Short communication Rice growth and yield of two short-term varieties within dry season
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Abstract
Research Station, Pinar del Río, using INCA LP-5 and Reforma
varieties, within the dry season of 2004, on a Ferruginous
Nodular Gley Hydromorphic soil, with the objective of
determining growth dynamics, yield and its main components.
The direct seeding technology was applied with a norm of
20 kg.ha-1. Cropping activities followed rice technical
instructions. A randomized block design with four replications
was used and experimental plots had a 25 m2 area. Dry matter
from the aerial part of plants (g.m2) was calculated in a 25-m2
frame and samplings started 25 days after germination, at variable
intervals, up to grain maturity. Absolute growth rate
(AGR) of the aerial part, agricultural yield and its main
components were also calculated, whereas means were
compared through T Student test (p<0.05). Results proved
that INCA LP-5 kept a quicker growth rate and biomass
accumulation than Reforma variety during the whole cycle,
besides surpassing the latter one regarding agricultural yield,
showing highly significant differences.
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