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Read More →Elements of Agricultural Chemistry
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Farmland birds and resource protection in the UK: Cross-cutting solutions for multi-functional farming? [An article from: Biological Conservation]
This digital document is a journal article from Biological Conservation, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
Farmland bird declines in Europe are well documented. In the UK, agri-environment schemes are key mechanisms for reversing the declines of birds and other farmland biodiversity, but recent reviews suggest that wet habitats might be a gap in provision by these schemes. Important resources provided by wet habitats include: (i) damp soil, for probing species; (ii) permanent water to provide water-dependent invertebrates, as a source of food; (iii) bare or sparsely vegetated ground in the draw-down zone, to improve access to food; (iv) rank emergent vegetation for nesting. However, wet habitats have been lost from farmland as a result of loss of ponds and filling of ditches, as well as the effective removal of water from fields by surface run-off, itself affected by soil compaction, and extensive under-field drainage. The efficient removal of water from fields can cause problems downstream, both through flooding, and diffuse pollution. Regular farmland pollutants include pesticides, nitrogen, phosphorus and sediment, leading to environmental problems such as eutrophication and reduced quality of drinking water. Major new political instruments, such as the Water Framework Directive, will aim to reduce the impact of this diffuse pollution from agriculture. A variety of solutions to diffuse pollution, such as conservation tillage, buffer strips at field edges, and small constructed wetlands, could simultaneously provide some of the resources required by farmland birds. We suggest that future agri-environment schemes, to be truly multifunctional, could focus on bringing these diverse objectives together.
Toxins and Biologically Active Compounds from Microalgae, Volume 2: Biological Effects and Risk Management
Toxins and Biologically Active Compounds from Microalgae: Volume 2: Biological Effects and Risk Management is devoted to the effects toxic microalgae and their poisonous products exert on living systems and how they may affect human activities. The most advanced information regarding the molecular mechanisms of action of major groups of toxins is presented, to frame for the description of toxic responses found in living systems exposed to microalgal toxins. Accounts of the recognized environmental effects of harmful algal blooms and the existing therapeutic applications of some toxins have been included.
The picture is completed by the description of current initiatives to manage the risks posed by toxic microalgae, including strategies for the detoxification of contaminated seafood and the efforts to use most advanced informatic tools for the development of models for robust predictions regarding the appearance and the dynamics of harmful algal blooms. The complexity of risk management in the field is presented from a global perspective by highlighting major issues approached in world regions whose economic importance with regard to the production and commercialization of seafood is undeniable.
Read More →Hanna Instruments HI3896 Professional Agriculture Test Kit for 100 Tests
The chemical composition of soil includes pH and chemical elements. Soil analysis is necessary for better management of fertilization and to know the residues of fertilizers in relation to the crop, tillage and the most suitable plant choice for soil composition. An analysis can highlight shortages and help the understanding of the causes of an abnormal growth. By using the Hanna Soiltest, it is possible to measure pH and the most important elements for plant growth, that is, nitrogen (N), phosphorus (P) and potassium (K). Testing the soil during each crop cycle and comparing the results with plant growth can be a useful experiment for subsequent cultivations. Kit includes 120mL extraction solution (2), 70mL pH indicator, 75 powder packets (25 each for N,P and K), 1mL pipettes (3), test tubes (5), test tube stand, spoon, brush, color cards (4), graduated card and handbook. Range: traces, low, medium, high for Nitrogen, Phosphorus and Potassium; 4 to 9 pH for pH. Method: Colorimetric for Nitrogen, Phosphorus and pH; Turbidimetric for Potassium. 1 pH Smallest Increment for pH. Chemical Method: Ned for Nitrogen, pH Indicator for pH, Ascorbic Acid for Phosphorus, Tetraphenylborate for Potassium. 100 Tests, 25 tests for each. 710 grams.
Read More →Biological Control of Insect Pests Using Egg Parasitoids
The theme of the book is highly relevant to the current emphasis on environment conservation, with focus on native biodiversity conservation in agro-ecosystems. The current impetus being given to organic farming and export oriented agri-hortculture in the country calls for access to relevant scientific knowledge base among the stakeholders. Research on biological pest control is more than a century old in India. Egg parasitoids, which are mainly tiny wasps, led by the family Trichogrammatidae, are the most widely utilized natural enemies for biological control globally. Over thirty countries are using these bioagents to protect over 10 million hectares of agricultural and forestry crops from many important insect pests. The book comprises 18 chapters, which are arranged in continuum, commencing with basic aspects of knowledge and ending in their utilization targets. The chapters cover broadly four areas: bio-diversity and natural occurrence of egg parasitoids, behaviour and adaptation of egg parasitoids, mass production and safe use of egg parasitoids and utilisation of egg parasitoids in different crop ecosystems. Some of the chapters cater to the needs of discipline-wise update on the current R&D scenario-like insect taxonomy, biotechnology, mass-production and quality control of the target organisms – egg-parasitoids, which are useful for laboratory scientists/researchers. There are also chapters devoted to knowledge status and scope for utilization of egg parasitoids in different target crops, which cater to requirements of field entomologists and extensionists for use in their tasks of guiding farmers/local guides. The book is different in approach, method, structure and content and ensures holistic coverage of the topic. The chapters are written by active and experienced workers in different crops and aspects and co-edited by four very experienced experts who have over three decades R&D experience in the subject. All the authors have uniformly focussed on comprehensive literature study and critical identification of knowledge gaps for future R&D, thus the book is novel in outlook, up-to-date in content and comprehensive in coverage of themes. This book will be useful for supplementary reading for MSc Agriculture and PhD Agriculture students, besides MSc/PhD research students in Zoology/Environmental Biology, who are specialising in Entomology. It would also serve as a very useful reference book for researchers worldwide, though focus is also there on Indian work. It addresses the special information needs of students and faculty, besides practitioners and extensionists in the Australasia and Africa regions and thus not limited to the R&D knowledge generated in developed countries.
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