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首页> 外文期刊>Indian Journal of Weed Science >Influence of weed and fertilizer managment on yield and nutrientuptake in mustard
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Influence of weed and fertilizer managment on yield and nutrientuptake in mustard

机译：杂草和化肥管理对芥菜产量和养分吸收的影响

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摘要

Field investigation were carried out during winter season of 2011-12 and 2012-13 at Kalimpong (1250 m asl), to evaluate the effect of different fertilizer levels and weed management practices on density and dry matter of weeds and crop-weed completionfor nutrient in Indian mustard (Brassica juncea (L.) Czern and Coss.). Amongst various fertility levels minimum weed density and dry matter production was recorded with the application of 150% RDF, which was found to be significantly superior to all other main plot treatments. Amongst various chemical treatments, the minimum weed density and weed dry matter production was observed with pendimethalin (0.75 kg/ha) + hand weeding (HW) at 35 DAS, and was at par with the hand weeding twice during both the years, and in second year this was statistically similar with pendimethalin (1.25 kg/ha) and alachlor (1.25 kg/ha). More seed yield was recorded with 150% RDF (2.19 t/ha) in first year and in second year more yield was associated with the 125% RDF (2.07 t/ha). Amongst various herbicidal treatments, during the first year maximum seed yield was registered with pendimethalin (1.25 kg/ha), and was at par with all the treatments except weedy check, fluchloralin (0.75 kg/ha) and pendimethalin (0.75 kg/ha), andin second year highest seed yield was recorded with the hand weeding twice, and was statistically at par with the pendimethalin (1.25 kg/ha), pendimethalin (0.75 kg/ ha) + HW at 35 DAS and alachlor (1.25 kg/ha). Amongst various main plot treatments, least nutrient uptake by weed was recorded with the application of 150% RDF. Least nutrient depletion by weed was registered with the hand weeding twice during both the year of data recording, and was at par with the pendimethalin (0.75 kg/ha) + HW at 35 DAS. Economics revealed that application of 150% RDF gave maximum net return ( 19,380). However highest benefit: cost ratio (2.03) was registered with the application of 125% RDF. With sub-plot treatment highest net return 19,950) was observed with the hand weeding twice (19,950/ha), and was followed by application of pendimethalin (0.75 kg/ha) + HW at 35 DAS ( 19,850/ha). Maximum benefit: cost ratio (2.06) was recorded with the application of pendimethalin (1.25 kg/ha) and was closely followed by pendimethalin (0.75 kg/ha) + HW at 35 DAS (1.91).
机译：在2011-12年和2012-13冬季在Kal伦堡（1250 m asl）进行了田野调查，以评估不同肥料水平和杂草处理措施对杂草密度和干物质以及作物杂草养分完成的影响。印度芥末（Brassica juncea（L.）Czern and Coss。）。在不同的肥力水平下，使用150％RDF记录了最低杂草密度和干物质生产，发现其显着优于所有其他主要地块处理。在各种化学处理方法中，在35 DAS下使用二甲戊乐灵（0.75 kg / ha）+手工除草（HW）观察到最小杂草密度和杂草干物质产量，并且在这两年和第二年中均达到了手工除草的两倍。第二年，二甲戊灵（1.25公斤/公顷）和甲草胺（1.25公斤/公顷）在统计学上相似。第一年使用150％RDF（2.19 t / ha）记录了更高的种子产量，第二年使用125％RDF（2.07 t / ha）则获得了更高的产量。在各种除草处理方法中，在第一年中，二甲戊乐灵（1.25 kg / ha）记录了最高种子产量，与除杂草检查，氟氯林灵（0.75 kg / ha）和二甲戊灵（0.75 kg / ha）以外的所有处理方法均达到同等水平，并在第二年中以两次除草记录了最高的种子产量，并且在统计学上与在35 DAS时的二甲戊灵（1.25 kg / ha），二甲戊灵（0.75 kg / ha）+ HW和甲草胺（1.25 kg / ha）相当。 。在各种主要地块处理中，使用150％RDF记录的杂草养分吸收最少。在数据记录的两个年度中，通过手工除草两次记录了通过杂草消耗的最少营养素，并且在35 DAS时与戊二甲灵（0.75 kg / ha）+硬件相当。经济学表明，使用150％RDF可获得最大的净回报（19,380）。但是，最高的好处是：应用了125％的RDF时，成本比率（2.03）被记录下来。在分地块处理中，两次人工除草（19,950 / ha）观察到最高净回报（19,950），然后在35 DAS下施用戊二甲灵（0.75 kg / ha）+ HW（19,850 / ha）。最大收益：应用二甲戊乐灵（1.25 kg / ha）记录成本比（2.06），紧随其后的是35 DAS（1.91）下的二甲戊灵（0.75 kg / ha）+硬件。

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