Abstract
SUMMARY Kloka spring wheat grown on a sandy-loam soil was given 50, 100, 151 or 201 kg N/ha as fertilizer, was irrigated during drought or not irrigated, and was sprayed with CCC (2-chloroethyltrimethylammonium chloride) or not sprayed. Samples, taken approximately weekly from brairding to heading and less frequently to maturity measured the production of dry matter. The dried samples were analysed for percentage N, P, K, Ca, Mg and Na and the uptakes of these were calculated to measure the effects of treatments on the composition of the crop and the weights of nutrients it contained. Increasing amounts of fertilizer-N up to 151 kg N/ha increased the maximum weight of straw without irrigation and up to 201 kg N/ha with irrigation; similarly, maximum weights of ears were with 100 kg N/ha without irrigation and 151 kg N/ha with irrigation. The maximum weight of straw was at flowering and of ears at maturity. Irrigation increased yields of straw and ears, more with the two larger than with the two smaller amounts of fertilizer-N. Spraying with CCC decreased the yield of straw, and did not affect the yield of ears. Increasing amounts of fertilizer-N increased percentage nutrients in the green crop and in the straw, and of N, P and Mg in the ears. Effects of irrigation and spraying with CCC on composition differed between nutrients and between ears and straw, sometimes increasing, sometimes decreasing, and sometimes having no effect, on percentage in dry matter. Increasing fertilizer-N increased the maximum weight of N, K, Ca and Na in the crop. P and Mg increased with up to 151 kg N/ha, but was no more with 201 kg N/ha. Maximum weight of N, P, Mg and Na was found at or near maturity, of K at heading and of Ca at flowering.
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Claims 19
Claim · model-written summary
Fertilizer N increased maximum straw weight through 151 kg N/ha without irrigation.
- Taxon
- spring wheat
Triticum aestivumt0 - Treatment
- fertilizer-N up to 151 kg N/hae0
- Outcome
- maximum weight of strawe0
- Direction
- increasede0
- Qualifier
- without irrigatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing amounts of fertilizer-N up to 151 kg N/ha increased the maximum weight of straw without irrigation and up to 201 kg N/ha with irrigation”
t0“spring wheat”
Claim · model-written summary
With irrigation, fertilizer N increased maximum straw weight through 201 kg N/ha.
- Taxon
- spring wheatTriticum aestivumt0
- Treatment
- 201 kg N/hae0
- Outcome
- maximum weight of strawe0
- Direction
- increasede0
- Qualifier
- with irrigatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing amounts of fertilizer-N up to 151 kg N/ha increased the maximum weight of straw without irrigation and up to 201 kg N/ha with irrigation”
t0“spring wheat”
Claim · model-written summary
Maximum ear weight occurred at 100 kg N/ha without irrigation.
- Taxon
- spring wheatTriticum aestivumt0
- Treatment
- 100 kg N/hae0
- Outcome
- maximum weights of earse0
- Qualifier
- without irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum weights of ears were with 100 kg N/ha without irrigation and 151 kg N/ha with irrigation”
t0“spring wheat”
Claim · model-written summary
Maximum ear weight occurred at 151 kg N/ha with irrigation.
- Taxon
- spring wheatTriticum aestivumt0
- Treatment
- 151 kg N/hae0
- Outcome
- maximum weights of earse0
- Qualifier
- with irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum weights of ears were with 100 kg N/ha without irrigation and 151 kg N/ha with irrigation”
t0“spring wheat”
Claim · model-written summary
Maximum straw weight occurred at flowering.
- Taxon
- spring wheatTriticum aestivumt0
- Organ / stage
- floweringe0
- Outcome
- maximum weight of strawe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum weight of straw was at flowering and of ears at maturity”
t0“spring wheat”
Claim · model-written summary
Maximum ears weight occurred at maturity.
- Taxon
- spring wheatTriticum aestivumt0
- Organ / stage
- maturitye0
- Outcome
- of earse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum weight of straw was at flowering and of ears at maturity”
t0“spring wheat”
Claim · model-written summary
Irrigation increased straw and ear yields, especially at larger N rates.
- Taxon
- spring wheatTriticum aestivumt0
- Treatment
- Irrigatione0
- Outcome
- yields of straw and earse0
- Direction
- increasede0
- Qualifier
- more with the two larger than with the two smaller amounts of fertilizer-Ne0
- Comparator
- two smaller amounts of fertilizer-Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation increased yields of straw and ears, more with the two larger than with the two smaller amounts of fertilizer-N”
t0“spring wheat”
Claim · model-written summary
CCC decreased yield of straw.
