Volume No. 2 Issue No.: 4 Page No.: 513-522 April-June 2008

 

YIELD, IRRIGATION PRODUCTION EFFICIENCY AND ECONOMIC RETURN OF BROCCOLI (Brassica oleracea Var. Italica) UNDER DIFFERENT IRRIGATION METHODS AND SCHEDULES

 

J. Lordwin Girish Kumar*1 and Tayal senseba2

1. Department of Water Resources Engineering, Faculty of Engineering, Bahir Dar University, Bahir Dar, (Ethiopia)
2. Department of Soil, Water, Land Engineering and Management, Agricultural Institute - Deemed University, Allahabad, (India)

 

Received on : September 17, 2007

 

ABSTRACT

 

Field experiment was conducted at the Irrigation Research Farm of Allahabad Agricultural Institute-Deemed University, Allahabad (India), during the winter crop growing season (November to March) of 2005-2006 on clay loam soil in order to evaluate the effect of irrigation methods and irrigation schedules on marketable yield, irrigation production efficiency and economic return of broccoli (Brassica oleracea Var.Italica). The irrigation was applied when sum of daily pan evaporation data from United States Weather Bureau (USWB) class- A-open pan reach approximately to predetermine value of 16.3 mm. Irrigation at 150 percentage of pan evaporation replenishment resulted in higher flowers weight, marketable flower yield and irrigation production efficiency and it decreased with increase in irrigation level. The drip irrigation methods resulted in slightly higher marketable yield of primary flowers and irrigation production efficiency as compared with micro sprinkler methods, whereas surface irrigation methods gave considerably lower yield of primary and secondary flowers and irrigation production efficiency. The irrigation at 150 percentage pan evaporation replenishment resulted in higher gross return, net return and benefit cost ratio. The micro sprinkler method resulted in higher gross return, net return and benefit cost ratio followed by drip and surface irrigation methods. The seasonal water applied/irrigation level and marketable yield of broccoli exhibited a strong quadratic relationship which in turn can be used for allocating limited water resource within the crop under different irrigation methods. The overall results clearly indicate that the micro irrigation system is highly economical for broccoli in this region.

 

Keywords : Broccoli, Irrigation production efficiency, Drip, Micro-sprinkler.

 

 

BACK