Productivity and technological quality of sugarcane under fertilization of nitrogen and molybdenum

Abstract

The increase of N fertilization in sugarcane can negatively influence the technological quality of the crop for sugar and alcohol production. The use of Mo in fertilization combined with N can reduce this effect and increase agricultural and sugar yield. The objective of this study was to evaluate the levels of Mo in soil, roots and leaves of sugarcane fertilized with N and Mo, to measure agricultural and sugar productivity and to evaluate quality of the technological attributes for production of sugar and alcohol. Two varieties were cultivated (RB867515 and RB92579) under field conditions, submitted to two doses of N (0 and 60 kg ha-1) and two doses of Mo (0 and 200 g ha-1) both applied to the soil. The source of N used was urea and the source of Mo was sodium molybdate. RB867515 was influenced by Mo and agricultural and sugar productivity increased by 21%. N fertilization did not increase agricultural productivity but reduced the technological quality of sugarcane, and Mo did not change this reduction. It is suggested that N fertilization should be reduced in first crop cycle and Mo fertilization should be stimulated.

Molybdenum Application Regulates Oxidative Stress Tolerance in Winter Wheat Under Different Nitrogen Sources

“…Molybdenum (Mo), an essential microelement, improved the plant growth and oxidative tolerance through increased antioxidant enzyme activities in Chinese cabbage (Zhang et al 2012), ABA productions in wheat (Wu et al 2018;Sun et al 2009), nitrogen assimilation in sugarcane (Santos et al 2018), and iron nutrition in peanut (Su et al 2019). Oxidative tolerance is reflected by the increased activities of antioxidant enzymes which play effective roles to maintain the ROS homeostasis and alleviate the oxidative injuries in plant cells (Hussain et al 2016(Hussain et al , 2020.…”

Soil chemical properties and nutrition of conilon coffee fertilized with molybdenum and nitrogen

“…It is noteworthy that the supply of Mo resulted in a significant increase in the yield of C. canephora (Table 2). Despite the paucity of studies on coffee, recent studies show that Mo's application increased the yield in crops such as sugarcane (Santos et al, 2018b) and corn (Caioni et al, 2016).…”

Respuesta alométrica de dos cultivares de caña para panela a la fertilización foliar en vivero

“…El efecto de la fuente completa con macro y micronutrientes (T2 y T3) sobre las variables alométricas de las plantas de caña empleadas en la presente investigación, se podría explicar por el aporte de elementos como el Fe, Mn, Zn y Mo, ya que, como lo reportan otros autores, estos nutrientes promueven el crecimiento de las plantas de caña de azúcar, por lo que se registra mayor altura y materia seca de raíces (Santos-Cavalcante et al, 2016), mayor macollamiento, entrenudos más largos y tallos más gruesos (Filho et al, 2015). La nutrición integrada empleando un balance adecuado de macro y micronutrientes potencializa las características agronómicas de los cultivares de caña (dos Santos et al, 2018), tal como se observó en este estudio, donde el cultivar CC 93-7711 presentó mayor diámetro de tallo y peso seco de raíces, cualidades que la destacan tanto en campo (Ramírez-Durán et al, 2014b) como en vivero.…”

“…La aplicación de molibdeno (Mo) en caña de azúcar incrementa el rendimiento agrícola y la producción de azúcar en determinados cultivares (dos Santos et al, 2018), debido al estímulo del metabolismo del N y la asimilación de amoníaco por actividad enzimática de la nitrogenasa, nitrato reductasa y glutamina sintetasa (Broadley et al, 2012;Li-Ping et al, 2007).…”