ABSTRACT Increasing soil acidity is one of the major factors limiting crop production in Ghana. Hence, identifying cocoa varieties that are well adapted to acidic soils and better extractors of important cocoa nutrients viz phosphorus (P) and potassium (K) is a suitable way to optimize the use of acidic soils to improve cocoa production. A 4 × 12 factorial in completely randomized design with four replications was used to evaluate 12 cocoa varieties grown in four acidic soils for the following traits: height, stem diameter, root length and volume, dry matter ,and nutrient uptake. No significant varietal and soil effects for height and stem diameter were observed. T60/887 × CRG 8914 and PA 150 × EQ 3338 produced higher dry matter yields. Varieties had significantly longer roots and bigger root volumes in Samreboi series than in the other soils. Dry matter yields were highest in PA 150 × EQ 3338 and T60/887 × CRG 8914 across the soils. Absolute amounts of nitrogen (N) and P uptake were highest in PA 150 × PA 88 across the four soils, while K was highest in SPD cross. Nutrients uptake across the varieties was in the order N > P > K in Nzima series and Samreboi series, and N > K > P in Wiawso series and Wacri series. The superiority of T60/887 × CRG 8914, PA 150 × EQ 3338, and PA 150 × PA 88 over the other varieties in terms of growth and nutrient uptake suggest they may be desirable for planting on acidic soils.

中文翻译：

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酸性土壤对可可（Theobroma Cacao L.）品种生长和营养吸收的影响

摘要 土壤酸度增加是限制加纳作物生产的主要因素之一。因此，确定非常适应酸性土壤和更好地提取重要可可营养物质（即磷 (P) 和钾 (K)）的可可品种是优化酸性土壤的使用以提高可可产量的合适方法。使用 4 × 12 完全随机设计的因子和四次重复用于评估在四种酸性土壤中生长的 12 个可可品种的以下性状：高度、茎直径、根长度和体积、干物质和养分吸收。没有观察到显着的品种和土壤对高度和茎直径的影响。T60/887 × CRG 8914 和 PA 150 × EQ 3338 产生更高的干物质产量。与其他土壤相比，Samreboi 系列中的品种具有明显更长的根和更大的根体积。PA 150 × EQ 3338 和 T60/887 × CRG 8914 的土壤干物质产量最高。在四种土壤中，PA 150 × PA 88 中氮 (N) 和 P 的绝对吸收量最高，而 SPD 杂交中 K 的绝对量最高。在 Nzima 系列和 Samreboi 系列中，不同品种的养分吸收顺序为 N > P > K，在 Wiawso 系列和 Wacri 系列中 N > K > P。T60/887 × CRG 8914、PA 150 × EQ 3338 和 PA 150 × PA 88 在生长和养分吸收方面优于其他品种，表明它们可能适合在酸性土壤上种植。在 Nzima 系列和 Samreboi 系列中，不同品种的养分吸收顺序为 N > P > K，在 Wiawso 系列和 Wacri 系列中 N > K > P。T60/887 × CRG 8914、PA 150 × EQ 3338 和 PA 150 × PA 88 在生长和养分吸收方面优于其他品种，表明它们可能适合在酸性土壤上种植。在 Nzima 系列和 Samreboi 系列中，不同品种的营养物质吸收顺序为 N > P > K，在 Wiawso 系列和 Wacri 系列中 N > K > P。T60/887 × CRG 8914、PA 150 × EQ 3338 和 PA 150 × PA 88 在生长和养分吸收方面优于其他品种，表明它们可能适合在酸性土壤上种植。