Nematode control
Disclosed herein is a method for controlling nematode populations, particularly soil nematode populations. Certain embodiments comprise applying 4-hydroxybenzylalcohol, Sinapis alba plant extract, Sinapis alba seed meal, or a combination thereof, to soil, optionally in the presence of a trap crop. A hatching factor and/or a nematicide may also be applied to the soil, either substantially simultaneously with the 4-hydroxybenzyl alcohol, Sinapis alba plant extract, Sinapis alba seed meal, or combination thereof, or sequentially in any order. Certain embodiments concern applying 4-hydroxybenzyl alcohol to soil that contains potato cyst nematode eggs. The 4-hydroxybenzyl alcohol may be obtained by an aqueous extraction of Sinapis alba plant material.
1. A method for controlling nematodes, comprising contacting soil where trap crop plants are cultivated, with 4-hydroxybenzyl alcohol, wherein the soil contains, or at risk of containing, nematode eggs, and wherein the 4-hydroxybenzyl alcohol is selectively applied to portions of the soil around a rooting area of the trap crop plants, to thereby affect nematode egg hatch, wherein the rooting area is from greater than zero and up to 3 feet from the trap crop plants, and subsequent migration of hatched nematode to roots of the trap crop plants.
2. The method of claim 1 , wherein the trap crop plants are solanaceous trap crop plants, cruciferous trap crop plants, grain trap crop plants, tuber-forming trap crop plants, non- Solanum species trap crop plants, or a combination thereof.
3. The method of claim 1 , wherein the contacting comprises selectively applying the 4-hydroxybenzyl alcohol, or selectively applying Sinapis alba plant extract, Sinapis alba seed meal, or combination thereof, to the rooting area of the trap crop plants.
4. The method of claim 1 , further comprising applying a hatching factor, a nematicide, or both to the soil.
5. The method of claim 4 , wherein the hatching factor comprises a potato hatching factor, a potato root diffusate, a tomato root diffusate, a soybean root diffusate, a sugar beet root diffusate, or any combination thereof.
6. The method of claim 4 , wherein the hatching factor is applied substantially simultaneously with the 4-hydroxybenzyl alcohol, Sinapis alba plant extract, Sinapis alba seed meal, or a combination thereof, or the hatching factor is applied from greater than zero to 6 months after application of the 4-hydroxybenzyl alcohol, Sinapis alba plant extract, Sinapis alba seed meal, or a combination thereof.
7. The method of claim 4 , wherein the hatching factor is applied to the soil a distance from greater than zero to 3 feet from a trap crop plant.
8. The method of claim 4 , wherein the nematicide is applied substantially simultaneously with the 4-hydroxybenzyl alcohol, Sinapis alba plant extract, Sinapis alba seed meal, or a combination thereof.
9. The method of claim 4 , wherein a hatch factor is applied substantially simultaneously with the 4-hydroxybenzyl alcohol, Sinapis alba plant extract, Sinapis alba seed meal, or combination thereof, and the nematicide.
10. The method of claim 4 , wherein the nematicide is applied from greater than zero to 6 months after application of the 4-hydroxybenzyl alcohol, Sinapis alba plant extract, Sinapis alba seed meal, or a combination thereof.
11. The method of claim 4 , wherein the hatch factor is applied from greater than zero to 6 months after application of the 4-hydroxybenzyl alcohol, Sinapis alba plant extract, Sinapis alba seed meal, or combination thereof.
12. The method of claim 1 , wherein the nematode eggs are encysted eggs.
13. The method of claim 12 , wherein the nematode egg is a potato nematode egg, a soy nematode egg, a sugar beet nematode egg, or a combination thereof.
14. The method of claim 1 , wherein contacting the soil with the 4-hydroxybenzyl alcohol comprises applying an amount of Sinapis alba seed meal of from 500 lbs/acre to 4,000 lbs/acre to the soil.
15. The method of claim 1 , wherein applying the 4-hydroxybenzyl alcohol to the soil comprises applying an amount of 4-hydroxybenzyl alcohol of from greater than zero to 100 lbs/acre.
16. The method of claim 1 , wherein applying the 4-hydroxybenzyl alcohol comprises applying a formulation comprising a concentration of 4-hydroxybenzyl alcohol of from greater than zero to 6,000 μmol/mL.
17. A method, comprising:
applying 4-hydroxybenzyl alcohol, Sinapis alba plant extract, Sinapis alba seed meal, or a combination thereof, to soil where trap crop plants are cultivated, and wherein the soil contains, or at risk of containing, nematode eggs, wherein the 4-hydroxybenzyl alcohol, Sinapis alba plant extract, Sinapis alba seed meal, or a combination thereof, is selectively applied around a rooting area of the trap crop plants, to thereby affect nematode egg hatch, wherein the rooting area is from greater than zero and up to 3 feet from the trap crop plants, and subsequent migration of hatched nematodes to the roots of the trap crop plants; and
applying a nematicide and a hatching factor to the soil from greater than zero to 6 months after the 4-hydroxybenzyl alcohol, Sinapis alba plant extract, Sinapis alba seed meal, or a combination thereof is applied, the nematicide and the hatching factor being applied substantially simultaneously, or sequentially in any order.
18. The method of claim 1 , wherein contacting the soil with 4-hydroxybenzyl alcohol comprises:
selectively applying 4-hydroxybenzyl alcohol formulated in a solvent to the soil; or
selectively applying Sinapis alba plant extract, Sinapis alba seed meal, or a combination thereof to the soil, wherein the 4-hydroxybenzyl alcohol is formed in situ around the rooting area of the trap crop; or
a combination thereof.