Nitrogen Use Efficiency and Maize Productivity in the Guinea Savanna Agro-ecological Zone of Ghana

In Zambia, small holder farmers depend on producing maize (Zea mays), which is a major staple food for many Zambians. Maize productivity among the smallholder farmers is quite low, giving only 2.3 tons per hectare. The low yields are attributed to insufficient and erratic rain fall, low soil fertility, and poor farming practices. Therefore, the objective of this study was to evaluate the performance of maize genotypes for nitrogen use efficiency and soil moisture utilisation under conservation farming system. The trials were carried out at two sites with different soil types. Three maize varieties i.e. ZMS 606, GV 640 and GV 635 were evaluated in maize – cowpea rotation. Four cowpea varieties used for rotation with maize, i.e. Bubebe Lutembwe, BB 14-16-2-2 and LT 11-3-3-12. BB 14-16-2-2 and LT 11-3-3-12 are mutation-derived lines of Bubebe and Lutembwe cowpea parent varieties respectively. The experimental design used was split plot with three replications. The NUE was significantly (P< 0.05) higher in CF and accounted for 27 % and 15% more than conventional farming system which valued 17% and 3% at Chisamba and Batoka, respectively. while soil moisture content was higher at Batoka than Chisamba in CF system. ZMS 606 and GV 640 varieties were superior over GV 635 for NUE. Cowpea variety BB 14-16-2-2 significantly increased NUE of maize varieties. Therefore, smallholder farmers in Zambia can increase maize productivity in maize - cowpea rotation system due to the increased NUE. Recommendations are made for farmers to select improved nitrogen efficient maize varieties to optimize productivity of maize in conservation farming system.

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Effect of plastic film mulching on maize productivity and nitrogen use efficiency under organic farming in South Korea

The Science of The Total Environment ◽

10.1016/j.scitotenv.2021.147503 ◽

2021 ◽

pp. 147503

Author(s):

Jeong Gu Lee ◽

Ho Gyeong Chae ◽

Hyun Young Hwang ◽

Pil Joo Kim ◽

Song Rae Cho

Keyword(s):

South Korea ◽

Organic Farming ◽

Nitrogen Use Efficiency ◽

Plastic Film ◽

Nitrogen Use ◽

Plastic Film Mulching ◽

Maize Productivity ◽

Use Efficiency ◽

Film Mulching

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Faculty Opinions recommendation of Leaf-level nitrogen use efficiency: definition and importance.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.717964300.793465842 ◽

2012 ◽

Author(s):

Christian Körner

Keyword(s):

Nitrogen Use Efficiency ◽

Nitrogen Use ◽

Leaf Level ◽

Use Efficiency

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Faculty Opinions recommendation of PvNAC1 and PvNAC2 Are Associated with Leaf Senescence and Nitrogen Use Efficiency in Switchgrass.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.726131278.793514339 ◽

2016 ◽

Author(s):

Elizabeth Hood

Keyword(s):

Leaf Senescence ◽

Nitrogen Use Efficiency ◽

Nitrogen Use ◽

Use Efficiency

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ROLE OF CONSERVATION AGRICULTURE IN IMPROVING PRODUCTION WATER AND NITROGEN EFFICIENCY OF WHEAT UNDER RAINFED CONDITIONS

IRAQI JOURNAL OF AGRICULTURAL SCIENCES ◽

10.36103/ijas.v51i4.1093 ◽

2020 ◽

Vol 51 (4) ◽

pp. 1139-1148

Author(s):

Othman & et al.

Keyword(s):

Crop Rotation ◽

Nitrogen Use Efficiency ◽

Agricultural Research ◽

Research Work ◽

Conservation Agriculture ◽

Nitrogen Efficiency ◽

Research Station ◽

Wheat Varieties ◽

Nitrogen Use ◽

Use Efficiency

The research work was conducted in Izra’a Research station, which affiliated to the General Commission for Scientific Agricultural Research (GCSAR), during the growing seasons (2016 – 2017; 2017 – 2018), in order to evaluate the response of two durum wheat verities (Douma3 and Cham5) and two bread wheat varieties (Douma4 and Cham6) to Conservation Agriculture (CA) as a full package compared with Conventional Tillage system (CT) under rainfed condition using lentils (Variety Edleb3) in the applied crop rotation. The experiment was laid according to split-split RCBD with three replications. The average of biological yield, grain yield, rainwater use efficiency and nitrogen use efficiency was significantly higher during the first growing season, under conservation agriculture in the presence of crop rotation, in the variety Douma3 (7466 kg. ha-1, and 4162kg. ha-1, 19.006 kg ha-1 mm-1, 39.62 kg N m-2respectively). The two varieties Douma3 and Cham6 are considered more responsive to conservation agriculture system in the southern region of Syria, because they recorded the highest grain yields (2561, 2385 kg ha-1 respectively) compared with the other studied varieties (Cham5 and Douma4) (1951 and 1724 kg ha-1 respectively). They also exhibited the highest values of both rainwater and nitrogen use efficiency.

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