Biological Nitrogen Fixation by Legumes and N Uptake by Coffee Plants

Mendonça, Eduardo de Sá; Lima, Paulo César de; Guimarães, Gabriel Pinto; Moura, Waldênia de Melo; Andrade, Felipe Vaz

doi:10.1590/18069657rbcs20160178

Cited by 39 publications

(30 citation statements)

References 16 publications

(22 reference statements)

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“…Among the legumes, CROT accumulated the most N in the phytomass, followed by JB. The high capacity of N cycling by legumes via biological fixation is important information for determining management strategies for use of these plants as agricultural soil conditioners, which is discussed by Mendonça et al (2017).…”

Section: Dry Matter Production and Nutrient Accumulation In The Phytomentioning

confidence: 99%

“…Thus, the use of cover crops, also commonly called green manures (Correia and Durigan, 2008;Balota and Auler, 2011;Xavier et al, 2013), and nutrient recycling (Giacomini et al, 2003) should be considered as strategies to increase the productive capacity of soils, which would benefit crops of economic interest in the region. Among the most-used species of cover crops are legumes because of their ability to biologically fix N in association with diazotrophic bacteria (Mangaravite et al, 2014;Mendonça et al, 2017). Furthermore, some grasses and other non-leguminous plants have proven to be effective in keeping soil covered and recycling nutrients other than N (Gama- Rodrigues et al, 2007;Pacheco et al, 2011;Torres et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Decomposition and Nutrient Release Dynamics of Shoot Phytomass of Cover Crops in the Recôncavo Baiano

Xavier

Oliveira

Silva

2017

Rev. Bras. Ciênc. Solo

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ABSTRACT:Evaluating the decomposition dynamics of vegetative residues from cover crops can provide a better understanding of nutrient release, which is fundamental when choosing a species that is adapted to local conditions. The objective of this study was to evaluate the decomposition rates and nutrient release dynamics of the shoot phytomass of different cover crops that have potential for agricultural use in the Recôncavo Baiano, Brazil. Crop residues of the following species were analyzed: sunn hemp (Crotalaria juncea L.) -CROT; velvet bean (Mucuna aterrima L.) -MUC; lab lab (Dolichos lab lab L.) -LAB; jack bean (Canavalia ensiformis [L.] DC.) -JB; white lupin (Lupinus albus L.) -WLUP; and Guinea grass (Urochloa maxima (Jacq.) R. Webster) -GRAS. The experiment was conducted in a randomized block design with four replications. The decomposition and nutrient release dynamics were evaluated using litter bags, and the remaining dry matter and the nutrient content of litter from each cover crop were quantified. The accumulation of macronutrients in the phytomass was in the following order: N > K > Ca > Mg > P > S. The highest decomposition rates of the phytomass occurred in the species JB, with half-life (t 1/2 ) of 36 days, and GRAS, with t 1/2 of 41 days. K was the element with the shortest t 1/2 , suggesting a rapid transfer rate to the soil. Organic residues from the CROT and WLUP cover crops had lower decomposition rates and are, therefore, recommended for protecting soil in the region. Sunn hemp, unlike WLUP, also had residue of high chemical quality and, thus, it is an excellent nutrient recycler. Jack bean released nutrients into the soil the fastest due to its rapid decomposition rate; therefore, it is not recommended for ground cover.

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Section: Dry Matter Production and Nutrient Accumulation In The Phytomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Decomposition and Nutrient Release Dynamics of Shoot Phytomass of Cover Crops in the Recôncavo Baiano

Xavier

Oliveira

Silva

2017

Rev. Bras. Ciênc. Solo

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“…This significant N transfer within a short period is an indication of the importance of exudation of N compounds in meeting N needs of crops, especially during early growing stages [42]. (na) [63] Crotalaria-coffee 13.5 g kg −1…”

Section: Transfer Of Biologically Fixed Nitrogen In Agricultural Prodmentioning

confidence: 99%

“…(na) [63] Red clover-perennial ryegrass and forbs 25-58 kg ha −1 (9.5-15) [23] na, could not be estimated from data. § 4 m distance from caragana shelterbelt.…”

Section: Transfer Of Biologically Fixed Nitrogen In Agricultural Prodmentioning

confidence: 99%

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Nitrogen Fixation and Transfer in Agricultural Production Systems

Islam¹,

Adjesiwor²

2018

Nitrogen in Agriculture - Updates

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There is a consensus within the scientific community that nitrogenous fertilizers are almost indispensable in today's agriculture. However, the geometric increase in nitrogenous fertilizer applications and the associated environmental concerns call for focus on more sustainable alternatives. Biological dinitrogen (N 2 ) fixation (BNF) is one of the most sustainable approaches to meeting crop nitrogen (N) demands. The BNF is, especially, important in low value crops (e.g., forages) and in developing economies. However, just like synthetic N fertilizers, BNF has issues of its own. Among the issues of great importance is the low and highly variable proportion of fixed N 2 transferred to non-N 2 -fixing plants. The proportion of transfer ranges from as low as 0% to as high as 70%, depending on a myriad of factors. Most of the factors (e.g., N fertilizer application, species, and cultivar selection) are management related and can, therefore, be controlled for improved N 2 fixation and transfer. In this chapter, we discuss current trends in BNF in selected legume crops, the global economics of BNF, and recent reports on N 2 transfer in agricultural production systems. Additionally, factors affecting N 2 transfer and management considerations for improving N 2 fixation and transfer are discussed.

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Assessment of ecosystem services knowledge, attitudes, and practices of coffee farmers using legume cover crops

2022

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The objective of our study was to find out the level of adoption of desmodium legume fodder cover crops in coffee cultivation, which is associated with enhancing ecosystem services in coffee cultivation and providing fodder production for livestock. This was evaluated using a structured face to face questionnaire with a sample of 97 farmers on knowledge, attitude and practices, which was conducted in Gewa ward, Githuguri Constituency in Kiambu County by replicating similar conditions of Arabica coffee growing areas in the tropics, where most farmers practice mixed farming. A linear regression model was used to evaluate the relationship between commercial feeds and milk production. The results indicated a significant contribution of close to 70% implying that commercial feed contribution to milk production, which was estimated to be US$ 0.2 (KSh 19) per liter of milk produced, was indicative of the impact of the lack of adequate fodder.Despite the possibility of using the desmodium legume fodder production as a coffee cover crop, the attitude varied, and there is still a significant reliance on commercial feeds for the success in milk production. Farmers generally intercrop coffee with various annual crops with a notable lack of knowledge on complementarity and related ecosystem services of desmodium as cover crops. The coffee and livestock farmers reported that weather variability exacerbates feed scarcity, increasing dependence on commercial livestock feed purchases. Milk production, being a major economic focus in many coffee areas, is mainly supported by the purchase of commercial feeds, whose volume increases when rainfall is inadequate or delayed. Our findings indicate that the adoption of legume fodder cover crops in coffee cultivation would reduce farmers' reliance on commercial feeds and increase incomes, while benefiting from ecosystem services, when adopting sustainable agricultural intensification with changing climate remaining a major concern thereby increasing their resilience.

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Biological Nitrogen Fixation by Legumes and N Uptake by Coffee Plants

Cited by 39 publications

References 16 publications

Decomposition and Nutrient Release Dynamics of Shoot Phytomass of Cover Crops in the Recôncavo Baiano

Decomposition and Nutrient Release Dynamics of Shoot Phytomass of Cover Crops in the Recôncavo Baiano

Nitrogen Fixation and Transfer in Agricultural Production Systems

Assessment of ecosystem services knowledge, attitudes, and practices of coffee farmers using legume cover crops

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