Availability to crops of residual p from a sludge‐treated soil

Taylor, Robert W.; Lindo, Pauline; Shuford, James W.; Adriano, D. C.; Sajwan, K. S.

doi:10.1080/10934529809376777

Cited by 1 publication

(1 citation statement)

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“…In relation to soil P value, Olson and Sander (1992) reported that maize response was quite unlikely when the soil test values are greater than 15 mg P/kg. Taylor et al (1998) reported strong relationship between extractable soil P content and tissue concentration with correlation values of 0.77** (Mehlich-I) and 0.74** (Bray P-I) for Sudan grass. In relation to genotype, Sumio and Barber (1993) described that plant varieties vary in the amount of nutrients they absorb from the soil.…”

Section: Introductionmentioning

confidence: 94%

Phosphorous use efficiency as affected by phosphorous placement methods and maize genotypes in Arsi Neggele, Ethiopia

Tefera¹,

Gebrekidan²

2017

Net J Agric Sci

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Placement geometry of phosphorous (P) fertilizer potentially affects plant P use efficiency. Recognizing the virtual effect of placement methods and maize genotype to P absorption, a field experiment employing a split plot design was conducted in Arsi Neggele, Ethiopia to investigate the relative effect of different P placement methods and maize genotypes on available soil P, uptake and apparent recovery of P. The values of Bray-II available soil P showed greater variation due to P placement methods than due to maize genotypes. Though inconsistent across all varieties, grain P uptake response was higher for placement between two seeds (PPD) or row drilling (RD) than point placement at a side (PPS), broadcasting (BC) and no P applied plots (NPP) under the local cultivar. It was also higher for PPD than PPS, BC and NPP under the varieties PHB-3253 and A-511, and was indifferent under the variety BH-540. Similarly, P uptakes in plant and stover plant parts were in most cases superior for PPD and RD than the other placement methods. For genotype by P placement interaction, the highest statistical plant and stover P uptakes values were observed for PPD combined with local cultivar. The same PPD method combined with PHB-3253 and A-511 revealed the most and second most efficient grain P uptakes, respectively. Apparent P recovery also varied from less than zero to 60% due to the effects of the two factors and their interaction with substantial soil and plant P nutritional interrelationship.

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Section: Introductionmentioning

confidence: 94%