Vegetable yield of amaranthus as determined by repeated against uprooting harvesting
Paper Details
Vegetable yield of amaranthus as determined by repeated against uprooting harvesting
Abstract
Vegetable yield of Amaranthus is influenced as it would be expected by genetics, environment and management practices during the crop growth in the field, but also responds to harvesting technique once the crop has reached harvest. A study was conducted at Sokoine University of Agriculture in Morogoro, Tanzania, to evaluate yield performance of grain and vegetable type Amaranths under uprooting and repeated harvesting practices. Two vegetable type and one grain type Amaranths were used in the experiment, where harvesting involved clipping the growing shoot or twigs one quarter (1/4) or half (1/2) length of the shoot or twig from the lowest leaf node; or uprooting the plant from the soil then getting rid of the subterranean portion. Results from analysis of variance showed varying significant effects of harvesting techniques, varieties, and their interaction. Harvesting technique effects on yield were significant for the 1st, 2nd and 3rd harvest yields while effect of genotypes was significant throughout 1st to 5th harvests as well as total yield. Significant interaction existed in the 1st and total yields (P < 0.05). Repeated harvesting (clipping) increased total yield of the vegetable type genotypes over uprooting, while yield from uprooting was best in the grain type genotype, up to > 50% more yield. Differences in yield, one as high as 213.7% were observed between repeated harvesting and uprooting interacting with genotypes. Even though repeated harvesting increased total yield over uprooting, this cannot be universally generalized, it is dependent on, at least, variety type.
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