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    Is Poa spiciformis tolerant to defoliation? Defoliation effects on its productive performance

    Ferrante D1,2, A Cesa1,2, S Lewis2, G Jaurena3

    Phyton-International Journal of Experimental Botany, Vol.83, pp. 127-131, 2014, DOI:10.32604/phyton.2014.83.127

    Abstract In plants, compensatory growth takes place when the positive effects of defoliation compensate the negative ones, and defoliated plants show a similar or increased production in relation to non-defoliated plants. Our objective was to evaluate the ability to compensate defoliation of Poa spiciformis, a forage perennial tussock grass in southern Patagonia (Argentina). The experiment was performed in potted plants that grew under controlled conditions of watering and fertilization. Three defoliation frequencies were imposed (zero, three or five) using 20-25 day intervals among them. Harvest intensity was always equivalent to 50% of the aerial biomass. Fifteen plants… More >

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