Effects of tillage operations and weed control measures on soil variables and soybean yield
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Date
2019-06
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
The object of this study was to use an appropriate statistical method for analyzing the experimental data. The data were collected from the research farm of A.I.C.R.P. on Weed Management, Department of Agronomy, Dr. P.D.K.V., Akola (Maharashtra) during the year 2016-17. The effect of tillage practices on the soil characteristics and growth components were analyzed by two different methods viz., repeated measures in strip plot design and multi-observation data (measurement over time) in strip plot design. The power of the test for both the methods was nearly equal. Consequently any one of these two methods may be used for the analysis. The soybean yield data were analyzed by two methods viz., ANOVA and ANCOVA. Analysis of covariance with two covariates i.e. number of grains per plant and number of pods per plant was preferred for improving the precision of the experiment. The results obtained from correlation and path coefficient analysis strongly indicate that number of branches per plant, number of pods per plant and number of grains per plant should be considered as indices for selecting high yielding soybean variety.
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