The potential roles of lime and molybdenum on the growth, nitrogen fixation and assimilation of m... more The potential roles of lime and molybdenum on the growth, nitrogen fixation and assimilation of metabolites in nodulated legume: A special reference to Phaseolus vulgaris L.
Supplemental material, sj-docx-1-oag-10.1177_00307270211045408 for Characterizing cassava farmer ... more Supplemental material, sj-docx-1-oag-10.1177_00307270211045408 for Characterizing cassava farmer typologies and their seed sourcing practices to explore opportunities for economically sustainable seed business models in Rwanda by Fleur Kilwinger, Samuel Mugambi, Rhys Manners, Marc Schut, Silver Tumwegamire, Athanase Nduwumuremyi, Sylvie Bambara and Marthe Paauwe, Conny Almekinders in Outlook on Agriculture
The effects of Rhizobium inoculation, lime and molybdenum supply on yield and yield components of... more The effects of Rhizobium inoculation, lime and molybdenum supply on yield and yield components of Phaseolus vulgaris L. were investigated in a split-split plot design in the greenhouse and field experiment. Results showed that Rhizobium application significantly improved the number of pods per plant, number of seeds per plant, 100-seed weight and seed yield. Furthermore, compared with the zero treatment control, molybdenum supply significantly increased the number of pods per plant, number of seeds per plant, 100-seed weight and seed yield. In general, these parameters were significantly increased with molybdenum supplied at the highest rate of 12 g per kg of seed. With regard to lime, significant increases were recorded in number of seeds per pod and seed yield. Application of lime at the highest rate (3 t lime per ha) was significantly superior to the control and 2 t of lime per ha. The combination of these supplies at different levels resulted in significant interactions in some ...
The effects of Rhizobium inoculation, lime and molybdenum on photosynthesis and chlorophyll conte... more The effects of Rhizobium inoculation, lime and molybdenum on photosynthesis and chlorophyll content of Phaseolus vulgaris L. were investigated in a split-split plot design in a greenhouse and field experiment. Results showed that R. inoculation, molybdenum and lime had significant effects on the leaf chlorophyll content (Chl), the photosynthesis (A), the intercellular CO2 concentration (Ci) and the transpiration rate (E) of Phaseolus vulgaris L. Application of Mo and lime at the highest rates (12 g of Mo per kg seed and 3 t lime ha -1 respectively) was significantly superior to the control and the 6 g of Mo per kg seed and 2 t lime ha -1 . The combination of these supplies at different levels resulted in significant interactions between some parameters suggesting that successful bean production in these acidic soils is unlikely unless attention is paid to supply these important nutrients in the study area.
Knowledge about changes of enzyme activities in the rhizosphere soil and secondary metabolites in... more Knowledge about changes of enzyme activities in the rhizosphere soil and secondary metabolites in Phaseolus vulgaris L. plant is necessary to understand especially during the management of acid soils. A glasshouse and field experiments were therefore conducted to investigate the effects of applying or not applying Rhizobium inoculation, molybdenum (0, 6, 12 g kg-1 seed) and lime (0, 2, 3 t ha-1) on the rhizosphere enzymes activities, flavonoids and anthocyanins concentration in P. vulgaris L. Glasshouse and field experiments indicated that Rhizobium inoculation, Mo at 12 g kg-1 seed and lime at 3 t ha-1 supply significantly showed lowest acid and alkaline phosphatase activities and flavonoids and anthocyanins concentration compared with control treatments which showed highest values. The lower rhizosphere activities of these enzymes and plants' secondary metabolites with Rhizobium and greater supply of Mo and lime suggest less stress for mineral elements essential for plant grow...
The potential roles of lime and molybdenum on the growth, nitrogen fixation and assimilation of m... more The potential roles of lime and molybdenum on the growth, nitrogen fixation and assimilation of metabolites in nodulated legume: A special reference to Phaseolus vulgaris L.
The overdependency on local cassava varieties and informal seed sources by farmers in Rwanda has ... more The overdependency on local cassava varieties and informal seed sources by farmers in Rwanda has contributed to the spread of cassava viral diseases. The use of improved planting materials made available through formal seed sources, that assure seed quality, is one way to prevent future disease outbreaks. In order to increase the availability of, and farmers access to, such materials there is increasing interest to develop seed business models. This study aims to understand seed sourcing practices of different farm typologies to inform the development of tailored seed business models. A total of 390 farmers were interviewed and the collected data was analyzed into clusters, resulting in seven farm typologies. Seed sourcing strategies, seed replacement dynamics and purchasing behavior of these typologies were explored via a seed tracing study. We find that more commercial oriented farmers have better access to formal seed sources. Nevertheless, the majority of farmers in all typologi...
The effects of Rhizobium inoculation, lime and molybdenum supply on yield and yield components of... more The effects of Rhizobium inoculation, lime and molybdenum supply on yield and yield components of Phaseolus vulgaris L. were investigated in a split-split plot design in the greenhouse and field experiment. Results showed that Rhizobium application significantly improved the number of pods per plant, number of seeds per plant, 100-seed weight and seed yield. Furthermore, compared with the zero treatment control, molybdenum supply significantly increased the number of pods per plant, number of seeds per plant, 100-seed weight and seed yield. In general, these parameters were significantly increased with molybdenum supplied at the highest rate of 12 g per kg of seed. With regard to lime, significant increases were recorded in number of seeds per pod and seed yield. Application of lime at the highest rate (3 t lime per ha) was significantly superior to the control and 2 t of lime per ha. The combination of these supplies at different levels resulted in significant interactions in some ...
