Effect of Weed Management Practices and Fertilizer Levels on Crop Nutrient Uptake and Weed Nutrient Removal in the Hybrid Rice
International Journal of Plant & Soil Science,
Aim: Comparative evaluation of weed management practices and fertilizer levels on crop nutrient uptake and weed nutrient removal in the hybrid rice.
Study Design: The experiment was laid out in split-plot design with weed management in main-plot and fertilizer levels in sub-plot and was replicated thrice.
Place and Duration of Study: Experiment was performed during the kharif period of 2017 at the Research Farm, TCA, Dholi, Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur (BIHAR).
Methodology: The experiment was performed with twelve treatments in a split plot design. The main plot comprised four different weed management practices and under the sub-plot there were three fertilizer levels. Rice hybrid “ARIZE-6444” was taken as the test variety. Observations of the crop and weeds during the experimental duration were recorded at regular intervals, to assess the probable relationship between growth attributes and the final yield. The significance of the treatment impact was examined by the F test.
Results: Among weed management practices, maximum uptake by rice with respect to nitrogen (152.85 Kg/ha), phosphorous (45.79 Kg/ha) and potassium (187.13 Kg/ha) and minimum removal by weed regarding nitrogen (1.30 Kg/ha), phosphorous (0.54 Kg/ha) and potassium (1.85 Kg/ha) was recorded in treatment hand weeding twice which was observed statistically at par with Bispyribac-sodium @ 25 g/ha + Pyrazosulfuron @ 25 g/ha at 25 DAT.
Among fertilizer levels, application of 150 per cent RDF registered the highest portion of nitrogen (130.52 Kg/ha), phosphorous (40.40 Kg/ha) and potassium (164.49 Kg/ha) uptake by rice crop and nutrient removal through weeds is nitrogen (10.65 Kg/ha), phosphorous (4.84 Kg/ha) and potassium (15.59 Kg/ha) of, and respectively.
Conclusion: Among different weed management practices combined application of Bispyribac-sodium @ 25 g/ha + Pyrazosulfuron @ 25 g/ha at @) DAT or hand weeding twice (20 and 40 DAT) was found effective in controlling weeds and increase in the quality and quantity of rice. Among fertilizer levels application of 125% RDF was found effective in increase in the yield, nutrient content of the crop and substantially reduction of nutrients removed by weed in rice field.
- Crop nutrient uptake
- herbicide combination
- weed nutrient removal
- fertilizer levels
How to Cite
Singh RB, Virimani SS. Recent progress in the technology and development of hybrid rice in Asia. International rice commission Newsletter. 1990;39:133-145.
Cochran WC, Cox GM. Experimental designs. Asia Publishing house: Bombay; 1952.
Shekhar J, Mankotia BS, Bindra AD. Bio-efficacy of some new herbicides again weeds in transplanted rice. Indian Journal of Weed Science. 2004;36:50-53.
Singh AK, Chandra U, Singh R. Growth and yield response of hybrid rice to planting methods and fertilizer levels. Annals of Plant Physiology. 2009;23(2):155-15.
Thomas UC, Varughese K, Thomas A. Influence of irrigation, nutrient management and seed priming on yield and yield attributes of upland rice. International Rice Research Notes. 2003;28(2):39-40.
Ramachandrian K, Balasubramanian R. Effect of weed management on growth, yield attributes and yield of aerobic rice. Madras Agriculture Journal. 2012;99(1-3):96-98.
Raj R, Kumar A, Kumar V, Singh CB, Pandey UC. Herbicide options for controlling weeds in transplanted rice (Oryza sativa L.) under North Eastern Zone. Indian Journal of Agronomy. 2016;61(2):197-203.
Moorthy BTS. Evaluation of pyrazosulfuron ethyl alone and in combination with molinate for controlling weeds in rainfed direct-seeded lowland rice. Indian Journal of Weed Science. 2002;34(3&4):285-286.
Payman G, Singh S. Effect of seed rate, spacing and herbicide use on weed management in direct seeded upland rice (Oryza sativa L.). Indian Journal of Weed Science. 2008;40(1 & 2):11-15.
Abstract View: 89 times
PDF Download: 49 times