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@ARTICLE{Asaye:908875,
author = {Asaye, Zeleke and Kim, Dong-Gill and Yimer, Fantaw and
Prost, Katharina and Obsa, Oukula and Tadesse, Menfese and
Gebrehiwot, Mersha and Brüggemann, Nicolas},
title = {{E}ffects of {C}ombined {A}pplication of {C}ompost and
{M}ineral {F}ertilizer on {S}oil {C}arbon and {N}utrient
{C}ontent, {Y}ield, and {A}gronomic {N}itrogen {U}se
{E}fficiency in {M}aize-{P}otato {C}ropping {S}ystems in
{S}outhern {E}thiopia},
journal = {Land},
volume = {11},
number = {6},
issn = {2073-445X},
address = {Basel},
publisher = {MDPI},
reportid = {FZJ-2022-02889},
pages = {784 -},
year = {2022},
abstract = {Low nutrient input and low soil fertility are limiting
agricultural productivity in Ethiopia. The main objectives
were therefore to evaluate the effects of combined compost
and mineral fertilizer (MF) application on soil properties,
yield, agronomic nitrogen use efficiency, and adoption of
compost application in maize (Zey mays L.)—potato (Solanum
tuberosum L.) cropping systems. Yield data were collected
from 20 smallholders applying (i) compost and MF at a total
rate of 110 kg N ha−1, with 6 Mg compost ha−1 + MF
(6CF), 12 Mg compost ha−1 + MF (12CF), and 16 Mg compost
ha−1 + MF (16CF; compost on a fresh weight basis), (ii) MF
application of 108 kg N ha−1 (F), and (iii) zero
fertilization. Soil from 0–20 and 20–40 cm depths was
collected from 16 farms using compost and MF. Compost + MF
treatments showed significantly lower soil bulk density and
iron contents, while pH, electrical conductivity, and cation
exchange capacity were higher compared to F treatments. The
6CF, 12CF, and 16CF showed 22, 43, and $54\%$ higher maize
grain yield and 8, 16, and $18\%$ higher potato tuber yield
compared to F, respectively. The scarcity of organic
material was a major socioeconomic constraint for
smallholders for producing and applying compost},
cin = {IBG-3},
ddc = {630},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {2173 - Agro-biogeosystems: controls, feedbacks and impact
(POF4-217)},
pid = {G:(DE-HGF)POF4-2173},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000816555200001},
doi = {10.3390/land11060784},
url = {https://juser.fz-juelich.de/record/908875},
}