Walter pearson kelley (66 resultados)

Paperback or Softback. Condición: New. The Reclamation of Alkali Soils; B617. Book.

Unknown. Condición: Fair. No Jacket. Readable copy. Pages may have considerable notes/highlighting. ~ ThriftBooks: Read More, Spend Less.

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

HRD. Condición: New. New Book. Shipped from UK. Established seller since 2000.

HRD. Condición: New. New Book. Shipped from UK. Established seller since 2000.

HRD. Condición: New. New Book. Shipped from UK. Established seller since 2000.

HRD. Condición: New. New Book. Shipped from UK. Established seller since 2000.

HRD. Condición: New. New Book. Shipped from UK. Established seller since 2000.

HRD. Condición: New. New Book. Shipped from UK. Established seller since 2000.

HRD. Condición: New. New Book. Shipped from UK. Established seller since 2000.

HRD. Condición: New. New Book. Shipped from UK. Established seller since 2000.

Paperback. Condición: New. Print on Demand. This book, an investigation into the nitrogen content of Hawaiian soils, established early 20th-century foundational knowledge of soil science in the region. The author examines the relationship between the nitrogen content and soil conditions, classifying and quantifying various nitrogen compounds within the soil. Their work demonstrated that determining the amount of nitrogen in a soil sample could predict plant life success. These quantitative measurements advanced understanding of the chemical composition of Hawaiian soils and allowed for the development of more productive agricultural practices. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Paperback. Condición: New. Print on Demand. This book delves into the complex and ever-evolving field of soil science, specifically the nature of humusâ"the organic component of soil. The author, an expert in the field, examines the historical understanding of humus and challenges long-held assumptions about its composition and properties. Through meticulous experimentation and analysis, the book reveals the intricate relationships between humus and other soil constituents, highlighting the challenges in accurately measuring and characterizing this vital substance. The author's insights are not only crucial for advancing our scientific understanding of soil health but also have far-reaching implications for agriculture and environmental management. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Paperback. Condición: New. Print on Demand. This book is a compelling compendium of the science and history of nitrogen assimilation in rice, exploring the evolution of our understanding on this topic. It examines earlier beliefs, questioning the long held view of nitrate supremacy for plant growth and absorption. The author presents meticulously designed field trial and laboratory experiments, offering conclusive evidence that challenges these earlier assumptions. The book highlights the detrimental effects of nitrate-based fertilizers on rice cultivation, demonstrating how nitrates are ineffective and even harmful to the crop, while spotlighting the remarkable benefits of nitrogen in the form of ammonia. The study also investigates the potential reasons behind rice's inability to utilize nitrates effectively, opening new avenues for research and exploration. This book is a valuable contribution to the field of agricultural science, offering practical insights for farmers and researchers alike, and shedding light on the complex interactions between plants and their nutrient environment. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Paperback. Condición: New. Print on Demand. This book delves into the complexities of reclaiming alkali soils, providing detailed accounts of field experiments conducted by the author. The author's extensive research offers valuable insights into the chemical changes that occur within alkali soils and the impact of various treatments on these changes. The book explores the effectiveness of gypsum, sulfur, iron sulfate, and alum in improving soil conditions and discusses the importance of drainage and irrigation practices in the reclamation process. The author's findings have significant implications for understanding the reclamation of alkali soils and contribute to ongoing efforts in soil management and agricultural practices. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Paperback. Condición: New. Print on Demand. This book details the history, causes, and prevailing scientific understanding of alkali soils, a type of soil with harmful salt and sodium levels. It offers a comprehensive examination of methods for reclaiming alkali soils, focusing primarily on gypsum and sulfur treatments. The author chronicles the development of reclamation practices, from early observations to modern advancements in soil chemistry, showcasing successful experiments conducted in California and other regions. By exploring the chemical and physical effects of soil treatments, the book elucidates the mechanisms behind successful reclamation techniques. The insights provided in this book are invaluable for soil scientists, farmers, and anyone interested in the restoration and management of alkali soils, offering a wealth of knowledge for improving soil productivity and supporting sustainable agriculture. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Paperback. Condición: New. Print on Demand. This book delves into the composition of the rice plant and how it is affected by fertilizers. The author provides historical context on the use of fertilizers in rice cultivation, particularly in Hawaii. The text explores the influence of nitrogen, phosphoric acid, potash, lime, and magnesia on rice growth and yield. It offers data and discussion on the absorption of nutrients by the plant and the role of carbohydrates in its development. The author highlights seasonal variations in rice composition and the importance of timing fertilizer applications for optimal results. The findings provide valuable insights for farmers and researchers seeking to improve rice production and quality, contributing to a more sustainable and efficient agricultural system. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. …

Paperback. Condición: New. Print on Demand. This book explores the little-known role of manganese in plant growth. From historical observations of manganese in plants to recent scientific experiments, the author synthesizes a comprehensive analysis of manganese's physiological effects and its presence in the soil. The author discusses the varying effects of manganese on different plant species, from stimulating growth in some to retarding it in others. The book also examines the indirect effects of manganese on soil composition and its potential influence on the availability of other nutrients. By providing a deeper understanding of manganese's role in plant nutrition, this book contributes to the ongoing discussion of the importance of trace elements in agriculture. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…

Condición: New. KlappentextrnrnUnlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketc.