Abstract
Laboratory, greenhouse and field studies were undertaken to investigate the status of Cu and Zn and to find out whether the addition of these nutrient elements in soils would increase maize grains and yield components and also, remediate their constraints in coastal plain sand derived soil of southeastern Nigeria, for optimization of maize (Zea mays L.) yields. Dry matter yields, plant concentrations, plant uptake, and maize grain yields were used to evaluate the effects of Cu and Zn levels. In both the greenhouse and field experiments, hydrated Cu and Zn sulphate fertilizers were applied to the soils in separate experiments at seven levels (0, 2, 4, 6, 8, 10 and 12 kg·ha−1) for Cu and Zn respectively. The recommended N, P, and K at rates of 120, 60, 30 kg·ha−1, respectively, were also used as basal application. The results showed the status of available Cu and Zn by 0.1 N HCl was found to be low in the soil. The application of Cu and Zn into the soils significantly (P < 0.05) increased maize dry matter production, concentration, uptake and grain yields. The esti-mated optimum rates for Cu and Zn under greenhouse environments were established at 10 kg·Cu·ha−1 and 8 kg·Zn·ha−1, respectively. Maximum uptake and grain yields in maize were also
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Claims 4
Claim · model-written summary
Soil available Cu and Zn were low.
Not reportedTaxon
Verbatim
e0“the status of available Cu and Zn by 0.1 N HCl was found to be low in the soil”
Claim · model-written summary
Cu and Zn applications significantly increased maize dry matter, nutrient concentration, uptake and grain yield.
- Treatment
- application of Cu and Zne0
- Outcome
- maize dry matter production, concentration, uptake and grain yieldse0
- Direction
- increasede0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea Mays L.)”
e0“The application of Cu and Zn into the soils significantly (P < 0.05) increased maize dry matter production, concentration, uptake and grain yields”
Claim · model-written summary
The greenhouse optimum Cu rate was 10 kg·Cu·ha−1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea Mays L.)”
e0“The esti-mated optimum rates for Cu and Zn under greenhouse environments were established at 10 kg·Cu·ha−1 and 8 kg·Zn·ha−1, respectively”
Claim · model-written summary
The greenhouse optimum Zn rate was 8 kg·Zn·ha−1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea Mays L.)”
e0“optimum rates for Cu and Zn under greenhouse environments were established at 10 kg·Cu·ha−1 and 8 kg·Zn·ha−1”
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