Abstract
A study was initiated in 1997 to introduce the culture of supplementing low rates of NP fertilizers with farmyard manure (FYM) in the maize based farming system of western Oromia. The treatments were 0/0, 20/20, 40/25 and 60/30 kg N/P ha−1 and 0, 4, 8, and 12 t FYM ha−1 in factorial arrangement in a randomized complete block design with three replications. The experiment was conducted at Laga Kalla, Walda, Shoboka, Harato, and Bako Research Center using BH-660 hybrid maize. The FYM used for the experiment was well decomposed under shade and spot applied together with the P fertilizer at planting; N was applied in split form. The residual effects of FYM were investigated for Laga Kalla, Walda and Shoboka during the 1998 cropping season. Statistical analysis revealed that the N/P fertilizers and FYM significantly (p < 0.05) increased grain yield in all locations except for Walda in 1997. Interactions of FYM and NP fertilizer rates were significant (p ≤ 0.05) at all locations except for Shoboka. The application of FYM alone at rates of 4, 8, and 12 t ha−1 produced average grain yields of 5.76, 5.61 and 5.93 t ha−1, respectively, compared to 3.53 t ha−1 for the control treatment in 1997. There were significant residual effects of FYM and NP fertilizers applied in 1997 on maize grain yields in 1998. Laboratory analysis confirmed that considerable amounts of macronutrients and small amounts of micronutrients were supplied by FYM. Based on the results of this study, the integrated use of properly managed FYM and low rates NP fertilizers could be used for maize production in the areas under consideration. Moreover, sole applications of FYM on relatively fertile soils like Walda and Harato are useful in maintaining soil fertility and are encouraging for resource poor farmers.
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Claims 9
Claim · model-written summary
NP fertilizers and FYM increased maize grain yield at all locations except Walda in 1997.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the N/P fertilizers and FYM significantly (p < 0.05) increased grain yield in all locations except for Walda in 1997”
t0“Maize”
Claim · model-written summary
FYM and NP fertilizer rates interacted significantly at all locations except Shoboka.
- Treatment
- FYM and NP fertilizer ratese0
- Outcome
- Interactions of FYM and NP fertilizer ratese0
- Setting
- Shobokae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Interactions of FYM and NP fertilizer rates were significant (p ≤ 0.05) at all locations except for Shoboka”
t0“Maize”
Claim · model-written summary
4 FYM produced 5.76 average grain yield versus the control in 1997.
- Treatment
- FYM alonee0
- Outcome
- average grain yieldse0
- Direction
- higherinferrede0
- Value
- 5.76e0
- Qualifier
- 4e0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of FYM alone at rates of 4, 8, and 12 t ha−1 produced average grain yields of 5.76, 5.61 and 5.93 t ha−1, respectively, compared to 3.53 t ha−1 for the control treatment in 1997”
t0“Maize”
Claim · model-written summary
8 FYM produced 5.61 average grain yield versus the control in 1997.
- Treatment
- FYM alonee0
- Outcome
- average grain yieldse0
- Direction
- higherinferrede0
- Value
- 5.61e0
- Qualifier
- 8e0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of FYM alone at rates of 4, 8, and 12 t ha−1 produced average grain yields of 5.76, 5.61 and 5.93 t ha−1, respectively, compared to 3.53 t ha−1 for the control treatment in 1997”
t0“Maize”
Claim · model-written summary
12 FYM produced 5.93 average grain yield versus the control in 1997.
- Treatment
- FYM alonee0
- Outcome
- average grain yieldse0
- Direction
- higherinferrede0
- Value
- 5.93e0
- Qualifier
- 12e0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of FYM alone at rates of 4, 8, and 12 t ha−1 produced average grain yields of 5.76, 5.61 and 5.93 t ha−1, respectively, compared to 3.53 t ha−1 for the control treatment in 1997”
t0“Maize”
Claim · model-written summary
FYM and NP fertilizer applied in 1997 had significant residual effects on 1998 maize grain yield.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were significant residual effects of FYM and NP fertilizers applied in 1997 on maize grain yields in 1998”
Claim · model-written summary
FYM supplied considerable macronutrients and small amounts of micronutrients.
- Outcome
- macronutrients and small amounts of micronutrientse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“considerable amounts of macronutrients and small amounts of micronutrients were supplied by FYM”
t0“Maize”
Claim · model-written summary
Integrated properly managed FYM and low NP rates could be used for maize production.
- Outcome
- integrated use of properly managed FYM and low rates NP fertilizerse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the integrated use of properly managed FYM and low rates NP fertilizers could be used for maize production in the areas under consideration”
Claim · model-written summary
Sole FYM application on fertile soils such as Walda and Harato was recommended to maintain fertility.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sole applications of FYM on relatively fertile soils like Walda and Harato are useful in maintaining soil fertility”
t0“Maize”
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See all 3,908 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.