Abstract
Low soil fertility due to monoculture cereal production systems and inadequate fertiliser application are some of the major causes for declining crop production in developing countries. Integrated use of organic and inorganic fertilisers is an option to alleviate soil fertility problem as it utilises available organic and inorganic nutrients for sustainable agricultural production and productivity. A field experiment was conducted in 2014 at Universiti Putra Malaysia to evaluate the effect of the integrated application of poultry manure and inorganic fertiliser on soil chemical properties and nutrient uptake of maize and soybean in maize-soybean intercropping. Treatments comprised combinations of three cropping systems (sole maize, sole soybean, and maize + soybean) and four fertilisation regimes (control, 100% NPK, 100% poultry manure (PM) and 50% NPK + 50% PM). The experiment was laid out in a randomised complete block design (RCBD) with three replications. Results showed that either growing soybean alone or as an intercrop with maize resulted in increased soil organic matter (OM) (P<0.05), total N (P<0.0001), soil available P (P<0.0001) and soil cation exchange capacity (CEC)(P<0.05). Intercropping maize with soybean significantly reduced N, P and K uptake of soybean (P<0.0001), but uptake of N, P and K by maize was not significantly (P>0.05) affected by intercropping. Application of 100% PM and integrated application of 50% NPK+50% PM gave significantly higher soil pH (P<0.001), soil OM (P<0.0001), soil total N(P<0.0001), soil available P (P<0.0001), soil exchangeable K (P<0.001) and soil CEC(P<0.0001) compared to control and 100% NPK. For both maize and soybeans, the highest uptake of N, P and K was observed from the integrated application of 50% NPK+50% PM (P<0.0001). It can be concluded that integrated application of organic and inorganic fertiliser is the best option to improve soil chemical properties and nutrient uptake of maize and soybean.
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Claims 9
Claim · model-written summary
Growing soybean alone increased soil organic matter, total N, available P and cation exchange capacity.
- Taxon
- soybean
Glycine maxt0 - Treatment
- growing soybean alonee0
- Outcome
- soil organic matter (OM) (P<0.05), total N (P<0.0001), soil available P (P<0.0001) and soil cation exchange capacity (CEC)(P<0.05)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growing soybean alone or as an intercrop with maize resulted in increased soil organic matter (OM) (P<0.05), total N (P<0.0001), soil available P (P<0.0001) and soil cation exchange capacity (CEC)(P<0.05)”
t0“maize and soybean”
Claim · model-written summary
Growing soybean with maize increased soil organic matter, total N, available P and cation exchange capacity.
- Taxon
- soybeanGlycine maxt0
- Treatment
- as an intercrop with maizee0
- Outcome
- soil organic matter (OM) (P<0.05), total N (P<0.0001), soil available P (P<0.0001) and soil cation exchange capacity (CEC)(P<0.05)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growing soybean alone or as an intercrop with maize resulted in increased soil organic matter (OM) (P<0.05), total N (P<0.0001), soil available P (P<0.0001) and soil cation exchange capacity (CEC)(P<0.05)”
t0“maize and soybean”
Claim · model-written summary
Intercropping reduced soybean N, P and K uptake.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Intercropping maize with soybeane0
- Outcome
- N, P and K uptake of soybeane0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropping maize with soybean significantly reduced N, P and K uptake of soybean (P<0.0001)”
Claim · model-written summary
Intercropping did not significantly change maize N, P and K uptake.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“uptake of N, P and K by maize was not significantly (P>0.05) affected by intercropping”
Claim · model-written summary
Poultry manure alone increased the listed soil chemical properties relative to control and NPK.
- Taxon
- maize and soybeanGlycine max
Zea mayst0 - Treatment
- 100% PMe0
- Outcome
- soil pH (P<0.001), soil OM (P<0.0001), soil total N(P<0.0001), soil available P (P<0.0001), soil exchangeable K (P<0.001) and soil CEC(P<0.0001)e0
- Direction
- highere0
- Comparator
- control and 100% NPKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 100% PM and integrated application of 50% NPK+50% PM gave significantly higher soil pH (P<0.001), soil OM (P<0.0001), soil total N(P<0.0001), soil available P (P<0.0001), soil exchangeable K (P<0.001) and soil CEC(P<0.0001) compared to control and 100% NPK”
t0“maize and soybean”
Claim · model-written summary
Integrated NPK and poultry manure increased the listed soil chemical properties relative to control and NPK.
- Taxon
- maize and soybeanGlycine maxZea mayst0
- Treatment
- 50% NPK+50% PMe0
- Outcome
- soil pH (P<0.001), soil OM (P<0.0001), soil total N(P<0.0001), soil available P (P<0.0001), soil exchangeable K (P<0.001) and soil CEC(P<0.0001)e0
- Direction
- highere0
- Comparator
- control and 100% NPKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 100% PM and integrated application of 50% NPK+50% PM gave significantly higher soil pH (P<0.001), soil OM (P<0.0001), soil total N(P<0.0001), soil available P (P<0.0001), soil exchangeable K (P<0.001) and soil CEC(P<0.0001) compared to control and 100% NPK”
t0“maize and soybean”
Claim · model-written summary
Integrated NPK and poultry manure produced the highest maize N, P and K uptake.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For both maize and soybeans, the highest uptake of N, P and K was observed from the integrated application of 50% NPK+50% PM (P<0.0001)”
Claim · model-written summary
Integrated NPK and poultry manure produced the highest soybean N, P and K uptake.
- Taxon
- soybeansGlycine maxe0
- Treatment
- 50% NPK+50% PMe0
- Outcome
- uptake of N, P and Ke0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For both maize and soybeans, the highest uptake of N, P and K was observed from the integrated application of 50% NPK+50% PM (P<0.0001)”
Claim · model-written summary
The authors recommend combined organic and inorganic fertilizer to improve soil chemistry and nutrient uptake.
- Taxon
- maize and soybeanGlycine maxZea mayse0
- Outcome
- integrated application of organic and inorganic fertiliser is the best option to improve soil chemical properties and nutrient uptakee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“integrated application of organic and inorganic fertiliser is the best option to improve soil chemical properties and nutrient uptake of maize and soybean”
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