Abstract
Studies conducted on selected vegetable crops in replicated trials using nitrogen fertilizer at the specified rates equivalent to 56 kg, 112 kg, 224 kg, and 448 kg per hectare, produced yield variations. The purpose of this research was to compare the effects of nitrogen (ammonium nitrate) on vegetable production for the home gardener. The yield in numbers of U.S. No. 1 grade bell peppers treated at the rate of 224 kg was higher for the third harvest when compared to the individual yields of the 1st, 2nd, and 4th harvests. The accumulative weight and number of fruit were higher on pepper plants receiving 56 kg than those receiving greater amounts of nitrogen. Tomato yields were higher for the 3rd harvest of plants treated at the 56 kg rate when compared to the yield at greater rates. Maturity of tomatoes was delayed at the nitrogen rate of 448 kg per hectare. At the nitrogen rate of 56 kg, the 2nd harvest of snap beans recorded a higher yield than the individual yields of the other three harvests. Individual head weight of cabbage was the greatest when plants received 448 kg nitrogen as compared to plants treated with less nitrogen.
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 6
Claim · model-written summary
Bell peppers given 224 kg nitrogen had higher third-harvest grade-one counts than other harvests.
Verbatim
e0“The yield in numbers of U.S. No. 1 grade bell peppers treated at the rate of 224 kg was higher for the third harvest when compared to the individual yields of the 1st, 2nd, and 4th harvests.”
Claim · model-written summary
Pepper plants given 56 kg nitrogen had higher accumulated fruit weight and count than those given more nitrogen.
Verbatim
e0“The accumulative weight and number of fruit were higher on pepper plants receiving 56 kg than those receiving greater amounts of nitrogen.”
Claim · model-written summary
Tomato plants given 56 kg nitrogen had higher third-harvest yield than plants given higher rates.
- Taxon
- Tomato
Solanum lycopersicume0 - Treatment
- 56 kg ratee0
- Outcome
- Tomato yieldse0
- Direction
- highere0
- Comparator
- greater ratese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato yields were higher for the 3rd harvest of plants treated at the 56 kg rate when compared to the yield at greater rates.”
Claim · model-written summary
Nitrogen at 448 kg per hectare delayed tomato maturity.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- nitrogen rate of 448 kg per hectaree0
- Outcome
- Maturitye0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maturity of tomatoes was delayed at the nitrogen rate of 448 kg per hectare.”
Claim · model-written summary
Snap beans given 56 kg nitrogen yielded more in the second harvest than in each other harvest.
Verbatim
e0“At the nitrogen rate of 56 kg, the 2nd harvest of snap beans recorded a higher yield than the individual yields of the other three harvests.”
Claim · model-written summary
Cabbage given 448 kg nitrogen had the greatest individual head weight.
- Taxon
- cabbage
Brassica oleracea var. capitatae0 - Treatment
- 448 kg nitrogene0
- Outcome
- Individual head weighte0
- Direction
- greateste0
- Comparator
- less nitrogene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Individual head weight of cabbage was the greatest when plants received 448 kg nitrogen as compared to plants treated with less nitrogen.”
The same questions in other papers
nitrogen · yield · Brassica oleracea (wild cabbage)Results differ
143 papers in the same direction as this paper · 17 in the opposite direction · 3 reporting no difference from an alternative
- negative
- no effect
- no effect
160 papers more in this group
See all 164 papers →nitrogen · phenology · Solanum lycopersicum (tomato)Positive and negative results
4 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- positive
9 papers more in this group
See all 13 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.