Author: J. D. Colwell
Publisher: Oxford University Press, USA
ISBN:
Category : Language Arts & Disciplines
Languages : en
Pages : 292
Book Description
Farmers apply fertilizers to crops in order to produce maximum economic return. To attain this, it is important that fertilizer requirements can be estimated accurately. The prevention of excessive use of fertilizers on economic grounds also has the beneficial consequence of minimizing environmental pollution of groundwaters through the leaching of unused fertilizers. This book is intended for both the agricultural scientist who is engaged in research on the use of fertilizers in crop production and consultants who might assist with the interpretation of statistical data. Relevant mathematical and statistical procedures are described critically, indicating their basis and limitations, and how they may be used or misused. Some basic knowledge of statistics is assumed on the part of the reader. Many of the procedures have been developed by the author from experience in soil fertility projects in Australia, Canada, the USA and a number of less-developed countries.
Estimating Fertilizer Requirements
Author: J. D. Colwell
Publisher: Oxford University Press, USA
ISBN:
Category : Language Arts & Disciplines
Languages : en
Pages : 292
Book Description
Farmers apply fertilizers to crops in order to produce maximum economic return. To attain this, it is important that fertilizer requirements can be estimated accurately. The prevention of excessive use of fertilizers on economic grounds also has the beneficial consequence of minimizing environmental pollution of groundwaters through the leaching of unused fertilizers. This book is intended for both the agricultural scientist who is engaged in research on the use of fertilizers in crop production and consultants who might assist with the interpretation of statistical data. Relevant mathematical and statistical procedures are described critically, indicating their basis and limitations, and how they may be used or misused. Some basic knowledge of statistics is assumed on the part of the reader. Many of the procedures have been developed by the author from experience in soil fertility projects in Australia, Canada, the USA and a number of less-developed countries.
Publisher: Oxford University Press, USA
ISBN:
Category : Language Arts & Disciplines
Languages : en
Pages : 292
Book Description
Farmers apply fertilizers to crops in order to produce maximum economic return. To attain this, it is important that fertilizer requirements can be estimated accurately. The prevention of excessive use of fertilizers on economic grounds also has the beneficial consequence of minimizing environmental pollution of groundwaters through the leaching of unused fertilizers. This book is intended for both the agricultural scientist who is engaged in research on the use of fertilizers in crop production and consultants who might assist with the interpretation of statistical data. Relevant mathematical and statistical procedures are described critically, indicating their basis and limitations, and how they may be used or misused. Some basic knowledge of statistics is assumed on the part of the reader. Many of the procedures have been developed by the author from experience in soil fertility projects in Australia, Canada, the USA and a number of less-developed countries.
Estimated World Fertilizer Production Capacity as Related to Future Needs, 1967 to 1972-80
Author: Tennessee Valley Authority
Publisher:
ISBN:
Category : Fertilizer industry
Languages : en
Pages : 28
Book Description
Publisher:
ISBN:
Category : Fertilizer industry
Languages : en
Pages : 28
Book Description
Computations for Studies of Soil Fertility and Fertilizer Requirements
Author: J. D. Colwell
Publisher: C.A.B. International
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 312
Book Description
Optimal rates of application of fertilizer. Simultaneous fertilizer rates and the optimal mix. Polinomial yield models. Subroutines for optimal fertilizer rates. Optimal rates for compound fertilizers. General fertilizer rates and recommendations. Nomeclature and jargon. Orthogonal polynomials for studies of soil fertility. Subroutine for analysis of variance with orthogonal polynomials. Designs form fertilizer experiments. The calibration of soil tests for the estimation of fertilizer requirements.
Publisher: C.A.B. International
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 312
Book Description
Optimal rates of application of fertilizer. Simultaneous fertilizer rates and the optimal mix. Polinomial yield models. Subroutines for optimal fertilizer rates. Optimal rates for compound fertilizers. General fertilizer rates and recommendations. Nomeclature and jargon. Orthogonal polynomials for studies of soil fertility. Subroutine for analysis of variance with orthogonal polynomials. Designs form fertilizer experiments. The calibration of soil tests for the estimation of fertilizer requirements.
