A method of producing a fertilizer composition, the method comprising: (a) providing a composition comprising ammonia; and (b) contacting the composition provided in step (a) with: (i) a composition comprising carbon dioxide; and (ii) a source of sulfate ion; and (iii)cellulosic fibres.

A method of producing a fertilizer composition, the method comprising: (a) providing a composition comprising ammonia; and (b) contacting the composition provided in step (a) with: (i) a composition comprising carbon dioxide; and (ii) a source of sulfate ion; and (iii)cellulosic fibres.

A plant growth enhancer including a source of carbon dioxide, a source of carbohydrate, and source of acid in an amount to provide increased retention of carbon dioxide in the soil.

A plant growth enhancer including a source of carbon dioxide, a source of carbohydrate, and source of acid in an amount to provide increased retention of carbon dioxide in the soil.

A plant growth enhancer including a source of carbon dioxide, a source of carbohydrate, and source of acid in an amount to provide increased retention of carbon dioxide in the soil. A method of enhancing the growth of plants by applying the plant growth enhancer to the soil containing the plant, the acid increasing retention of the carbon dioxide in the soil, and the plant exhibiting enhanced growth from the combination of the carbon dioxide and carbohydrate.

A plant growth enhancer including a source of carbon dioxide, a source of carbohydrate, and source of acid in an amount to provide increased retention of carbon dioxide in the soil. A method of enhancing the growth of plants by applying the plant growth enhancer to the soil containing the plant, the acid increasing retention of the carbon dioxide in the soil, and the plant exhibiting enhanced growth from the combination of the carbon dioxide and carbohydrate.

A process for the production of elemental sulphur-urea fertilizer products is described, comprising the preparation of molten urea; preparing a suspension of micronized sulphur particles with water; mixing the molten urea with suspension of micronized sulphur particles with water wherein the micronized sulphur particles substantially remain in micronized solid state; and spraying the mixture of molten urea and suspension of micronized sulphur particles with water into a granulator, wherein the water in the mixture is flashed off, resulting in the formation of sulphur-urea granules with an even distribution of urea and micronized sulphur particles. An elemental sulphur-urea fertilizer composition obtained by the process is also described.

A process for the production of elemental sulphur-urea fertilizer products is described, comprising the preparation of molten urea; preparing a suspension of micronized sulphur particles with water; mixing the molten urea with suspension of micronized sulphur particles with water wherein the micronized sulphur particles substantially remain in micronized solid state; and spraying the mixture of molten urea and suspension of micronized sulphur particles with water into a granulator, wherein the water in the mixture is flashed off, resulting in the formation of sulphur-urea granules with an even distribution of urea and micronized sulphur particles. An elemental sulphur-urea fertilizer composition obtained by the process is also described.

A system for applying CO.sub.2 gas to improve Cannabis production. A multistage system is disclosed including upstream, midstream, and downstream stages or subsystems. The upstream subsystem receives and stores gas, particularly CO2 gas. The midstream subsystem is communicatively connected to the upstream subsystem and to the downstream subsystem. It monitors the environment of the downstream subsystem, determines when and how to apply gas to plants growing in the downstream system, acquires gas stored in the upstream subsystem, and distributes it to the downstream system. It also has various monitoring, command and control, management, and reporting features. The downstream subsystem includes one or more plant growth areas or plots, gas distribution means, such as gas conduits, tubes or lines from the midstream subsystem, and the high efficiency, adjustable gas applicator, and various sensing and monitoring devices communicatively connected to the midstream subsystem.

Lake Kivu contains ˜50 million tonnes (MT) dissolved biomethane. Efficient use is problematic from massive associated CO.sub.2: ˜600 MT. Conventional extraction scrubs CO.sub.2 with ˜50% overall CH.sub.4 loss, and returns ˜80% CO.sub.2 into the deep lake, preserving a catastrophe hazard threatening >2 M people. Methods and systems are disclosed coupling: (1) efficient CH.sub.4+CO.sub.2 degassing; (2) optional oxyfuel power generation and CO.sub.2 power cycle technologies; and (3) CO.sub.2 capture, processing, storage and use in a utilization hub. The invention optimally allows power production with >2× improved efficiency plus cryo-energy storage and large-scale greentech industrialization. CO.sub.2-utilizing products can include: Mg-cements/building materials, algal products/biofuels, urea, bioplastics and recycled materials, plus CO.sub.2 for greenhouse agriculture, CO.sub.2-EOR/CCS, off-grid cooling, fumigants, solvents, carbonation, packaging, ores-, biomass-, and agro-processing, cold pasteurization, frack and geothermal fluids, and inputs to produce methanol, DME, CO, syngas, formic acid, bicarbonate and other greentech chemicals, fuels, fertilizers and carbon products.