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Se estudió el cambio en el contenido nutricional de los tallos de yuca ocasionado por diferentes niveles de fertilización al suelo y el efecto de las estacas obtenidas de esos tallos sobre el cultivo subsiguiente. Los 9 niveles nutricionales del suelo incidieron en la altura y vigor de las planta...
To develop an effective breeding programme for rainfed production of the common bean (Phaseolus vulgaris L.), the inheritance of seed yield under such conditions should be understood, preferably considering the effects of environment to account for site or season specificity. Thus, heritability, ...
The application of biochar (biomass-derived black carbon) to soil has been shown to improve crop yields, but the reasons for this are often not clearly demonstrated. Here, we studied the effect of a single application of 0, 8 and 20 t ha?1 of biochar to a Colombian savanna Oxisol for 4 years (200...
To guide soil fertility investment programmes in sub-Saharan Africa, better understanding is needed of the relative importance of soil and crop management factors in determining smallholder crop yields and yield variability. Spatial variability in crop yields within farms is strongly influenced b...
Four inoculated ecotypes of each of Centrosema acutifolium, C. brasilianum and C. macrocarpum were grown in undisturbed soil (oxisol) cores in a glasshouse to study their response to 7 phosporus levels (a total of 11, 22, 45, 90, 180, 360 and 720 mg/core P, surface applied as Ca(H2PO4)2.H2O). Sev...
En la zona central cafetera de Colombia, en un suelo Pachic Melanudands medial isotérmico, se midió la actividad de arilsulfatasa en rizosfera de plátano Musa AAB, en tres sistemas de manejo agronómico (químico o convencional, tradicional y ecológico), cuatro profundidades (0-5, 5-10, 10-20 y 20-...
Climbing common bean (Phaseolus vulgaris L.) genotypes have among the highest yield potential of all accessions found in the species. Genetic improvement of climbing beans would benefit from an understanding of the inheritance of climbing capacity (made up of plant height [PH] and internode lengt...
To satisfy farmer and consumer preferences, breeding efforts to increase yield potential in common bean must take into account the interrelated effects of growth habit, seed size, maturity, and gene pool on yield expression in segregating populations. To examine the relationships among these trai...
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