- Taxon
- spring wheatTriticum aestivumt0
- Treatment
- Spraying with CCCe0
- Outcome
- yield of strawe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spraying with CCC decreased the yield of straw, and did not affect the yield of ears”
t0“spring wheat”
Claim · model-written summary
CCC did not affect yield of ears.
- Taxon
- spring wheatTriticum aestivumt0
- Treatment
- Spraying with CCCe0
- Outcome
- yield of earse0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spraying with CCC decreased the yield of straw, and did not affect the yield of ears”
t0“spring wheat”
Claim · model-written summary
Increasing fertilizer N increased percentage nutrients in the green crop.
- Taxon
- spring wheatTriticum aestivumt0
- Treatment
- Increasing amounts of fertilizer-Ne0
- Outcome
- percentage nutrients in the green crope0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing amounts of fertilizer-N increased percentage nutrients in the green crop and in the straw, and of N, P and Mg in the ears”
t0“spring wheat”
Claim · model-written summary
Increasing fertilizer N increased percentage nutrients in the straw.
- Taxon
- spring wheatTriticum aestivumt0
- Treatment
- Increasing amounts of fertilizer-Ne0
- Outcome
- percentage nutrientse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing amounts of fertilizer-N increased percentage nutrients in the green crop and in the straw, and of N, P and Mg in the ears”
t0“spring wheat”
Claim · model-written summary
Increasing fertilizer N increased N, P and Mg in the ears.
- Taxon
- spring wheatTriticum aestivumt0
- Treatment
- Increasing amounts of fertilizer-Ne0
- Outcome
- N, P and Mg in the earse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing amounts of fertilizer-N increased percentage nutrients in the green crop and in the straw, and of N, P and Mg in the ears”
t0“spring wheat”
Claim · model-written summary
Irrigation and CCC had nutrient- and organ-dependent effects on dry matter composition.
- Taxon
- spring wheatTriticum aestivumt0
- Treatment
- irrigation and spraying with CCCe0
- Outcome
- percentage in dry mattere0
- Qualifier
- sometimes increasing, sometimes decreasing, and sometimes having no effecte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Effects of irrigation and spraying with CCC on composition differed between nutrients and between ears and straw, sometimes increasing, sometimes decreasing, and sometimes having no effect, on percentage in dry matter”
t0“spring wheat”
Claim · model-written summary
Increasing fertilizer N increased crop N, K, Ca and Na maxima.
- Taxon
- spring wheatTriticum aestivumt0
- Treatment
- Increasing fertilizer-Ne0
- Outcome
- maximum weight of N, K, Ca and Na in the crope0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing fertilizer-N increased the maximum weight of N, K, Ca and Na in the crop”
t0“spring wheat”
Claim · model-written summary
P and Mg increased up to 151 kg N/ha.
- Taxon
- spring wheatTriticum aestivumt0
- Treatment
- up to 151 kg N/hae0
- Outcome
- P and Mge0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P and Mg increased with up to 151 kg N/ha, but was no more with 201 kg N/ha”
t0“spring wheat”
Claim · model-written summary
P and Mg showed no further increase at 201 kg N/ha.
- Taxon
- spring wheatTriticum aestivumt0
- Treatment
- 201 kg N/hae0
- Outcome
- P and Mge0
- Direction
- no moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P and Mg increased with up to 151 kg N/ha, but was no more with 201 kg N/ha”
t0“spring wheat”
Claim · model-written summary
Maximum N, P, Mg and Na weight occurred at or near maturity.
- Taxon
- spring wheatTriticum aestivumt0
- Organ / stage
- at or near maturitye0
- Outcome
- Maximum weight of N, P, Mg and Nae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum weight of N, P, Mg and Na was found at or near maturity, of K at heading and of Ca at flowering”
t0“spring wheat”
Claim · model-written summary
Maximum K weight occurred heading.
- Taxon
- spring wheatTriticum aestivumt0
- Organ / stage
- headinge0
- Outcome
- of Ke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum weight of N, P, Mg and Na was found at or near maturity, of K at heading and of Ca at flowering”
t0“spring wheat”
Claim · model-written summary
Maximum Ca weight occurred flowering.
- Taxon
- spring wheatTriticum aestivumt0
- Organ / stage
- floweringe0
- Outcome
- of Cae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum weight of N, P, Mg and Na was found at or near maturity, of K at heading and of Ca at flowering”
t0“spring wheat”
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