Nutritional Requirement of Sugarcane Cultivars

Abstract

Sugarcane produces a large amount of biomass, extracts and accumulates high amounts of nutrients. In the literature the nutritional requirements for most cultivated varieties in the past are found, however there is little information on the new varieties currently planted. The objective of this study was to evaluate the nutritional requirement of four sugarcane varieties, currently very planted, in the cycles of plant-cane, first and second ratoon. The study was installed in a Yellow Oxisol. The experimental design was a randomized block design, with five replications, and four treatments: RB867515, RB92579, SP813250 and VAT90212. During maturation of the cane, in the three evaluation cycles, the productivity of natural biomass and the nutritional requirement of macronutrients of the varieties were determined. It was evidenced that the cultivars of sugarcane are of high productive potential and resemble the accumulation of biomass, observing a yield of 158, 128 and 107 t ha-1 in the cycles of plant-cane, first and second ratoon. Regarding the nutritional requirement, the varieties did not differ among them and expressed the following order of need in the plant-cane K > N > Ca > Mg > S > P, in the first and second ratoon, the sequence observed was K > N > Ca > S > Mg > P.

Fertilizer source and application method influence sugarcane production and nutritional status

“…For the site harvested during the late period of the sugarcane harvest season in the two crop seasons, the relative accumulation ranged from 1.23 to 1.98 kg N Mg −1 stalk, from 0.12 to 0.24 kg P Mg −1 stalk, and from 1.40 to 2.02 kg K Mg −1 stalk. These values of relative accumulation were similar to those observed in other sugarcane cultivars for N, P, and K ( Silva et al., 2018 ; Castro et al., 2022 ), demonstrating that the accumulation of the macronutrients N, P, and K by the crop is similar to either liquid or solid fertilization regardless of the application method (i.e., above the straw [ASt], under the straw [USt], and incorporated into the soil in the sugarcane row [SI]).…”

Nutritional status of three sugarcane varieties grown in the northeast region of Brazil

“…The type of soil and plant variety also influences leaf nutrient contents (Faroni et al, 2009;Silva et al, 2018b). Therefore, correctly interpreting the results of leaf analysis leads to more efficient use of inputs.…”