Abstract
Abstract Glasshouse experiments were conducted at the Newe Ya'ar Research Center in the winter seasons of 1992/93 and 1993/94 to examine a phosphorus/ potassium (PK) fertilizer for cucurbit crops. Monopotassium phosphate [(MKP), KH2PO4] was found to be very effective as a P and K source for cucumber (Cucumis sativus L.) and muskmelon (Cucumis melo L.) plants grown in soilless container conditions. The efficiency of MKP was essentially not different from that of the combination of phosphoric acid (H3PO4) and potassium chloride (KCl) which is widely used in the commercial production of vegetables. Appropriate fertilization of cucumbers with MKP in 1992/93 affected late‐season yield more than early‐season yield. Deficiency of P and K in Gala muskmelon inhibited vegetative growth and decreased yield. The reduced yield resulted from both less fruit‐setting and smaller fruit size. The MKP rates required by cucumber plants in 1993/94 depended primarily on growth medium composition. Generally, plants grown in inert tuff (volcanic gravel) and sandy media responded more significantly to MKP than did those grown in media rich in organic matter. There are at least three reasons for preferring the use of MKP, first it is much safer to handle than is H3PO4, second it is highly soluble and can be easily incorporated in fertigation systems, and third it has a high PK content.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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
MKP was effective as a phosphorus and potassium source for cucumber.
- Taxon
- cucumber (Cucumis sativus L.)
Cucumis sativuse0 - Treatment
- Monopotassium phosphate [(MKP), KH2PO4]e0
- Outcome
- effective as a P and K sourcee0
- Direction
- very effectivee0
- Setting
- soilless container conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Monopotassium phosphate [(MKP), KH2PO4] was found to be very effective as a P and K source for cucumber (Cucumis sativus L.) and muskmelon (Cucumis melo L.) plants grown in soilless container conditions.”
Claim · model-written summary
MKP was effective as a phosphorus and potassium source for muskmelon.
- Taxon
- muskmelon (Cucumis melo L.)
.jpg?width=60)
Cucumis meloe0 - Treatment
- Monopotassium phosphate [(MKP), KH2PO4]e0
- Outcome
- effective as a P and K sourcee0
- Direction
- very effectivee0
- Setting
- soilless container conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Monopotassium phosphate [(MKP), KH2PO4] was found to be very effective as a P and K source for cucumber (Cucumis sativus L.) and muskmelon (Cucumis melo L.) plants grown in soilless container conditions.”
Claim · model-written summary
MKP efficiency was essentially equal to the phosphoric-acid and potassium-chloride combination.
- Taxon
- cucumberCucumis sativust0
- Treatment
- MKPe0
- Outcome
- efficiencye0
- Direction
- not differente0
- Comparator
- combination of phosphoric acid (H3PO4) and potassium chloride (KCl)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The efficiency of MKP was essentially not different from that of the combination of phosphoric acid (H3PO4) and potassium chloride (KCl)”
t0“cucumber”
Claim · model-written summary
MKP affected late-season cucumber yield more than early-season yield.
- Taxon
- cucumbersCucumis sativuse0
- Treatment
- MKPe0
- Outcome
- late‐season yielde0
- Direction
- moree0
- Comparator
- early‐season yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Appropriate fertilization of cucumbers with MKP in 1992/93 affected late‐season yield more than early‐season yield.”
Claim · model-written summary
Phosphorus and potassium deficiency inhibited Gala muskmelon vegetative growth.
- Taxon
- muskmelonCucumis meloe0
- Material
- Galae0
- Treatment
- Deficiency of P and Ke0
- Outcome
- vegetative growthe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Deficiency of P and K in Gala muskmelon inhibited vegetative growth and decreased yield.”
Claim · model-written summary
Phosphorus and potassium deficiency decreased Gala muskmelon yield.
- Taxon
- muskmelonCucumis meloe0
- Material
- Galae0
- Treatment
- Deficiency of P and Ke0
- Outcome
- yielde0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Deficiency of P and K in Gala muskmelon inhibited vegetative growth and decreased yield.”
Claim · model-written summary
Reduced Gala muskmelon yield involved less fruit setting and smaller fruit size.
- Taxon
- muskmelonCucumis melot0
- Organ / stage
- fruit‐setting and smaller fruit sizee0
- Outcome
- reduced yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The reduced yield resulted from both less fruit‐setting and smaller fruit size.”
t0“muskmelon”
Claim · model-written summary
Required MKP rates for cucumber depended primarily on growth-medium composition.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- MKPe0
- Outcome
- MKP rates requirede0
- Setting
- growth medium compositione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The MKP rates required by cucumber plants in 1993/94 depended primarily on growth medium composition.”
Claim · model-written summary
Cucumber in inert tuff and sandy media responded more significantly to MKP than plants in organic-rich media.
- Taxon
- cucumberCucumis sativust0
- Treatment
- MKPe0
- Outcome
- respondede0
- Direction
- more significantlye0
- Comparator
- media rich in organic mattere0
- Setting
- inert tuff (volcanic gravel) and sandy mediae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants grown in inert tuff (volcanic gravel) and sandy media responded more significantly to MKP than did those grown in media rich in organic matter.”
t0“cucumber”
Claim · model-written summary
The authors favored MKP for safer handling, solubility in fertigation systems, and high PK content.
- Taxon
- cucumberCucumis sativust0
- Outcome
- preferring the use of MKPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There are at least three reasons for preferring the use of MKP, first it is much safer to handle than is H3PO4, second it is highly soluble and can be easily incorporated in fertigation systems, and third it has a high PK content.”
t0“cucumber”
The same questions in other papers
phosphorus · yield · Cucumis melo (muskmelon)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- negative
- positive
- positive
3 papers more in this group
See all 7 papers →phosphorus · growth · Cucumis melo (muskmelon)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- negative
- positive
- positive
3 papers more in this group
See all 7 papers →potassium · growth · Cucumis melo (muskmelon)Positive and negative results
6 papers in the same direction as this paper · 1 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- no effect
- positive
- positive
4 papers more in this group
See all 8 papers →potassium · yield · Cucumis melo (muskmelon)Positive and negative results
8 papers in the same direction as this paper · 3 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- no effect
- no effect
- no effect
8 papers more in this group
See all 12 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.