Effect of preceding and intercropping crops on suppression of lentil damping-off and root rot disease in New Valley - Egypt
Effect of preceding and intercropping crops on suppression of lentil damping-off and root rot disease in New Valley - Egypt
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DOI：
10.1016/j.cropro.2011.10.011
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发表时间：
2012-02-01
期刊：
影响因子：
2.8
通讯作者：
Abo-Elyousr, Kamal A. M.
中科院分区：
文献类型：
--
作者：
Abdel-Monaim, Montaser F.;Abo-Elyousr, Kamal A. M.
立枯丝核菌（Rhizoctonia solani）和立枯镰刀菌（Fusarium solani）分离自病扁豆根，所述病扁豆根显示从新谷省的不同位置收集的立枯病和根腐病。R. Solani分离物R-1和F.茄病分离物FS-9是致病力最强的菌株。在温室和大田条件下，研究了几种农业因子对水稻立枯病和根腐病严重程度的影响。间作孜然、八角、洋葱和大蒜显著降低立枯病和根腐病，提高种子产量。大茴香的影响最大，间作洋葱的影响最小。在小扁豆之前种植的所有测试的前作物降低了疾病严重程度和测试真菌的种群，除了在大豆和花生的情况下，其增加了疾病严重程度的百分比以及土壤中测试真菌的种群。在种植小扁豆之前种植的豇豆和野牛在疾病严重程度上下降最多。另一方面，在豇豆之后种植的小扁豆产生了最高的种子产量，其次是高尔和小米。最低的种子产量生产记录时，植物种植后，大豆，芝麻和花生。最低种群为R.当豇豆种植在小扁豆之前时，记录了solani，而在小扁豆之前种植高粱导致F.索拉尼除花生和大豆外，间作和前茬作物根系分泌物均降低供试真菌的菌丝干重。皇冠版权所有（C）2011由爱思唯尔有限公司出版。保留所有权利。
Rhizoctonia solani and Fusarium solani were isolated from diseased lentil roots showing damping-off and root rot collected from different locations of New Valley governorate. R. solani isolate R-1 and F. solani isolate FS-9 were the highest virulent isolates. The influence of some agricultural factors on severity of damping-off and root rot disease was studied under greenhouse and field conditions. Intercropping cumin, anise, onion and garlic significantly decreased damping-off and root rot disease and increased seed yield. Anise has the greater effect than other crops, while intercropping onion showed the lowest effect. All tested preceding crops planted before lentil decreased disease severity and population of the tested fungi except in case of soybean and groundnut which increased percentage of disease severity as well as populations of the tested fungi in soil. Cowpea and gaur cultivated before lentil gave the highest decrease in disease severity. On the other hand, lentil cultivated after cowpea produced the highest seed yield followed by gaur and millet. Lowest seed yield production was recorded when plants were cultivated after soybean followed by sesame and groundnut. The lowest population of R. solani was recorded when cowpea cultivated before lentil, while, cultivating sorghum before lentil resulted in the lowest population of F. solani. Root exudates of intercropping and preceding crops reduced mycelial dry weight of the tested fungi in vitro except groundnut and soybean. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.