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Pedochemical characterization of rubber growing soils of north eastern upland zone of Kerala (Record no. 64663)

MARC details
000 -LEADER
fixed length control field	02221nam a2200193Ia 4500
100 ## - MAIN ENTRY--AUTHOR NAME
Personal name	Satisha G C
245 #0 - TITLE STATEMENT
Title	Pedochemical characterization of rubber growing soils of north eastern upland zone of Kerala
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Name of publisher	Placrosym XVII, 2006, Kochi, India. Journal of Plantation Crops, 34 (3). Indian Cardamom Research Institute (Spices Board), Idukki, India, pp.323-329.
520 ## - SUMMARY, ETC.
Summary, etc	Typical pedons developed on different geomorphic conditions namely hill and upper ridges, residual hill, pediments, undulated plain with hummocks, intervening basins and valley in Rubber Research Station, Padiyoor representing north eastern upland zone of Kerala were studied for their morphology and pedochemical characteristics, together with assessment of their potential for rubber cultivation. The soils in general were moderately deep to very deep and they had sub-angular blocky surface horizons. The soils contained higher amounts of clay fractions irrespective of geometric conditions. The clay content in soils of upper ridges varied from 48 to 70 per cent while in soils of lowlands/valley, it range between 32 to 70 per cent. Despite the high clay content, the soils were well drained with goos soil-water-air relationship indicating favourable edaphological property for rubber cultivation. The soils were strongly acidic and considerably high in organic matter contents that showed a decreasing trend with depth. Per cent base saturation of the soils was low to moderate ( 17 to 76;) and the cation exchange capacity (CEC) of the soils was low, varied from 5.4 to 15.0 cmol (p+)/kg suggesting that they are subject to very rapid decline in fertility demanding specific management measures to maintain soil fertility. The presence of 1:1 layer silicate clays (kaolinite) and oxides of Fe and Al in the clay fraction indicates poor release of nutrients through mineral weathering to meet the demands of rubber for rapid growth and high yield.
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical Term	Geomorphic units
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical Term	Kerala
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical Term	Pedochemical characteristics
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical Term	Soil morphology
700 ## - ADDED ENTRY--PERSONAL NAME
Personal name	Lakshmanan R
700 ## - ADDED ENTRY--PERSONAL NAME
Personal name	Nazeer M A
700 ## - ADDED ENTRY--PERSONAL NAME
Personal name	Rao D V N K N
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type	Journals

Holdings
Withdrawn status	Lost status	Damaged status	Not for loan	Home library	Current library	Shelving location	Date acquired	Koha item type
			Journals	RRII Library	RRII Library	Agronomy	15/01/2007	Journals