Selecting Soil Salinity Layer that Better Correlates with Sugarcane Recoverable Sugar Yield

  • Sergio Valdivia Vega Universidad Privada Antenor Orrego, Trujillo, Perú. Calle J.J. Ganoza 166 Urb. California, Víctor Larco, Trujillo, Perú
  • Jorge Pinna Cabrejos Universidad Privada Antenor Orrego, Trujillo, Perú. Calle J.J. Ganoza 166 Urb. California, Víctor Larco, Trujillo, Perú
  • Sergio Valdivia Salazar Palma del Espino, Tocache, Perú
Keywords: Saccharum spp., soil salinity, recoverable sugar yield

Abstract

The objective of this work was to find out which soil salinity layer correlated better with the recoverable sugar yield. The present study was made at Zapote field, located at Tumán enterprise, in Peruvian northern coast, Lambayeque Department, Peru. The soil (salinity 2 to 8 dS m-1 ) was planted with sugarcane (Saccharum spp.) H32-8560 cultivar on 105 plots harvested at five different ages, fertilized with 5 N doses and a control without fertilization. Lineal correlations between sugar yield and salinity, expressed as Electrical Conductivity of saturation extract (CEe), of different soil layers (0-30 cm, 30-60, 60-90, mean 0-60, mean 0-90, higher salty layer 0-60, and less salty layer 0-60 cm) were calculated. Moreover, sugar yield was correlated with ten arithmetical and pondered means of salinity measured before planting and after harvesting. Higher correlation was found for salinity measures before planting than with measures after harvesting. The highest correlations with sugar yields utilizing salinity measures before planting, corresponded with mean 0-60 cm salinity layer, with R values between 0.27 and 0.84 (p<0.01), the less salty layer 0-60 cm, with R between 0.47 (p<0.01) and 0.82 (p<0.01), and the most salty layer 0-60 cm with values from 0.04 to 0.81 (p<0.01). Conclusion: it is enough sampling and analyzing soils just to 60 cm before planting.

Published
2016-06-01
How to Cite
1.
Valdivia Vega S, Pinna Cabrejos J, Valdivia Salazar S. Selecting Soil Salinity Layer that Better Correlates with Sugarcane Recoverable Sugar Yield. Agrociencia Uruguay [Internet]. 1Jun.2016 [cited 29Oct.2020];20(1):17-23. Available from: http://agrocienciauruguay.uy/ojs/index.php/agrociencia/article/view/221
Section
Plant production