Organomineral Fertilizer as Source of P and K for Sugarcane

Abstract

Sugarcane (Saccharum spp) crop has high social, economic and environmental importance for several regions throughout the world. However, the increasing demand for efficiency and optimization of agricultural resources generates uncertainties regarding high mineral fertilizer consumption. Thereby, organomineral fertilizers are to reduce the conventional sources consumption. Thus, this study was carried out to evaluate the agronomic and economic sugarcane performancies and the residual effect of p and K under mineral and organomineral fertilization. Growth and technological parameters, leaf and soil nutrients concentration in surface and subsurface layers were analyzed from sugarcane planting (plant cane) until the first ratoon. Agronomic and economic sugarcane efficiency were evaluated. At the first ratoon, resin-extractable P provided by mineral and organomineral fertilizers were, respectively, 15 and 11 mg kg −1 in the 0.0-0.2 m, and 28 and 31 mg kg −1 in 0.2-0.4 m layer. However, exchangeable K in the 0.0-0.2 m layer was 1.88 and 1.58 mmol c kg −1 for mineral and organomineral fertilizers, respectively. The yield gains over the control reached with mineral and organomineral fertilizers were, respectively, 10.99 and 17 Mg ha −1 at the lowest fertilizer rate; and 29.25 and 61.3 Mg ha −1 at the highest fertilizer rate. Agronomic and economic organomineral fertilizer efficiencies are more pronounced in plant cane. Summing two harvests, the organomineral is 7% more profitable than mineral fertilizer.

Metagenomic Analysis Exploring Taxonomic and Functional Diversity of Soil Microbial Communities in Sugarcane Fields Applied with Organic Fertilizer

“…Sugarcane ( Saccharum officinarum L.; Poaceae) is the world's most important sugar and energy crop. Sugarcane plants are very tall, have a long production period, consume a lot of nutrients, and require a large amount of fertilizer as well as large amount of irrigation [ 1 – 3 ]. Balanced soil fertility plays a vital role in the growth of sugarcane.…”

Biometric responses of sugarcane under high doses of vinasse

“…For being the predominant mineral in vinasse, potassium alone does not affect the plant height because, according to Flores et al (2012), the crop responded positively to the increased supply of mineral sources of K 2 O. Crusciol et al (2020) verified that organomineral sources of K contributed to the development of sugarcane plant height.…”

Adubação Organomineral E Mineral E Resposta Da Soja Em Terras Baixas / Organomineral and Mineral Fertilization and Soybean Response in Lowlands

“…Entretanto, em muitos casos a utilização de fontes orgânicas em áreas extensas não é viável pelo reduzido teor de nutrientes. Considerando este fator, alguns agricultores e fabricantes têm adicionado fertilizantes minerais concentrados aos fertilizantes orgânicos para aumento do teor de nutrientes, resultando nos fertilizantes organominerais (FOM) (CRUSCIOL et al, 2020).…”