Short communication Effect of the intensive rice crop system (SICA) on some growth variables and yield of a short-term variety
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Abstract
Rice Research Station areas of Pinar del Río, where the short-
term rice variety INCA LP-5 was planted in May, 2003, on a
Ferruginous Nodular Gley Hidromorphic soil, with the aim of
evaluating the effect of a new production form (SICA) over
some growth variables and yield, compared to the direct seeding
system pattern of 120 kg.ha-1 seeds. A randomized block design
with two treatments and four replicates was used, besides
determining the aerial part dry weight (g) and leaf area (m2) within a 0.50-m2 -frame in each treatment at the phenological
phases of maximum tillering, flowering and maturation; also
yield and its components were calculated at harvesting time.
Data were processed through a Student T (p<0.05). Those
plants growing under SICA conditions showed better growth
variables, the highest differences being recorded on the leaf
area index (IAF) at flowering phase, but they tended to decrease
at maturity stage. A similar situation was observed with yield
and its components. Studies on this subject are recommended
to be followed with other varieties, besides deepening on the
grain-filling process under this plantation system.
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