Abdul-Ganiyu et al
Greener Journal of Agricultural Sciences, Vol. 5 (5), pp. 159-166, September 2015.
Manuscript Number: 020315028
Effect of Different Water Application Schedules on the Growth and Yield of Loose leaf Lettuce (Lactuca sativa var. crispa) at Golinga Irrigation Scheme in the Tolon District of Northern Region, Ghana
*Abdul-Ganiyu, S., Alhassan A.L. and Adongo, T.A.
Department of Agricultural Mechanization and Irrigation Technology, Faculty of Agriculture, University for Development Studies, Box TL 1882, Tamale, Ghana
To assess the effect of different water application schedules on the growth and yield of lettuce (Lactuca sativa var. crispa), a field experiment was carried out at Golinga Irrigation Site. Four treatments were laid out in a Randomized Complete Block Design in four replications. The treatments were; TRT1 (adlib application by farmers), TRT2 (100% of the daily ETc applied only in the morning at each growth stage), TRT3 (100% of the daily ETc applied only in the evening at each growth stage) and TRT4 (100% ETc split: 50% of the daily ETc applied in the morning and the other 50% applied in the evening at each growth stage). The daily crop water requirement (ETc) of the crop was calculated for the four stages of growth using the CROPWAT software bearing in mind the area of each bed (16m2). The data was analyzed using the Genstat Software. The results revealed that plants grown in the TRT4 grew healthier and recorded the highest plant height (23.3cm), number of leaves (9), leaf spread (25.03cm), leaf area index (5.25), and fresh matter weight of leaf (43.0g), yield (28.3t/ha) and water productivity (7.2kg/m3). Plants grown in TRT3 recorded the least values for plant height (19.8cm), number of leaves (7), leaf spread (20.9cm), leaf area index (4.1), fresh matter weight of leaf (30.7g), yield (13.9t/ha) and water productivity (3.5kg/m3). It is recommended that interested lettuce farmers could adopt TRT4 water application schedule since it gave the highest values in all the parameters used for data collection.
Keywords: Different water application schedules, yield of lettuce, crop evapotranspiration (ETc), crop water productivity
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