Short term fallow and partitioning effects of green manures on wheat systems in East African highlands
نویسندگان
چکیده
• Short term fallows enhance productivity, improve soil fertility and serve dual purpose in crop-livestock systems. Green manuring increased wheat grain yield by 18–26 % over mineral fertilizers. Root biomass of green manures alone subsequent crop 25 %. improved water, pH, organic carbon nutrients. Residual effect compensates 33 N demands wheat. Soil depletion is a major constraint smallholder farming sub-Saharan Africa. We tested the aftereffects manures, namely vetch (Vicia sativa L.), lupin (Lupinus polyphyllus lablab ( Lablab purpureus L.) incorporated into compared to three fertilizer levels (0/0, 23/0, 78/20 kg N/P ha ?1 ) evaluated their on status acidic Nitisols southern Ethiopia, for consecutive years (2017–2019). The treatments were laid out randomized complete block design with replications. In 2017 2018, sown March April, respectively, using short rains during late flowering stage, either (i) whole shoot root plowed under, (ii) was transferred non-treated plots or (iii) only below ground used. Wheat long same growing season month after incorporation manures. 2019, grown residual application an additional 64/20 . Results revealed that 2018 manure resulted advantages 49 32 34 19 %, 0/0 23/0 , though it produced less higher rates. addition gave significantly treatments, Similarly, also than fertilized plots. benefits from due water content, P-availability, exchangeable K, Ca, Mg, pH about 0.5 units. could compensate up recommended rate 78 conclude niche-based integration yield, sequestration sustain systems, whereby above as quality livestock feed without compromising benefits.
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ژورنال
عنوان ژورنال: Field Crops Research
سال: 2021
ISSN: ['0378-4290', '1872-6852']
DOI: https://doi.org/10.1016/j.fcr.2021.108175