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Main Article Content
Evaluation of the planting schedule of soyabean/cassava intercrop systems for optimum yields in the guinea savanna of Nigeria
Abstract
Seven soyabean/cassava intercrop planting schedules were evaluated in a field trial at the National Cereal Research Institute, Badeggi during the 2005 and 2006 cropping seasons with a view to determining the
planting schedule that will result in optimum yields of the component crops. Experimental design was randomized complete block with three replicates. The soyabean variety TGX 1019 2EB was intercropped with
cassava variety 92/0427 using the following planting schedules:- (1) Cassava planted at 28 Days Before Planting Soyabean (28 DBPS) (2) Cassava planted at 14 Days Before Planting Soyabean (14 DBPS) (3)
Soyabean /Cassava Planted Same Day (PSD) (4) Cassava planted at 14 Days After plating Soyabean (14 DAPS) (5) Cassava planted at 28 Days After Planting Soyabean (28 DAPS) (6) Sole cassava (planted on the 30 of June ; recommended planting time in this agro-ecological zone) (7) sole soyabean (planted on the 28 of July; recommended planting time in this agro-ecological zone. Results obtained indicated that the planting of cassava at 28 Days Before Planting Soyabean (i.e. soy+cas 28 DBPS) resulted in the highest cassava yields of 41,700 and 42,182 kg/ha in 2005 and 2006 respectively. These yields were significantly higher (P=0.05) than the cassava yields obtained at the other intercrop treatments in both years. This treatment also resulted in the highest gross yields of the component crops as indicated by the LER in both years.
Keywords: Cassava, Soyabean, Planting Schedule, GrossYields.
