Abstract
The objective of this study was to evaluate the effects of the application of irrigation levels in the productivity and water use efficiency, in the soil and climatic conditions of the municipality of Colinas do Tocantins, located in the Mid-Northern region of the State of Tocantins. The cowpea cultivation system was submitted to the application of five irrigation blades, based on ET0—Reference Evapotranspiration: Blade 0% of ET0, Blade 50% of ET0, Blade 75% of ET0, Blade 100% of ET0 and Blade 125% of ET0 (B0, B50, B75, B100 and B125% of ET0). The descriptive statistics were used to analyze the data, applying the 95% confidence interval to discriminate the differences between the treatments, since the replicates were constituted of 100 plants harvested at random within the plot for each treatment and no design method was performed. A significant effect of the different levels was found on all evaluated components, with the exception of the length of the pod, which did not differ in the irrigation levels. The increase in irrigation contributed to the increase of the results of the components that compete directly for higher productivity, such as number of pods per plant, weight of pods and number of seeds per pod. In these results, it was found that higher irrigation levels confer higher yields. Water-use efficiency—WUE behaved as per productivity trend, that is, it decreased with the reduction of irrigation levels.
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Claims 4
Claim · model-written summary
Increased irrigation increased the number of pods per plant, pod weight and number of seeds per pod in cowpea.
- Taxon
- cowpea
Vigna unguiculatae1 - Treatment
- increase in irrigatione4
- Outcome
- number of pods per plant, weight of pods and number of seeds per pode4
- Direction
- increasee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The cowpea cultivation system was submitted to the application of five irrigation blades”
e2“A significant effect of the different levels was found on all evaluated components”
e4“The increase in irrigation contributed to the increase of the results of the components that compete directly for higher productivity, such as number of pods per plant, weight of pods and number of seeds per pod”
Claim · model-written summary
Pod length did not differ among the irrigation levels in cowpea.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- irrigation levelse5
- Outcome
- length of the pode5
- Direction
- did not differe5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The cowpea cultivation system was submitted to the application of five irrigation blades”
e5“with the exception of the length of the pod, which did not differ in the irrigation levels”
Claim · model-written summary
Water-use efficiency of cowpea decreased with reduction of irrigation levels.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- reduction of irrigation levelse6
- Outcome
- Water-use efficiencye6
- Direction
- decreasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The cowpea cultivation system was submitted to the application of five irrigation blades”
e6“Water-use efficiency—WUE behaved as per productivity trend, that is, it decreased with the reduction of irrigation levels”
Claim · model-written summary
Higher irrigation levels conferred higher cowpea yields.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- higher irrigation levelse3
- Outcome
- yieldse3
- Direction
- highere3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The cowpea cultivation system was submitted to the application of five irrigation blades”
e3“In these results, it was found that higher irrigation levels confer higher yields”
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