GROWTH, YIELD AND NITRATE ACCUMULATION OF IRRIGATED CARROT AND OKRA IN RESPONSE TO NITROGEN FERTILIZATION

被引：0
|
作者：
Mubashir, M. [1 ]
Malik, S. A. [1 ]
Khan, A. A. [1 ]
Ansari, T. M. [2 ]
Wright, S.
Brown, M. V. [3 ]
Islam, K. R.
机构：
[1] BZ Univ, Inst Pure & Appl Biol, Multan, Pakistan
[2] BZ Univ, Dept Chem, Multan, Pakistan
[3] Ohio State Univ S Ctr, Piketon, OH 45661 USA
来源：
PAKISTAN JOURNAL OF BOTANY | 2010年 / 42卷 / 04期
关键词：
TABLE BEETS; SPINACH; VEGETABLES; PHOSPHORUS;
D O I：
暂无
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
A randomized block experiment conducted on Sultanpur silt loam evaluated the N effects on growth and nitrate accumulation of okra (Hibiscus esculents L. cv. Sabz pari) and carrot (Daucus carota L. cv. T29). Treatments consisted of a control, 100, 150 and 200 kg N ha(-1). Significantly higher yields of carrot and okra were recorded at 150 kg N ha(-1). Nitrate concentration in both increased (> 35 to 200%) with increasing N. An excessive nitrate accumulation in both was recorded at 200 kg N ha(-1). Okra had 1.7 times higher nitrate accumulation than carrot. Early season okra had a significantly higher nitrate (similar to 10%) than late season. Gross income and profitable return responded quadratically with increasing N. Results suggest that N fertilization of carrot and okra at 150 kg N ha(-1) is optimum for economical yields with less accumulation of nitrate in vegetables.
引用
收藏
页码：2513 / 2521
页数：9
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