Responses of different fragments of lowland ecotype Cyperus rotundus L.) to early and late flooding [manuscript]
Date
2019
Authors
Raymart John C. Queliza
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Abstract
C. rotundus L. is one of the most dominant weeds in many field and vegetable crops due to its unique biological and physiological properties. Mainly, C. rotundus thrives well under upland condition however some report say C. rotundus able to adapt such flooded condition. An experiment was conducted from March to June 2019 at the screen house of Crop Protection Division, Philippine Rice Research Institute, Maligaya, Science City of Muñoz, Nueva Ecija to (a) determine the responses of different fragments of Lowland ecotype C. rotundus on early and late flooding and (b) determined the best timing of flooding that can inhibit the growth and succession of lowland ecotype C. rotundus.
Tubers of lowland ecotype were collected from Aliaga Nueva Ecija. Collected tubers were cut into fragments (B1-whole tuber, B2-1/2 tuber, B3-1/3 tuber, B4- 1/4 tuber) then pre-germinate to Philippine Rice Research Institute, Maligaya, Science City of Muñoz, Nueva Ecija. The experiment was establish following a two-way factorial Randomized Complete Block Design with 3 replications having early and late flooding. Growth parameters of C. rotundus were gathered and analyzed through analysis of variance using STAR 2013. Results showed that the main effect of flooding significantly affected the growth and development of C. rotundus. Early flooding showed suppression effect than late flooding. All fragments did not produced shoots when flooded all throughout from 0 to 50 DAP while all fragments can produced under saturated condition. The results of this study proved that the early the flooding is given, succession of C. rotundus will lessen.