Tessenderlo Kerley, Inc.

Tessenderlo Group Nv

Thomas David Fairweather

Michael Massoud Hojjatie

Constance Lynn Frank Lockhart

Jeroen Van Cauwenbergh

Martijn Timmermans

Heidi Van Den Rul

Terry Ludwig

Bert Richard Bock

John Garland Clapp

Provided in the invention are thiosulfate-urea based products (IIa) and/or a polysulfide-urea based products (IIb) and/or a (bi)sulfite-urea based products (IIc) suitable for use in fertilizers and comprising: one or more urea-containing compounds (a), one or more compounds (b), optionally, one or more urease (c1) and/or nitrification (c2) inhibitors that are different from compounds (b), and/or optionally, one or more additives (d) that are different from any of the above compounds, wherein the amount of water (e) in the product (II) is less than about 10 wt %, preferably less than about 5 wt %, wherein compounds (a) are selected from urea (a1) and/or from urea-aldehyde products (a2) and/or from urea-triazone compounds (a3), wherein compounds (b) are selected from thiosulfates (b1) and/or from polysulfides (b2) and/or from (bi)sulfites (b3). An advantage of products of the invention is that only minimal amounts of degradation products of compounds (b) are formed. Products of the invention can be made in various forms and in different ways. All of the materials of the invention are suitable for use in fertilizers and blend well with solid and liquid fertilizers standardly used.

Compositions comprising solid thiosulfates, polysulfides and/or (bi)sulfites and methods for preparing same

Provided in the invention is a stabilized fertilizer composition (I) suitable for use in fertilizers and comprising: Urea (a), One or more compounds (b), One or more urease inhibitors (c1) and/or one or more nitrification inhibitors (c2), optionally provided in one or more carriers (d), said compounds (c) being different from compounds (b), Optionally one or more additives (e) different from any of the above, and Water (f) in an amount less than about 10 wt % and preferably less than about 5 wt %; wherein compounds (b) are selected from thiosulfates (b1) and/or from polysulfides (b2) and/or from (bi)sulfites (b3); and wherein the ratio of urea (a) to compounds (b) is from 1:99 to 99:1, preferably from 2:98 to 98:2. Products of the invention can be made in various forms and in different ways. All of the materials of the invention are suitable for use in fertilizers and blend well with solid and liquid fertilizers standardly used. They have excellent shelf life and provide good urea-N protection.

Stabilized urea fertilizer compositions and methods for preparing same

The present invention relates to an aqueous liquid fertilizer composition having a 4 wt % to 30 wt % nitrogen content and 8 wt % to 27 wt % sulfur content comprising more than 20 wt % ammonium thiosulfate, calculated as dry matter, and at least 2 wt %, calculated as dry matter, of one other compound selected from the group consisting of a sulfite, bisulfite, urea-triazone compound and zinc sulfate hexahydrate or mixtures thereof, wherein the composition has a salt out temperature of about 0 C or less as measured with the FFF-method. The aqueous liquid fertilizer composition of the present invention can have an amount of sulfur of about 21 wt % or higher, for example 22-26 wt %.

Liquid fertilizer comprising thiosulfate

Described herein is a method for slowing the progression of citrus greening disease. The method may substantially stop the progression of citrus greening disease, preventing the loss of all or part of a citrus harvest. The method comprises the application of one or more thiosulfates in irrigation water to the root zone of a citrus tree.

Methods of treating citrus greening disease

The present invention provides a new liquid fertilizer comprised of potassium sulfite and potassium bisulfite, with neutral to slightly alkaline pH, relatively lower salt index and potentially lower phytotoxicity damage compared to other sources of potassium and sulfur products applied in equal amounts as a starter fertilizer. More specifically, the present invention further relates to methods for fertilizing using a composition of potassium sulfite and potassium bisulfite, particularly as a starter fertilizer, in-furrow fertilizer, side dress fertilizer, and for foliar, broadcast, soil injection and fertigation applications. The fertilizer composition is comprised primarily of potassium sulfite and potassium bisulfite (with the fertilizer grade of 0-0-23-8S).

Potassium sulfite/potassium bisulfite (KS/KBS) liquid as starter, side-dress, broadcast, foliar and fertigation fertilizers

An efficient semi-continuous preparation of manganese thiosulfate (MnSO, MnTS) from manganese hydrosulfite and sulfur at elevated temperature is described. Manganese hydrosulfite is prepared from commercial manganese carbonate and sulfur dioxide. The resulting product is an emulation of liquid manganese thiosulfate and solid by-products. A manganese thiosulfate solution is produced according to the invention by use of certain mole ratios of MgCOto sulfur, and certain parameters such as the temperature of the reaction process and the pH conditions, including rate and duration of SOpurging, which causes the by-products to be reduced to less than 2% by weight. The resulting manganese thiosulfate is a pinkish liquid with concentration up to 20%.

Process and apparatus for preparing manganese thiosulfate (MnTS) solution

Use of urease-inhibiting amounts of calcium polysulfide, potassium polysulfide, calcium thiosulfate, magnesium thiosulfate, and blends thereof, in combination with urea-containing fertilizer to significantly reduce potential losses of nitrogen due to ammonia volatilization.

Growing community of inventors

Dundee, OR, United States of America

Thomas David Fairweather