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V. B. Nadagouda , C. V. Patil , B. K. Desai , K. Manjappa

Abstract

The performance of seven tree species, Acacia auriculiformis, Azadirachta indica, Dendrocalamus strictus, Dalbergia sissoo, Eucalyptus, Leucaena leucocephala and Tectona grandis under high density planting (60 × 60 cm) was evaluated on irrigated red sandy clay loam soils of Regional Research Station, Raichur, Karnataka during the period from 1983 to 1988. At the end of fifth year, Eucalyptus produced significantly the highest wood yield (105 t ha ^-1) as compared to other tree species. The lowest wood yield (28.1 t ha^-1) was recorded in Tectona grandis. The net returns realised from wood yield was also more from Eucalyptus (Rs. 54,450 ha^-1) followed by Azadirachta indica (Rs. 46,602 ha ^-1) and Leucaena leucocephala (Rs. 43,857 ha ^-1), while the lowest net returns (Rs. 18,522 ha ^-1) was realised from Dendrocalamus strictus.

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V. B. Nadagouda , G. D. Radder , B. K. Desai , K. Manjappa , C. V. Patil

Abstract

A field experiment was conducted to study the effect of Eucalyptus on associated seasonal field crops under irrigation at Regional Research Station, Raichur, Karnataka, India. The saplings of Eucalyptus hybrid were planted by adopting 20 m × 1 m spacing in north-south direction during 1983. Saplings were allowed to grow for five years. At the end of fifth year five seasonal crops viz., pearl millet, maize, groundnut, pigeonpea and cotton were raised in between Eucalyptus tree lines during Kharif 1988-89. The extent of adverse effect of Eucalyptus was maximum on maize and minimum on cotton. The yields were significantly higher on western side than on eastern side. The yield increase with every unit increase in distance for tree line was also found significant. The interaction effect of direction and distance from tree line on yield of various test crops was not significant.

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