EFFECT OF GRADED LEVELS OF SOIL SALINITY ON THE GROWTH, YIELD AND NUTRIENT UPTAKE OF CORIANDER (Coriandrum saCIvum. L.) CULTIVARS IN TYPICAL VERTISOLS
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Date
1995
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Professor Jayashankar Telangana State Agricultural University
Abstract
A pot culture experiment was conducted at Agricultural College, Bapatla during rabi l994—‘95 to study the effect of graded levels of soil salinity on the growth, yield and nutri— ent uptake of coriander (Coriandrum sativum.L) cultivars in typic chromusterts. The experiment was formulated with 5 levels of soil salinity viz , 0,75 dSm‘1 (control), 2.5, 5.0, 7.5 and 10 dSm‘l and 5 coriander varieties CS.4 (Sadhana), CS.6 (Swathi), CS.2 (Sindhu), CS.287 and No.49l with 3 replica— tions.
The study indicated that increasing levels of soil salinity significantly depressed seed germination per cent, plant height, number of branches per plant, drymatter production, seed yield and delayed germination period in coriander culti— vars. The study also revealed that the uptake of nutrients by coriander cultivars — nitrogen, phosphorus, potassium, sul— phur, iron, manganese, zinc and copper decreased significantly upto 10 dSm*, calcium, magnesium and sodium increased signifi— cantly upto 5.0 and 10.0 dSm‘1 respectively under increasing levels of soil salinity. The K/Na ratio also narrowed under increasing soil salinity. The study indicated that among coriander varieties CS.4 producedmore drymatter and seed and absorbedmore N, P, K, Ca, Mg, S, Fe, Mn, Zn and Cu than others. It was a superior variety with better salinity tolerance. Next in order were CS 6, CS.2 and No.49l. The variety CS.287 was much inferior with low tolerance to soil salinity.
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D4892