Smothering of Weeds Through Ravi Crops And Their Geometry
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Date
1997
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Birsa Agricultural University, Ranchi
Abstract
In order to study smothering of weeds through rabi crops and their geometry, an experiment was conducted in the eastern section of the Ranchi Agricultural College Farm, Kanke. Ranchi under irrigated condition during the rabi season (November-March) 1995-1996. The experiment was laid out in split plot design with crops wheat, barley and lentil in the main plots and crop geometry-normal sowing (22.5 cm), close sowing (15 cm) and cross sowing (22.5x22.5 cm) in sub-plots. The treatments were replicated thrice. The soll of the experimental plot was sandy loam. low in fertility and slightly acidic in reaction.
Among the crops, wheat produced maximum grain equivalent. It was followed in decreasing order by lentil and barley. Barley produced minimum equivalent. When mean equivalent was compared among different crop geometry. cross and normal sowing caused similar equivalent and both displayed superiority over close sowing in Increasing the equivalent.
Wheat gave higher net return than lentil. Net return in wheat and barley was comparable. However, when mean net return was compared among different crop geometry, cross sowing caused higher net return than close sowing. In increasing net return normal was found as effective as cross sowing. It is interesting to note that benefit: cost ratio remained unaffected due to crops and crop geometry.
Maximum protein content was recorded in lentil which was followed in decreasing order by wheat and barley. However, when mean protein content was compared among different crop-geometry, maximum protein content was recorded in plants sown at cross sowing. It was followed in decreasing order by normal sowing and close sowing.
The above results clearly indicate that under the above sol moisture and fertility conditions, wheat should be grown at normal spacing i.e. at 22.5 cm. Moreover, this is the result of a single year and hence for confirmation of the results the investigation needs to be repeated..