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Theses

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1970 - 19754
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Subject: Agricultural Chemicals × Author: KAU × End date: 1979 × Start date: 1970 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Studies on the effect of zinc in combination with lime on the growth, yield and absorption of nutrients by rice
    (Division of Agricultural Chemistry, College of Agriculture, Vellayani, 1975) Mariam, K A; KAU; Koshy, M M
    A pot culture experiment was carried out to assess the effect of different levels of zinc and lime on the growth, yield and chemical composition of rice, variety Annapurna. The soil used was collected from the kayal land attached to The College Farm, Vellayani. The levels of zinc and lime applied in the study were 0,10,20 and 40 kg/ha of zinc sulphate and 0, 250, 500 and 1000 kg/ha of 'Geolime' respectively. A randomised Block Design with 16 treatment combinations and 3 replications were used in the experiment.
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    ThesisItemOpen Access
    Morphological and Physico-chemical properties of the kayal soils of Kuttanad, Kerala State
    (Division of Agricultural Chemistry, College of Agriculture, Vellayani, 1975) Gangadhara Menon, P K; KAU; Aiyer, R S
    A study made on the morphological and physico-chemical characteristics of the kayal profiles of the Kuttanad region of Kerala revealed the following salient features. (1) These soils are classified under the order- ENTISOL, Sub order- Aquent and great group- Hydraquent according to the seventh Approximation. (2) Texturally they are classified mostly as silty loan or sandyclay loan, fine sand being the dominating fraction in all the profiles and layers. Only the surface soil of the Chithira kayal profile is clayey in texture with a maximum of 36.5 per cent clay. (3) The physical characteristics of the two profiles from the Rani kayal vary widely. While the profile 1 shows a decrease in clay content with increase in depth, the second profile shows a reverse trend for clay as well as fine sand. Fine sand is maximum in the middle layer of profile 1.
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    ThesisItemOpen Access
    Studies on a manure supplement containing secondary and trace elements prepared from sea water (Sagar) on the growth, yield, quality and absorption of nutrients by rice
    (Division of Agricultural Chemistry, College of Agriculture, Vellayani, 1975) Chinnamma, N P; KAU; Money, N S
    A field experiment was conducted to assess the effect of application of Sagar, a manure supplement prepared from the sea water on the growth, yield and quality of rice and absorption of nutrients from soil. The result obtained are summarised below. 1) Application of NPK increased significantly all the growth characters and these characters were increased steadily with increase in the levels of NPK. Sagar application increased considerably the number of tillers and the number of productive tillers per plant.
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    ThesisItemOpen Access
    Studies on copper and zinc status of Kerala rice soils and the response to these elements by IR-8
    (Division of Agricultural Chemistry, Agricultural College and Research Institute, Vellayani, 1970) Balakrishnan, Nayar C; KAU; Subramoney, N