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Updated: Aug 5, 2025

Microplot Design and Plant and Soil Sample Preparation for 15Nitrogen Analysis

Microplot Design and Plant and Soil Sample Preparation for 15Nitrogen Analysis

Published on: May 10, 2020

Fertilizer source and application method influence sugarcane production and nutritional status.

Sérgio Gustavo Quassi de Castro¹, Anderson Prates Coelho², Saulo Augusto Quassi de Castro³

¹AgroQuatro-S Experimentation and Applied Agronomic Consultancy, Orlândia, São Paulo, Brazil.

Frontiers in Plant Science

|March 27, 2023

Summary

Optimizing sugarcane ratoon fertilization is key. Early harvest fertilization strategies, using specific liquid or solid fertilizer applications, significantly boosted stalk and sugar yields by up to 33%.

Keywords:

liquid fertilizer nitrogen phosphorus potassium straw

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Area of Science:

Agricultural Science
Agronomy
Soil Science

Background:

Sugarcane ratoon fertilization is influenced by variable weather during the harvest season (April-November) in south-central Brazil.
Effective fertilization management is crucial for optimizing sugarcane yield and sustainability.

Purpose of the Study:

To compare sugarcane performance based on fertilizer sources and application methods.
To evaluate early vs. late harvest timing impacts on fertilization strategies for sugarcane ratoon.

Main Methods:

Field studies over two cropping seasons.
Randomized block design with a 2x3 factorial scheme (solid/liquid fertilizer x 3 application methods).
Application methods: above straw, under straw, incorporated into the row.

Main Results:

Fertilizer source and application method interacted significantly for early-season harvests.
Optimal early-season yields (up to 33% increase) achieved with incorporated liquid fertilizer or under-straw solid fertilizer.
Late-season liquid fertilizer increased stalk yield by 25% in low-rainfall conditions; no difference in normal rainfall seasons.

Conclusions:

Fertilization management for sugarcane ratoon must consider the specific harvest period.
Tailoring fertilizer type and application method to harvest timing enhances sugarcane production sustainability.