Seed potato minituber production in an aeroponic system under tropical conditions: electrical conductivity and plant density
Seed potato minituber production in an aeroponic system under tropical conditions: electrical conductivity and plant density
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DOI：
10.1080/01904167.2018.1497652
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发表时间：
2018-01-01
影响因子：
2.1
通讯作者：
Villani Purquerio, Luis Felipe
中科院分区：
文献类型：
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作者：
Calori, Alex Humberto;Factor, Thiago Leandro;Villani Purquerio, Luis Felipe
巴西的大多数种子马铃薯都是在含有基质的床、盆或箱中生产的，但产量很低。气培系统是提高产量的一种策略。然而，营养液的浓度，通过改变电导率（EC）来管理，是最重要的，可以改变植物的反应。植株密度是获得高产的另一个重要因素。因此，本研究的目的是确定营养液EC和植株密度对气培系统中植物和种子马铃薯产量的影响。试验设计为随机区组，采用裂区设计，设4个重复，样区为EC，样区为密度。对两个马铃薯品种进行了试验。Agata和Asterix的最佳ECs分别为2.1和1.7dSm（-1）。两个品种的最高种植密度（100株m(-2)）产生了最高的最小产量和经济可行性。
Most seed potatoes in Brazil are produced in beds, pots or boxes containing substrate, but the yields are low. Aeroponic systems are one strategy for increasing the yield. However, the concentration of nutrient solutions, managed by varying the electrical conductivity (EC), is of upmost importance and can alter plant responses. Plant density is another important factor for obtaining high yields. The objective of this study was thus to determine the effect of nutrient-solution EC and plant density on plant and seed potato production in aeroponic system. The experimental design was a randomized block with a split-plot design and four replicates, with plots for EC and subplots for plant density. Two potato cultivars were tested. The best ECs for Agata and Asterix were 2.1 and 1.7dSm(-1), respectively. The highest plant density (100 plants m(-2)) for both cultivars produced the highest minituber yield and economic feasibility.