Plant Population and Spatial Arrangement Effects in Monocrops and Intercrops in Rainfed Areas

Rao, M R and Rego, T J and Willey, R W (1977) Plant Population and Spatial Arrangement Effects in Monocrops and Intercrops in Rainfed Areas. In: Seminar on Dry Farming organised by the Institution of Agricultural Technologists, Directorate of Agriculture, Karnataka State, 16 April 1977, Bangalore on .

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Knowledge on the effect of populdtiorl changes and spatial arrangement in intercropping situations unlike for pure cropss is very limited. The paper describes some aspects of total population pressures proportional populations and relative space allocations which are highly interrelated in intercropping. It is pointed out that unless their effects are quantified independent of one . anothers clear understanding of the basic relationships between various crops in mixtures can not be established. The response of crops, sorghum, pearl millet, ragi, sunflower, safflower etc, , to changes in geometry of planting at constant population, such as wide row widths and pairing of rows, which may increase the scope for intercropping is discussed. Under moisture limiting conditions and no N fe r t ilisa t io n , doubling the row width of sorghum sole resulted in 15,8 - 93.2% higher yield depending on soil type, Widening the row width of base crop, without reducing its population, may allow an increase in the total population pressure of the system which may in turn give greater intercropping benefits. The advantages of grouping or pairing of rows in de fic it moisture conditions as an yield improvement practice in sole crops and as a method to alleviate competition between the associated crops in mixtures is discussed with examples. Three crop intercropping with widely spaced pigeonpea showed 66% advantage compared to 45% in the case of two crop intercropping. Possible spatial arrangement of crops for intercropping and sequential cropping to suit broad ridge and furrow systems of cultivation is discussed

Item Type: Conference or Workshop Item (Paper)
Subjects: Others > Agriculture-Farming, Production, Technology, Economics
Depositing User: Mr Sanat Kumar Behera
Date Deposited: 25 Mar 2013 05:45
Last Modified: 25 Mar 2013 05:45
Acknowledgement: UNSPECIFIED
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