Abstract Incessant interactions between biotic and abiotic factors affect the physical quality of harvested, stored, and marketed beans. We investigated the interactions between variety and method of storage on the quality of harvested and stored beans in four contrasting agro-locations. Focus group discussions identified three varieties - a local speckled purple variety (Sp), and two improved ones: oval-shaped yellow (Oy) and round-shaped yellow (Ry), preferred by farmers for different reasons. Moisture, mechanical damage, bruchid infestation, bruchid damage, moldy/disease/discoloration (MDD), shriveling, impurities, and weight loss were analyzed at harvest and during storage in woven polypropylene (PP) or air-tight PICS bags. The average overall damage at harvest exceeded the limits set by local standards 2–3-fold, and the effect of variety was significant. The total damage of Ry (11.9 ± 0.7) surpassed that of Sp and Oy by factors of 2.8 and 2.5, respectively. Furthermore, the mean pre-storage bruchid infestation of Ry (1.4 Log counts/kg) surpassed Sp and Oy infestations by factors of 1.5 and 15, respectively. In storage, the quality was also dependent on variety. In the PP bags, the varietal differences were evident in all the attributes except MDD and insect damage, and the interaction between variety and location was significant on bruchid counts and bruchid damage. Variety Ry suffered more bruchid damage across all locations while Sp was attacked more in the cooler/humid agro-locations, compared to Oy, which was attacked more in the warmer/drier locations. With PICS bags, the varieties differed on the overall weight loss (Ry: 8.5 ± 4.1%, Sp: 2.3 ± 0.4%, Oy: 2.9 ± 2.7%). Results suggest that the air-tight storage bags are not suitable for some bean varieties. Further, careful pre-storage handling, andsorting for quality improvement, and actions to disinfest the beans before bagging need emphasis. In this regard, the cooler/humid agro-locations require closer attention.

中文翻译：

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坦桑尼亚北部小型农场商店普通豆类的质量和可储存性：对农业地点、品种和储存方法影响的多变量分析

摘要 生物和非生物因素之间不断的相互作用会影响收获、储存和销售的豆类的物理质量。我们调查了品种和储存方法之间的相互作用对四个不同农业地点收获和储存的豆类质量的影响。焦点小组讨论确定了三个品种 - 一个本地斑点紫色品种 (Sp) 和两个改良品种：椭圆形黄色 (Oy) 和圆形黄色 (Ry)，由于不同的原因受到农民的青睐。在收获时和在编织聚丙烯 (PP) 或气密 PICS 袋中储存期间，对水分、机械损伤、布氏虫侵染、布氏木霉损伤、发霉/疾病/变色 (MDD)、皱缩、杂质和重量损失进行了分析。收获时的平均总体损害超过当地标准规定的 2-3 倍，且品种效应显着。Ry 的总损伤 (11.9 ± 0.7) 分别超过 Sp 和 Oy 的 2.8 倍和 2.5 倍。此外，Ry 的平均储存前 bruchid 感染（1.4 Log counts/kg）分别超过 Sp 和 Oy 感染 1.5 和 15 倍。在储存中，质量也取决于品种。在PP袋中，除MDD和虫害外，其他所有属性的品种差异都很明显，品种和位置之间的交互作用对毛刺计数和毛刺伤害显着。与 Oy 相比，Variety Ry 在所有位置遭受更多 bruchid 损伤，而 Sp 在较冷/潮湿的农业位置受到更多攻击，而 Oy 在较温暖/干燥的位置受到更多攻击。使用 PICS 袋时，品种在整体失重方面存在差异（Ry：8.5 ± 4.1%，Sp：2.3 ± 0.4%，Oy：2.9 ± 2.7%）。结果表明，气密储物袋不适用于某些豆类品种。此外，需要强调小心的存储前处理、质量改进的分类以及在装袋前对咖啡豆进行消毒的措施。在这方面，较冷/潮湿的农业地点需要密切关注。