Dados do Trabalho

Título

EXPLORING THE IMPACT OF BIOCHAR AMMONIUM PHOSPHATE CONTROLLED-RELEASE FERTILIZER ON WHEAT: GROWTH, YIELD, AND NUTRIENT UPTAKE

Resumo

Acidic soils globally limit agricultural production. Biochar (BC) shows promise as a solution by improving soil fertility, immobilizing toxic metals, and enhancing nutrient exchange capacity. However, BC application can vary in plant and soil response and has low nutrient content, particularly nitrogen (N) and phosphorus (P). Impregnating biochar with nutrients like N and P has gained recent attention. This study investigates the effects of nitrogen and phosphorus-impregnated biochar (BCRF) on wheat growth, yield, and nutrient uptake. The research characterizes a controlled-release biochar-based fertilizer and evaluates its impact on wheat cultivation and acid soil fertility compared to conventional fertilization. Soil incubation experiments assess soil response to BCRF treatment, focusing on pH, N availability, aluminum immobilization, and P availability. A parallel greenhouse experiment with Pantera wheat cultivar assesses BCRF's impact on growth. Results show diverse responses during soil incubation. BCRF outperforms in N-NH4, nearly doubling NH4 concentration by day 60, and consistently exhibits higher P availability. Fertilizer application reduces aluminum content without affecting extractability and boosts aboveground biomass. BCRF notably produces more spikes and seeds without affecting grain yield. Fertilizer application increases grain N content by 38.15% and P content by 32.6% compared to the control. BCRF extracts more N and P from aerial biomass than the control. BC-NP outperforms conventional fertilization in P extraction, but N extraction's no significant difference. In conclusion, nitrogen and phosphorus-impregnated biochar enhances nutrient availability, particularly phosphorus, and stimulates wheat biomass growth. It offers a promising alternative to conventional fertilization, improving acid soil fertility. 

Palavras-chave

Biochar, Phosphorus and Nitrogen Availability, Acidic Soils

Instituição financiadora

FONDECYT ANID - UNIVERSIDAD DE LA FRONTERA - INIA CARILLANCA

Agradecimentos

PROYECTO FONDECYT 1211387; PROYECTO FONDECYT 1220190