Effect of Nitrogen Application on Biomass Production, Yield and Nitrogen Fixation of Legumes and Maize Crops

Chaudhry, Muhammad Anwar; Yasmin, K.; Lone, Mohammad Iqbal; Khan, Khalid Saifullah

doi:10.3923/pjbs.1999.743.745

Pakistan J. of Biological Sciences

1999

DOI: 10.3923/pjbs.1999.743.745

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Effect of Nitrogen Application on Biomass Production, Yield and Nitrogen Fixation of Legumes and Maize Crops

Muhammad Anwar Chaudhry¹,

K. Yasmin²,

Mohammad Iqbal Lone³

et al.

Abstract: The effect of nitrogen application on biomass production and yield of legumes and maize under rainfed field conditions was studied to estimate the amount of nitrogen fixed by various leguminous crops under fertilized and non-fertilized conditions and to compare the yield, income and net return of legumes and non-legumes. Yield and biomass of summer legumes were not affected significantly with N application but in case of maize there was an increase of 69 and 74 percent in dry matter and grain yield, respective… Show more

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Nutrient‐enriched soils and native N‐fixing plants in New Zealand

Dollery

Dickinson

2018

J. Plant Nutr. Soil Sci.

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Approximately 40% of New Zealand's land mass is fertilized grassland with entirely non‐native plants, but currently there is substantially increased interest in restoration of native plants into contemporary agricultural matrices. Native vegetation is adapted to more acid and less fertile soils and their establishment and growth may be constrained by nutrient spillover from agricultural land. We investigated plant–soil interactions of native N‐fixing and early successional non N‐fixing plants in soils with variable fertility. The effects of soil amendments of urea (100 and 300 kg N ha−1), lime (6000 kg CaCO3 ha−1), and superphosphate (470 kg ha−1) and combinations of these treatments were evaluated in a glasshouse pot trial. Plant growth, soil pH, soil mineral N, Olsen P and nodule nitrogenase activity in N‐fixing plants were measured. Urea amendments to soil were not inhibitory to the growth of native N‐fixing plants at lower N application rates; two species responded positively to combinations of N, P and lime. Phosphate enrichment enhanced nodulation in N‐fixers, but nitrogen inhibited nodulation, reduced soil pH and provided higher nitrate concentrations in soil. The contribution of mineral N to soil from the 1‐year old N‐fixing plants was small, in amounts extrapolated to be 10–14 kg ha−1 y−1. Urea, applied both alone and in conjunction with other amendments, enhanced the growth of the non N‐fixing species, which exploited mineral N more efficiently; without N, application of lime and P had little effect or was detrimental. The results showed native N‐fixing plants can be embedded in agroecology systems without significant risk of further increasing soil fertility or enhancing nitrate leaching.

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Nutrient‐enriched soils and native N‐fixing plants in New Zealand

Dollery

Dickinson

2018

J. Plant Nutr. Soil Sci.

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Effect of Nitrogen Application on Nodulation in Inoculated Chickpea (Cicer arietinum L.)

David¹,

Khan²

2001

J. of Biological Sciences

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A greenhouse experiment was conducted to study the effect of nitrogen application on the growth and nodulation in chickpea (Cicer arietinum L.). Inoculated chickpea variety Punjab-91 was applied with different doses of nitrogen i.e. 0 (control), 50, 100 and 150 kg N/ha in the form of urea. Data regarding the plant height, oven dry root and shoot weights, and number of nodules per plants were recorded every 15 days after the germination (DAG) of seeds up to a period of 60 days. Results showed a marked increase in plant height and oven dry root and shoot weights of chickpea plants due to nitrogen application. Addition of nitrogen at 100 kg/ha caused maximum increase followed by 150 and 50 kg N/ha, respectively. However, this marked increase in plant growth was only evident at the early growth stage i. e. up to 45 DAG, and at the later growth stages, the differences became less evident. A marked decline in nodulation in chickpea was observed at all the levels of nitrogen application.

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Effect of Nitrogen Application on Biomass Production, Yield and Nitrogen Fixation of Legumes and Maize Crops

Cited by 2 publications

References 2 publications

Nutrient‐enriched soils and native N‐fixing plants in New Zealand

Nutrient‐enriched soils and native N‐fixing plants in New Zealand

Effect of Nitrogen Application on Nodulation in Inoculated Chickpea (Cicer arietinum L.)

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