Results of different alternatives of surface irrigation technician management in the red Maradol papaya crop with extra dense plantation distance.
Perez H. R., Jimenez E. E., Montero S. J. L., Sarmiento G. O. y Guzman V. J.
Research Institute of Agricultural Engineering, Havana, Cuba
Agricultural Technical Sciences Magazine Volume 19 Nº 3 San José de las Lajas, July. -September. 2010, Cuba
The objective of this work was the realization of a study for different irrigation management in the surface irrigation technician, means of field test in Papaya crop variety Red Maradol. The flow of better behaviour for the continuous flow irrigation with the open furrows variant of large 130 m , was 1,56 L/s, with application efficiency of 61,8%, storage efficiency of 97% and distribution 82,6%. The lost for superficial glide and deep percolation were of 25 % and 13 % of the applied water volume, respectively. For the irrigation variant for closed furrows with this flow, increments of the application and distribution efficiencies were obtained, of 3,2% and 11,4% respectively, as well as, an additional total saving of the water and fuel resources of 232,8 pesos/year-, overcoming to the irrigation by opened furrows. The intermittent irrigation variant or for pulses with 4 cycles of variable times, allowed to achieve an application efficiency of 85%, with a total saving of water and fuel of 911.78 pesos /year, allowing a decrease of 24,37% of the total volume of water applied per produced ton. The furrows were built, one for the center lines between plants and other on both edges of the wide street. delivery of water to the furrows was performed by means of flexible pipes with regulate valves. The irrigation management alternatives were: irrigation with continuous water flow in open furrows and closed furrows, as well as irrigation with intermittent water flow or pulse with varying times cycles.