Free-flowing fertilizer compositions

A free-flowing, powder fertilizer composition comprising:

• i) from about 87.50 to about 99.80 weight percent of a water-soluble nitrogen-containing fertilizer;
• ii) from about 0.01 to about 10.00 weight percent of a drift reduction agent selected from the group consisting of non-derivatized guar gum, non-cationic derivatized guar gum, cationic guar gum, and mixtures thereof;
• and
• iii) from about 0.01 to about 2.50 weight percent of a silicone defoaming agent either encapsulated or absorbed in an agriculturally acceptable carrier;
• wherein all weight percents are based on the total weight of the powder fertilizer composition.

A free-flowing, powder fertilizer composition comprising

• i) from about 87.50 to about 99.80 weight percent diammonium sulfate;
• ii) from about 0.01 to about 10.00 weight percent hydroxy propyl guar gum;
• iii) from about 0.01 to about 2.5 weight percent starch encapsulated dimethyl polysiloxane;
• and
• iv) from about 0.01 to about 2.5 weight percent of a nonyl phenol ethoxylate, wherein all weight percents are based on the total weight of the powder fertilizer composition.

A process for preparing a free-flowing, powder fertilizer composition comprising the steps of:

• a) intimately mixing
• i) from about 87.50 to about 99.80 weight percent of a water-soluble, nitrogen-containing fertilizer;
• and
• ii) from about 0.01 to about 12.49 weight percent of a drift reduction agent selected from the group consisting of non-derivatized guar gum, non-cationic derivatized guar gum, cationic guar gum, and mixtures thereof to form a drift modified fertilizer composition;
• b) milling or grinding said modified fertilizer composition to obtain a uniform particle size composition;
• and
• c) intimately blending said uniform particle size composition with from about 0.01 to about 12.49 weight percent of a silicone defoaming agent either encapsulated or absorbed in a agriculturally acceptable carrier;
• wherein all weight percents are based on the total weight percent of the powder fertilizer composition.

A process for preparing a free-flowing, powder fertilizer composition comprising the steps of:

• a) intimately mixing
• i) from about 87.50 to about 99.80 weight percent of a water-soluble, nitrogen-containing fertilizer;
• and
• ii) from about 0.01 to about 10.00 weight percent of a drift reduction agent selected from the group consisting of non-derivatized guar gum, non-cationic derivatized guar gum, cationic guar gum, and mixtures thereof to form a drift modified fertilizer composition;
• b) milling or grinding said modified fertilizer composition to obtain a uniform particle size composition;
• and
• c) intimately blending said uniform particle size composition with from about 0.01 to about 2.50 weight percent of a silicone defoaming agent either encapsulated or absorbed in an agriculturally acceptable carrier;
• wherein all weight percents are based on the total weight percent of the powder fertilizer composition.

A process for preparing a dust-reduced, free-flowing, powder fertilizer composition comprising the steps of:

• a) intimately mixing
• i) from about 87.50 to about 99.80 weight percent of diammonium sulfate;
• and
• ii) from about 0.01 to about 10.00 weight percent hydroxy propyl guar gum to form a drift modified fertilizer composition;
• b) milling or grinding said modified fertilizer composition to obtain a uniform particle size composition;
• c) intimately blending said uniform particle size composition with from about 0.01 to about 2.50 weight percent of starch encapsulated dimethyl polysiloxane to form a powder fertilizer composition;
• and
• d) spraying upon said powder fertilizer composition from about 0.01 to about 2.50 weight percent of a nonyl phenol ethoxylate, wherein all weight percents are based on the total weight of the dust reduced, free-flowing powder fertilizer composition so formed.