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Storage of open-pollinated maize variety seeds in active cattle kraal to suppress maize weevils and improve seed quality and seedling vigour

机译:将开放授粉的玉米变种种子储存在活性牛的牛栏中,以抑制玉米象鼻虫,提高种子质量和幼苗活力

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Open-pollinated maize (Zea mays) varieties remain popular in marginal communities since seeds can be selected and stored for the next season. However, maize weevil (Sitophilus zeamais)is an economic post-harvest pest of maize grains, which is difficult to manage. Various indigenous seed storage technologies had been in use within marginal communities, with little empirically-based support of their efficacy on weevils. The influence of storing maize seeds in active cattle kraal (ACK) for suppression of weevils and therefore protection of seeds was studied at three locations over two seasons. Water-tight plastic containers, each with 500 maize seeds infested with 20 maize weevils, with 10 replications, were stored in 30-cm-deep holes in ACK, with controls stored at farmer level. At 120 days after storage, relative to farmer controls, ACK reduced finalS. zeamaisnumbers (73 to 95%) and damage of various seed sets (27 to 97%), but improved seed quality (101 to 3500%), seedling emergence (27 to 64%) and root/shoot ratio (19 to 50%). In conclusion, results of the study suggested that ACK storage has the potential for storing open-pollinated maize seeds throughout winter for farmers in marginal communities to allow for quality seeds that produce vigorous seedlings in the next growing season.
机译:由于可以选择种子并保存到下一个季节,因此开放授粉的玉米(Zea mays)品种在边缘社区仍然很受欢迎。但是,玉米象鼻虫(Sitophilus zeamais)是玉米籽粒的一种经济收获后害虫,难以控制。边际社区已使用了各种土著种子储存技术,几乎没有基于经验的证据支持其对象鼻虫的功效。在两个季节的三个地点研究了将玉米种子储存在活跃的牛栏(ACK)中以抑制象鼻虫并因此保护种子的影响。将不透水的塑料容器(每个容器装有500粒玉米种子,并用20个玉米象鼻虫感染,重复10次)存放在ACK的30厘米深的孔中,将对照保存在农民一级。相对于农民的控制,在存储120天后,ACK降低了finalS。玉米数量(73%至95%)和各种种子结实的损害(27%至97%),但提高了种子质量(101%至3500%),幼苗出苗(27%至64%)和根/茎比率(19%至50%) 。总之,研究结果表明,ACK贮藏技术有潜力在整个冬季为边缘社区的农民贮藏开放授粉的玉米种子,以允许优质种子在下一个生长季节产生旺盛的幼苗。

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