Abstract
Abstract: The objective of this work was to evaluate the efficiency of molten and ground alkaline potassium-silicate rocks (K1) and of ground phonolite rock (K2) as sources of potassium for upland rice (Oryza sativa) and common bean (Phaseolus vulgaris) crops, in comparison with the traditional source (KCl). Two experiments - one with each crop - were conducted on a Typic Haplorthox in a randomized complete block design with four replicates. The treatments consisted of three sources (KCl, K1, and K2) and four rates (0, 20, 40, and 80 kg ha-1 K2O) of K. Regardless of the used source, K fertilization increased the leaf K content and grain yield of the upland rice and common bean crops. The agronomic efficiency index (AEI) of the alternative K sources varied according to the crop. For upland rice, the AEI of K2 was 8% higher than that of KCl at the recommended K rate, but similar at the highest rate. For common bean, the AEI values of K1 were close to that of KCl at the rates of 40 and 80 kg ha-1 K2O. The alternative sources K1 and K2 supply K and increase the grain yield of common bean and upland rice, respectively, similarly to KCl.
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Claims 9
Claim · model-written summary
Potassium fertilization increased leaf K content of upland rice.
- Taxon
- upland rice
Oryza sativae0 - Treatment
- K fertilizatione0
- Outcome
- leaf K contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Regardless of the used source, K fertilization increased the leaf K content and grain yield of the upland rice and common bean crops”
Claim · model-written summary
Potassium fertilization increased grain yield of upland rice.
- Taxon
- upland riceOryza sativae0
- Treatment
- K fertilizatione0
- Outcome
- grain yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Regardless of the used source, K fertilization increased the leaf K content and grain yield of the upland rice and common bean crops”
Claim · model-written summary
Potassium fertilization increased leaf K content of common bean.
- Taxon
- common bean
Phaseolus vulgarise0 - Treatment
- K fertilizatione0
- Outcome
- leaf K contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Regardless of the used source, K fertilization increased the leaf K content and grain yield of the upland rice and common bean crops”
Claim · model-written summary
Potassium fertilization increased grain yield of common bean.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- K fertilizatione0
- Outcome
- grain yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Regardless of the used source, K fertilization increased the leaf K content and grain yield of the upland rice and common bean crops”
Claim · model-written summary
K2 had an 8% higher agronomic efficiency index than KCl in upland rice at the recommended rate.
- Taxon
- upland riceOryza sativae0
- Treatment
- K2e0
- Outcome
- AEIe0
- Direction
- highere0
- Value
- 8%e0
- Qualifier
- recommended K ratee0
- Comparator
- KCle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For upland rice, the AEI of K2 was 8% higher than that of KCl at the recommended K rate, but similar at the highest rate”
Claim · model-written summary
At the highest rate, K2 and KCl had similar agronomic efficiency in upland rice.
- Taxon
- upland riceOryza sativae0
- Treatment
- K2e0
- Outcome
- AEIe0
- Direction
- similare0
- Qualifier
- highest ratee0
- Comparator
- KCle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For upland rice, the AEI of K2 was 8% higher than that of KCl at the recommended K rate, but similar at the highest rate”
Claim · model-written summary
K1 agronomic efficiency was close to KCl in common bean at 40 and 80 kg ha-1 K2O.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- K1e0
- Outcome
- AEI valuese0
- Direction
- close toe0
- Qualifier
- at the rates of 40 and 80 kg ha-1 K2Oe0
- Comparator
- KCle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For common bean, the AEI values of K1 were close to that of KCl at the rates of 40 and 80 kg ha-1 K2O”
Claim · model-written summary
K1 supplied potassium and increased common bean grain yield similarly to KCl.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- K1e0
- Outcome
- grain yielde0
- Direction
- increasee0
- Comparator
- KCle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The alternative sources K1 and K2 supply K and increase the grain yield of common bean and upland rice, respectively, similarly to KCl”
Claim · model-written summary
K2 supplied potassium and increased upland rice grain yield similarly to KCl.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The alternative sources K1 and K2 supply K and increase the grain yield of common bean and upland rice, respectively, similarly to KCl”
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