Nitrogen flows and balances as affected by water and nutrient management in a sorghum cropping system of semiarid Burkina Faso

Zougmoré, Robert B.; Mando, A.; Stroosnijder, L.; Guillobez, Serge

doi:10.1016/j.fcr.2004.03.006

Cited by 24 publications

(5 citation statements)

References 22 publications

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“…The trial has been described by a number of authors (Pieri, 1989;Sedogo, 1993;Bonzi, 2002;Hien, 2004;Lompo, 2009;Zida et al, 2011;Kiba, 2012 (Lesschen et al, 2007). The annual average rainfall is 800 mm, but highly variable both in quantity and distribution; the annual potential evaporation is 2000 mm; and the average annual temperature is close to 30 • C (Zougmoré et al, 2004).…”

Section: Description Of the Saria Field Experimentsmentioning

confidence: 99%

Soil properties and not inputs control carbon, nitrogen, phosphorus ratios in cropped soils in the long-term

Frossard¹,

Buchmann²,

Bünemann³

et al. 2015

Preprint

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Abstract. Stoichiometric approaches have been applied to understand the relationship between soil organic matter dynamics and biological nutrient transformations. However, very few studies explicitly considered the effects of agricultural management practices on soil C : N : P ratio. The aim of this study was to assess how different input types and rates would affect the C : N : P molar ratios of bulk soil, organic matter and microbial biomass in cropped soils in the long-term. Thus, we analysed the C, N and P inputs and budgets as well as soil properties in three long-term experiments established on different soil types: the Saria soil fertility trial (Burkina Faso), the Wagga Wagga rotation/stubble management/soil preparation trial (Australia), and the DOK cropping system trial (Switzerland). In each of these trials, there was a large range of C, N and P inputs which had a strong impact on element concentrations in soils. However, although C : N : P ratios of the inputs were highly variable, they had only weak effects on soil C : N : P ratios. At Saria, a positive correlation was found between the N : P ratio of inputs and microbial biomass, while no relation was observed between the nutrient ratios of inputs and soil organic matter. At Wagga Wagga, the C : P ratio of inputs was significantly correlated to total soil C : P, N : P and C : N ratios, but had no impact on the elemental composition of microbial biomass. In the DOK trial, a positive correlation was found between the C budget and the C to organic P ratio in soils, while the nutrient ratios of inputs were not related to those in the microbial biomass. We argue that these responses are due to differences in soil properties among sites. At Saria, the soil is dominated by quartz and some kaolinite, has a coarse texture, a fragile structure and a low nutrient content. Thus, microorganisms feed on inputs (plant residues, manure). In contrast, the soil at Wagga Wagga contains illite and haematite, is richer in clay and nutrients and has a stable structure. Thus, organic matter is protected from mineralization and can therefore accumulate, allowing microorganisms to feed on soil nutrients and to keep a constant C : N : P ratio. The DOK soil represents an intermediate situation, with high nutrient concentrations, but a rather fragile soil structure, where organic matter does not accumulate. We conclude that the study of C, N, and P ratios is important to understand the functioning of cropped soils in the long-term, but that it must be coupled with a precise assessment of element inputs and budgets in the system and a good understanding of the ability of soils to stabilize C, N and P compounds.

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Section: Description Of the Saria Field Experimentsmentioning

confidence: 99%

Soil properties and not inputs control carbon, nitrogen, phosphorus ratios in cropped soils in the long-term

Frossard¹,

Buchmann²,

Bünemann³

et al. 2015

Preprint

View full text Add to dashboard Cite

show abstract

“…The Harmattan wind blowing in November and December brings dust from the Sahara to Saria (Lesschen et al, 2007). The annual average rainfall is 800 mm, but highly variable both in quantity and distribution; the annual potential evaporation is 2000 mm; and the average annual temperature is close to 30 • C (Zougmoré et al, 2004). The field trial has been established on a gentle slope on a soil developed on granitic parent material from the Precambrian.…”

Section: Description Of the Saria Field Experimentsmentioning

confidence: 99%

Soil properties and not inputs control carbon : nitrogen : phosphorus ratios in cropped soils in the long term

Frossard

Buchmann

Bünemann

et al. 2016

SOIL

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Abstract. Stoichiometric approaches have been applied to understand the relationship between soil organic matter dynamics and biological nutrient transformations. However, very few studies have explicitly considered the effects of agricultural management practices on the soil C : N : P ratio. The aim of this study was to assess how different input types and rates would affect the C : N : P molar ratios of bulk soil, organic matter and microbial biomass in cropped soils in the long term. Thus, we analysed the C, N, and P inputs and budgets as well as soil properties in three long-term experiments established on different soil types: the Saria soil fertility trial (Burkina Faso), the Wagga Wagga rotation/stubble management/soil preparation trial (Australia), and the DOK (bio-Dynamic, bio-Organic, and “Konventionell”) cropping system trial (Switzerland). In each of these trials, there was a large range of C, N, and P inputs which had a strong impact on element concentrations in soils. However, although C : N : P ratios of the inputs were highly variable, they had only weak effects on soil C : N : P ratios. At Saria, a positive correlation was found between the N : P ratio of inputs and microbial biomass, while no relation was observed between the nutrient ratios of inputs and soil organic matter. At Wagga Wagga, the C : P ratio of inputs was significantly correlated to total soil C : P, N : P, and C : N ratios, but had no impact on the elemental composition of microbial biomass. In the DOK trial, a positive correlation was found between the C budget and the C to organic P ratio in soils, while the nutrient ratios of inputs were not related to those in the microbial biomass. We argue that these responses are due to differences in soil properties among sites. At Saria, the soil is dominated by quartz and some kaolinite, has a coarse texture, a fragile structure, and a low nutrient content. Thus, microorganisms feed on inputs (plant residues, manure). In contrast, the soil at Wagga Wagga contains illite and haematite, is richer in clay and nutrients, and has a stable structure. Thus, organic matter is protected from mineralization and can therefore accumulate, allowing microorganisms to feed on soil nutrients and to keep a constant C : N : P ratio. The DOK soil represents an intermediate situation, with high nutrient concentrations, but a rather fragile soil structure, where organic matter does not accumulate. We conclude that the study of C, N, and P ratios is important to understand the functioning of cropped soils in the long term, but that it must be coupled with a precise assessment of element inputs and budgets in the system and a good understanding of the ability of soils to stabilize C, N, and P compounds.

