THE EFFECT OF CONTROLLED-RELEASE FERTILIZER OSMOCOTE ON GROWTH, YIELD AND COMPOSITION OF ONION PLANTS

被引：18

作者：

AMANS, EB

SLANGEN, JHG

机构：

[1] Department of Agronomy, Ahmadu Bello University, Zaria

[2] Department of Soil Science, Plant Nutrition Agricultural University, Wageningen

来源：

FERTILIZER RESEARCH | 1994年 / 37卷 / 02期

关键词：

ALLIUM-CEPA L; CONTROLLED-RELEASE FERTILIZER; MINERAL CONTENT; N-SUPPLY; SOLUBLE FERTILIZER;

D O I：

10.1007/BF00748548

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

In a glasshouse and field experiments, the performance of controlled-release fertilizer ''Osmocote'' was compared to that of a conventional soluble fertilizer at equivalent N-amounts, using onion (Allium cepa L.) as a test crop. In the glasshouse experiment, ''Osmocote 14-6-12'' and ''Osmocote 15-5-11'' (with nutrient release duration of 3 and 4 months, respectively) were compared with a soluble compound fertilizer (12-5-15 NPK) on onion variety Stuttgarter Reisen grown from setts, and DS-79 grown from seed. Osmocote 14-6-12 improved growth and yield of the onions, and also increased the concentration of N in variety Stuttgarter Reisen. Osmocote 15-5-11 was comparable to Osmocote 14-6-12 on variety DS-79 only, but reduced the concentration on NPK and Mg in the bulbs. In the field experiment, the application of Osmocote 14-6-12 resulted in less plant mortality, but produced higher bulb yield than the soluble fertilizer only in a situation of oversupply of N.

引用

页码：79 / 84

页数：6

共 11 条

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