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首页> 外文期刊>Plant Disease >Effects of green manure type and amendment rate on Verticillium wilt severity and yield of russet burbank potato.
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Effects of green manure type and amendment rate on Verticillium wilt severity and yield of russet burbank potato.

机译：绿肥类型和改良率对黄萎病赤褐色马铃薯的黄萎病严重程度和产量的影响。

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摘要

Increasing restriction of agrochemicals is motivating development of ecology-based cropping systems, including green manures, to manage soilborne diseases. Green manures have shown promise in suppressing Verticillium dahliae, but information about effect of different green manures and optimal application rates remains limited. Therefore, we conducted two single-year field experiments comparing effects of Austrian winter pea (Pisum sativum 'Melrose'), broccoli (Brassica oleracea var. botrytis 'Excelsior'), and Sudan grass (Sorghum vulgare var. sudanense 'Monarch'), amended at 6, 12, or 24 Mg ha-1, on soil populations and root infection by V. dahliae, wilt severity, and yield of Russet Burbank potato. Inoculum density was reduced relative to the nonamended, infested control by all broccoli treatments, Austrian winter pea applied at 12 and 24 Mg ha-1, and Sudan grass applied at 12 Mg ha-1. Root infection was not reduced by any green manure treatment. Median wilt severity was reduced approximately 70% by all green manures applied at 24 Mg ha-1 and 74% by Austrian winter pea applied at 12 Mg ha-1. Tuber yield was reduced approximately 20% in nonamended, V. dahliae-infested controls relative to the noninfested controls. No green manure treatment improved yield relative to the nonamended, infested control..
机译：越来越多的农用化学品限制正在推动基于生态的种植系统（包括绿肥）的发展，以管理土壤传播的疾病。绿肥在抑制黄萎病方面表现出了希望，但是有关不同绿肥效果和最佳施用量的信息仍然有限。因此，我们进行了两个为期一年的田间试验，比较了奥地利冬豌豆（Pisum sativum'Melrose'），西兰花（Brassica oleracea var。botrytis'Excelsior'）和苏丹草（Sorghum vulgare var。sudanense'Monarch'）的效果，修改为6、12或24 Mg ha-1，以解决土壤种群和大麦弧菌感染根，枯萎严重性和Russet Burbank马铃薯的产量。相对于所有未经西兰花处理的花椰菜处理方法，接种冬虫夏草，奥地利冬豌豆分别以12和24 Mg ha-1施用，苏丹草以12 Mg ha-1施用，降低了接种密度。绿肥处理未减少根部感染。通过在24 Mg ha-1下施用所有绿肥，将中度青枯严重程度降低了约70％，而在12 Mg ha-1下施用了奥地利冬豌豆则降低了74％。相对于未侵染的对照，未修饰的，感染大丽花弧菌的对照的块茎产量降低了约20％。相对于未改良的侵染对照，没有绿肥处理可提高产量。

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