Carbon-nitrogen ratio in soils with fertilizer applications and nutrient absorption in banana (Musa spp.) cv. Williams

Pérez, Wilson Antonio; Torres-Bazurto, Jaime

doi:10.15446/agron.colomb.v38n2.78075

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…On the other hand, the rate of organic matter decomposition decreases if the N content is low. Under such cases, the addition of nitrogenous sources influenced the rate of carbon mineralization [9].…”

Section: Introductionmentioning

confidence: 99%

Decomposition Dynamics of Leaf Litter Mixtures Enriched with NPS Fertilizer and Resultant Effects on Common Bean Productivity in Nutrient Depleted Soil

Laekemariam

Elka

2022

Applied and Environmental Soil Science

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Organic materials have a nonreplaceable role to improve soil quality and productivity. Yet, processes related to decomposition and nutrient supply capacity are restricted under nutrient-depleted soils. Thus, a field experiment was conducted to evaluate the decomposition rate of leaf litter mixtures treated with mineral nitrogen (N), phosphorous (P), and sulfur (S) fertilizer in the form of NPS (19N38P2O57S), and their effects on agronomic performance of common bean (Phaseolus vulgaris L.). The mixtures of croton (Croton macrostachyus) and erythrina (Erythrina brucei) leaf litters (LLs) were placed at 20 cm depth in a litterbag at a rate equivalent to 2.5 and 5 t/ha, and treated with four NPS rates (0, 50, 100, and 150 kg/ha). The leaf litters have low carbon (C) to N ratio. The experiments (litterbag and crop response) were laid out in a randomized complete block design with three replications. The decomposition pattern was monitored at a two week interval (15, 30, 45, and 56 days after application) and assessed for daily decomposition rate (k), weight loss, and time required to decompose half of the residue (t50). For the crop response experiment, selected growth and yield component parameters, and grain yield data were recorded. The results indicated that NPS fertilizer and the amount of LL were significantly ( p < 0.01 ) influenced the k values and weight loss. The k at 14 days varied from 4.47% day−1 (150 NPS kg/ha × 2.5 t LL/ha) and 2.75% day−1 (sole 2.5 t/ha LL) in which application of mineral NPS fertilizer enhanced k by 62.5%. The k values, averaged over 56 days, revealed 2.68% day−1 (150 kg NPS/ha × 2.5 t LL/ha), and 1.78% day−1 in the unfertilized 2.5 LL. The decay rate was faster within 14 days and declined afterward. Over 56 days, 60.4% and 46.6% of the original mass remained in litters without NPS fertilizer, and 150 NPS kg/ha x 2.5 t LL/ha, respectively. The residue weight loss also significantly decreased with time (r2 > 0.98). Half-lifetime was significantly ( p < 0.001 ) decreased with the increasing rate of NPS application (r = −0.86). The t50 values, averaged over 56 days, were between 38.9 days (nontreated LL) and 27.8 days (150 kg NPS/ha), respectively. The result regarding agronomic performance indicated that the application of NPS fertilizer on the leaf litters significantly ( p < 0.01 ) increased the growth, yield component, and grain yield of common bean. For instance, 150 kg NPS/ha on 2.5 t/ha LL has resulted in a 79% grain yield advantage over LL without NPS. Grain yield also showed significant relationship ( p < 0.01 ) with k (r = 0.67), mass loss (r = −0.67), and t50 (r = −0.66). The finding suggests that for plant residues with a narrow C/N ratio in nutrient-depleted soils, the addition of mineral NPS fertilizer is advantageous for increased decomposition and yield of legume crops.

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Section: Introductionmentioning

confidence: 99%

Decomposition Dynamics of Leaf Litter Mixtures Enriched with NPS Fertilizer and Resultant Effects on Common Bean Productivity in Nutrient Depleted Soil

Laekemariam

Elka

2022

Applied and Environmental Soil Science

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“…On the other hand, if the N concentration is low, the rate of organic matter decomposition declines. Adding nitrogenous sources afected the carbon mineralization rate in such circumstances [11].…”

Section: Introductionmentioning

confidence: 99%

Management of Alternative Organic Fertilizer Sources for Wheat Production: Evidence from Decomposition Dynamics and Agronomic, Economic, and Farmers’ Preferences

