Abstract
The use of yeast as a bio-fertilizer in agriculture has taken a considerable attention because of their bioactivity and safety for human and the environment. The current study aimed to evaluate the effect of potassium fertilization and two yeast strains on maize productivity grown on salt affected soil in Dakahlia Governorate to find out their beneficial effect as biofertilizer. Two years field experiment were conducted to investigate the effect of potassium application levels (0, 30. 40 and 50 kg K/fed.) combined with or without Saccharomyces cerevisiae or Rhodotorula mucilaginosa on the maize yields, potassium use efficiency, NPK uptake and soil fertility after harvest. In addition, total microbial and yeast counts as well as dehydrogenase activity after 50 and 80 days from planting were studied. The results showed that application of potassium with yeast significantly increased maize grain and stalks yield, 1000-grain weight and weight of ear/plant. The application of potassium enhanced K % in maize stalk and grain and decreased Na %, as well as markedly raised the maize salt tolerance via increasing the K/Na ratio, especially with the highest rate of potassium fertilization. Potassium use efficiency and potassium uptake were markedly increased with the application of potassium combined with yeast. The highest K- utilization rate 84.93 % was recorded with the treatment consists of 30 kg K/fed + Rhodotorula mucilaginosa. Potassium fertilization positively affects the nitrogen and phosphorus uptake in both studied seasons. Soil salinity and fertility were slightly increased with the application of potassium fertilizers. The highest values of total microbial and yeast counts as well as the dehydrogenase activity were observed with the low levels of K fertilizer associated with Rhodotorula mucilaginosa. So it could be recommended to apply the low levels of potassium together with the yeast strains as a biofertilizer to overcome the salt stress of maize plants.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
Potassium with yeast significantly increased maize grain and stalk yields and yield components.
- Treatment
- potassium with yeaste0
- Outcome
- maize grain and stalks yield, 1000-grain weight and weight of ear/plante0
- Direction
- increasede0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of potassium with yeast significantly increased maize grain and stalks yield, 1000-grain weight and weight of ear/plant.”
t0“MAIZE PLANTS”
Claim · model-written summary
Potassium enhanced stalk and grain K percentage.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of potassium enhanced K % in maize stalk and grain and decreased Na %”
Claim · model-written summary
Potassium decreased maize sodium percentage.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of potassium enhanced K % in maize stalk and grain and decreased Na %”
Claim · model-written summary
Potassium raised maize salt tolerance through increased K/Na ratio.
- Treatment
- highest rate of potassium fertilizatione0
- Outcome
- maize salt tolerancee0
- Direction
- raisede0
- Qualifier
- increasing the K/Na ratioe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“markedly raised the maize salt tolerance via increasing the K/Na ratio, especially with the highest rate of potassium fertilization.”
Claim · model-written summary
Potassium with yeast increased potassium use efficiency and uptake.
- Treatment
- potassium combined with yeaste0
- Outcome
- Potassium use efficiency and potassium uptakee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potassium use efficiency and potassium uptake were markedly increased with the application of potassium combined with yeast.”
t0“MAIZE PLANTS”
Claim · model-written summary
30 kg K/fed plus Rhodotorula mucilaginosa gave the highest potassium utilization rate of 84.93%.
- Treatment
- 30 kg K/fed + Rhodotorula mucilaginosae0
- Interactor
- Rhodotorula mucilaginosa
Rhodotorula mucilaginosae0symbiont - Outcome
- K- utilization ratee0
- Direction
- higheste0
- Value
- 84.93 %e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest K- utilization rate 84.93 % was recorded with the treatment consists of 30 kg K/fed + Rhodotorula mucilaginosa.”
t0“MAIZE PLANTS”
Claim · model-written summary
Potassium fertilization increased nitrogen and phosphorus uptake.
- Treatment
- Potassium fertilizatione0
- Outcome
- nitrogen and phosphorus uptakee0
- Direction
- positively affectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potassium fertilization positively affects the nitrogen and phosphorus uptake in both studied seasons.”
t0“MAIZE PLANTS”
Claim · model-written summary
Potassium fertilizers slightly increased soil salinity and fertility.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil salinity and fertility were slightly increased with the application of potassium fertilizers.”
t0“MAIZE PLANTS”
Claim · model-written summary
Low potassium with Rhodotorula mucilaginosa gave the highest microbial counts and dehydrogenase activity.
- Treatment
- low levels of K fertilizer associated with Rhodotorula mucilaginosae0
- Interactor
- Rhodotorula mucilaginosaRhodotorula mucilaginosae0symbiont
- Outcome
- total microbial and yeast counts as well as the dehydrogenase activitye0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest values of total microbial and yeast counts as well as the dehydrogenase activity were observed with the low levels of K fertilizer associated with Rhodotorula mucilaginosa.”
t0“MAIZE PLANTS”
Claim · model-written summary
The authors recommend low potassium levels with yeast to address maize salt stress.
- Outcome
- apply the low levels of potassium together with the yeast strains as a biofertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“recommended to apply the low levels of potassium together with the yeast strains as a biofertilizer to overcome the salt stress of maize plants.”
The same questions in other papers
potassium · nutrient: efficiency · Zea mays (maize)Positive and negative results
5 papers in the same direction as this paper · 2 in the opposite direction
- positive
- no effect
- negative
4 papers more in this group
See all 8 papers →potassium · yield · Zea mays (maize)Positive and negative results
290 papers in the same direction as this paper · 28 in the opposite direction · 1 reporting no difference from an alternative
- positive
- no effect
- negative
316 papers more in this group
See all 320 papers →fertilization · nutrient: content · Zea mays (maize)Positive and negative results
1,025 papers in the same direction as this paper · 127 in the opposite direction · 11 reporting no difference from an alternative
- positive
- positive
- negative
1,160 papers more in this group
See all 1,164 papers →potassium · organism · Zea mays (maize)Results agree
8 papers in the same direction as this paper
- positive
- positive
- positive
5 papers more in this group
See all 9 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.