The potential roles of lime and molybdenum on the growth, nitrogen fixation and assimilation of m... more The potential roles of lime and molybdenum on the growth, nitrogen fixation and assimilation of metabolites in nodulated legume: A special reference to Phaseolus vulgaris L.
Supplemental material, sj-docx-1-oag-10.1177_00307270211045408 for Characterizing cassava farmer ... more Supplemental material, sj-docx-1-oag-10.1177_00307270211045408 for Characterizing cassava farmer typologies and their seed sourcing practices to explore opportunities for economically sustainable seed business models in Rwanda by Fleur Kilwinger, Samuel Mugambi, Rhys Manners, Marc Schut, Silver Tumwegamire, Athanase Nduwumuremyi, Sylvie Bambara and Marthe Paauwe, Conny Almekinders in Outlook on Agriculture
The effects of Rhizobium inoculation, lime and molybdenum supply on yield and yield components of... more The effects of Rhizobium inoculation, lime and molybdenum supply on yield and yield components of Phaseolus vulgaris L. were investigated in a split-split plot design in the greenhouse and field experiment. Results showed that Rhizobium application significantly improved the number of pods per plant, number of seeds per plant, 100-seed weight and seed yield. Furthermore, compared with the zero treatment control, molybdenum supply significantly increased the number of pods per plant, number of seeds per plant, 100-seed weight and seed yield. In general, these parameters were significantly increased with molybdenum supplied at the highest rate of 12 g per kg of seed. With regard to lime, significant increases were recorded in number of seeds per pod and seed yield. Application of lime at the highest rate (3 t lime per ha) was significantly superior to the control and 2 t of lime per ha. The combination of these supplies at different levels resulted in significant interactions in some ...
The effects of Rhizobium inoculation, lime and molybdenum on photosynthesis and chlorophyll conte... more The effects of Rhizobium inoculation, lime and molybdenum on photosynthesis and chlorophyll content of Phaseolus vulgaris L. were investigated in a split-split plot design in a greenhouse and field experiment. Results showed that R. inoculation, molybdenum and lime had significant effects on the leaf chlorophyll content (Chl), the photosynthesis (A), the intercellular CO2 concentration (Ci) and the transpiration rate (E) of Phaseolus vulgaris L. Application of Mo and lime at the highest rates (12 g of Mo per kg seed and 3 t lime ha -1 respectively) was significantly superior to the control and the 6 g of Mo per kg seed and 2 t lime ha -1 . The combination of these supplies at different levels resulted in significant interactions between some parameters suggesting that successful bean production in these acidic soils is unlikely unless attention is paid to supply these important nutrients in the study area.
Knowledge about changes of enzyme activities in the rhizosphere soil and secondary metabolites in... more Knowledge about changes of enzyme activities in the rhizosphere soil and secondary metabolites in Phaseolus vulgaris L. plant is necessary to understand especially during the management of acid soils. A glasshouse and field experiments were therefore conducted to investigate the effects of applying or not applying Rhizobium inoculation, molybdenum (0, 6, 12 g kg-1 seed) and lime (0, 2, 3 t ha-1) on the rhizosphere enzymes activities, flavonoids and anthocyanins concentration in P. vulgaris L. Glasshouse and field experiments indicated that Rhizobium inoculation, Mo at 12 g kg-1 seed and lime at 3 t ha-1 supply significantly showed lowest acid and alkaline phosphatase activities and flavonoids and anthocyanins concentration compared with control treatments which showed highest values. The lower rhizosphere activities of these enzymes and plants' secondary metabolites with Rhizobium and greater supply of Mo and lime suggest less stress for mineral elements essential for plant grow...
The potential roles of lime and molybdenum on the growth, nitrogen fixation and assimilation of m... more The potential roles of lime and molybdenum on the growth, nitrogen fixation and assimilation of metabolites in nodulated legume: A special reference to Phaseolus vulgaris L.
The overdependency on local cassava varieties and informal seed sources by farmers in Rwanda has ... more The overdependency on local cassava varieties and informal seed sources by farmers in Rwanda has contributed to the spread of cassava viral diseases. The use of improved planting materials made available through formal seed sources, that assure seed quality, is one way to prevent future disease outbreaks. In order to increase the availability of, and farmers access to, such materials there is increasing interest to develop seed business models. This study aims to understand seed sourcing practices of different farm typologies to inform the development of tailored seed business models. A total of 390 farmers were interviewed and the collected data was analyzed into clusters, resulting in seven farm typologies. Seed sourcing strategies, seed replacement dynamics and purchasing behavior of these typologies were explored via a seed tracing study. We find that more commercial oriented farmers have better access to formal seed sources. Nevertheless, the majority of farmers in all typologi...
The effects of Rhizobium inoculation, lime and molybdenum supply on yield and yield components of... more The effects of Rhizobium inoculation, lime and molybdenum supply on yield and yield components of Phaseolus vulgaris L. were investigated in a split-split plot design in the greenhouse and field experiment. Results showed that Rhizobium application significantly improved the number of pods per plant, number of seeds per plant, 100-seed weight and seed yield. Furthermore, compared with the zero treatment control, molybdenum supply significantly increased the number of pods per plant, number of seeds per plant, 100-seed weight and seed yield. In general, these parameters were significantly increased with molybdenum supplied at the highest rate of 12 g per kg of seed. With regard to lime, significant increases were recorded in number of seeds per pod and seed yield. Application of lime at the highest rate (3 t lime per ha) was significantly superior to the control and 2 t of lime per ha. The combination of these supplies at different levels resulted in significant interactions in some ...
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