Jatropha seed oil content and yield under different irrigation and potassium fertilization levels

Engenharia Agrícola

Fábio P. De Deus¹  Manoel A. De Faria²  Ednaldo L. De Oliveira¹  Pedro Castro Neto² 

[1] ,UFLA Departamento de Engenharia

关键词: chemical extraction;    biodiesel;    oilseed;    drip irrigation;    extração química;    biodiesel;    oleaginosa;    gotejamento;   

DOI  :  10.1590/S0100-69162012000600010

来源: SciELO

【 摘 要 】

The aim of this research was to evaluate the effects of different irrigation depths and potassium dosages, of Jatropha seed oil content and yield. The experimental design used was randomized blocks, in split-plots, with four replicates. The treatments were four water depths (plots) and four potassium dosages (subplots) applied through irrigation water. The water depths were applied based on the percentage of accumulated evaporation of a Class A (ECA) tank and of rainfall, as following: L0 = without irrigation, L40, L80 and L120, representing 40, 80 and 120% of the balance, respectively. The potassium dosages were K30, K60, K90 and K120 (30, 60, 90 and 120kg ha-1 of potassium, respectively). The oil extraction of samples was done through chemical extraction by organic solvent. The seeds used in this test were from the sampling of two seed productions from 2009, second year of crop production. It was possible to observe that irrigation use increased oil yield and decreased the oil content of Jatropha seed. Potassium fertilization did not influence oil content and yield. There was a relative increase of efficiency in water use producing oil until certain water depth, and after that there was a decrease.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License