EVALUATION OF INTEGRATED STRIGA HERMONTHICA CONTROL TECHNOLOGIES UNDER FARMER MANAGEMENT
EVALUATION OF INTEGRATED STRIGA HERMONTHICA CONTROL TECHNOLOGIES UNDER FARMER MANAGEMENT
复制标题
农户管理下黑鳢综合防治技术的评价
DOI：
10.1017/s0014479702001084
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发表时间：
2003
影响因子：
1.6
通讯作者：
F. Ikie
中科院分区：
文献类型：
--
作者：
S. Schulz;M. A. Hussaini;J. Kling;D. Berner;F. Ikie
农场试验在尼日利亚北部几内亚大草原进行。目的是将综合独脚金控制措施（第一年种植大豆或豇豆诱集作物，第二年种植对独脚金具有抗性的玉米）与农民管理条件下的传统做法（以谷物为主的种植系统）进行比较。事实证明，综合控制对于减少独脚金发病率非常有效，无论是在降低土壤种子密度还是减少玉米感染方面。大豆诱捕作物后种植的抗性玉米产量为 1.58 t ha−1，比传统做法种植的当地玉米产量高出 80% 以上。同样，使用大豆的综合对照处理在实验期间的总体生产率最高。相反，豇豆诱捕作物后的抗性玉米产量仅为 0.92 t ha−1（可能是由于第一年豇豆作物表现不佳），玉米产量与农民实践中获得的产量相似。土壤中独脚金种子的初始密度与土壤氮呈负相关（r = -0.33），但氮肥施用量似乎并不影响玉米中独脚金的感染水平。
On-farm trials were conducted in the northern Guinea savanna of Nigeria. The objective was to compare integrated Striga hermonthica control measures (soyabean or cowpea trap crop in the first year followed by maize resistant to Striga in the second year) with farmers' traditional practices (cereal-based cropping systems) under farmer-managed conditions. Integrated control proved to be highly effective in terms of reducing Striga incidence both in terms of reduced seed density in the soil and decreased infection in maize. Resistant maize following the soyabean trap crop yielded 1.58 t ha−1 of grain and out-yielded local maize following traditional practices by more than 80%. Similarly, the overall productivity over the period of the experiment was highest with the integrated control treatment using soyabean. Conversely, resistant maize after the cowpea trap crop yielded only 0.92 t ha−1 (possibly due to the poor performance of the cowpea crop in the first year), and maize yields were similar to those obtained with farmer practices. Initial Striga seed density in the soil was negatively correlated (r = −0.33) with soil nitrogen, but nitrogen-fertilizer application rates did not seem to affect the level of Striga infection in maize.