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

页码：2513 / 2521

页数：9

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