Fertilization of Tifton 85 with Swine Liquid Manure

Marinho Rocho Da Silva,Oscarlina Lúcia Dos Santos Weber,Joadil Gonçalves De Abreu,Ana Paula Alves Barreto Damasceno,Flabiele Soares Da Silva,Edna Maria Bonfim-Silva

doi:10.4236/as.2019.107070

Abstract

The objective was to verify the possibility of supplying the nutritional requirement of Tifton 85 grass with swine liquid manure in an intensive management system. The experiment was carried out in a randomized block design, with four treatments of swine liquid manure doses: 0, 70, 140 and 210 m3·ha-1, divided into seven applications and a treatment of mineral fertilization of 200 kg of nitrogen ha-1·year-1. Samples of the collected plant material were weighed to obtain fresh mass taken for drying and then ground for bromatological determination. The dry mass production data were obtained by dry matter accumulation during the cuts and averages were made for the variables; plant height, crude protein, NDF, ADF, neutral detergent insoluble protein (NDIP) and acid detergent insoluble protein (ADIP). The data were subjected to variance analysis, performing regression for swine liquid manure doses and averages test (Dunnett test) to compare the doses with the mineral fertilization. Higher plant heights, dry mass production, crude protein content, neutral detergent insoluble protein content and lower neutral detergent fiber content in Tifton 85 grass were observed with mineral fertilization. In the variables, acid detergent fiber and acid detergent insoluble protein there was no difference (P = 0.05) between the mineral fertilization and the swine liquid manure doses. There was a linear increase (P = 0.05) of swine liquid manure doses only in dry matter production. Swine liquid manure doses up to 210 m3·ha-1·year-1 do not meet the entire nutritional requirement of Tifton 85 grass, recommending the evaluation of higher swine liquid manure doses or complementation with mineral fertilization.

Highlights

Swine farming is considered a potentially polluting activity due to the waste production generated, which consist of animals feces, leftover ration, urine, excess water from drinkers and water used in the hygiene of the stalls [1]. there is great concern in making the rational disposal of these residues in the environment, so that there is no compromise of soil, plants and water resources [2]
The dry mass production data were obtained by dry matter accumulation during the cuts and averages were made for the variables; plant height, crude protein, neutral detergent insoluble fiber (NDF), acid detergent insoluble fiber (ADF), neutral detergent insoluble protein (NDIP) and acid detergent insoluble protein (ADIP)
When comparing the mineral fertilization with swine liquid manure doses by Dunnett means test (P = 0.05), higher plant height, dry mass production, crude protein content, NDIP content and lower NDF content in Tifton 85 grass were observed in mineral fertilization (Figure 2)

Summary

Introduction

Swine farming is considered a potentially polluting activity due to the waste production generated, which consist of animals feces, leftover ration, urine, excess water from drinkers and water used in the hygiene of the stalls [1]. there is great concern in making the rational disposal of these residues in the environment, so that there is no compromise of soil, plants and water resources [2]. The swine liquid manure contains in its composition, organic matter, nitrogen, phosphorus, potassium, calcium, sodium, magnesium, manganese, iron, zinc and copper [5] [6]. It contains from 70% to 80% of total N as ammonium, which is an available form of N for plants [7]. The application of swine liquid manure increases the supply of N [8] and P [6] to soil, in order to promote plant growth and enhance the leaf/stem ratio [1]

Objectives

Methods

Results

Conclusion