Crop Nutrient Balance
Presented in the panel discussion on U.S. Fertilizer Demand and Nutrient Use Issues at the Fertilizer Outlook and Technology Conference held in Jacksonville, Florida on 10 November 2015.
Fertilizer use efficiency has many definitions. One of the most useful is "partial factor productivity" (PFP). The following four charts show trends for PFP for nitrogen (N), phosphorus (P), and potas ...
Alberta, Saskatchewan, Manitoba, Ontario, Quebec, Nova Scotia, New Brunswick, and Prince Edward Island
Alberta, Saskatchewan, Manitoba, Ontario, Quebec, Nova Scotia, New Brunswick, and Prince Edward Island
Alberta, Saskatchewan, Manitoba, Ontario, Quebec, Nova Scotia, New Brunswick, and Prince Edward Island
Alberta, Saskatchewan, and Manitoba
Alberta crop potassium (K) removals generally have been increasing over the past 40 years, particularly in 2013 (Figure 1). Inputs of K in the form of fertilizer have varied over time. A large fractio ...
Alberta crop P removals generally have been increasing over the past 40 years, particularly in 2013 (Figure 1). Inputs of P in the form of fertilizer have varied over time. A large fraction of the P e ...
Alberta crop N removals generally have been increasing over the past 40 years, particularly in 2013 (Figure 1). Inputs of N in the form of fertilizer, and legume fixation, have been increasing as well ...
Saskatchewan crop potassium (K) removals generally have been increasing over the past 40 years, particularly in 2013 (Figure 1). Inputs of K in the form of fertilizer have varied over time. A large fr ...
Saskatchewan crop P removals generally have been increasing over the past 40 years, particularly in 2013 (Figure 1). Inputs of P in the form of fertilizer have varied over time. A large fraction of th ...
Saskatchewan crop N removals generally have been increasing over the past 40 years, particularly in 2013 (Figure 1). Inputs of N in the form of fertilizer, and legume fixation, have been increasing as ...
Manitoba crop potassium (K) removals generally have been increasing over the past 40 years, particularly in 2013 (Figure 1). Inputs of K in the form of fertilizer have varied over time. A large fracti ...
Manitoba crop P removals generally have been increasing over the past 40 years, particularly in 2013 (Figure 1). Inputs of P in the form of fertilizer have varied over time. A large fraction of the P ...
Manitoba crop N removals generally have been increasing over the past 40 years, particularly in 2013 (Figure 1). Inputs of N in the form of fertilizer, and legume fixation, have been increasing as wel ...
Nova Scotia, New Brunswick, Prince Edward Island
Potassium (K), like phosphorus, is relatively immobile in the soil and tends to accumulate when applied in surplus, except on the sandiest soils. In most of the past 40 years, the amount of K applied ...
The phosphorus (P) balance shows a substantial surplus during the years when producers were building up soil fertility. The surplus is smaller in the past 8 years than at any time in the past 40 years ...
Since nitrogen (N) is a mobile nutrient, producers focus on matching crop uptake requirements as closely as possible. Applying N in surplus to crop needs does not build up a reserve in the soil. Howev ...
Potassium (K), like phosphorus, is relatively immobile in the soil and tends to accumulate when applied in surplus, except on the sandiest soils. In most of the past 40 years, the amount of K applied ...
The phosphorus (P) balance shows a substantial surplus during the years when producers were building up soil fertility, up to the early 1990s. The historical surplus has contributed to the higher fert ...
Since nitrogen (N) is a mobile nutrient, producers focus on matching crop uptake requirements as closely as possible. Applying N in surplus to crop needs does not build up a reserve in the soil. Howev ...
Ontario, Quebec, Nova Scotia, New Brunswick, Prince Edward Island
Ontario, Quebec, Nova Scotia, New Brunswick, Prince Edward Island
Ontario, Quebec, Nova Scotia, New Brunswick, Prince Edward Island
Nova Scotia, New Brunswick, Prince Edward Island
Nova Scotia, New Brunswick, Prince Edward Island
Laura Lindsey (Bast), Robert Mullen, Ivan O’Halloran, Darryl Warncke, and Tom Bruulsema
Presented at the Fertilizer Statistics Workshop organized by the Canadian Fertilizer Institute in Ottawa, Ontario.
The links below provide estimates of regional nutrient balances
The crop nutrient balance on a province-wide basis provides useful information for assessing the current efficiency with which producers use nutrients, and also for assessing the impact of nutrient ma ...