Open AccessAnálise do desenvolvimento de diferentes cultivares de soja em função da época de semeadura no município de Cachoeira do Sul – RS
Author(s) -
Clarissa Moraes da Silva,
Zanandra Boff de Oliveira,
Heloísa de Gois,
Irajá Jantasch de Souza,
Larrissa Ribeiro Rodrigues,
Tiago Tondolo Link,
Leonardo Baldissera Malffini
Publication year - 2020
Publication title -
ciência e natura
Language(s) - English
Resource type - Journals
eISSN - 2179-460X
pISSN - 0100-8307
DOI - 10.5902/2179460x40664
Subject(s) - cultivar , sowing , horticulture , bloom , phenology , biology , field experiment , yield (engineering) , agronomy , ecology , materials science , metallurgy
The objective of this study was to analyze the development of diferente soybean cultivars in two sowing dates in Cachoeira do Sul – RS. A field experimente was carried out at UERGS agronomic station, whose soil is classified as Red Argisol. The experimental desing used was in factorial desing (2x3). Factor “A” constitued two sowing dates (11/21/2018; 01/11/2019) and fator “B” constitued three soybean cultivars (NS4823; NA5909; NS6909). Phenological evaluations were performed weekly. Data were organized into 2 subperiods: emergence at full bloom (EM-R1) and full bloom at physiological maturity (R1-R8). In the subperiod EM-R1, the cultivars NS6909 and NA5909 did not present statistical differences among themselves, but differed from the cultivar NS4823, with duration of 49, 48 and 38 days, respectively. In the R1-R8 subperiod, no statistical differences were observed for cultivars NS6909 and NS4823, which differed from cultivar NA5909, with duration of 66, 67 and 71 days, respectively. Late sowing resulted in a shortening of 15 days in the total cycle, which may reflect yield reductions.