SOIL FERTILITY, NUTRITION AND EARLY GROWTH OF PHYSIC NUT AS AFFECTED BY NITROGEN FERTILIZATION

被引：3
|
作者：
Freiberger, Mariangela Brito [1 ]
Guerrini, Irae Amaral [1 ]
Castoldi, Gustavo [1 ]
de Favare, Lilian Guimaraes [1 ]
机构：
[1] Sao Paulo State Univ, Coll Agr Sci, BR-18603970 Botucatu, SP, Brazil
来源：
JOURNAL OF PLANT NUTRITION | 2015年 / 38卷 / 09期
基金：
巴西圣保罗研究基金会;
关键词：
Jatropha curcas L; SPAD index; nutrient accumulation; dry matter; CHLOROPHYLL METER; LEAF NITROGEN; LEAVES; POTASSIUM; MAGNESIUM; MAIZE; CORN; TEA;
D O I：
10.1080/01904167.2014.983120
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
The initial growth and mineral nutrition of the physic nut (Jatropha curcas L.) as a function of nitrogen (N) fertilization was investigated. The transplanting of seedlings was carried out in plastic pots filled with 50 dm(3) of a Rhodic Hapludox, under a plastic greenhouse. In addition to a control treatment, the dosages of 0, 40, 80, 120, and 160mg dm(-3) N were tested. The results demonstrated that N fertilization for the cultivation of physic nut could be added as top dressing from 60days after planting with a dosage of 65mg dm(-3). A SPAD index of 46 can be used as a nutritional reference to its initial development. Furthermore, the results suggested that the order of nutrient accumulation by the physic nut plants is as follows: potassium (K) > N > magnesium (Mg) > calcium (Ca) > phosphorus (P) > sulfur (S) > iron (Fe) > manganese (Mn) > boron (B) > zinc (Zn) > copper (Cu).
引用
收藏
页码：1309 / 1322
页数：14
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