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“…Fatondji et al (2001) ont rapporté des rendements additionnels de 500 kg engendrés grâce à la technique du zaï combinant l'eau et les nutriments dans les poquets dans le Sahel et particulièrement sur des sols sablonneux. Zombré (2003) et Zougmoré et al (2004) ont également obtenu des accroissements de rendements du fait de l'utilisation du zaï. Les résultats de la présente investigation ont par ailleurs montré le rôle bénéfique du labour dans la production du grain du mil, en ce sens qu'il a permis des accroissements substantiels en rendements en grain de 266 à 635 kg ha -1 par rapport aux autres travaux du sol.…”

Section: Discussionunclassified

Effets du travail du sol et de la fertilisation organo-minérale sur les rendements du mil en zone soudano-sahélienne du Burkina Faso

Palé¹,

Barro²,

Koumbem³

et al. 2021

Int. J. Bio. Chem. Sci

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Le mil est la deuxième importante céréale cultivée au Burkina Faso après le sorgho. Ces dernières années, les rendements sont en baisse du fait de la pauvreté des sols et des aléas climatiques. Cette étude réalisée en 2018 et 2019 à la Station de Recherches de Saria avait pour objectif d’identifier des technologies de gestion de l’eau et de la fertilisation qui optimisent les rendements du mil. Le dispositif expérimental était un bloc complétement randomisé avec une disposition des traitements en split-plot et trois répétitions où les parcelles principales correspondaient à quatre niveaux de travail du sol et les parcelles secondaires à huit niveaux de fertilisation minérale avec ou sans compost. Les résultats ont montré que l’utilisation du compost plus les engrais minéraux ont permis des gains de 338 à 502 kg ha-1 pour le grain et de 657 à 947 kg ha-1 pour la paille. Le labour a engendré des gains de 266 à 635 kg ha-1 pour le grain et de 381 à 601 kg ha-1 pour la paille. Ces résultats permettent de recommander le labour avec une fertilisation organique et minérale pour optimiser les rendements du mil dans la zone soudano-sahélienne du Burkina Faso.Mots clés : Labour, zaï manuel, billonnage cloisonné, compost, Station de Recherches de Saria Effects of tillage and organo-mineral fertilization on yields of pearl millet in the Soudano-sahelian zone of Burkina FasoABSTRACTPearl millet is the second important cereal crop cultivated in Burkina Faso after sorghum [Sorghum bicolor (L.) Moench]. In recent years, farmers failed to achieve good yields because of low productivity resulting from soil poverty and climatic risks. This study was carried out at Saria Research Station in 2018 and 2019 and aimed at finding the best combination of water management techniques and fertilizers to optimize pearl millet yields. The experiment was conducted in randomized complete block design with split plot arrangements of treatments and three replications. The main plot was tillage method with four levels and the sub-plot was fertilization with eight levels consisting of mineral fertilizers with or without compost. Results showed that the addition of compost to mineral fertilizers resulted in yield increases from 338 to 502 kg ha-1 for grain and 657 to 947 kg ha-1 for stover. The use of plough increased grain yield from 266 to 635 kg ha-1 and stover from 381 to 601 kg ha-1. These results indicate that the use of compost plus mineral fertilizers and plough that optimize pearl millet yields can be recommended for pearl millet production in the Sudano-sahelian zone of Burkina Faso.© 2021 International Formulae Group. All rights reserved.Keywords: Plough, manual zaï, tied-ridging, compost, Saria Research Station.

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Nitrogen flows and balances as affected by water and nutrient management in a sorghum cropping system of semiarid Burkina Faso

Cited by 24 publications

References 22 publications

Soil properties and not inputs control carbon, nitrogen, phosphorus ratios in cropped soils in the long-term

Soil properties and not inputs control carbon, nitrogen, phosphorus ratios in cropped soils in the long-term

Soil properties and not inputs control carbon : nitrogen : phosphorus ratios in cropped soils in the long term

Effets du travail du sol et de la fertilisation organo-minérale sur les rendements du mil en zone soudano-sahélienne du Burkina Faso

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Nitrogen flows and balances as affected by water and nutrient management in a sorghum cropping system of semiarid Burkina Faso

Cited by 24 publications

References 22 publications

Soil properties and not inputs control carbon, nitrogen, phosphorus ratios in cropped soils in the long-term

Soil properties and not inputs control carbon, nitrogen, phosphorus ratios in cropped soils in the long-term

Soil properties and not inputs control carbon : nitrogen : phosphorus ratios in cropped soils in the long term

Effets du travail du sol et de la fertilisation organo-minérale sur les rendements du mil en zone soudano-sahélienne du Burkina Faso

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Soil properties and not inputs control carbon : nitrogen : phosphorus ratios in cropped soils in the long term