Groundnut yield response to single superphosphate, calcitic lime and gypsum on acid granitic sandy soil
OAR@ICRISAT
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Relation |
http://oar.icrisat.org/5992/
http://dx.doi.org/10.1007/s10705-005-0075-3 |
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Title |
Groundnut yield response to single superphosphate, calcitic lime and gypsum on acid granitic sandy soil
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Creator |
Mupangwa, W T
Tagwira, F |
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Subject |
Groundnut
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Description |
Phosphorus and calcium are the major nutrients limiting groundnut production. The objectives were to determine (a) optimum application levels of P and Ca, and (b) compare the effectiveness of calcitic lime (40% Ca, 4.5% Mg) and gypsum (22% Ca, 17% S) as sources of Ca for groundnut grown on sandy soils. Field experiments were established in smallholder farming areas using four levels of P (0, 8.5, 17 and 34 kg ha-1) combined factorially with calcitic lime (0, 200, 400 and 800 kg ha-1) to give 16 treatments. Similar levels of P were combined factorially with gypsum (0, 100, 200 and 400 kg ha-1) to give sixteen treatments. Experiments were laid in a randomized complete block design with three replications. Phosphorus had a significant effect on groundnut yield at the majority of the experimental sites. Application of P at 8.5 kg ha-1 gave the optimum groundnut yield response. The optimum application rates for calcitic lime and gypsum were 200 and 100 kg ha-1. Gypsum and calcitic lime were not significantly different as sources of Ca for groundnut. Soil chemical properties were significantly improved following application of P and Ca sources
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Publisher |
Springer
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Date |
2005
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Type |
Article
PeerReviewed |
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Format |
application/pdf
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Language |
en
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Rights |
—
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Identifier |
http://oar.icrisat.org/5992/1/NutrientCyclingAgroecosystems_73_2-3_161%E2%80%93169_2005.pdf
Mupangwa, W T and Tagwira, F (2005) Groundnut yield response to single superphosphate, calcitic lime and gypsum on acid granitic sandy soil. Nutrient Cycling in Agroecosystems, 73 (2-3). pp. 161-169. ISSN 1385-1314 |
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