Effects of Tillage System and Weed Control Method on Weed Infestation and Yield of Lowland Rice (Oryza sativa L.)

Eli Kuchi Jiya, E. Daniya, Musa Gimba Matthew Kolo
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引用次数: 2

Abstract

ABSTRACT A two–year experiment was carried out to determine the effects of tillage (heap and level, hoe plough and herbicide-based zero tillage) and weed control methods (no weeding, hoe weeding at 25 days after transplanting (DAT), hoe weeding at 25 and 45 DAT, application of post-emergence herbicide propanil plus 2,4-D (Orizo Plus, Proficol Calle, Baranquilla, Colombia) at 25 DAT followed by hoe weeding at 45 DAT, and Orizo Plus® at 25 and 45 DAT) on weed infestation and performance of lowland rice in Badeggi, Nigeria. Reduced weed density and biomass, taller rice plants, and higher panicle and paddy yield were recorded in most heap and level treatments. Two hoe weedings only and Orizo Plus® at 25 DAT followed by one hoe weeding resulted in significantly lower weed density and biomass, more panicles and significantly higher paddy yield. Hoe plough in combination with two hoe weedings had the lowest weed density. Zero tillage planting in combination with two hoe weedings produced weed biomass comparable to heap and level in combination with the application of Orizo Plus® at 25 DAT followed by one hoe weeding. These results suggest that hoe plough followed by hoe weeding at 25 and 45 DAT, or heap and level tillage followed by application of Orizo Plus® at 25 DAT and hoe weeding at 45 DAT effectively controlled weeds and increased plant height, panicle number and paddy yield of transplanted rice.
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耕作制度与防杂草方式对水稻杂草侵害及产量的影响
文摘进行了为期两年的实验来确定耕作的影响(堆和水平,锄犁和herbicide-based免耕)和杂草控制方法(没有除草,锄除草在移植后25天(DAT),在25 - 45 DAT锄除草,萌发后应用除草剂敌稗+ 2,4 - d (Orizo + Proficol Calle, Baranquilla,哥伦比亚)在25 DAT锄除草45 DAT紧随其后,和Orizo Plus®(25和45 DAT)对尼日利亚Badeggi低地水稻杂草侵染和生产性能的影响。在大多数堆置和水平处理中,杂草密度和生物量降低,水稻株高,穗数和水稻产量增加。2次锄草和Orizo Plus®在25 DAT后进行1次锄草显著降低了杂草密度和生物量,增加了穗数,显著提高了水稻产量。锄犁加两锄除草的杂草密度最低。零耕作种植结合两次锄草产生的杂草生物量可与堆积和水平相媲美,结合使用Orizo Plus®在25 DAT,然后进行一次锄草。结果表明,25、45日锄犁后锄除草,或25日堆平耕后施用Orizo Plus®,45日锄除草能有效控制移栽水稻的杂草,提高移栽水稻的株高、穗数和产量。
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