Boro
El boro aumenta los niveles de azúcar en el fruto. En estos ensayos, particularmente con naranjas dulces, hubo casi un 50% de aumento en SST por haber aplicado 0.6%.
Sólidos solubles totales (SST) en cítricos
El contenido de SST en los frutos se obtiene normalmente evaluando los grados Brix del fruto. El SST o contenido de azúcar mide e incluye los carbohidratos, ácidos orgánicos, proteínas, grasas y minerales del fruto. Eso representa 10-20% del peso fresco del fruto y aumenta con la maduración para producir un fruto menos ácido y más dulce. Es importante que el productor tenga el objetivo de generar un equilibrio aceptable de SST y la acidez del fruto. (Ver relación SST/Acidez).
Potasio y nitrógeno tiene un efecto relativamente menor en el SST. No obstante, boro, hierro, manganeso y zinc aumentan SST. Molíbdeno, por otro lado, induce una reducción de SST.
Hierro
El uso de hierro aumenta efectivamente los niveles de azúcar en el fruto. Ensayos muestran aumentos donde el hierro era deficiente en naranjas Pineapple, Washington Navel y mandarinas Balady.
Manganeso y zinc
Manganeso, frecuentemente asociado con zinc, aumenta el contenido de SST en el fruto. Eso también puede ayudar a mejorar el contenido de ácido ascórbico en el fruto. Como resultado, el manganeso tiene poca influencia sobre la relación SST/Acidez, y esa combinación de mejoras en el contenido de azúcar y acidez produce un fruto más deseable para el consumidor.
Fertilizantes de Yara recomendados para cítricos
| Leaf Analysis All Citrus Fruits | |||||
|---|---|---|---|---|---|
| Deficient | Marginal | Adequate | High | Toxic or Excessive | |
| N (%) | <2.2 | 2.2 - 2.3 | 2.4 - 2.6 | ||
| P (%) | <0.09 | 0.09 - 0.11 | 0.12 - 0.16 | 0.17 - 0.25 | >0.25 |
| K (%) | <0.04 | 0.04 - 0.69 | 0.7 - 1.5 | 1.6 - 2.3 | >2.3 |
| S (%) | <0.14 | 0.14 - 0.2 | 0.21 - 0.4 | 0.41 - 0.5 | >0.5 |
| Ca (%) | <1.6 | 1.6 - 2.9 | 3.0 - 6.0 | >7.0 | |
| Mg (%) | <0.16 | 0.16 - 0.25 | 0.26 - 0.6 | 0.7 - 1.2 | >1.2 |
| Na (%) | <0.16 | 0.17 - 0.25 | >0.25 | ||
| Cl (%) | <0.3 | 0.4 - 0.7 | >0.7 | ||
| Cu (mg/kg) | <3 | 3.0 - 5.0 | 6.0 - 10.0 | 11.0 - 15.0 | >15.0 |
| Zn (mg/kg) | <16 | 16 - 24 | 25 - 80 | 90 - 300 | >300 |
| Mn (mg/kg) | <16 | 16 - 24 | 25 - 80 | 90 - 300 | >300 |
| Fe (mg/kg) | <36 | 36 - 60 | 61 - 120 | 121 - 200 | >200 |
| B (mg/kg) | <21 | 21 - 30 | 31 - 100 | 101 - 260 | >260 |
| Mo (mg/kg) | <0.06 | 0.06 - 0.09 | 0.1 - 3.0 | 3.0 - 100 | >100 |
| Samples taken from 5 - 7 month old, healthy leaves, from the middle of non-fruiting, spring extension growth. | Ref: Plant Analysis An Interpretation Manual - Second Edition by Reuter and Robinson | ||||
YaraVita®
Asegura que las muestras de frutos/hojas tengan suficiente boro, hierro, manganeso y zinc para mantener altos contenidos de SST en el frito y usar YaraVita via foliar para corregir cualquier desequilibrio.
&filetype=.JPEG)
YaraVita MANGAZIN
YaraVita Mangazin is a highly concentrated flowable formulation containing manganese and zinc in significantly higher concentrations than most liquid solutions and liquid chelates.
The fluid formulation makes it easy to measure, pour and mix the product in the spray tank, while giving the highest nutrient content.
The product is specifically formulated to provide maximum crop safety. This helps to ensure that application will not cause damage to the crop which can reduce it's market value.
The purity of raw materials selected for this product makes it safe for application to the crop and helps ensure that the harvested produce will not be rejected at any point in the supply chain.
A controlled particle size gives quick uptake and long lasting effect. This reduces the need for repeat applications saving both time and money.
A broad tankmixability makes it easy to co-apply the products with agrochemicals, saving both time and money. Just as important, free access to Tankmix information online or via smart phones makes it quick and easy to check whether products can be co-applied.
YaraVita POWERBOR Ca
YaraVita Powerbor Ca is a highly concentrated flowable product containing significant levels of calcium, boron and zinc.
The fluid formulation makes it easy to measure, pour and mix the product in the spray tank, while giving the highest nutrient content.
The product is specifically formulated to provide maximum crop safety. This helps to ensure that application will not cause damage to the crop which can reduce it's market value.
The purity of raw materials selected for this product makes it safe for application to the crop and helps ensure that the harvested produce will not be rejected at any point in the supply chain.
A controlled particle size gives quick uptake and long lasting effect. This reduces the need for repeat applications saving both time and money.
A broad tankmixability makes it easy to co-apply the products with agrochemicals, saving both time and money. Just as important, free access to Tankmix information online or via smart phones makes it quick and easy to check whether products can be co-applied.
Fertilizantes de Yara recomendados para cítricos
