Abstract
Cowpea (Vigna unguiculata L. Walp), a botanical protein source, exhibits resilience in the face of drought-induced stress on rainfed rice fields, especially in dry season crop patterns. Cowpea growth depends on the availability of nutrients in the soil, including potassium (K). In fact, low K availability (exchangeable K is ≤ 0.04 cmol(+) kg-1) is one of the obstacles in rainfed rice fields, especially in increasing crop yields, including cowpea. Therefore, K supplies from various sources are needed to improve soil and cowpea productivity, such as K fertilizer and manure. This study was carried out to determine the response of nutrient management to increase cowpeas’ yield and exchangeable potassium on rainfed rice fields. The field experiment used a randomized block design, with six replications and six fertilizer management treatments, specifically to control composted cattle manure (CCM), Nitrogen Phosphate Fertilizer (NP), CCM+NP, NPK Fertilizer, and CCM+NPK. The parameters observed include plant height, yield components, seed yield, and exchangeable K. Fertilizer management affects the cowpea yield, yield components, K-Uptake, and exchangeable potassium, with the best treatment depicted as CCM+NPK treatment. Compared to the control, CCM by itself and in combination with inorganic fertilizer increases the kernel yield of cowpea by as much as 54-104%, K uptake as much as 40.9-68.2 kg K/ha, and exchangeable K in soil ranging from 37.8-101.3%. It is indicated that the CCM could supply nutrients, including potassium, to overcome potassium deficiency in rainfed rice fields. Furthermore, applying CCM and cultivating cowpeas in rainfed rice fields during the dry season, with water as a limiting factor, is an appropriate option to enlarge the plant yield.
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Claims 5
Claim · model-written summary
Fertilizer management affected cowpea yield and yield components, with CCM+NPK best.
- Taxon
- cowpea
Vigna unguiculatae0 - Treatment
- CCM+NPK treatmente0
- Outcome
- cowpea yield, yield componentse0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilizer management affects the cowpea yield, yield components, K-Uptake, and exchangeable potassium, with the best treatment depicted as CCM+NPK treatment”
Claim · model-written summary
CCM alone or with inorganic fertilizer increased cowpea kernel yield by 54-104% relative to control.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- CCM by itself and in combination with inorganic fertilizere0
- Outcome
- kernel yielde0
- Direction
- increasese0
- Value
- 54-104%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to the control, CCM by itself and in combination with inorganic fertilizer increases the kernel yield of cowpea by as much as 54-104%”
Claim · model-written summary
CCM alone or with inorganic fertilizer increased cowpea K uptake by 40.9-68.2 kg K/ha relative to control.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- CCM by itself and in combination with inorganic fertilizere0
- Outcome
- K uptakee0
- Direction
- increasese0
- Value
- 40.9-68.2 kg K/hae0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to the control, CCM by itself and in combination with inorganic fertilizer increases the kernel yield of cowpea by as much as 54-104%, K uptake as much as 40.9-68.2 kg K/ha”
Claim · model-written summary
CCM alone or with inorganic fertilizer increased exchangeable soil K by 37.8-101.3% relative to control.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- CCM by itself and in combination with inorganic fertilizere0
- Outcome
- exchangeable K in soile0
- Direction
- increasese0
- Value
- 37.8-101.3%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to the control, CCM by itself and in combination with inorganic fertilizer increases the kernel yield of cowpea by as much as 54-104%, K uptake as much as 40.9-68.2 kg K/ha, and exchangeable K in soil ranging from 37.8-101.3%”
Claim · model-written summary
The authors recommend CCM and cowpea cultivation in dry-season rainfed rice fields to raise yield.
- Taxon
- cowpeasVigna unguiculatae0
- Outcome
- applying CCM and cultivating cowpeas in rainfed rice fields during the dry seasone0
- Qualifier
- with water as a limiting factore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“applying CCM and cultivating cowpeas in rainfed rice fields during the dry season, with water as a limiting factor, is an appropriate option to enlarge the plant yield”
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