Abstract
In order to achieve good yields and profitability from ginger crops, the water supply must be adequate. However, there are few studies available which have evaluated the adequate water supply to this vegetable. The objective of this study was to evaluate the effect of different irrigation depths on the development and productivity of ginger plants. The research was conducted at the "Sítio Schmidt" farm located in the municipality of Santa Maria de Jetibá, in the central mountainous region of Espírito Santo State, Brazil. The experimental design was a randomized block design with four replications, each experimental unit consisting of three rows at a spacing of 0.90 m and 0.10 m between plants of two meters extension, totaling 20 experimental units. The treatments consisted of application of five irrigation depths equivalent to: 50%, 75%, 100%, 125% and 150% of crop evapotranspiration (ETc). We evaluated the number of sprouts; average mass of export quality rhizome; the production of export, small and total rhizomes (t ha-1); and water use efficiency. The total water depth applied in the range 1100–1200 mm per cycle favors the development of ginger plants, providing the highest yields of total and export rhizomes, the greatest average mass of export quality rhizome and lowest production of small rhizomes.
Highlights
Ginger (Zingiber officinale Roscoe) belongs to the Zingiberaceae family (RAVINDRAN; NIRMALBABU; SHIVA, 2005), and is notable for its medicinal and aromatic properties, and its importance as a spice in many parts of the world (ZAMBRANO-BLANCO, 2015)
In Espírito Santo State, ginger was introduced on a commercial scale a little more than 10 years ago as an alternative source of income for family-based producers, and from on the state came to occupy a prominent position in the national scenario (ESPÍNDULA JÚNIOR et al, 2014)
The research was conducted at the "Sítio Schmidt" farm located in the municipality of Santa Maria de Jetibá, in the central mountainous region of Espírito Santo State, Brazil, from September 2014 to September 2015
Summary
Ginger (Zingiber officinale Roscoe) belongs to the Zingiberaceae family (RAVINDRAN; NIRMALBABU; SHIVA, 2005), and is notable for its medicinal and aromatic properties, and its importance as a spice in many parts of the world (ZAMBRANO-BLANCO, 2015). The cultivation of ginger was introduced in Brazil soon after the beginning of European colonization. In Espírito Santo State, ginger was introduced on a commercial scale a little more than 10 years ago as an alternative source of income for family-based producers, and from on the state came to occupy a prominent position in the national scenario (ESPÍNDULA JÚNIOR et al, 2014). Espírito Santo stands out as the largest producer and exporter of ginger, contributing to 60% of national production and 80% of exports
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