期刊
JOURNAL OF PLANT NUTRITION
卷 32, 期 3, 页码 443-457出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/01904160802660750
关键词
Musa spp; plant nutrients; mobility nutrients; critical zinc concentration
资金
- EMBRAPA (CPAA, Manaus-AM)
- Produquimica Company
Banana cultivation is considered one of the most important agricultural activities of economic and social importance in Brazil. The objective of this work was to investigate the uptake, retranslocation and the effect of fertilization on the yield and uniformity of banana bunches (Musa spp.) cultivated in Central Amazonian, region with approximately 1.5 million km2 or 150 million hectares. Two experiments were conducted in a Xanthic Ferralsol (dystrophic Yellow Latosol), the predominant soil of the region, examining: i) the nutrient uptake and translocation rate in twelve plants; and ii) the efficiency of zinc use, in a completely randomized blocks in a 42 factorial scheme in split plot design with four zinc sulfate (ZnSO4) rates (0, 30, 60, and 120 g plant-1 cycle-1) and two application times (in the hole together with the seedling or as surface broadcast in the fifth month after planting), with four replicates. Uptake of macronutrients was in the order of potassium (K) nitrogen (N) calcium (Ca) magnesium (Mg) phosphorus (P) and micronutrients in the order of manganese (Mn) iron (Fe) boron (B) zinc (Zn) copper (Cu). The N, P, K, Mg, and Cu have a high retranslocation rate compared to other nutrients investigated. The bunch yield increased significantly in a quadratic fashion with increasing Zn rate and hole application method of zinc was more efficient compared to broadcast application. At high concentration, Zn presents a low mobility in the phloem from the leaves to the fruits. The critical leaf concentration of zinc at the start of inflorescence was 12.9 mg kg-1.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据