Intercropping cassava with soybean cultivars of varying maturities

Tsay J.S., Fukai S. and Wilson G.L. (1988) Intercropping cassava with soybean cultivars of varying maturities. Field Crops Research, 19 3: 211-225. doi:10.1016/0378-4290(88)90044-5


Author Tsay J.S.
Fukai S.
Wilson G.L.
Title Intercropping cassava with soybean cultivars of varying maturities
Journal name Field Crops Research   Check publisher's open access policy
ISSN 0378-4290
Publication date 1988
Sub-type Article (original research)
DOI 10.1016/0378-4290(88)90044-5
Volume 19
Issue 3
Start page 211
End page 225
Total pages 15
Subject 1102 Cardiovascular Medicine and Haematology
1110 Nursing
Abstract Our previous work has shown that early-maturing soybean is suitable for intercropping with vassava at a high latitude (27°S) in south-east Queensland, Australia, as it does not effect the tuber yield. The present study examines whether later-maturing cultivars of soybean with higher yield potential might be more productive. Plant arrangement for cassava was the same in sole crop and in intercrop, while two soybean rows in every six rows were replaced by a row of cassava in intercropping. All soybean cultivars dominated intercropped cassava, and their dry-matter growth and seed yield were not affected by competition with cassava. Growth of cassava was, on the other hand, severely restricted by intercropped soybean, particularly by late-maturing types. After removal of early-maturing soybean, cassava recovered quickly to produce high leaf-area and effectively intercepted solar radiation. Consequential high total dry-matter production, combined with high assimilate allocation to tubers, resulted in tuber yield at the final harvest similar to that in sole cassava. After the removal of late-maturing soybean, however, recovery was poor, and with a short growing season remaining, tuber yields were only 50-60% of that of sole cassava. In addition to their adverse effect on cassave growth, late-maturing cultivars were not suitable as an intercrop because of low harvest indices and low light-conversion efficiency (dry matter produced per unit intercepted radiation), although total light interception during the whole growth of cassava/soybean intercrop was similar to that of sole cassava. The low overall light-conversion efficiency in intercropping with late-maturing cultivars was due to very low dry-matter production of soybean during pod-filling when light interception was still high.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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