Physiological response of marandu grass seeds exposed to NPK fertilizer

Abstract

To facilitate seeding process of forage species, a common practice is to mix seeds with fertilizers in monocropping and intercropping or in implementing integrated livestock production systems. However, in prolonged periods of contact, the fertilizer’s salinity and acidity negatively affect the seeds’ physiological quality. Therefore, this study intends to verify the effect of ten periods (0, 3, 6, 12, 24, 36, 48, 72, 96, and 120 hours) of exposure to granular NPK fertilizer 04-30-16 on the vigor and germination of Urochloa brizantha cv. Marandu seeds. The experiment was conducted in a completely randomized design with three replication. The fertilizer and seed mixture registered a negative effect on seed moisture content, electrical conductivity, emergence, emergence speed index, and seedling and radicle length as the period of exposure to the fertilizer increased from 3 to 120 hours.

Irrigação por déficit e fertirrigação aumentam o desempenho produtivo da alface cv. Veneranda

“…O uso de nutrientes (NPK) disponibilizado via lâmina de irrigação melhoraram as respostas morfofisiológicas da cultura da alface cultivar veneranda. Isso pode estar relacionado a melhora do metabolismo das plantas que já foi averiguado em sementes, mudas e na colheita em outros estudos (Codognoto, et. al., 2019;Oliveira, et.…”

Slow-release Fertilizer Application on Silk (Falcataria moluccana Miq.) and Rice (Oryza sativa L.) Plant Growth and Yield in Agroforestry System

“…These results show that conventional NPK fertilizer mixed with CS to become CS-NPK SRF is safer for seeds than conventional NPK fertilizer without a chitosan mixture. Codognoto et al (2019) concluded that prolonged exposure of seeds to direct NPK resulted in decreased seed germination, reduced shoot and root length, and increased seed mortality.…”