Common bean is an important crop with potential to curb malnutrition in poor Sub-Saharan African populations. Yields of common bean ( L.) are, however poor, limited by low soil phosphorus (P), nitrogen (N) and poor biological N-fixation. On-farm experiments were carried out to study the effect of N, P and rhizobia inoculation on common bean yield and yield components during the 2014/2015 and 2015/2016 cropping seasons in Eastern Zimbabwe. Experiments were conducted on five farmers' fields located in two agroecologies; three fields were considered to be degraded with soil organic carbon (SOC) < 4 g kg and available P < 6 mg kg, while the two non-degraded sites had SOC > 7 g kg and available P > 15 mg kg. Two common bean varieties (Gloria and NUA45) were tested in a split-plot arranged in randomized complete block design. The main plot factor was the combination of N (0 and 40 kg ha) and P (0 and 20 kg ha), and the sub-plot factors were variety (Gloria and NUA 45) and inoculation with strain CIAT899 (+/- inoculum). At planting, both N and P were applied at 20 kg ha, with an additional 20 kg ha N top dressing applied at flowering. Analysis of variance indicated common bean did not respond to rhizobia inoculation (P > 0.05) whilst P significantly increased the number of nodules and active nodules per plant (P < 0.001), and grain yield. Application of 40 kg ha N significantly increased the number of pods per plant, number of seeds per pod, and grain yields. A significant NP interaction was only observed on grain yield for non-degraded soils. Co-application of N and P in non-degraded sites increased grain yields from 0.27 to 1.48 Mg haduring the first season and from 0.37 to 2.09 Mg haduring the second season. On degraded sites, NP application resulted in uninspiring grain yield gains of 0.09 to 0.19 Mg ha during the first season, and from 0.16 to 0.28 Mg ha in the second season. In general, effects of N or P were not significantly different, suggesting that farmers could invest in either of these nutrients for increased common bean grain yields. Strategically, P investments would be more logical as residual P effects to rotational cereals improve overall cropping system performance. The response of common bean to inoculation in Zimbabwe still needs to be widely investigated for these and other varieties.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6142818 | PMC |
http://dx.doi.org/10.1016/j.agee.2018.08.010 | DOI Listing |
Food Chem
January 2025
Laboratory of Food Technology, Department of Microbial and Molecular Systems (M2S), KU Leuven, Kasteelpark Arenberg 22, PB 2457, 3001 Leuven, Belgium. Electronic address:
Pulse flours consisting of isolated cotyledon cells (ICC) have been incorporated in foods with delayed amylolysis. To optimize the cost-benefit ratio, understanding how the dosage of cellular ingredient affects starch digestibility is essential. Therefore, dose-response relationships were established to evaluate the sensitivity of amylolysis kinetics to the inclusion of intact cells in whole common bean-based flours.
View Article and Find Full Text PDFBraz J Microbiol
January 2025
Laboratório de Genética de Microrganismos (LAGEM), Departamento de Biologia Geral - CCB, Universidade Estadual de Londrina - Campus Universitário, Londrina, PR, Brazil.
The common bean (Phaseolus vulgaris L.) plays a significant economic and social role in Brazil. However, the national average yield remains relatively low, largely because most bean cultivation is undertaken by small-scale farmers.
View Article and Find Full Text PDFJ Bacteriol
January 2025
Department of Biological Sciences, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA.
a β-proteobacterium, forms a nitrogen-fixing symbiosis with many species of the large legume genus as well as with common bean ( L.). are considered to have evolved nodulation independently from the well-studied α-proteobacteria symbionts of legumes.
View Article and Find Full Text PDFFood Funct
January 2025
Department of Pharmacology, Zunyi Medical University, Zhuhai Campus, Zhuhai 519041, PR China.
(), one of the most common infectious pathogens in the world, can cause gastritis, digestive ulcers, and even gastric cancer. urease (HPU) is a distinctive virulence factor of that allows it to be distinguished from other pathogens. Dried ginger is a famous edible and medicinal herb that is commonly used to prevent and treat gastrointestinal tract-related diseases.
View Article and Find Full Text PDFPlant Cell Environ
January 2025
Department of Plant Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, Al-Khoud, Oman.
The increasing frequency of concurrent heat and drought stress poses a significant challenge to agricultural productivity, particularly for cool-season grain legumes, including broad bean (Vicia Faba L.), lupin (Lupinus spp.), lentil (Lens culinaris Medik), chickpea (Cicer arietinum L.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!