Effects of phosphorus application method and rate on furrow‐irrigated ridge‐tilled grain sorghum

Gordon, W. B.; Whitney, D. A.

doi:10.1080/01904160009381994

Cited by 3 publications

(2 citation statements)

References 16 publications

(15 reference statements)

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“…This agrees with other research on sorghum (Elkased & Nnadi 1987) and cotton (Fosu et al 2006). Also, Gordon and Whitney (2000) reported a significant response in grain sorghum yield to P fertilizer in Kansas on a soil testing low in available P. However, infrequent crop response to added P on soils with very high soil test P values has been reported (Mallarino, Bordoli, & Borges 1999;Wortmann, Xerinda, & Mamo 2006).…”

Section: Discussionsupporting

confidence: 89%

Grain Sorghum Response to NPK Fertilizer in the Guinea Savanna of Ghana

Buah¹,

Kombiok²,

Abatania

2012

Journal of Crop Improvement

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Sorghum [Sorghum bicolor (L.) Moench] is an important food crop grown by subsistence farmers in Africa with little or no fertilizer.Field experiments were conducted in 2002 and 2003 on sandy loam soil in Guinea savanna of Ghana to determine the agronomic and economic benefits of applying nitrogen (N), phosphorus (P), and potassium (K) fertilizers to sorghum. Four N levels (0, 40, 80, and 120 kg −1 as urea) were combined with two P levels (0 and 17.2 kg P ha −1 as triple superphosphate) and two K levels (0 and 33.3 kg K ha −1 as muriate of potash) to constitute 16 treatments that were tested in a randomized complete-block design with three replications. Fertilizer N, P, and K did not show significant interactions for any parameter. Across years, added K did not influence grain yield and yield components. However, P increased yield by 14%, and N affected yield in a quadratic manner. The application of 40, 80, and 120 kg N ha −1 resulted in yield increases of 47%, 60% and 69% over farmers' practice (0 kg N ha −1 ), respectively. Economic analysis revealed that two N and P combinations, i.e., 40:0 and 40:17.2 kg ha −1 , were economically superior and stable within a price variability range of 20%. Thus, farmers in the Guinea savanna agro-ecology in Africa can get better returns on the money invested in fertilizer for producing improved sorghum than with their traditional practice of no fertilizer input.

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Section: Discussionsupporting

confidence: 89%

Grain Sorghum Response to NPK Fertilizer in the Guinea Savanna of Ghana

Buah¹,

Kombiok²,

Abatania

2012

Journal of Crop Improvement

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“…The seeds are the phosphorus-containing plant organs [35]. Nitrogen and phosphorus are antagonists of each other in terms of their physiological effects, where N stimulates the growth of vegetative organs, while phos-phorus stimulates the appearance of generative organs and crop ripening [36]. Regarding phosphorus, there was no significant difference between the varieties and the irrigation treatments.…”

Section: Discussionmentioning

confidence: 98%

Agronomic Performance of Grain Sorghum (Sorghum bicolor (L.) Moench) Cultivars under Intensive Fish Farm Effluent Irrigation

et al. 2022

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The growing global water shortage is an increasing challenge for the agricultural sector, which aims to produce sufficient quantity and quality of food and animal feed. In our study, effluent water from an intensive African catfish farm was irrigated on grain sorghum plants in four consecutive years. In our study the effects of the effluent on the N, P, K, Na content of the seeds, on the phenological parameters (plant height, relative chlorophyll content), the green mass, and on the grain yield of three varieties (‘Alföldi 1’, ‘Farmsugro 180’ and ‘GK Emese’) were investigated. Five treatments (Körös River (K) water and effluent (E) water: 30 and 45 mm weekly irrigation water dose; non-irrigated control) were applied with micro-spray irrigation. Compared to non-irrigated plants, effluent water did not negatively affect the N, P, K and Na contents of the grain crop. In terms of phenological parameters, the quality of the irrigation water (150–230 cm) had no negative effect on any of the measured parameters compared to the control (133–187 cm) values. In terms of biomass in 2020, grain yields were 89–109 g/plant with variety Alföldi 1, 64–91 g/plant with variety Farmsugro 180, and 86–110 g/plant with GK Emese.

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Nitrogen and Phosphorus Fertilizer and Residual Response in Cotton–Sorghum and Cotton–Cotton Sequences

Booker¹,

Bronson²,

Trostle³

et al. 2007

Agronomy Journal

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Nitrogen and P fertilizer response for cotton (Gossypium hirsutum L.) and sorghum [Sorghum bicolor (L.) Moench] in a reduced tillage rotation system in the Southern High Plains has not been well studied. During 2000 to 2003, an irrigated study of cotton–sorghum rotation vs. continuous cotton evaluated the crop rotation effects on cotton lint yield and assessed N and P fertilizer and residual fertilizer response for the two systems. Preplant soil samples were collected each spring to determine fertilizer rates. Cotton lint yields and cottonseed N were not affected by rotation with sorghum compared with continuous cotton. Nitrogen fertilizer response was observed in lint yields from 2001 to 2003 in cotton following sorghum, but not in continuous cotton. No P fertilizer or soil residual P response in cotton lint yields was found, regardless of rotation. Grain sorghum yields responded to N fertilizer in 2 yr. No grain sorghum response was observed to P fertilizer, but in 1 yr a yield response to residual P fertilizer relative to zero‐P plots was noted. Seed N uptake was greater in sorghum than in cotton. Nitrogen fertility level increased seed N in sorghum and in cotton following sorghum. Infrequent crop response to P fertilizer was not unexpected, especially when Mehlich‐3 soil P in zero‐P subplots was near the 95% sufficiency level of 20 mg P kg−1. The main finding of this study is that N fertilizer response was more consistent for cotton following sorghum than in a continuous cotton system. In refining N fertilizer recommendations, N debits may be needed for N immobilization in sorghum residue. Nitrogen credit may be appropriate from leaf litter for crops following cotton and for NO3–N in irrigation water.

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Effects of phosphorus application method and rate on furrow‐irrigated ridge‐tilled grain sorghum

Cited by 3 publications

References 16 publications

Grain Sorghum Response to NPK Fertilizer in the Guinea Savanna of Ghana

Grain Sorghum Response to NPK Fertilizer in the Guinea Savanna of Ghana

Agronomic Performance of Grain Sorghum (Sorghum bicolor (L.) Moench) Cultivars under Intensive Fish Farm Effluent Irrigation

Nitrogen and Phosphorus Fertilizer and Residual Response in Cotton–Sorghum and Cotton–Cotton Sequences

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