Fertilizer source and application method influence sugarcane production and nutritional status

Abstract

IntroductionThe contrasting weather conditions throughout the sugarcane harvest period in south-central Brazil (April to November) influence fertilization management in sugarcane ratoon.MethodsThrough field studies carried out over two cropping seasons, we aimed to compare the performance of sugarcane at sites harvested in the early and late periods of the harvest season as a function of fertilizer sources associated with application methods. The design used in each site was a randomized block in a 2 x 3 factorial scheme; the first factor consisted of fertilizer sources (solid and liquid), and the second factor consisted of application methods (above the straw, under the straw, and incorporated into the middle of the sugarcane row).ResultsThe fertilizer source and application method interacted at the site harvested in the early period of the sugarcane harvest season. Overall, the highest sugarcane stalk and sugar yields at this site were obtained with the incorporated application applying liquid fertilizer and under straw applying solid fertilizer, with increments of up to 33%. For the site harvested in the late period of the sugarcane harvest season, the liquid fertilizer promoted a 25% higher sugarcane stalk yield compared to the solid fertilizer in the crop season with low rainfall in the spring, while in the crop season with normal rainfall, there were no differences between treatments.DiscussionThis demonstrates the importance of defining fertilization management in sugarcane as a function of harvest time, thereby promoting greater sustainability in the production system

Molecular cloning and functional analysis of ScHAK10 gene promoter from sugarcane (Saccharum officinarum L.)

“…Overexpression of these transcription factors can enhance the growth of Arabidopsis thaliana roots under low potassium stress (Hong et al, 2013). These studies demonstrated that the enhancing expression regulation of potassium transporter genes can increase the growth tolerance of plants during low potassium conditions (Castro et al, 2023).…”

“…Therefore, the key to achieving high sugarcane yield maintaining su cient nutrient supply. An adequate nutrient supply is crucial for high sugarcane yield (Li et al, 2011;Herrera et al, 2022;Castro et al, 2023). The HAK potassium transporter gene family is an important K + transporter that plays a major role in the absorption and transport of potassium in sugarcane.…”

“…al., 2002;Castro et al, 2023). The GhHAK5 gene expressed under low potassium conditions in cotton plants.…”

Molecular cloning and functional analysis of ScHAK10 gene promoter from sugarcane (Saccharum officinarum L.)

“…Therefore, the key to achieving high sugarcane yield maintaining su cient nutrient supply. An adequate nutrient supply is crucial for high sugarcane yield [1][2][3]. The HAK potassium transporter gene family is an important K + transporter that plays a major role in the absorption and transport of potassium in sugarcane.…”

Characterization of Sugarcane QTLs for Tillering and stalks Quality through a Two-Way Pseudo-Testcross

“…Later integration with the BIN function of GACD software led to the selection of fewer simplex markers (459) than existing sugarcane markers (da Silva et al, 1995; LIU et al, 2010; Wang et al, 2022),and the total length of the genetic map established using high-quality simplex markers was 1578.04cM.The growth and development processes of sugarcane are affected by genotype, ecological environment, and other factors. To obtain phenotypic data as accurately as possible, eld management measures such as fertilization(Castro et al, 2023) and irrigation(Brauman & Viart, 2016) should be planned and implemented, and multi-environment planting is necessary for the experiment. On this basis, data on the growth of plants, tillers, and effective stalk phenotypes at the two test sites were collected over two years.…”