ICAR Research Data Repository for Knowledge Management
Leaf phosphorus and sorghum yield under rainfed cropping of a Vertisol
OAR@ICRISAT
View Archive Info| Field | Value | |
| Relation |
http://oar.icrisat.org/1822/
http://dx.doi.org/10.1023/A:1009780411676 |
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| Title |
Leaf phosphorus and sorghum yield under rainfed cropping of a Vertisol
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| Creator |
Sahrawat, K L
Rahman, M H Rao, J K |
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| Subject |
Sorghum
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| Description |
A field experiment was conducted at Patancheru, Andhra Pradesh in 1987-89 to study the response of sorghum cv. CSH 6 to fertilizer P (0, 10, 20 and 40 kg/ha) on a Vertisol low in extractable P. One sorghum crop was grown each year during the rainy season (June to September). Tissue samples from the newest, fully-developed leaf were collected at 50% flowering stage to establish the relationship between leaf P concentration and grain yield. During the three years, sorghum grain yield and leaf P concentration increased in response to P application up to 40 kg/ha. Leaf P concentration was linearly related to grain yield (r² varied from 0.724 to 0.993). The critical leaf P concentration at 90% of the maximum grain yield was about 0.25% P. Phosphorus content in the grain was not significantly correlated to yield.
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| Publisher |
Kluwer
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| Date |
1999
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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/1822/1/NutCycAgro54_1_93-97_1999.pdf
Sahrawat, K L and Rahman, M H and Rao, J K (1999) Leaf phosphorus and sorghum yield under rainfed cropping of a Vertisol. Nutrient Cycling in Agroecosystems, 54 (1). pp. 93-98. |
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