Influence of phosphatic fertilizer on growth, yield and bacterial abundance in rice (Oryza sativa L.) genotypes

A pot experiment was conducted to evaluate the effect of lead (50, 100, 150 and 200 mg kg-1) on rice (Oryza sativa) and remediation of metal contamination by applying cow dung, poultry litter and lime to alleviate lead toxicity. The lengths, fresh and dry weights of shoot, root and macronutrients decreased with increasing level of lead compared to the control. The maximum reduction was observed in the pots treated with 200 mg kg-1 lead (19.50 and 20.03% for grain, 17.15 and 19.75% for shoot and 17.96 and 30.02% for root on the fresh and dry weight, respectively). The highest reduction in macronutrient content was observed in 200 mg kg-1 lead treated pot where N, P, K, Ca and Mg concentrations were reduced by 31.14, 47.44, 22.49, 21.84 and 31.58% for shoot and 28.95, 55.64, 37.5, 49.33 and 23% for root, respectively. On the other hand lead concentration in roots and shoots were increased with increasing lead treatment compared to the control. Treatments of the amendments (cow dung, poultry litter and lime) had positive effects though cow dung outshining the rest of them. This particular organic matter had considerable decreasing impacts in lead uptake by rice. Cow dung treated pots increased fresh and dry weight by 31.48 and 32.07% for grain, 14.08 and 35.30% for shoot and 57.09 and 34.48% for root compared to pot treated with 100 mg kg-1 lead. Cow dung remediated lead concentration by 48.85, 65.00 and 62.00% for grain, shoot and root, respectively. J. Biodivers. Conserv. Bioresour. Manag. 2019, 5(2): 83-92

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Effect of Biochar Application in Soil Amended with Sewage Sludge on Growth, Yield and Uptake of Primary Nutrients in Rice (Oryza sativa L.)

Journal of the Indian Society of Soil Science ◽

10.5958/0974-0228.2019.00013.6 ◽

2019 ◽

Vol 67 (1) ◽

pp. 115 ◽

Cited By ~ 1

Author(s):

H.S. Jatav ◽

S.K. Singh

Keyword(s):

Oryza Sativa ◽

Sewage Sludge ◽

Oryza Sativa L ◽

Growth Yield

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Azospirillum amazonense inoculation: effects on growth, yield and N2 fixation of rice (Oryza sativa L.)

Plant and Soil ◽

10.1007/s11104-007-9476-1 ◽

2007 ◽

Vol 302 (1-2) ◽

pp. 249-261 ◽

Cited By ~ 103

Author(s):

Elisete Pains Rodrigues ◽

Luciana Santos Rodrigues ◽

André Luiz Martinez de Oliveira ◽

Vera Lucia Divan Baldani ◽

Kátia Regina dos Santos Teixeira ◽

...

Keyword(s):

Oryza Sativa ◽

N2 Fixation ◽

Oryza Sativa L ◽

Growth Yield ◽

Azospirillum Amazonense

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Effect of nitrogen scheduling in early and late planted medium duration rice (Oryza sativa L.)

ANNALS OF PLANT AND SOIL RESEARCH ◽

10.47815/apsr.2021.10070 ◽

2021 ◽

Vol 23 (3) ◽

pp. 279-285

Author(s):

Keyword(s):

Oryza Sativa ◽

Growth Parameters ◽

Oryza Sativa L ◽

Growth Yield ◽

Research Station ◽

Dry Matter Accumulation ◽

N Application ◽

Yield Attributes ◽

Late Planting ◽

Four Levels

A field experiment on rice (Oryza sativa L.) crop was conducted at Rice Research Station, Kaul (Kaithal), India during kharif season of 2017 and 2018 to evaluate the optimum schedule of nitrogen application in the rice grown under early and late planting conditions. The treatments consisted of three timings of transplanting (3rd week of June, 1st week of July and 3 rd week of July), four levels of N (90, 120, 150 and 180 kg Nha-1) and four timings of N fertilizer application (½ at transplanting + ½ at 21 DAT, ½ at 21 DAT + ½ at 42 DAT, 1/3 at transplanting + 1/3 at 21 DAT + 1/3 at 42 DAT and LCC based N supply) and were laid out in split-plot design with transplanting time and N levels in main plots and N application time in sub-plots. The growth parameters (plant height, number of tillers/m2 and dry matter accumulation/m2), yield attributing characters (number of panicles/m2 and grains/panicle) and yield (grain and straw yield) of rice crop reduced significantly under late planting (3rd week of July) as compared to that under the two earlier plantings (3rd week of June and 1stweek of July) whereas the two earlier plantings were at par in respect of these parameters. The growth, yield attributes and the yield increased with every increase in N application rates but the increase was significant up to 150 kg Nha-1. The highest yield was (7.33 tha-1), however, obtained with the crop transplanted early (up to1st week of July) and supplied with 150 kg Nha-1.Application of N in three equal splits (at 0, 21 and 42 DAT or as per LCC schedule), being at par, resulted into higher yield (grain and straw) than the N application in two equal splits. The net returns and B: C ratio increased appreciably with increase in N application levels upto 150 kg Nha-1 obviously due to increase in crop yield.

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