Absorption et assimilation du nitrate et recyclage de l’azote organique chez les plantes : intérêt pour le colza

Morot‐Gaudry, Jean‐François; Orsel, Mathilde; Diaz, Céline; Daniel-Vedele, François; Masclaux-Daubresse, Céline

doi:10.1051/ocl.2006.0091

Cited by 4 publications

(3 citation statements)

References 26 publications

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“…Gaudry 1997, Tendonkeng et al, 2011, which would explain the decrease in size and diameter observed.Nitrogen fertilization positively influenced biomass production (t MS/ha) of the whole plant of P. plicatulum and its different parts. This observation is consistent with the results of many research studies(Lawlor et al., 2001; Obulbiga and Kaboré-Zoungrana, 2007; Pamo et al, 2008; Tendonkeng et al, 2011).…”

mentioning

confidence: 81%

“…Various studies have shown that mineral fertilization based on nitrogen fertilizers accelerates plant growth, spreads fodder production over time and leads to a significant increase in biomass (Pamo, 1991, Morot-Gaudry, 1997, Lawlor et al, 2001. If in Cameroon in the same altitude zone as the Central Plateau of Fouta djallon, works by Tendonkeng et al (2011) have shown that nitrogen fertilization can help to improve the biomass yield of Brachiaria ruziziensis, no research has yet been conducted in the Central Plateau of Fouta Djallon on the determination of the optimal level of fertilizer (NPK), and its effect on growth and biomass production of Paspalum plicatulum at different phenological stages.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Different Levels of Mineral Fertilization and Phenological Stage on Growth and Biomass Production of Paspalum plicatulum

C.,

et al. 2018

J Anim Husb Dairy Sci

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The direct effect of six levels of mineral fertilization with on the growth and biomass production of Paspalum plicatulum was evaluated at different phenological stages at the Bareng Agronomic Research Station at the Fouta Djallon Central Plateau (Middle Guinea). A factorial design comparing six doses of nitrogen fertilizer (0; 50; 100; 150; 200 and 250 kg N/ha) and three phenological stages (bolting, flowering and after seed set) on plots of 8 m² (4 x 2 m) in four replicates, for a total of 72 experimental plots was used. At each phenological stage, 64 plants were collected per treatment for measurements of heights and diameters. Stem, leaf and whole plant biomass assessment was done on each plot based on nitrogen fertilizer level and phenological stage. The results obtained showed that the mineral fertilization and the phenological stage influence in a positive way (P <0.05) the height and the diameter of P.plicatulum. Regardless of the phenological stage, the highest height and diameter were obtained with a dose of 200 kg N/ha. In addition, the biomass of stems and whole plants of P. plicatulum was increased (p <0.05) with the phenological stage regardless of the level of fertilization. The highest leaf biomass was obtained at bolting (4.12 t DM/ha). The results obtained show that under the agro-ecological conditions of the Central Plateau of Fouta djallon where the test was conducted, the direct effect of fertilization at a rate of 200 kg N/ha makes it possible to obtain the highest growth. P. plicatulum plants were elevated in height, diameter and biomass produced. Plants in the 150 and 200 kg N/ha fertilizer plots had the highest leaf-to-stem ratios (p˂0.05) at bolting. Regardless of the level of fertilization, the best leaf-to-stem ratios of P. plicatulum were obtained at bolting.

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mentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Effect of Different Levels of Mineral Fertilization and Phenological Stage on Growth and Biomass Production of Paspalum plicatulum

C.,

et al. 2018

J Anim Husb Dairy Sci

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“…Biological nitrogen-fixation (BNF) by legume and rhizobia symbiosis can increase cereal yields in rotation by 30%-350% (Peoples & Crasswell, 1992). The N supplied through BNF accelerates plant growth, spreads fodder production over time, and leads to a significant increase in biomass (Lawlor et al, 2001;Morot-Gaudry et al, 1997;Pamo, 1991). Cowpea (Vigna unguiculate (L) Walp) is an efficient legume crop in BNF and can supply 125-210 kg of N ha −1 for cereal crops in rotation (Devi et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Cowpea residue management effect on productivity of subsequent millet in a legume‐cereal crop rotation

Tine,

Faye,

Obour

et al. 2023

Agrosystems Geosci & Env

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Growing cowpea (Vigna unguiculate (L) Walp) in rotation with millet (Pennisetum glaucum (L.) R. Br.) can increase millet productivity through biological nitrogen fixation. However, in Senegal, legume crop residues are generally removed for livestock feed, and little information exists on how burying the residue instead of removal affects the subsequent crop yield. This study assessed the productivity of cowpea varieties and evaluated prior cowpea residue management effect on grain and biomass yield of millet (Pennisetum glaucum (L.) R. Br) in rotation. Experiments were conducted in the National Center for Agronomic Research (CNRA) of Bambey in Senegal from 2020 to 2022. Treatments include 20 cowpea varieties, two fertilizer rates, and cowpea residue management practices (residue removal vs. burying) in a split‐split plot arrangement. Results showed that fertilizer and variety had significant effect on grain and fodder yields of cowpea. Cowpea fodder nutrient concentrations differed by variety, and the superior cowpea variety, 66‐35F, in nutrient concentration in this study had a 2.8‐0.45‐0.82% N‐P‐K. Applying fertilizer to previous cowpea crop increased millet grain yield by 63% compared to millet yield following previous non‐fertilized cowpea plots. Furthermore, incorporation of cowpea residue prior to millet planting increased millet yield by 40% compared with the removal of cowpea biomass in 2020 but had no significant effect in 2021. In general, the amount of cowpea biomass buried had significant positive relationship with millet grain yield. Across years, millet grain yield increased by 0.16 kg ha−1 for each kilogram per hectare increase in cowpea biomass buried prior to millet planting. Results showed that a minimum of 1500 kg ha−1 cowpea buried biomass was required to increase the probability of millet grain yield above 1000 kg ha−1. We concluded that the previous year's cowpea residue burial and fertilizer management improved productivity of the rotational millet crop.

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Soil Compaction Affects Root Growth and Gene Expression of Major N-Assimilating Enzymes in Wheat

Mondal

Christopher

Chakraborty

et al. 2022

J Soil Sci Plant Nutr

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Absorption et assimilation du nitrate et recyclage de l’azote organique chez les plantes : intérêt pour le colza

Cited by 4 publications

References 26 publications

Effect of Different Levels of Mineral Fertilization and Phenological Stage on Growth and Biomass Production of Paspalum plicatulum

Effect of Different Levels of Mineral Fertilization and Phenological Stage on Growth and Biomass Production of Paspalum plicatulum

Cowpea residue management effect on productivity of subsequent millet in a legume‐cereal crop rotation

Soil Compaction Affects Root Growth and Gene Expression of Major N-Assimilating Enzymes in Wheat

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