Effect of critical input on groundnut
1989
Paisan Laosuwan | Teerapoung Juntaraniyom (Prince of Songkla Univ., Songkhla (Thailand). Faculty of Natural Resources)
Experiment was conducted in Southern Thailand to evaluate the individual and combined effects of weeding, fungicide, lime and fertilizer on yield, yield components, and other characters of groundnut. Group balanced block and randomized complete block design with treatments arranged in factorial combinations were used. In the group balanced experiment, the significant response of pod yield was found to be due to application of different levels of weeding and fertilizer application. This response was mainly resulted from the increase in the number of pods per plant. Fungicide application and liming exhibited no responsive effect on characters of groundnut except leafspot incidence. In the factorial experiment, it was found that, for pod yield, all the main effects and interactions except lime were significant statistically. In comparison between levels of each factor, only weeding exhibited obvious increase in pod yield, while other factors resulted in a slight increase of the character. If all combined treatments were considered, application of all factors without weeding increased yield about 14 % to 31 %. For the same combinations but with incorporation of weeding, the increase in pod yield was as high as 42 to 134 %. Therefore, weeding is the most important constraint in groundnut production in the area.
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