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Search In : All of Krishikosh
author : Koshy, M M

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17_1_76-84_20025-69.pdf.jpg
Article
1979
Kerala Agricultural University

A pot culture experiment was carried out using the Vellayani Kayal soil (Tropaquept) in a randomized block design to study the effect of zinc in combination with lime on the absorption of nutrients by rice. The soil used in the study had a pH of 4.3 and it contained 0.11% N, 0.02% P20S, 0.36% K20r 0.10% CaO, 0.13% MgO and 4.2 ppm available Zn. The levels of zinc...

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29_1-2_15-20_0002-1628.pdf.jpg
Article
1991
Kerala Agricultural University

The different forms of phosphorus, such as saloid-P, Al-P, Fe-P, reductant soluble-P, occluded-P, Ca-P and organic-P, as well as total-P were determined in the surface and subsur face soils collected from 15 locations in the kole land area of Kerala State. The mean values of the different fractions showed that organic-P was the largest fraction, followed in ord...

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23_2_141-145_0002-1628.pdf.jpg
Article
1985
Kerala Agricultural University

An appraisal of tha physical characteristics of the Poonthalpadam soils reveals that the texture of the profile samples varies from sandy clay to clay. The highest clay content is found to be in the surface layers which may be either due To impeded drainage which does not permit cJay migration or due to deposition of clay by flood waters on to the surface of th...

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17_2_217-220_0101.pdf.jpg
Article
1979
Kerala Agricultural University

The effect of 0, 10, 20, 30, 40 and 50 ppm aluminium on the yield and growth characters of the rice plant grown in solution culture was studied, Toxicity symptoms of aluminium were not manifested on the tops while root growth was progressively decreased in 20, 30, 40 and 50 ppm aluminium containing pots. Decrease in root growth was associated with a tendency for ro...

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