Mulch and irrigation effects on plant-water relations and performance of cassava and sweet potato

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dc.creatorGhuman, B.S.
dc.creatorLal, R.
dc.date1983-01
dc.date2017-06-01T08:39:13Z
dc.date2017-06-01T08:39:13Z
dc.date.accessioned2026-06-27T15:51:34Z
dc.descriptionMulch and irrigation effects on plant-water relations and performance of cassava cv. TMS 3001 and sweet potato cvs. TIS 2148 and TIS 2295 were investigated at Ibadan, Nigeria. Straw mulch @ 6 t/ha was spread immediately after planting of crops in September 1980. Irrigation equal to pan evaporation was applied during the dry season of 1980/81. Unmulched and/or nonirrigated plants of both crops had lower leaf water potential than mulched and/or irrigated. Averaged over all the treatments and cultivars, cassava had 15.00 h leaf water potential of −3.6 bars as compared to −9.6 bars of sweet potato. The daytime leaf diffusion resistance of cassava was similar (2–5 s cm−1) in unirrigated mulched and irrigated mulched and unmulched plots. But in unirrigated unmulched plots, the resistance increased to 19 s cm−1 at 15.00 h. Mulching did not affect leaf diffusion resistance (2–8 s cm−1) of both cultivars of sweet potato in irrigated plots. But in nonirrigated plots, leaf resistance increased with time during the day; the increase was less in mulched (from 2 to 40 s cm−1 in TIS 2148 and 3 to 13 s cm−1 in TIS 2295) than in unmulched (from 3 to 54 s cm−1 in TIS 2148 and 2 to 20 s cm−1 in TIS 2295) treatments. At harvest, the yields of cassava and sweet potato were not significantly affected by mulching. However, cassava yield was significantly greater in irrigated (24.7 t/ha) than in nonirrigated plots (18.2 t/ha). Similarly, irrigated sweet potato (at 8.5 t/ha of TIS 2148 and 8.7 t/ha of TIS 2295) outyielded the nonirrigated (at 5 t/ha of TIS 2148 and 2.8 t/ha of TIS 2295) one.
dc.identifierhttps://hdl.handle.net/10568/81276
dc.identifier.urihttp://hdl.handle.net/123456789/115589
dc.languageen
dc.publisherElsevier
dc.rightsLimited Access
dc.sourceGhuman, B.S. & Lal, R. (1983). Mulch and irrigation effects on plant-water relations and performance of cassava and sweet potato. Field Crops Research, 7, 13-29.
dc.subjectplant water relations
dc.subjectcassava
dc.subjectsweet potato
dc.subjectmulch
dc.subjectirrigation
dc.titleMulch and irrigation effects on plant-water relations and performance of cassava and sweet potato
dc.typeJournal Article

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Instituto Internacional de Agricultura Tropical (IITA)