Extractable phosphorus and rice yield in an ultisol of the humid forest zone in West Africa

Sahrawat, K. L.; Jones, M. P.; Diatta, S.

doi:10.1080/00103629709369823

Cited by 33 publications

(20 citation statements)

References 4 publications

(2 reference statements)

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“…This method has been found to be useful and has practical advantages in addition to showing whether good correlation existed (Sahrawat, Jones, and Diatta 1997). B. V. Bado et al 204 …”

Section: Soil Extractable Phosphorus and Rice 203mentioning

confidence: 96%

Critical Limit of Extractable Phosphorous in a Gleysol for Rice Production in the Senegal River Valley of West Africa

Bado¹,

Vries²,

Haefele

et al. 2007

Communications in Soil Science and Plant Analysis

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Soil-test correlation and calibration, a useful tool for fertilizer recommendations, has been little used in West Africa. Soils from a long-term fertility experiment have been used to study the relationship between rice yields and soil extractable phosphorus (P) with Bray 1 and Olsen methods. The Cate and Nelson graphical method was used for critical limits of soil P determination. The critical limits of soil extractable P at 95% relative grain yield were 9 mg P for the Bray 1P and 17 mg P kg 21 for Olsen P. The Olsen P was more correlated (r ¼ 0.63) with rice grain yields than Bray P (r ¼ 0.50), but a strong correlation (r ¼ 0.92) was also observed between the values of the two methods. Results indicate that at levels less than these critical levels of extractable P, P fertilizers should be applied to increase rice yields.

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“…This method has been found to be useful and has practical advantages in addition to showing whether good correlation existed (Sahrawat, Jones, and Diatta 1997). B. V. Bado et al 204 …”

Section: Soil Extractable Phosphorus and Rice 203mentioning

confidence: 96%

Critical Limit of Extractable Phosphorous in a Gleysol for Rice Production in the Senegal River Valley of West Africa

Bado¹,

Vries²,

Haefele

et al. 2007

Communications in Soil Science and Plant Analysis

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show abstract

“…The mean Bray P for experimental fields was 7 mg kg −1 (range 3-12 mg kg −1 ), with only one field approaching the 12-15 mg kg −1 threshold for P sufficiency in non-flooded crops including upland rice (Dodd and Mallarino, 2004;Sahrawat et al, 1997). Some of the fields had previously grown transplanted rice that results in low drainage rates and waterlogging, There were no significant treatment effects, but the block (field) effect was significant (P < 0.01).…”

Section: Aerobic Ricementioning

confidence: 99%

Improving crop production for food security and improved livelihoods on the East India Plateau II. Crop options, alternative cropping systems and capacity building

Cornish

Choudhury

Kumar

et al. 2015

Agricultural Systems

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“…The soil chemical properties of the two soils are low when compared with the critical values Senadhira 1994 andSahrawat et al, 1997) (Fig 1). The active Fe content (FeH) is very high compared with the critical level of 1.25% (Singh, 1992).…”

Section: Resultsmentioning

confidence: 99%

Elemental Composition of Two Rice Cultivars under Potentially Toxic an Aquept and Aquent

et al. 2009

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Iron toxicity is a major nutrient disorder affecting rice production of wetland rice in the irrigated and rain fed ecosystem in West Africa sub-region. Little attention has been paid to evaluating nutrient contents of rice cultivars grown on such soils and their relationship to the iron toxicity scores, grain yield and dry matter yields. A pot experiment was conducted on two potentially Fe-toxic soils (Aeric Fluvaquent and Aeric Tropaquept). The experiment was a 2 x 2 x 4 factorial experiment, with three replicates arranged in a randomized model. The factors were two soil types, two rice cultivars ('ITA 212') and tolerant ('Suakoko 8') and four Fe 2 + levels (control, 1000, 3000 and 4000 mg L-1). The results showed that for both susceptible cultivar ('ITA 212') and the relatively tolerant ('Suakoko 8') cultivar, little or no differences were observed in their elemental composition regarding micro and macro-nutrients. For the susceptible cultivar, results showed that none of the tissue nutrients significantly relates to iron toxicity scores (ITS), grain yield and dry matter yield on both soil types. However, for the tolerant cultivar, ITS was observed to be significantly related to tissue K and P contents, on the two soil types respectively. Tissue Ca and Mg were observed to be significantly related to the dry matter yield (DMY) on Aeric Tropquept. It could be concluded that for these rice cultivars grown on two potentially Fe-toxic soils, different tissue nutrients may trigger the manifestation of bronzing or yellowing symptoms of rice cultivars.

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Extractable phosphorus and rice yield in an ultisol of the humid forest zone in West Africa

Cited by 33 publications

References 4 publications

Critical Limit of Extractable Phosphorous in a Gleysol for Rice Production in the Senegal River Valley of West Africa

Critical Limit of Extractable Phosphorous in a Gleysol for Rice Production in the Senegal River Valley of West Africa

Improving crop production for food security and improved livelihoods on the East India Plateau II. Crop options, alternative cropping systems and capacity building

Elemental Composition of Two Rice Cultivars under Potentially Toxic an Aquept and Aquent

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