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Title: | Phosphorus availability to rice (Oriza sativa L.)–wheat (Triticum estivum L.) in a Vertisol after eight years of inorganic and organic fertilizer additions |
Other Titles: | Not Available |
Authors: | Muneshwar Singh, Sammi Reddy, K., Singh, V. P. and Rupa, T. R. |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR-CRIDA |
Published/ Complete Date: | 2006-02-17 |
Project Code: | Not Available |
Keywords: | Cattle manure; Green manure; Fertilizer N; Organic and inorganic P pools; Apparent P recovery; Vertisol |
Publisher: | Not Available |
Citation: | Not Available |
Series/Report no.: | Not Available; |
Abstract/Description: | Integrated use of inorganic fertilizer N and well decomposed cattle manure (CM) or 30–35 days old Parthenium (Parthenium hysterophorus L.), a weed grown off site as green manure (GM) under repeated applications of fertilizer P and urea N for eight years in a rice (Oriza sativa L.)–wheat (Triticum estivum L.) sequence was studied on transformation of fertilizer P applied to soil at the National Research Center for Weed Science, Jabalpur, India. Based on the results, it appeared that, repeated applications of 52 kg super-phosphate P resulted in a marked increase in Olsen P linearly with time. Conjunctive use of urea fertilizer N with organic manure resulted in a larger increase in Olsen P in the Vertisol. Studies further revealed that the greater accumulation of fertilizer P applied in excess to crop removal occurred in inorganic P in the plots receiving only fertilizer N. However, plots receiving fertilizer N along with organic manures led to P accumulation predominantly in organic forms. The study suggests that these two pools of P acted as a sink when fertilizer P was applied in excess to crop removal and are bio-chemically active. The Olsen P status after 8 cycles of rice–wheat crops revealed that the average amount of fertilizer P required after adjusting for crop uptake to increase Olsen P by 1 mg kg 1 soil was 7.2 kg P ha 1 in the plots receiving only fertilizer N. Whereas, application of 5 t FYM or 6 t GM reduced it to 4.6 kg P ha 1. The plots receiving manure always maintained a greater concentration of Olsen P. The application of CM or GM with fertilizer N enriched short-term inorganic P as well as long-term organic P fertility. After eight years, larger concentrations of organic P in the subsurface layer (16–30 cm), compared to initial values, indicates downward movement of P in organic forms. |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Research Paper |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Bioresource Technology |
NAAS Rating: | 13.54 |
Volume No.: | 98 |
Page Number: | 1474–1481 |
Name of the Division/Regional Station: | DRM |
Source, DOI or any other URL: | Not Available |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/58963 |
Appears in Collections: | NRM-CRIDA-Publication |
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