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University of Agricultural Sciences, Dharwad (2008)

Performance of Rabi crops in medium and deep black soils of northern dry zone of Karnataka

Shanthosh.Upanal

Titre : Performance of Rabi crops in medium and deep black soils of northern dry zone of Karnataka

Auteur : Shanthosh.Upanal

Université de soutenance : University of Agricultural Sciences, Dharwad

Grade : Master of Science in Agronomy 2008

Résumé
An investigation to study the performance of different rabi crops to two soil types was conducted in northern dry zone of Karnataka at Regional Agricultural Research Station, Bijapur during 2007-08. The experiment was laid out in split plot design with four replications. There were 10 treatment combinations consisting of two soil types viz., medium and deep black soil as main plot treatments and five crops viz., sorghum, sunflower, chickpea, coriander and safflower as subplot treatments during the cropping period 318.4 mm rainfall was recorded during 2007-08 as against the normal rainfall 363.8 mm. Significantly higher sorghum grain equivalent yield was recorded in sunflower (2811 kg/ha) followed by chickpea (1981 kg/ha) as compared to other crops. Among the crops, sorghum and sunflower recorded significantly higher grain yield of 1724 and 1548 kg/ha, respectively in medium black as compared to deep black soil. Whereas chickpea, coriander and safflower were significantly higher grain yield of 1384, 288 and 1386 kg/ha, respectively in deep black soil as compared to medium black soil. The data on soil moisture studies revealed that, soil moisture content at sowing was significantly higher in deep black soil (338.02 mm/0.9 m depth) as compared to medium black soil (326.33 mm/0.9 depth). Consumptive use of water was significantly higher in sunflower (452.82 mm/0.9 m depth) followed by sorghum (195.32 mm/0.9 m depth) whereas water use efficiency was significantly higher in sorghum (8.27 kg/mm/ha). The data on economics showed that, among the crops irrespective of soil types sunflower crop recorded significantly higher net return (Rs.26,700/ha) and B:C ratio (4.16). The interaction effect between soil types and crops showed that, sunflower crop in both medium and deep black soil recorded significantly higher net return (Rs.27169 and Rs.26231/ha, respectively) and B:C ratio (4.22 and 4.10, respectively) as compared to other interactions of crop and soil types

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