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

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Relation http://oar.icrisat.org/6685/
 
Title Plant Population and Spatial Arrangement Effects in Monocrops and Intercrops in Rainfed Areas
 
Creator Rao, M R
Rego, T J
Willey, R W
 
Subject Agriculture-Farming, Production, Technology, Economics
 
Description 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
 
Date 1977
 
Type Conference or Workshop Item
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/6685/1/PlantProduction_Rao_1977.pdf
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 .