Balance sheet of soil nutrients as influenced by soil fertility levels in different varieties of aerobic rice (<i>Oryza sativa</i> L.)

Kumar, Sandeep; Kour, Sarabdeep; Gupta, M. B. Sen; Choudhary, Kartikeya

doi:10.5958/2455-7145.2018.00024.3

Cited by 2 publications

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“…Increasing cost of labour and restricted availability of irrigation water has led farmers to shift from traditional practice of conventionally transplanted to aerobic rice. Aerobic rice systems, where the crop is established through direct seeding under unpuddled, non-flooded conditions where plenty of air (oxygen) is present in the rhizosphere as compared to flooded rice which is the most promising approach for saving water and reduce water application by 44% relative to conventionally transplanted systems, by reducing percolation, seepages and evaporative losses, while maintaining yield at an acceptable level (Kumar et al, 2018). Among several factors for low rice productivity in aerobic conditions, the losses due to weeds are one of the most important factors resulting in 50 to 90% yield decrement (Chauhan and Opena, 2012).…”

Section: Introductionmentioning

confidence: 99%

Weed dynamics, weed control efficiency and yield of aerobic rice as influenced by different weed management practices in eastern U.P.

Parihar¹,

Srivastava²,

Kumar³

et al. 2020

JEB

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Aim: To identify the best sequence of pre- and post-emergence herbicides for achieving better weed control efficiency in aerobic rice. Methodology: A field experiment was conducted in Randomized Block Design with eleven treatment combinations, replicated thrice.? The dominant weeds in field were C. dactylon, E. colona and E. crusgalli among grasses, C. rotundus, C. difformis and F. maliaceae among sedges and C. axillaris and P. niruri among broad-leaf weeds. Treatments consisting sequential application of two pre-emergence application [Pendimethalin (30 EC) @ 1.00 kg a.i. ha-1; Butachlor (50 EC) @ 1.5 kg a.i. ha-1] followed by three post emergence herbicides [Bispyribac-Na (10% SC) @ 35 g a.i. ha-1; 2, 4-D Na salt (80 WP) @ 0.06 kg a.i. ha-1; Almix (CME + MSM ) (20 WP) @ 40 g a.i. ha-1] and straw mulching @ 4 t ha-1;? Mechanical weeding at 20 and 45 DAS, weed free and unweeded check.? Results: Among herbicidal treatments, pre-emergence application of pendimethalin at 3-4 DAS fb Bispyribac-Na at 15-20 DAS as post-emergence was most effective in minimizing weed density (4.81 m-2), biomass (6.20 g m-2), weed index (1.11%) and in enhancing the weed control efficiency (84.50%), grain yield (3.68 t ha-1) and straw yield (4.87 t ha-1) over rest of the treatments. Interpretation: Sequential application of pendimethalin at 3-4 DAS fb bispyribac-Na at 15-20 DAS is prominent in enhancing herbicide efficacy and reducing weed flora abundance resulting in higher weed control efficiency and grain yield due to their broad spectrum weed control.

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Section: Introductionmentioning

confidence: 99%

Weed dynamics, weed control efficiency and yield of aerobic rice as influenced by different weed management practices in eastern U.P.

Parihar¹,

Srivastava²,

Kumar³

et al. 2020

JEB

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Agronomic evaluation of rice (Oryza sativa) genotypes under varying fertility levels

BAHUGUNA,

SINGH,

SUPRIYA

et al. 2023

Indian J Agri Sci

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The study suggests that rice varieties IET-27263 and NDR-359 can achieve increased yields by employing 150% of the recommended fertilizer dose (180:90:60 kg NPK/ha). Using 150% of the suggested nitrogen dose (RDN) results in notably elevated gross and net returns, as well as an improved benefit-to-cost ratio (B: C). Particularly, genotype IET-27263 exhibits significantly superior gross return, net return, and B: C ratio compared to other genotypes.

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Balance sheet of soil nutrients as influenced by soil fertility levels in different varieties of aerobic rice (Oryza sativa L.)

Cited by 2 publications

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Weed dynamics, weed control efficiency and yield of aerobic rice as influenced by different weed management practices in eastern U.P.

Weed dynamics, weed control efficiency and yield of aerobic rice as influenced by different weed management practices in eastern U.P.

Agronomic evaluation of rice (Oryza sativa) genotypes under varying fertility levels

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