Weeds are a major threat in unpuddled transplanted rice during rainy seasons. To manage weeds by using Sesbania residue green mulch, rice straw mulch and post emergence herbicides in an integrated way, an experiment was conducted in a split plot at Varanasi during the rainy season of 2017 and 2018. The experiment was taken with three mulching treatments in main plots, namely, no mulching (NM), cover crop of Sesbania aculeatea followed by its green residue mulch (SRGM) and rice straw mulch (RRM) in inter rows and five weed management treatments, namely, weedy, hand weeding twice (HWT), post emergence application of bispyribac 25 g a.i ha⁻¹ (BP), penoxsulam 30 g a.i ha⁻¹ (PX), bispyribac 25 g a.i ha⁻¹ + pyrazosulfuron 20 g a.i ha⁻¹ (BP + PS) in subplots replicated thrice. SRGM and RRM were noted to be successful in reducing density and biomass of grasses including Echinochloa colona and sedges and total weed (59% and 49%) biomass compared to NM under weedy conditions. Mulching, integrated with post emergence herbicides proved its potency in not only weed reduction but is also in yield enhancement.

中文翻译：

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田菁、稻渣覆盖和出苗后除草剂对免耕移栽杂交水稻杂草生长和产量的研究

杂草是雨季未铲除的移栽水稻的主要威胁。为了综合利用田菁渣绿地膜、稻草覆盖物和苗后除草剂综合治理杂草，2017年和2018年雨季，在瓦拉纳西的裂区进行了试验。试验在2017年和2018年雨季进行了3次覆盖处理。主要地块，即不覆盖（NM），覆盖田菁作物，然后在行间覆盖绿渣覆盖物（SRGM）和稻草覆盖物（RRM），以及五种杂草管理处理，即除草、两次手工除草（HWT） )，子区出苗后施用双草醚 25 g ai ha ⁻¹ (BP)、五氟磺草胺 30 g ai ha ⁻¹ (PX)、双草醚 25 g ai ha ⁻¹  + 吡嘧磺隆 20 g ai ha ⁻¹ (BP + PS)重复三次。与杂草条件下的 NM 相比，SRGM 和 RRM 成功降低了草类（包括稗草和莎草）的密度和生物量以及杂草总生物量（59% 和 49%）。覆盖与出苗后除草剂相结合，证明其不仅能减少杂草，还能提高产量。