Abstract
A study was carried out to establish the optimum rates of N and P fertilizers, optimal ratio of basal to top dressed N and time for top dressing the balance of total N in rainfed wheat in the high rainfall zone of northern Zambia. Grain yield, number of spikes per unit area and number of kernels per spike increased with both N and P rates. Except for kernel weight, the other yield components were positively correlated with grain yield. Split application with a ratio favouring top dressing, and applied four weeks after seeding gave higher yields than ratios favouring basal dressing. Initial fertility levels and rainfall distribution influence on the effects of these factors are discussed.
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Claims 3
Claim · model-written summary
Grain yield, spike number per unit area and kernel number per spike increased with both N and P rates
- Taxon
- wheat
Triticum aestivume0 - Treatment
- N and P ratese1
- Outcome
- Grain yield, number of spikes per unit area and number of kernels per spikee1
- Direction
- increasede1
- Setting
- high rainfall zone of northern Zambiae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rainfed wheat in the high rainfall zone of northern Zambia”
e1“Grain yield, number of spikes per unit area and number of kernels per spike increased with both N and P rates”
Claim · model-written summary
Yield components other than kernel weight were positively correlated with grain yield in rainfed wheat
- Taxon
- wheatTriticum aestivume0
- Outcome
- other yield componentse2
- Direction
- positively correlatede2
- Qualifier
- Except for kernel weighte2
- Setting
- high rainfall zone of northern Zambiae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rainfed wheat in the high rainfall zone of northern Zambia”
e2“Except for kernel weight, the other yield components were positively correlated with grain yield”
Claim · model-written summary
Split N application with a ratio favouring top dressing, applied four weeks after seeding, gave higher yields than ratios favouring basal dressing
- Taxon
- wheatTriticum aestivume0
- Treatment
- Split application with a ratio favouring top dressing, and applied four weeks after seedinge3
- Outcome
- yieldse3
- Direction
- highere3
- Comparator
- ratios favouring basal dressinge3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in rainfed wheat in the high rainfall zone of northern Zambia”
e3“Split application with a ratio favouring top dressing, and applied four weeks after seeding gave higher yields than ratios favouring basal dressing”
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