Phosphate Fertilizer Doses in Carrot Production in an Organic System

Phosphate Fertilizer Doses in Carrot Production in an Organic System

Abstract The growing consumer demand for organically grown vegetables highlights the need for research into organic fertilization strategies. Phosphorus, a key nutrient required in large quantities, warrants further investigation into its application doses and sources, particularly for short-cycle c...

Full description

Saved in:
Bibliographic Details
Main Authors: Joseantonio Ribeiro de Carvalho, Thatiane Nepomuceno Alves, Antonio Ismael Inácio Cardoso, Jolinda Mércia de Sá, Rogério Lopes Vieites, Emanuele Possas de Souza, César Augusto Santos, Jorgiani de Ávila, Renan Lima de Sousa
Format: Article
Language:English
Published: Instituto de Tecnologia do Paraná (Tecpar) 2025-08-01
Series:Brazilian Archives of Biology and Technology
Subjects:
Daucus carota L.
bone meal
thermophosphate
organic fertilization.
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132025000100213&lng=en&tlng=en
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Abstract The growing consumer demand for organically grown vegetables highlights the need for research into organic fertilization strategies. Phosphorus, a key nutrient required in large quantities, warrants further investigation into its application doses and sources, particularly for short-cycle crops like carrots. This study evaluated the efficacy of bone meal and Yoorin® thermophosphate as organic phosphorus sources in carrot production. The experiment was conducted using the 'Fernanda' hybrid (Feltrin®) at 'Sítio Alvorada' in Botucatu-SP, Brazil. A randomized block design with four replications in a 2 x 6 factorial arrangement was employed, testing two organic fertilizers (bone meal and Yoorin® thermophosphate) at six phosphorus doses (0, 360, 720, 1080, 1440, and 1800 kg P₂O₅ ha⁻1). Parameters assessed included fresh weight of shoots, roots, total biomass, plant and root length, diameter, yield, and root physicochemical properties (pH, soluble solids, titratable acidity, and the 'ratio'). Bone meal's slower nutrient release required higher doses (1586 kg P₂O₅ ha⁻1) for optimal performance, while Yoorin® thermophosphate achieved peak effectiveness at lower doses (974 kg P₂O₅ ha⁻1). Excessive phosphorus application beyond optimal doses led to yield reductions. No significant variations were observed in physicochemical attributes. Bone meal produced higher root yields compared to Yoorin® thermophosphate, but this difference was significant only at application doses above 1440 kg P₂O₅ ha⁻1.
ISSN:1678-4324

Similar Items