(a) The Texas Agriculture Code, Chapters 128 and 188 provide for the establishment of liens in favor of sellers of agricultural chemicals, agricultural seeds, or animal feed, or of a provider of labor in connection with the agricultural chemicals, agricultural seeds, or animal feed. Chapters 128 and 188 also provide for the department to establish procedures for settlement of disputes regarding the amount owed a lien claimant for agricultural chemicals or labor (§128.012) or animal feed (§188.012). A person may not file a notice of claim of lien if a settlement of a dispute between the lien claimant and the debtor has been submitted to the department under the Texas Agriculture Code, §128.012 and §188.012, and is pending.(b) This subchapter applies only to disputes regarding amounts due for the sale of agricultural chemicals, or animal feed or regarding costs of labor in connection with the sale of agricultural chemicals or feed where notice has been provided before purchase to the buyer (debtor) of such chemicals or animal feed or labor in accordance with the Texas Agriculture Code, §128.006 and §188.006.