AGRONOMIC PERFORMANCE OF ROCKET AS A FUNCTION OF PHOSPHORUS FERTILISATION IN A P-RICH SOIL1

Camila Seno Nascimento,Carolina Seno Nascimento,Arthur Bernardes Cecílio Filho

doi:10.1590/1983-21252020v33n330rc

Camila Seno Nascimento, Carolina Seno Nascimento + Show 1 more

Open Access

https://doi.org/10.1590/1983-21252020v33n330rc

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Journal: Revista Caatinga	Publication Date: Sep 1, 2020
Citations: 3	License type: CC BY 4.0

Affiliation: Universidade Estadual Paulista (Unesp)

Abstract

ABSTRACT In intensive vegetable production systems, it is natural to increase nutrient contents in the soil due to the frequent fertiliser applications, especially phosphorus (P). There are few studies on the response of vegetables to phosphate fertilisation under such conditions. In this context, the objective of this study was to evaluate the agronomic performance of rocket as a function of phosphorus fertilisation in a P-rich Rhodic Eutrudox soil. Five P doses (0, 50, 100, 200, and 300 kg ha-1 P2O5) were evaluated in a randomised complete block design with four replicates. Maximum soil P content and shoot P content at harvest were obtained at a dose of 300 kg ha-1 P2O5. Rocket responded negatively to P fertilisation. The increase of P doses promoted the decrease of height and yield of the crop.

Highlights

In the last few years, rocket has been conquering new markets and increasing its prevalence among vegetables (CHUN et al, 2017)
Despite the growing demand by the population for this leafy green, there are few studies related to this crop, especially regarding the management of phosphate fertilisation, a factor that represents a great amount of the production costs, considering that Brazil imports more than 40% of the phosphate fertilisers used in the country (ANDA, 2015)
The fertilisation programs used for most crops are based on recommendation tables based on the response of plants grown in lownutrient soils, a factor that often does not match with the reality of farmers

Summary

Introduction

In the last few years, rocket has been conquering new markets and increasing its prevalence among vegetables (CHUN et al, 2017). The correct management of mineral fertilisation is one of the main factors that maximise the production efficiency of the rocket crop (CECÍLIO FILHO et al, 2014). Because it is a shortcycle species, it requires a large amount of fertiliser per unit area, so it is very important to develop a balanced fertiliser program that provides adequate nutrient doses centred on the plants’ growing conditions. The fertilisation programs used for most crops are based on recommendation tables based on the response of plants grown in lownutrient soils, a factor that often does not match with the reality of farmers. Due to the intensive cultivation of vegetables, repeated fertilisation is frequent, increasing the nutrient accumulation in the soil.

Objectives

Methods

Results