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Vishswanath Biradar ¹, S. Ravi ², G. Shailendra Kumar ³, K. Dayananada ⁴

Affiliations
1 Agricultural Research Station, Bidar (Karnataka), IN
2 Department of Soil Science, Krishi Vigyan Kendra, Bidar (Karnataka), IN
3 State Department of Agriculture, Yadagiri (Karnataka), IN
4 Krishi Vigyan Kendra, Bidar (Karnataka), IN

Abstract

Rainfall data for the period 1976-2010 was used to analyze seasonal and annual variability of rainfall. The mean annual rainfall is 849.0 mm with 28 per cent variability; with standard deviation of 241.1 mm. The rainfall during 1981-1985 periods ranged from 487.0 mm to 1337.7 mm with a mean rainfall (772.1 mm). Pre-monsoon season rains were deficit in 16 years, excess in 13 years and normal in 6 years as against the normal rainfall of 69.0 mm, the SWM rainfall was normal in 4 years, excess in 13 years and deficit in 18 years while during post-monsoon season there was only two normal rainfall year, deficit in 18 years and excess in 15 years.

Keywords

Annual and Seasonal Rainfall.

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S. Ravi ¹, Vishswanath Biradar ², K. Dayananda ³, G. Shailendra Kumar ⁴

Affiliations
1 Department of Soil Science, Krishi Vigyan Kendra, Bidar (Karnataka), IN
2 Agricultural Research Station, Bidar (Karnataka), IN
3 Krishi Vigyan Kendra, Bidar (Karnataka), IN
4 State Department of Agriculture, Yadagiri (Karnataka), IN

Abstract

The analysis of daily rainfall data of thirty five years (1976-2010) indicate that the average annual rainfall for the Bhalki region will be 884.3 mm with coefficient of variation of 23 per cent indicated that the annual rainfall was more or less stable over the years. The rainfall during 1986-1990 the SD (282.5 mm) was more with a CV of 27 per cent indicating more variability and dependability even though the mean rainfall (1033.8 mm) was higher when compared to other periods. During the months of south west monsoon (SWM) season (June-September) the rainfall ranged from the lowest 326.3 mm in 1994 to the highest 1076.7 in 2010 as against the normal SWM rainfall of 683.5 mm. The analysis of past 35 year's rainfall data revealed that, there was no single severe drought year.

Keywords

Annual and Seasonal Rainfall.

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G. Shailendra Kumar ¹, S. K. Gali ², S. Ravi ²

Affiliations
1 Karnataka State Seeds Corporation Agencies, Bidar (Karnataka), IN
2 Department of Soil Science and Agricultural Chemistry, College of Agriculture, University of Agricultural Sciences, Dharwad (Karnataka), IN

Abstract

A study was conducted in Kalghatgi taluk of Dharwad district, during the year 2001-2002 to study the effect of sulphur fertilization on growth and yield parameters of rice (Oryza sativa L.) involving the sulphur applied in soil at different doses 15, 30, and 40 kg S/ha, through SSP to find out the best combination for attaining results revealed that various levels of sulphur applied soil, with the four treatment combination. The maximum grain(3483 kg ha^-1) and straw yield (5413 kg ha^-1) was recorded at 40 kg S/ha were at par with that 15 kg S/ha, the per cent increased in tillers was 5.37,8.56 and 9.35 at 15, 30 and 40 kg S/ha, respectively, over control.

Keywords

Sulphur, Rice, Oryza sativa L., Grain, Straw.

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