BETTER CROPS
WITH PLANT FOOD
LXXXIII (83) 1999, No. 1
John H. Sultenfuss Elected Chairman, William J. Doyle Vice Chairman of PPI and FAR Boards of Directors
3
World Production of Phosphate Rock
4
Functions of Phosphorus in Plants
6
Yield and Economic Responses to Phosphorus
8
Phosphorus Interactions with Other Nutrients
11
Effects of Phosphorus on Crop Maturity
14
Important Factors Affecting Crop Response to Phosphorus
16
Annual Statement of Ownership
19
Phosphorus Deficiency Symptoms in Some Crops
20
Phosphorus and Water Use Efficiency
24
Phosphorus Nutrition Improves Plant Disease Resistance
26
Phosphorus Improves Crop Quality
28
Effects of Phosphorus on Nitrogen Fixation
30
Phosphorus in Animal Nutrition
32
Phosphorus Fertilizer Placement
34
Phosphorus and the Environment
37
Phosphorus for All
40

Better Crops 1999 #1 (879k)

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