Effects of Rhizobium inoculation and cropping systems on micronutrients uptake and partitioning in common bean (Phaseolus vulgaris) and Lablab (Lablab purpureus)
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2017, Vol 11, Issue 5
Abstract
The current study was conducted to assess the effects of Rhizobium inoculation and cropping systems on the availability and uptake of Cu, Zn, Fe and Mn in common bean (P. vulgaris) and lablab (L. purpureus). To achieve this aim, field experiments were conducted at Selian Agricultural Research Institute (SARI) for two cropping seasons in a randomized complete block design with 3-factorial arrangement. The treatments included two levels of Rhizobium (with and without rhizobia), 2 legumes (P. vulgaris and L. purpureus) and 5 cropping systems (sole maize or sole legumes, 1 row maize to 1 row legumes (1:1) i.e. 0m or 0.45m of legume from maize row, 1 row maize to 2 rows of legumes (1:2) i.e. 0.1m or 0.2m of legumes from maize rows). The results indicated that, Rhizobium inoculation and cropping systems significantly improved the uptake of Cu, Zn, Fe and Mn in roots, shoots and whole plant relative to non-inoculated plots. Lablab was superior on the shoots and whole plant uptake of Cu in both cropping seasons, Zn, Fe and Mn in cropping season 1 but inferior on Zn, Fe and Mn uptake in cropping season 2. With roots micronutrients uptake, lablab was superior to common bean in micronutrients uptake in both cropping seasons. Sole legume had higher micronutrients uptake in shoots, roots and whole plant than other intercropping systems except Cu in shoots for both seasons. Therefore, the best uptake of the micronutrients was recorded in inoculated sole legumes indicating improvement of plant nutritional status and soil fertility through N fixation.
Authors and Affiliations
Prosper I. Massawe, Kelvin M. Mtei, Linus K. Munishi, Patrick A. Ndakidemi
Keywords
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