A non-nematicidal composition comprises at least one glucan and/or at least one fucan which act individually or synergistically with mannitol to reduce losses in crop yield and marketable grade caused by the infestation of growth media with plant pathogenic nematodes, to levels equivalent to those achieved with commercial nematicides, but without posing a risk to the ecosystem or user. In some cases the composition comprises at least one glucan, at least one fucan and at least one mannitol which may be in a weight/weight ratio of approximately 1:2:3 of at least one glucan:at least one fucan:at least one mannitol or between approximately 1:1:1 to 1:1:3 of at least one glucan:at least one fucan:at least one mannitol.

A non-nematicidal composition comprises at least one glucan and/or at least one fucan which act individually or synergistically with mannitol to reduce losses in crop yield and marketable grade caused by the infestation of growth media with plant pathogenic nematodes, to levels equivalent to those achieved with commercial nematicides, but without posing a risk to the ecosystem or user. In some cases the composition comprises at least one glucan, at least one fucan and at least one mannitol which may be in a weight/weight ratio of approximately 1:2:3 of at least one glucan:at least one fucan:at least one mannitol or between approximately 1:1:1 to 1:1:3 of at least one glucan:at least one fucan:at least one mannitol.

A non-nematicidal composition comprises at least one glucan and/or at least one fucan which act individually or synergistically with mannitol to reduce losses in crop yield and marketable grade caused by the infestation of growth media with plant pathogenic nematodes, to levels equivalent to those achieved with commercial nematicides, but without posing a risk to the ecosystem or user. In some cases the composition comprises at least one glucan, at least one fucan and at least one mannitol which may be in a weight/weight ratio of approximately 1:2:3 of at least one glucan:at least one fucan:at least one mannitol or between approximately 1:1:1 to 1:1:3 of at least one glucan:at least one fucan:at least one mannitol.

Methods and compositions for making bacteriocins are described in some embodiments herein. In some embodiments, pro-polypeptide comprising the bacteriocins in the desired ratios in cis, and separated by cleavage sited can be produced by a microbial cell comprising a nucleic acid encoding the pro-polypeptide. In some embodiments microfluidic devices and methods for making specified mixtures of antimicrobial peptides and/or bacteriocins are described.

Methods and compositions for making bacteriocins are described in some embodiments herein. In some embodiments, pro-polypeptide comprising the bacteriocins in the desired ratios in cis, and separated by cleavage sited can be produced by a microbial cell comprising a nucleic acid encoding the pro-polypeptide. In some embodiments microfluidic devices and methods for making specified mixtures of antimicrobial peptides and/or bacteriocins are described.

The present disclosure provides methods of decreasing a crop residue of a plant, enhancing the availability of a nutrient in a crop residue of a plant, increasing soil organic matter (SOM) with a crop residue of a plant, and reducing erosion with a crop residue of a plant by applying a composition comprising a culture of microalgae to the crop residue.

The present disclosure provides methods of decreasing a crop residue of a plant, enhancing the availability of a nutrient in a crop residue of a plant, increasing soil organic matter (SOM) with a crop residue of a plant, and reducing erosion with a crop residue of a plant by applying a composition comprising a culture of microalgae to the crop residue.

The present disclosure provides methods of decreasing a crop residue of a plant, enhancing the availability of a nutrient in a crop residue of a plant, increasing soil organic matter (SOM) with a crop residue of a plant, and reducing erosion with a crop residue of a plant by applying a composition comprising a culture of microalgae to the crop residue.

Compositions with supramolecular structures for agricultural use include a biostimulant, a supramolecular host chemical or a supramolecular guest chemical configured to engage in host-guest chemistry with the biostimulant, and water, are included. Methods of treating a plant to improve nutrient assimilation, water uptake, or vigor, or a combination thereof, include applying an agriculturally effective amount of the composition to the plant are also included.

Compositions with supramolecular structures for agricultural use include a biostimulant, a supramolecular host chemical or a supramolecular guest chemical configured to engage in host-guest chemistry with the biostimulant, and water, are included. Methods of treating a plant to improve nutrient assimilation, water uptake, or vigor, or a combination thereof, include applying an agriculturally effective amount of the composition to the plant are also included.