Abstract
TWO FILED seasons were conducted during the summer seasons of 2010 and 2011 in the Experimental Farm at Demo, Faculty of Agriculture, Fayoum University, to increase nitrogen efficiency (ammonium nitrate 33.5% N, 150, 200, 250 and 300 kg fed-1) under three concentrations of humic acid as water solution 0.5, 1.0 and 1.5gL-1, in addition to the untreated as control to squash plants (Cucurbita pepo L.) (cv. Amjjed hybrid) grown in newly reclaimed saline soil.. In comparison with control, all other rates significantly increased vegetative growth plant characters ( i.e. number of leaves plant-1, stem length, total leaf area plant-1, leaf area leaf-1 and also, leaves, stem and canopy dry weight plant-1) as well as fruit yield and its components (i.e. number of fruits plant-1, yield plant-1 and total yield of fruits fed-1) except average of fruit weight. In addition, the concentrations of N, P and K % in leaves were increased, and Na and Cl were decreased. The same results were obtained with all nitrogen fertilizer rates, 200, 250 and 300 kg ammonium nitrate fed-1 as compared to the 150 kg fed-1 with some exceptions, P% was not affected and K% was decreased with increasing the rate of nitrogen. In view of the above mentioned results, it has been concluded that the efficiency of nitrogen fertilization increased with soil application of humic acid reflected on the growth and chemical composition and yield of squash (cv. Amjjed hybrid), and was the best treatment: the water solution of humic acid (1.5gL -1), with nitrogen fertilizer (250 kg) ammonium nitrate fed-1 where given a significant increase of total squash fruits yield fed-1 grown in newly reclaimed saline soil.
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 8
Claim · model-written summary
Humic acid rates increased squash vegetative growth traits relative to untreated control.
Verbatim
e0“all other rates significantly increased vegetative growth plant characters ( i.e. number of leaves plant-1, stem length, total leaf area plant-1, leaf area leaf-1 and also, leaves, stem and canopy dry weight plant-1)”
e1“three concentrations of humic acid as water solution 0.5, 1.0 and 1.5gL-1, in addition to the untreated as control to squash plants (Cucurbita pepo L.) (cv. Amjjed hybrid)”
Claim · model-written summary
Humic acid rates increased squash fruit yield and its components, except average fruit weight, relative to untreated control.
Verbatim
e0“all other rates significantly increased vegetative growth plant characters ( i.e. number of leaves plant-1, stem length, total leaf area plant-1, leaf area leaf-1 and also, leaves, stem and canopy dry weight plant-1) as well as fruit yield and its components (i.e. number of fruits plant-1, yield plant-1 and total yield of fruits fed-1) except average of fruit weight”
e1“three concentrations of humic acid as water solution 0.5, 1.0 and 1.5gL-1, in addition to the untreated as control to squash plants (Cucurbita pepo L.)”
Claim · model-written summary
Humic acid increased leaf N, P and K concentrations.
Verbatim
e0“the concentrations of N, P and K % in leaves were increased”
e1“three concentrations of humic acid as water solution 0.5, 1.0 and 1.5gL-1, in addition to the untreated as control to squash plants (Cucurbita pepo L.)”
Claim · model-written summary
Humic acid decreased leaf Na and Cl concentrations.
Verbatim
e0“Na and Cl were decreased”
e1“three concentrations of humic acid as water solution 0.5, 1.0 and 1.5gL-1, in addition to the untreated as control to squash plants (Cucurbita pepo L.)”
Claim · model-written summary
Nitrogen fertilizer rates of 200, 250 and 300 kg ammonium nitrate per fed increased squash growth and yield relative to 150 kg per fed.
- Taxon
- squashe1
- Treatment
- 200, 250 and 300 kg ammonium nitrate fed-1e0
- Outcome
- growth and chemical composition and yielde1
- Comparator
- 150 kg fed-1e0
Not reportedDirection
Verbatim
e0“The same results were obtained with all nitrogen fertilizer rates, 200, 250 and 300 kg ammonium nitrate fed-1 as compared to the 150 kg fed-1 with some exceptions”
e1“growth and chemical composition and yield of squash (cv. Amjjed hybrid)”
Claim · model-written summary
Increasing nitrogen rate did not affect leaf P percentage.
Verbatim
e0“P% was not affected”
e1“with all nitrogen fertilizer rates, 200, 250 and 300 kg ammonium nitrate fed-1 as compared to the 150 kg fed-1”
e2“yield of squash (cv. Amjjed hybrid)”
Claim · model-written summary
Increasing nitrogen rate decreased leaf K percentage.
Verbatim
e0“K% was decreased with increasing the rate of nitrogen”
e1“with all nitrogen fertilizer rates, 200, 250 and 300 kg ammonium nitrate fed-1 as compared to the 150 kg fed-1”
e2“yield of squash (cv. Amjjed hybrid)”
Claim · model-written summary
Humic acid at 1.5gL -1 with 250 kg ammonium nitrate per fed gave the best significant total squash fruit yield.
- Taxon
- squashe0
- Treatment
- the water solution of humic acid (1.5gL -1), with nitrogen fertilizer (250 kg) ammonium nitrate fed-1e0
- Outcome
- total squash fruits yield fed-1e0
- Direction
- increasee0
- Setting
- newly reclaimed saline soile0
Not reportedComparator
Verbatim
e0“the best treatment: the water solution of humic acid (1.5gL -1), with nitrogen fertilizer (250 kg) ammonium nitrate fed-1 where given a significant increase of total squash fruits yield fed-1 grown in newly reclaimed saline soil”
The same questions in other papers
fertilization · yield · Cucurbita (pumpkins)Positive and negative results
41 papers in the same direction as this paper · 9 in the opposite direction
- negative
- no effect
- negative
47 papers more in this group
See all 51 papers →other · nutrient: content · Cucurbita (pumpkins)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →other · yield · Cucurbita (pumpkins)Results agree
8 papers in the same direction as this paper
- positive
- positive
- positive
5 papers more in this group
See all 9 papers →other · growth · Cucurbita (pumpkins)Results agree
11 papers in the same direction as this paper
- positive
- positive
- positive
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.