Nitrogen Contributions from Peanut Residues to Subsequent Crops

Jani, Arun Dilipkumar; Mulvaney, Michael J.

doi:10.32473/edis-ag431-2019

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…Sole sorghum sudangrass (SS‐100) had the slowest initial residue breakdown rate expressed as dry matter remaining followed by the remaining ratio mixtures and sunn hemp, perhaps due to the high C/N ratio (Table 1, Figure 2). In a manner similar to previously reported research, more rapid decomposition occurred during the early stage of the decomposition period (Jani et al., 2016; Jani & Mulvaney, 2019; Mulvaney et al., 2017).…”

Section: Resultssupporting

confidence: 88%

“…Some important factors to consider for integrating cover crops in a cropping system are cover crop selection (Wang et al., 2004; Wortman et al., 2012), cover crop termination method and timing (Jani et al.,2016; Jani & Mulvaney, 2019; Mulvaney et al., 2017), and cover crop management in monocultures or mixtures. These factors have the potential to influence the rate of nutrient cycling and the amount returned to soils (Sainju et al., 2008).…”

Section: Introductionmentioning

confidence: 99%

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Residue decomposition dynamics in mixed ratios of two warm‐season cover crops

Dorissant

Brym

Swartz

2022

Agrosystems Geosci & Env

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Cover crop residue management has gained attention over the past few decades due to the potential of cover crop residues to provide soil cover and nutrient availability for subsequent crops. Nutrients released from cover crop residues depend on the nutrient composition of plant tissue and ensuing rates of mineralization. To evaluate the rate of carbon (C) and nitrogen (N) mineralization from cover crops, a field decomposition experiment was conducted in a humid subtropical agricultural field. Residues of two warm-season cover crops, sunn hemp (Crotalaria juncea L.) and sorghum sudangrass (Sorghum bicolor L. × S. bicolor var. Sudanese), were placed in litterbags at various mixture ratios on the soil surface to quantify the amount of N and C released from the residues over 56 d. Residue biomass decomposition followed decay patterns that were similar despite treatment mixtures of cover crop ratios. The initial ratio of cover crop material in the litter mixture influenced early N release where ratios with increasing sunn hemp increased N decomposition. The majority of residue breakdown (50-75%), and C (50-75%) and N (65-75%) decomposition occurred during the first 7 d for all the treatments. A minor fraction of residue remained (10-14%) at Day 56, with 10-14% C and 7-25% N. The 25% N remained in the sole sorghum sudangrass treatment. These results indicate that N from legume cover crops may not be available to subsequent crops in humid subtropical soils lacking the capacity to retain nutrients leached out of cover crop residue, though small fractions of dry matter may remain.

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Section: Resultssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Residue decomposition dynamics in mixed ratios of two warm‐season cover crops

Dorissant

Brym

Swartz

2022

Agrosystems Geosci & Env

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“…Peanut green manure has a high nitrogen content, which optimally supports corn growth [30]. The use of peanut green manure can enhance nutrient content in the soil, providing sufficient nutrients to support corn growth [31]. Notes: 1. numbers followed by different letters in one column show a significant difference in DMRT (α = 0.05).…”

Section: Corn Growthmentioning

confidence: 99%

Effectiveness of Peanut Green Manure on Root Growth and Corn Yield in Alfisol Soil

Budiastuti,

Setyaningrum,

Purnomo

et al. 2023

IJDNE

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Addressing constraints associated with the low nutrient content of Alfisols used in agricultural practices, this study explored the potential of organic fertilizers in improving soil quality, health, and nutrient compositions. Specifically, the research examined the cultivation of corn on Alfisols supplemented with organic fertilizers, an approach aimed at addressing the growing demand for corn in Indonesia. Conducted from April 2022 to February 2023 at coordinates 07°38'07.04" S 110°57'00.7"E, this experimental study was structured according to a Randomized Complete Block Design with a single-factor treatment, consisting of six distinct doses of peanut green manure. The experiment was conducted with the following treatments: P0, which involved the use of inorganic fertilizer; P1, with the application of 2.5 tons/ha of peanut green manure; P2, with 5 tons/ha; P3, with 7.5 tons/ha; P4, with 10 tons/ha; P5, with 12.5 tons/ha. Each treatment was replicated thrice, yielding a total of 18 experimental units, each composed of 16 plants. The experimental plots were maintained within an area of 300 cm x 80 cm, with a planting distance of 100 cm × 50 cm. Data were subjected to an analysis of variance (ANOVA) at a 5% level, followed by Duncan's Multiple Range Test, also at a 5% level. A correlation analysis was performed to discern the relationships between the variables. The application of peanut green manure exhibited no significant differences in all variables, excluding root length. The longest root length (26.57 cm) was observed in treatments involving inorganic fertilizers compared to those with peanut green manure. However, the root length exhibited a significant difference in response to various doses of peanut green manure. This investigation underscores the importance of cultivating corn on Alfisol soils, considering the increasing food demand and the decreasing availability of optimal lands for cultivation. The utilization of Alfisol soils could provide a viable solution to these challenges.

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Nitrogen credits after peanut (Arachis hypogaea L.)

Mulvaney,

Iboyi,

Balkcom

et al. 2024

Agronomy Journal

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State‐level cooperative extension services provide fertilizer recommendations for row crops in the United States. Of these, nitrogen (N) recommendations are arguably the most important because N is the most common yield‐limiting nutrient in nonlegume crop production systems. Throughout the peanut (Arachis hypogaea L.) growing region of the United States, Cooperative Extension Services generally recommends 22–67 kg N/ha credit to crops following peanut, likely due to the assumption that peanut, being a legume, contributes N to the following crop. The body of peer‐reviewed literature indicates that N credits from peanut to the subsequent crop are negligible. Recent literature indicates that apparent differences in yield following peanut compared to a nonlegume are a result of nonlegume crop residue favoring N immobilization rather than N mineralization from peanut residue. Taken together, recent research corroborates the few previous scientific publications addressing the issue, namely, that cooperative extension service recommendations to reduce N fertilization to crops after peanut are not supported by the peer‐reviewed literature. Future field research should include summer fallows to determine if yield differences between legumes and nonlegumes are due to N credits by the legume or N immobilization by nonlegumes. Data on N loss pathways following peanut are needed to identify management strategies that can mitigate N losses after peanut harvest. In conclusion, the preponderance of peer‐reviewed science does not support current Extension recommendations regarding peanut N credits to the following crop.

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Nitrogen Contributions from Peanut Residues to Subsequent Crops

Cited by 4 publications

References 10 publications

Residue decomposition dynamics in mixed ratios of two warm‐season cover crops

Residue decomposition dynamics in mixed ratios of two warm‐season cover crops

Effectiveness of Peanut Green Manure on Root Growth and Corn Yield in Alfisol Soil

Nitrogen credits after peanut (Arachis hypogaea L.)

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