Efficiency of use of production factors water and potassium in the watermelon crop irrigated with water of reuse

被引：12
|
作者：
de Oliveira, Paulo G. F. [1 ]
Moreira, Olavo da C. [1 ]
Branco, Lourenco M. C. [1 ]
Costa, Raimundo N. T. [2 ]
Dias, Chrislene N. [1 ]
机构：
[1] DEA UFC, Fortaleza, Ceara, Brazil
[2] Univ Fed Ceara, Dept Agr Engn, Fortaleza, Ceara, Brazil
来源：
REVISTA BRASILEIRA DE ENGENHARIA AGRICOLA E AMBIENTAL | 2012年 / 16卷 / 02期
关键词：
Citrullus lanatus; productivity; potassium compost; YIELD;
D O I：
10.1590/S1415-43662012000200004
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The research was conducted at Irrigated Perimeter of Curu Pentecoste, in an area of family cultivation and aimed to obtain the efficiency of use of water and potassium in the watermelon crop with reuse of irrigation water in furrow irrigation system. A completely randomized block design with split plots and four replications was used. Five irrigation levels were applied to the plots: 25, 75, 100, 150 and 200% of maximum crop evapotranspiration. The following levels of potassium fertilization were applied in the subplots: 0, 30, 60 and 120 kg ha(-1) of K2O. The potassium level associated with the recommendation of soil analysis (60 kg ha(-1)) provided the highest average efficiency of water use and resulted in an increase of 180.6 kg ha(-1) of watermelon for each kg ha(-1) of K2O applied.
引用
收藏
页码：153 / 158
页数：6
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