Assessing the fertilizer phosphorus requirement of grain sorghum

Sahrawat, K. L.

doi:10.1080/00103629909370311

Cited by 6 publications

(4 citation statements)

References 7 publications

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“…These results were in agreement with those obtained by Rivero [24] and Stevens and Dunn [25]. The laboratory results, obtained prior to the study, had diagnosed a phosphorus deficiency in the soil, so this response to phosphoric fertilization was expected according to the studies of Sahrawat [27] and Gambaudo [29]. The magnitude of this response was estimated at approximately 1200 kg per hectare, which contributed a net profit of $2310 pesos per hectare at the current price of $3300 per ton of grain in 2020 in this region of the country.…”

Section: Fertilizationsupporting

confidence: 91%

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Technology for the Production of Sorghum for Grain in the Vertisols of Campeche, Mexico

Medina-Méndez¹,

Soto-Rocha²,

Hernández-Pérez³

et al. 2021

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This research was conducted in the state of Campeche, Mexico, between 2017 and 2018. On the one hand, the sorghum yield was explored in plots with Vertisol-type soils, which were supplied with rainwater. This had the purpose of knowing the results obtained by the producers in the area. On the other hand, an experiment was established with three factors: the genetic material of sorghum, planting density and fertilization. Finally, different varieties of soybeans and sorghum hybrids were also tested in large plots, to identify those that are best adapted to crop rotation. In the farmers' plots, the grain yield was between 4377 and 5543 kg•ha −1 . The planting density was from 142,667 to 197,334 plants per hectare, which indicated that, for each unit that increased the planting density, the yield increased by 37.5 grams. The experiment with three factors indicated that the best planting density was 300 thousand plants per hectare, with a grain yield of 5176 kg•ha −1 ; and the best hybrids were DKS-32 and SYN5515, with grain yields of 5794 and 3791 kg•ha −1 , respectively; likewise, the best dose of fertilizer was between 150 and 200 kg•ha −1 of diammonium phosphate, with a grain yield of 4527 -4562 kg•ha −1 . In relation to crop rotation, the varieties that stood out for their yield were Huasteca 300 and Vernal, in the case of soybeans; and the hybrids DKS-32 and SYN5515, in sorghum. Soybeans suffered greatly in their early stages of development from the excessive moisture retained by the soil, while sorghum seemed to be little affected by the lack of rain; for this reason, advancing the sowing date in soybeans and consequently in sorghum, is a strategy that could benefit grain yield in both species.

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Section: Fertilizationsupporting

confidence: 91%

“…for some crops [27]. Likewise, these soils have a high potassium content, sufficient to maintain an excellent production of grains and vegetables and abundant organic matter, which provides sufficient nitrogen to crops [28].…”

Section: Introductionmentioning

confidence: 99%

Technology for the Production of Sorghum for Grain in the Vertisols of Campeche, Mexico

Medina-Méndez¹,

Soto-Rocha²,

Hernández-Pérez³

et al. 2021

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“…The % of P recovered by the crop decreased with the increase in P rate from 45 to 180 kg P ha 21 and with time after application of P (Table 4). [8,9] From these results it would seem that annual application of P fertilizer at smaller rates should be a better option than application of larger rates once in two or three years. The mean total P recovered in five crops of rice cultivars varied from 5.5 to 9.4% (Table 4) and some differences were observed among the cultivars evaluated.…”

Section: Cumulative Direct and Residual Phosphorus Effects On The Recmentioning

confidence: 97%

“…[6] With this objective, a field experiment was conducted for six years (1993 -1998) to determine P response of four promising upland rice cultivars to fertilizer P and its residual value in an Ultisol. [8,9] Sahrawat et al 1000 [7] Results showed that there was a rapid loss of available P in the Ultisol [7] because of its fixation by sesqui-oxides.…”

Section: Introductionmentioning

confidence: 99%

Long-Term Phosphorus Fertilizer Effects on Phosphorus Uptake, Efficiency, and Recovery by Upland Rice on an Ultisol

Sahrawat¹,

Jones²,

Diatta³

et al. 2003

Communications in Soil Science and Plant Analysis

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Phosphorus (P) deficiency is a major constraint to upland rice production on highly weathered, low activity clay soils in the humid zone of West Africa. There is a paucity of information on the long-term fertilizer P effects on rice on these soils. A field experiment was conducted for six years (1993 -1998) to determine the response of four upland rice cultivars to fertilizer P applied at 0, 45, 90, 135, and 180 kg P ha 21 only once in 1993, and to residual P in 1994, 1995, 1996, and 1998. The experimental site was located on an Ultisol, low in available P, in the humid forest zone of Côte d'Ivoire, West Africa. This paper discusses long-term P effects on P uptake and efficiency of upland rice cultivars. The cultivars evaluated differed in cumulative agronomic and physiological P efficiencies, and the efficiencies were higher at lower P rates for the P-efficient cultivars.

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Response of field-grown cotton (Gossypium hirsutum L.) to phosphorus fertilisation on alkaline soils in eastern Australia

2004

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Abstract. Seventeen field experiments were conducted on alkaline soils in eastern Australia between 1997 and 2000 to evaluate irrigated cotton response to phosphorus (P) fertilisation. Only 3 experiments demonstrated significant (P < 0.05) increases in crop P uptake or lint yield with P application. Comparison of several soil P tests revealed that Colwell (bicarbonate) P provided the best correlation with P uptake at early flowering and lint yield. Soil P may limit cotton growth where Colwell-P concentrations are <6 mg/kg. Soil P concentrations at most of the sites were well above this critical limit, so P fertiliser application was not required. Average P uptake at physiological cut-out and P removal in seed cotton was 21 and 15 kg P/ha, respectively. Apparent P fertiliser recovery was variable (0–67%) and may have contributed to the lack of response that was observed in 14 out of the 17 experiments. It is recommended that at least 40 kg P/ha be applied to soils with Colwell-P concentrations <6 mg/kg to increase soil P reserves. Application rates of at least 20 kg P/ha are recommended where Colwell-P falls between 6 and 12 mg/kg to maintain soil P fertility.

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Assessing the fertilizer phosphorus requirement of grain sorghum

Cited by 6 publications

References 7 publications

Technology for the Production of Sorghum for Grain in the Vertisols of Campeche, Mexico

Technology for the Production of Sorghum for Grain in the Vertisols of Campeche, Mexico

Long-Term Phosphorus Fertilizer Effects on Phosphorus Uptake, Efficiency, and Recovery by Upland Rice on an Ultisol

Response of field-grown cotton (Gossypium hirsutum L.) to phosphorus fertilisation on alkaline soils in eastern Australia

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