Browsing by Author "Daffa, Halima Salimu"

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    Production and nutritional quality of amaranthus genotypes under different soil moisture regimes
    (University of Dar es Salaam, 2020) Daffa, Halima Salimu
    Production and nutritional quality of amaranthus genotypes under different soil moisture regimes Halima Salimu Daffa MSc. (Applied Botany) University of Dar es Salaam, College of Natural and Applied Science, 2020 Information on the effects of soil moisture on productivity and nutritional quality of amaranthus genotypes is limited in Tanzania. This study was conducted to assess the effects of soil moisture on yield and nutritional quality of amaranths genotypes. Experiments were carried out at World Veg in Arusha from April to August 2018 with three irrigation frequencies (once every two weeks, once every week and twice a week) and at MARC in Dar es Salaam from February to June 2019 with four irrigation frequencies (once every two weeks, once every week, twice every week and once a day). Six amaranthus genotypes as subplots (Madiira 1, AH-TL-Sel, Mchicha, Local, Madiira 2 and BRESIL (B)-Sel) were tested in a split plot arrangement in RCBD with 4 replications. From pot experiment, the highest dry vegetative marketable yields were from ‘Madiira 1’ and Local with 19.4, 17.5 and 15.8g/plant respectively when irrigated twice every two week whereas the lowest was from AH-TL-Sel (4.9g/plant) at once every two weeks irrigation frequency. On other hand the field experiment the highest dry vegetative marketable yield were from AH-TL-Sel, ‘Madiira 2’ and ‘Madiira 1’ with 20.64, 14.42 and 13.75g/plant respectively from plots irrigated twice every week while the lowest yield was from BRESIL (B)-Sel (7.86g/plant) from plots irrigated once every two weeks. Twice a week irrigation frequencies from both experiment resulted higher grains yield in AH-TL-Sel, Mchicha and BRESIL (B)- Sel with 16.9, 16.66 and 14.14g/plant in pots and 14.39, 15.25 and 19.69g/plant in the field experiment. The lowest grains yield was from local genotype with 1.47g/plant and 3.64g/plant from the pot and field experiments respectively when irrigated once every two weeks. The highest iron contents were from local and BRESIL (B)-Sel with 296.66 and 292.13mg/100g at once a week and once every two weeks respectively from pot experiment whereas from the field experiment BRESIL (B)-Sel had higher iron of 254.59mg/100g when irrigated once every two weeks. Crude protein was found higher in genotypes BRESIL (B)-Sel and AH-TL-Sel grains from both pot and field experiments with 26.25 and 24.74% (pot) and 41.36% and 3.45% (field) respectively. The lowest crude protein was from Madiira 2 with 8.64% and 8.05% from pot field experiment respectively. Subject