Assessment of chickpea returns in direct combine harvesting.
1988
Birbari W.A.
An experiment was conducted at ICARDA in 1986 to test the effect of several experimental combine harvester settings on chickpea returns. Two genotypes were tested: ILC 482 and ILC 3279. The settings on the harvester included three forward speeds (f1=1.4 Kph, f2=2.0 Kph, and f3=2.6 Kph), three concave clearances (c1=7.5 mm, c2=8.5 mm, and c3=10.5 mm for ILC 482 variety and c1=7.0 mm, c2=8.0 mm, and c3=9.5 mm for ILC 3279 variety), and two blower capacities (b1:strong and b2:weak). The experimental design applied in this experiment was the Generalized Randomized Complete Block Design (GRCBD) with multiple observations per treatment. The two genotypes were considered as the blocks and all the treatment combinations were applied, replicated four times. Samples obtained from the field were analyzed as for their total weight, whole grains, broken grains, and unthreshed pods content. Losses were analyzed as for their total weight. Statistical analysis showed the forward speed to be highly significant for all parameters measured with little significance, if any, from the other treatments and their combinations as well. The block effect (varieties) was also highly significant for all sample parameters measured in the experiment.
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