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Row spacing and seed physiological quality of Crotalaria species

Authors :
Bruna Neves Pereira da Silva
Tathiana Elisa Masetto
Rodrigo Arroyo Garcia
Mariana Zampar Toledo
Source :
Pesquisa Agropecuária Tropical, Vol 52, p e72674 (2022)
Publication Year :
2022
Publisher :
Universidade Federal de GoiƔs, 2022.

Abstract

Crotalaria crops have important uses, such as in green manuring, nematode control, biological nitrogen fixation and sugarcane reform in Savanna areas. Due to its strategic importance, knowledge about crotalaria seed production technology is a relevant factor to ensure the availability of high physiological quality seeds. This study aimed to assess the effect of two row spacings (20 and 40 cm) on the germination and vigor of Crotalaria ochroleuca and Crotalaria spectabilis seeds produced in two crop seasons (2018 and 2019). The experimental design was randomized blocks, with four replications, in a 2 x 2 factorial scheme (spacing x crop season), for each species. The climatic conditions during seed production significantly influenced the physiological quality of the crotalaria seeds. The 2018 harvest, with more abundant rainfall and milder temperatures during flowering, provided more vigorous seeds for both species. The 20 cm spacing was more efficient to produce C. ochroleuca seeds with high physiological performance. Notwithstanding, C. spectabilisseeds showed a higher physiological quality when produced under 40 cm spacing than when produced under denser cultivation.

Details

Language :
English, Portuguese
ISSN :
19834063
Volume :
52
Database :
Directory of Open Access Journals
Journal :
Pesquisa AgropecuƔria Tropical
Publication Type :
Academic Journal
Accession number :
edsdoj.633a6cbf471c42418c6ade983bd652f1
Document Type :
article
Full Text :
https://doi.org/10.1590/1983-40632022v5272674