered in entire chapters. Among the chapters that have been extensively revised are the chapters on infections in the compromised host, on skin rashes in infections, on many of the viral infections, including cytomegalovirus and Epstein-Barr virus, on sexually transmitted diseases, on diabetes mellitus, on disorders of bone and mineral metabolism, and on lymphadenopathy and splenomegaly. The major revisions in these chapters and many

Harrison's Principles of Internal Medicine

Impatti, adattamento e vulnerabilita Le cause e le responsabilita dei cambiamenti climatici sono state trattate sul numero di ottobre della rivista Cda. Approfondiamo l’argomento presentando il documento: “Cambiamenti climatici 2007: impatti, adattamento e vulnerabilita” votato ad aprile 2007 dal secondo gruppo di lavoro del Comitato Intergovernativo sui Cambiamenti Climatici (Intergovernmental Panel on Climate Change). Si tratta del secondo di tre documenti che compongono il quarto rapporto sui cambiamenti climatici.

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Climate Change 2007: Impacts, Adaptation and Vulnerability.

Principles of Plant Breeding

Abiotic stresses hamper plant growth and productivity. Climate change and agricultural malpractices like excessive use of fertilizers and pesticides have aggravated the effects of abiotic stresses on crop productivity, and degraded the ecosystem. There is an urgent need for environment-friendly management techniques such as the use of arbuscular mycorrhizal fungi (AMF) for enhancing crop productivity. AMF are commonly known as bio-fertilizers. Moreover, it is widely believed that the inoculation of AMF provides tolerance to host plants against various stressful situations like heat, salinity, drought, metals and extremes of temperature. AMF may both assist host plants in up-regulation of tolerance mechanisms, and prevent the down-regulation of key metabolic pathways. AMF, being natural root symbionts, provide essential plant inorganic nutrients to host plants, thereby improving growth and yield under unstressed and stressed regimes. The role of AMF as a bio-fertilizer can potentially strengthen plants’ adaptability to changing environment. Thus, further research focusing on the AMF-mediated promotion of crop quality and productivity is needed. The present review provides a comprehensive up-to-date knowledge on AMF and their influence on host plants at various growth stages, their advantages and applications, and consequently the importance of the relationships of different plant nutrients with AMF.

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Role of Arbuscular Mycorrhizal Fungi in Plant Growth Regulation: Implications in Abiotic Stress Tolerance.

Field experiments were conducted to study the effect of various organic manures on yield and quality parameters of turmeric and their effect on residual soil fertility. The results showed that significantly higher rhizome yield was recorded with the application of FYM @ 18 t/ha which was statistically at par with 10 t/ha poultry manure. Application of various organic sources resulted in 16–103 per cent highe rhlzome yield over control and also improved the quality parameters. Organic manuring not only produced the highest and sustainable crop yields but also improved the soil fertility and productivity.

Effect of organic manures on soil fertility, growth, physiology, yield and quality of turmeric

Salicylic acid and nitric oxide alleviate high temperature induced oxidative damage in Lablab purpureus L plants by regulating bio-physical processes and DNA methylation.

Advances in vegetable production.

Antioxidant phytochemicals and gingerol content in diploid and tetraploid clones of ginger (Zingiber officinale Roscoe)

The source of nutrition available to plants can affect yield quantity and quality. Incorrect use of synthetic fertilizers can cause serious damage to the soil, the ecosystem, and quality of produce. Field experiments were conducted for two consecutive winter seasons from 2003 to 2005 in an Alfisol at Umiam, Meghalaya, India to study the effect of type of fertilizer on growth, yield and quality of broccoli in comparison with synthetic fertilizer (Control). Yields with some organic materials were higher than those produced with synthetic fertilizer. Use of solid organic materials and compost teas, in some cases, enhanced yield and quality, and reduced input costs. Application of organic materials reduced soil acidity, and improved the organic matter and available nutrients of the soil. Use of organics in vegetable production appears to provide an alternative to conventional methods.

Nagendra Rai

Papers

Effect of organic manures on soil fertility, growth, physiology, yield and quality of turmeric

Salicylic acid and nitric oxide alleviate high temperature induced oxidative damage in Lablab purpureus L plants by regulating bio-physical processes and DNA methylation.

Advances in vegetable production.

Antioxidant phytochemicals and gingerol content in diploid and tetraploid clones of ginger (Zingiber officinale Roscoe)

Growth, Yield, and Dietary Antioxidants of Broccoli as Affected by Fertilizer Type