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Author : Karl Schneider
Publisher : Unknown
Page : 28 pages
File Size : 44,6 Mb
Release : 1988
Category : Fertilizers
ISBN : MINN:319510029578885
Author : Karl Schneider
Publisher : Unknown
Page : 40 pages
File Size : 54,7 Mb
Release : 1989
Category : Fertilizers
ISBN : MINN:31951002968044A
Author : Anonim
Publisher : Unknown
Page : 80 pages
File Size : 51,9 Mb
Release : 1996
Category : Fertilizers
ISBN : MINN:31951D01405438P
Author : Karl Schneider
Publisher : Unknown
Page : 28 pages
File Size : 41,7 Mb
Release : 1986
Category : Fertilizers
ISBN : MINN:31951002941132O
Author : Karl Schneider
Publisher : Unknown
Page : 40 pages
File Size : 40,9 Mb
Release : 1991
Category : Fertilization of plants
ISBN : MINN:31951003043291D
Author : International Fertilizer Industry Association
Publisher : Food & Agriculture Org.
Page : 82 pages
File Size : 48,9 Mb
Release : 2000
Category : Technology & Engineering
ISBN : 9251044147
Rationale for the need of fertilizers (increase of production and increase of farm income); Nutrients - their role for the plant and their sources; Soils; Fertilizer recommendations for selected crops according to their needs; The importance of balanced fertilization; Fertilizers, their appearance, quality, labeling; Calculation of fertilizer rates; How to apply fertilizers; Hot to determine fertilizer needs; Other factors limiting crop yields; Fertilizer extension work.
Author : Abay, Kibrom A.,Abay, Mehari Hiluf,Amare, Mulubrhan,Berhane, Guush,Aynekulu, Ermias
Publisher : Intl Food Policy Res Inst
Page : 41 pages
File Size : 46,8 Mb
Release : 2021-06-28
Category : Political Science
ISBN : 8210379456XXX
Lack of accurate information about soil nutrient requirements coupled with limited access to appropriate fertilizers could lead to mismatch between soil nutrient requirements and fertilizer applications. Such anomalies and mismatches are likely to have important implications for agricultural productivity. In this paper we use experimental (spectral soil analysis) data from Ethiopia to examine farmers’ response to soil nutrient deficiencies and its implications for yield responses. We find that farmers’ response to macronutrient (nitrogen and phosphorus) deficiencies is not always consistent with agronomic recommendations. For instance, we find that farmers in our sample are applying nitrogen fertilizers to soils lacking phosphorus, potentially due to lack of information on soil nutrient deficiencies or lack of access to appropriate fertilizers in rural markets. On the other hand, farmers respond to perceivably poor-quality soils and acidic soils by applying higher amount of nitrogen and phosphorus fertilizers per unit of land. We further show that such mismatches between fertilizer applications and soil macronutrient requirements are potentially yield-reducing. Those farmers matching their soil nutrient requirements and fertilizer application are likely to enjoy additional yield gains and the vice versa. Marginal yield responses associated with nitrogen (phosphorus) application increases with soil nitrogen (phosphorus) deficiency. Similarly, we find that farmers’ response to acidic soils is not yield-enhancing. These findings suggest that such mismatches may explain heterogeneities in marginal returns to chemical fertilizers and the observed low adoption rates of chemical fertilizers in sub-Saharan Africa. As such, these findings have important implications for improving input management practices and fertilizer diffusion strategies.
Author : Anonim
Publisher : Unknown
Page : 148 pages
File Size : 47,9 Mb
Release : 1992
Category : Corn
ISBN : WISC:89058793654
Author : Great Britain. Ministry of Agriculture, Fisheries and Food
Publisher : Unknown
Page : 128 pages
File Size : 47,9 Mb
Release : 1994
Category : Agricultural chemicals
ISBN : CORNELL:31924073134300
ISBN 0112429351 is superseded by 2000 ed. (ISBN 0112430589) but is still available from TSO's on-demand publishing service
Author : Anonim
Publisher : Unknown
Page : 100 pages
File Size : 54,8 Mb
Release : 1976
Category : Fertilizer industry
ISBN : IND:30000139508646
Author : Joe Free,Conrad Buehler Kresge,Thomas H. Foster
Publisher : Unknown
Page : 104 pages
File Size : 55,6 Mb
Release : 1976
Category : Agriculture
ISBN : WISC:89042600122
This document examines fertilizer use and marketing to small farmers in the Dominican Republic. The effort was not intended to be an in-depth country study. It was designed to assemble secondary data and opinions of those knowledgeable of the Dominican Republic small farm and fertilizer situation and to organize that data for planning purposes by the USAID Mission to the Dominican Republic and the Dominican Republic Government in developing fertilizer-related action programs designed to increase the domestic food supply.
Author : Andre Bationo,Djimasbé Ngaradoum,Sansan Youl,Francois Lompo,Joseph Opoku Fening
Publisher : Springer
Page : 339 pages
File Size : 54,6 Mb
Release : 2018-04-03
Category : Technology & Engineering
ISBN : 9783319587899
As part of its efforts to improve fertilizer use and efficiency in West Africa, and following the recent adoption of the West African fertilizer recommendation action plan (RAP) by ECOWAS, this volume focuses on IFDC's technical lead with key partner institutions and experts to build on previous and current fertilizer recommendations for various crops and countries in West Africa for wider uptake by public policy makers and fertilizer industry actors.
Author : Anonim
Publisher : Unknown
Page : 118 pages
File Size : 52,9 Mb
Release : 1969
Category : Fertilizer industry
ISBN : UIUC:30112020023583
Author : M. Tahir Saleem,D. Koole
Publisher : Unknown
Page : 120 pages
File Size : 49,5 Mb
Release : 1983
Category : Fertilizers
ISBN : CORNELL:31924050301864
Author : Clarence Robert Dorman,Harold Homer Foster,Henry Herbert Leveck,Ivan Ernest Miles,John A. Campbell,Nathaniel H. Loomis,Ray Herbert Means,Robert Temple Clapp,Hugh Wilbur Bennett,Oral Ala Brown,Russell Coleman
Publisher : Unknown
Page : 758 pages
File Size : 41,7 Mb
Release : 1945
Category : Beef cattle
ISBN : UIUC:30112019667010