A Method for Estimating World Fertilizer Requirements as Related to Agricultural and Food Requirements
Author: Frank M. Kennedy
Publisher:
ISBN:
Category : Fertilizers
Languages : en
Pages : 11
Book Description
Publisher:
ISBN:
Category : Fertilizers
Languages : en
Pages : 11
Book Description
Estimating Fertilizer Application Costs
Author: G. Scott Simpson
Publisher:
ISBN:
Category : Fertilizers
Languages : en
Pages : 30
Book Description
Hulpmiddelen voor handelaars in kunstmest voor het verschaffen van inzicht in vaste en variabele kosten en voor gebruikers voor het bepalen van mogelijke alternatieven aan de kostenkant
Publisher:
ISBN:
Category : Fertilizers
Languages : en
Pages : 30
Book Description
Hulpmiddelen voor handelaars in kunstmest voor het verschaffen van inzicht in vaste en variabele kosten en voor gebruikers voor het bepalen van mogelijke alternatieven aan de kostenkant
Managing Cover Crops Profitably (3rd Ed. )
Author: Andy Clark
Publisher: DIANE Publishing
ISBN: 1437903797
Category : Technology & Engineering
Languages : en
Pages : 248
Book Description
Cover crops slow erosion, improve soil, smother weeds, enhance nutrient and moisture availability, help control many pests and bring a host of other benefits to your farm. At the same time, they can reduce costs, increase profits and even create new sources of income. You¿ll reap dividends on your cover crop investments for years, since their benefits accumulate over the long term. This book will help you find which ones are right for you. Captures farmer and other research results from the past ten years. The authors verified the info. from the 2nd ed., added new results and updated farmer profiles and research data, and added 2 chap. Includes maps and charts, detailed narratives about individual cover crop species, and chap. about aspects of cover cropping.
Publisher: DIANE Publishing
ISBN: 1437903797
Category : Technology & Engineering
Languages : en
Pages : 248
Book Description
Cover crops slow erosion, improve soil, smother weeds, enhance nutrient and moisture availability, help control many pests and bring a host of other benefits to your farm. At the same time, they can reduce costs, increase profits and even create new sources of income. You¿ll reap dividends on your cover crop investments for years, since their benefits accumulate over the long term. This book will help you find which ones are right for you. Captures farmer and other research results from the past ten years. The authors verified the info. from the 2nd ed., added new results and updated farmer profiles and research data, and added 2 chap. Includes maps and charts, detailed narratives about individual cover crop species, and chap. about aspects of cover cropping.
Estimated World Fertilizer Production Capacity as Related to Future Needs, 1970 to 1975
Practical Methods of Estimating Fertilizer Requirements in Nigeria : (states and Federal Estimates : a Case Study)
Fertilizer Requirements in 2015 and 2030
Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9789251044506
Category : Business & Economics
Languages : en
Pages : 44
Book Description
This is a joint study involving five organisations from both the public and private sectors. The objective is to explore the future need for fertilizer required to support the Food and Agriculture Organization's (FAO) projections of agricultural commodity production for 2015 and 2030. The paper begins by briefly reviewing attempts to identify and quantify the factors influencing the growth in demand and supply for agricultural commodities. Several studies that estimate long-term fertlizer use are also reviewed, followed by a discussion of the forecasting methods and data. The results and implications conclude the paper. The study projects growth rates of between 0.7 and 1.3 per cent, depending on assumptions about nutrient efficiency over the next 35 years
Publisher: Food & Agriculture Org.
ISBN: 9789251044506
Category : Business & Economics
Languages : en
Pages : 44
Book Description
This is a joint study involving five organisations from both the public and private sectors. The objective is to explore the future need for fertilizer required to support the Food and Agriculture Organization's (FAO) projections of agricultural commodity production for 2015 and 2030. The paper begins by briefly reviewing attempts to identify and quantify the factors influencing the growth in demand and supply for agricultural commodities. Several studies that estimate long-term fertlizer use are also reviewed, followed by a discussion of the forecasting methods and data. The results and implications conclude the paper. The study projects growth rates of between 0.7 and 1.3 per cent, depending on assumptions about nutrient efficiency over the next 35 years
Selecting Fertilizers
Author: Albert Ronald Merz
Publisher:
ISBN:
Category : Fertilizers
Languages : en
Pages : 24
Book Description
Publisher:
ISBN:
Category : Fertilizers
Languages : en
Pages : 24
Book Description