No abstract

Considerable variation exists in pepper (Capsicum spp.) germplasm, which can be useful in improvement of yield and fruit quality. Evaluation and characterization of variation in pepper is necessary to identify genotypes suitable for use in improvement programs. Accessions of long cayenne pepper (C. frutescens L.) were collected from locations in southwestern Nigeria and evaluated for growth and yield. Quantitative characters observed on 31 accessions were evaluated during two cropping seasons in 2008. About one third of accessions had higher fruit yield when planted later in the year; the remainder had similar yields in both seasons. Intra-accession variability for fruit length indicates that accessions were heterogeneous. The accession from Akure, with yield not lower than 100 g/plant in each season, had stable, high performance. Improvement in yield appears to be feasible with the landraces of long cayenne pepper available. The second season may be more promising for long cayenne pepper production in Nigeria.

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Amaranth grain yield varies widely in response to environment, weather conditions, species, genotype and production techniques. With appropriate varieties, yields of grain amaranth can be improved. The objective of this study was to assess the extent of yield variability in exotic grain amaranth accessions between locations. Field trials involving 28 accessions as treatments were conducted at two locations namely the

The experiment was conducted at National Horticultural Research Institute, Ibadan and Ladoke Akintola University of Technology, Teaching and Research Farm Ogbomoso between August and December, 2015. Five accessions of grain amaranth were screened in the field at both locations. The trials was laid out in Randomized Complete Block Design (RCBD) was used in assigning treatments in the field and replicated three times. Seven Nitrogen sources: poultry manure, cow dung, pacesetter organic fertilizer, brewery waste, providence organic fertilizer, Aleshinloye organic fertilizer N:P:K and control each applied at 120 kg N ha-1 imposed on the five selected accessions. Data were collected on growth (plant height, stem girth, number of branches and number of leaves) biweekly and subjected to analysis of variance. The results shows that, irrespective of the accessions, the two agro-ecological zones are suitable for high grain yield of grain amaranth but Ogbomosho; derived savannah zone gave better growth biomass than the transitional rainforest ecology of Ibadan in grain amaranth production. To improve the growth of amaranth, addition of fertilizer up to 120 kg N ha-1 is recommendedpreferably organic fertilizer like cow dung.