Laekemariam,

Gifole,

Kefita

2024

Applied and Environmental Soil Science

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The increasing cost of mineral fertilizer has posed a barrier for smallholder farmers, resulting in lower application rates, declined soil fertility status, and crop yield. Therefore, it is vital to look for cheap, impactful, and locally accessible organic fertilizer sources. Thus, two-year on-farm studies were conducted to evaluate potential organic fertilizer sources based on their decomposition dynamics and agronomic, economic, and farmer preference responses. The organic fertilizer sources used were dried tree leaves of Croton macrostachyus (Cm) and Erythrina bruci (Eb) and farm yard manure (FYM) and their mixture at ratios of 1 : 1:0, 2 : 1:0, and 1 : 1:1 Cm : Eb : FYM, respectively. The organic materials were buried using litter bags at 5 tons ha−1 rate in the crop field and retrieved at the weeks of two (14 days), four (28 days), six (42 days), and eight (56 days) after placement. Data were collected that included dry mass (DM) remaining, daily decomposition rate (k), and half-life (t1/2). Furthermore, to validate the findings of litter bag trials, the mixture of three organic fertilizer sources [1 : 1 : 0, 2 : 1 : 0, and 1 : 1 : 1 of Cm : Eb : FYM] and four application times (two, four, six, and eight weeks before sowing) were evaluated on bread wheat (Triticum aestivum) as a test crop in factorial randomized complete block design in a factorial arrangement with three replications. Data on agronomic, economic, and farmers’ preferences were recorded. The result revealed an increased weight loss over 56 days in the order of 2 : 1 : 0 > 1 : 1 : 0 > 1 : 1 : 1. The k value significantly (P<0.05) varied among organic fertilizer sources. The k value (% day−1) in 2013 varied between 3.42% and 0.023%, whereas in 2014, it was 3.10% and 0.23% for Cm and FYM, respectively. The k value was in the order of Cm > 2 : 1 : 0 > 1 : 1 : 0 > Eb > 1 : 1 : 1 > FYM. Applying organic fertilizers two weeks before sowing significantly improved wheat performance compared to applications made eight weeks prior. For example, the mean grain yield was 4.1 tons ha−1 and 2.6 tons·ha−1 at two and eight weeks before sowing, respectively. Although there were no statistically significant differences among the mixed sources, the 2 : 1 and 1 : 1 over 1 : 1 : 1 proportion have resulted in a higher grain yield. Farmers showed the highest preference rank for 2 Cm : 1 Eb and 1 Cm : 1 Eb, incorporated two weeks before sowing. The partial budget analysis demonstrated the highest net benefit from applying two weeks before sowing and 2 Cm : 1 Eb organic material mixture. Considering the findings generated from the decomposition test, agronomic and economic evaluations, and farmers’ preferences, we could conclude that the wheat growers should use 2 Cm : 1 Eb and incorporate it into the soil two weeks before sowing.

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“…Nitrogen is a macronutrient for the rice crop, and its abundance is connected to the existence of OC, forming a strong linkage between the two elements (Pérez & Torres‐Bazurto, 2020). The ratio of total C to total N has been studied and used as an indicator of soil properties and fertility (Radočaj et al, 2021; Zhang et al, 2016) to measure the mineralization and/or immobilization of soil organic matter.…”

Section: Introductionmentioning

confidence: 99%

High biochar rates may suppress rice (Oryza sativa) growth by altering the ratios of C to N and available N to P in paddy soils

Nguyen

et al. 2022

Soil Use and Management

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Although most studies have indicated that biochar can boost rice (Oryza sativa) growth, the material may also suppress it, depending on ratios of carbon (C) to nitrogen (N) and available N to available phosphorous (P). The current study sought to examine the impacts of biochar on rice growth and to identify underlying mechanisms. A pot experiment was conducted using two soils of high (3.05%) and low (0.54%) organic carbon (OC) content, mixed with 0, 1.5, 3, 6, and 12% biochar and planted with rice. Rice growth components, five rice tissue nutrients, and nine soil properties were measured. The results showed that the response of rice growth to biochar rates could be described using an exponential‐growth function in high‐OC soil but an inverted U‐shaped curve in low‐OC soil. In high‐OC soil, the 12% biochar rate led to the greatest total biomass, increased by 47%, whereas in low‐OC soil, the 3 and 6% rates exhibited the highest total biomass, increased by 44%, compared to the no‐biochar added soils. Biochar elevated the C:N ratio from 11.5 to 39.1, with an optimal range of 20–30 corresponding to the highest rice growth. Biochar declined the ratio of NH4‐N to Mehlich‐1 P, causing N deficiency. In brief, high biochar rates may suppress rice growth when the soil C:N ratio exceeds 30. The applied biochar rate should be considered based on soil properties typically OC and N content to obtain the C:N ratio between 20 and 30 for optimal rice growth.

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Carbon-nitrogen ratio in soils with fertilizer applications and nutrient absorption in banana (Musa spp.) cv. Williams

Cited by 5 publications

References 11 publications

Decomposition Dynamics of Leaf Litter Mixtures Enriched with NPS Fertilizer and Resultant Effects on Common Bean Productivity in Nutrient Depleted Soil

Decomposition Dynamics of Leaf Litter Mixtures Enriched with NPS Fertilizer and Resultant Effects on Common Bean Productivity in Nutrient Depleted Soil

Management of Alternative Organic Fertilizer Sources for Wheat Production: Evidence from Decomposition Dynamics and Agronomic, Economic, and Farmers’ Preferences

High biochar rates may suppress rice (Oryza sativa) growth by altering the ratios of C to N and available N to P in paddy soils

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