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首页> 外文会议>STI/PUB/1285; Consultants Meeting on Management Practices for Improving Sustainable Crop Production in Tropical Acid Soils; 19990501-03; Vienna(AT) >EVALUATING THE RESPONSE OF SELECTED COMMON BEAN GENOTYPES TO THE APPLICATION OF PHOSPHATE ROCK PRODUCTS IN ACID SOILS OF CUBA
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EVALUATING THE RESPONSE OF SELECTED COMMON BEAN GENOTYPES TO THE APPLICATION OF PHOSPHATE ROCK PRODUCTS IN ACID SOILS OF CUBA

机译：评价选择的普通豆型基因型对磷酸钙产品在古巴酸性土壤中应用的响应

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Glasshouse experiments were carried out to evaluate the response of common bean {Phaseolus vulgaris) genotypes to the application of phosphorus (P) sources varying in solubility and to compare the agronomic effectiveness of local phosphate rock (PR) products in two acid soils (Acrisol and Rhodic Ferralsol) of Cuba. Recommended common bean genotypes were evaluated, i.e. BAT 477, DOR 364, DOR 390 and Censa were grown in the Acrisol and BAT 477, DOR 364, BAT 58 and CC 25-9(N) in the Rhodic Ferralsol. The ~(32)P isotopic dilution method was utilised to measure the P uptake from the following P sources: Trinidad de Guedes PR, a partially acidulated PR product (FPA 50) and water-soluble P fertilizers, i.e. single (SSP) or triple super phosphate (TSP), which were used as reference of comparison. A control (without P application) treatment was also included. Genotypic differences in dry matter production, total P uptake and in the plant P derived from the applied P sources were found, resulting in significant genotypic differences on the agronomic effectiveness of P sources studied. However, this effect varied with soil type. The direct application of Trinidad de Guedes PR was only efficient, i.e. % Pdff was higher than 30%, for DOR 364 in the Acrisol. The FPA 50 was efficient for all common bean genotypes in both soils. In the Acrisol on the average for the genotypes studied from 1,0 to 2,9 kg of P as FPA 50 were equivalent to 1 kg of P as SSP. In Rhodic Ferralsol, from 1,4 to 2,0 kg of P as FPA 50 were equivalent to 1 kg of P as TSP. The results obtained are useful for breeding programs aiming at obtaining common bean genotypes with high P use efficiency for areas having P deficient soils and where locally available cheap P sources of low (PR) or medium solubility (FPA 50) can be applied. Further field validation studies should be carried out in areas, which are representative of studied acid soils.
机译：进行了温室实验，以评估普通豆（菜豆）基因型对不同溶解度的磷（P）源的施用的响应，并比较了两种酸性土壤（Acrisol和Rhodic Ferralsol）的古巴。评价了推荐的常见豆基因型，即在Acrisol中生长了BAT 477，DOR 364，DOR 390和Censa，在Rhodic Ferralsol中生长了BAT 477，DOR 364，BAT 58和CC 25-9（N）。 〜（32）P同位素稀释法用于测量以下P来源的P吸收：特立尼达·德古迪斯PR，部分酸化的PR产品（FPA 50）和水溶性P肥料，即单（SSP）或三重P超级磷酸盐（TSP），用作比较参考。还包括对照（无磷施用）治疗。发现干物质生产，总磷吸收量以及来自施用磷源的植物磷的基因型差异，导致研究磷源农艺有效性的显着基因型差异。但是，这种影响随土壤类型而变化。对于Acrisol中的DOR 364，直接使用特立尼达·瓜迪斯PR仅有效，即Pdff％高于30％。 FPA 50对两种土壤中所有常见的豆基因型均有效。在Acrisol中，平均研究的基因型从1,0到2.9 kg P作为FPA 50相当于1 kg P作为SSP。在Rhodic Ferralsol中，从1,4到2,0千克P作为FPA 50相当于1千克P作为TSP。获得的结果可用于育种计划，以期在土壤缺磷的地区获得具有高磷利用效率的普通豆基因型，并在这些地方可以使用当地廉价的低磷（PR）或中等溶解度（FPA 50）磷源。应在代表所研究的酸性土壤的地区进行进一步的田间验证研究。

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