Assessment of organophosphate pesticide residue in rice soil and farmers' practices: towards sustainable rice farming in conception, tarlac/ Hermonio V. Flores III, Erico S. Ladra, Christopher John O. Lalis, and John Joshua P. Mandal.--

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Flores, Herminio V III [author]

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Material type: Text

TextEdition: BTH GF 41 F56 2025Description: viii, 113pages: 29cmContent type:

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BTH GF 41 F56 2025

Dissertation note: College Of Science.-- Bachelor of science in environmental science: Technological University of the Philippines, 2025. Summary: This study examines organophosphate pesticide residues in rice soils and farmers' practices in three barangays of Concepcion, Tarlac_Talimundoc San Miguel, Pitabunan, and Sto. Niño over three months. It assesses soil properties, pesticide practices, residue levels, their correlations, and sustainable recommendations. Soil samples, tested via Gas Chromatography-Mass Spectrometry, showed undetectable residues (<0.01 mg/kg) pre- and post-harvest, despite widespread Brodan and Malathion use, likely due to leaching in sandy loam soils (Talimundoc San Miguel, Sto. Niño) and loam (Pitabunan), and degradation at near-neutral pH (6.38–6.64). All 195 male farmers used chemical pesticides; 38.9%-67.7% applied with the wind, increasing drift, and 31.5%-63.2% used full protective gear, linking to health issues like eye irritation (52%-71.7%) and headaches (38.35%-60.4%). Improper disposal (19.7%-42.6% left in fields) risked non-target species (e.g., dragonflies, frogs). Low IPM (25%-32.9%) and INM (24.1% -27.6%) adoption showed chemical reliance, despite 69.23%-75% hazard awareness. Undetectable residues suggest rapid dissipation but not risk elimination. Recommendations include promoting IPM, protective gear, better disposal, soil testing, and organic fertilizers. These findings offer baseline data for sustainable rice farming in Concepcion, Tarlac, enhancing soil health, farmer safety, and biodiversity.

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Item type	Current library	Shelving location	Call number	Copy number	Status	Date due	Barcode
Bachelor's Thesis COS	TUP Manila Library	Thesis Section-2nd floor	BTH GF 41 F56 2025 (Browse shelf(Opens below))	c.1	Not for loan		BTH0006349

Bachelor's thesis

College Of Science.--
Bachelor of science in environmental science: Technological University of the Philippines,
2025.

Includes bibliographic references and index.

This study examines organophosphate pesticide residues in rice soils and farmers' practices in three barangays of Concepcion, Tarlac_Talimundoc San Miguel, Pitabunan, and Sto. Niño over three months. It assesses soil properties, pesticide practices, residue levels, their correlations, and sustainable recommendations. Soil samples, tested via Gas Chromatography-Mass Spectrometry, showed undetectable residues (<0.01 mg/kg) pre- and post-harvest, despite widespread Brodan and Malathion use, likely due to leaching in sandy loam soils (Talimundoc San Miguel, Sto. Niño) and loam (Pitabunan), and degradation at near-neutral pH (6.38–6.64). All 195 male farmers used chemical pesticides; 38.9%-67.7% applied with the wind, increasing drift, and 31.5%-63.2% used full protective gear, linking to health issues like eye irritation (52%-71.7%) and headaches (38.35%-60.4%). Improper disposal (19.7%-42.6% left in fields) risked non-target species (e.g., dragonflies, frogs). Low IPM (25%-32.9%) and INM (24.1% -27.6%) adoption showed chemical reliance, despite 69.23%-75% hazard awareness. Undetectable residues suggest rapid dissipation but not risk elimination. Recommendations include promoting IPM, protective gear, better disposal, soil testing, and organic fertilizers. These findings offer baseline data for sustainable rice farming in Concepcion, Tarlac, enhancing soil health, farmer safety, and biodiversity.

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