Abstract
Abstract To find out how maize and potato can grow and develop in an intercropping system rather than each grown alone in a sole cropping system the following factorial experiment was performend in the frame-work of a randomized complete block three replications in the experimental farm of the faculty of agriculture, Zanjan University in year 2004. Different potato to maize ratios of (1:0), i.e. sole potato;(3:1) meaning 75% potato plus 25% maize; (1:1), that is half and half of each crop; 25 percent potato together with maize of 75% (1:3); and finally sole cropping of maize (0:1) were employed. Two plant population treatments of 3.8 and 5.3 plants/ m2 were assigned to each crop. There was an increase observed in the radiation absorption and in Leaf Area Index (LAI) with an increase in plant density from 3.8 to 5.3 plant per square meter. Maximum potato yield (20390 kg/ha) was obtained from 3:1 crop ratio and maximum yield of maize (8898 kg/ha) from the 1:1 ratio of intercropping system. In the case of potato the new cropping system (intercropping) there were significant (? = 0.05) observed in yield, mean number of branches per plant, as well as in mean weight of potato tubers. In maize, the cropping system revealed a significant effect on yield, mean number of ears per plant as well as on mean number of seeds per year. Land Equivalent Ratio (LER) was shown to be more than one for all the treatments indicating more profitability and superiority of intercropping to sole cropping system. The highest LER for either one of the crops in intercropping system was 1.58. This was obtained for potato in the 3:1 ratio treatment while for maize it was obtained for the treatment of 1:1 ratio. Key Words: Sole cropping; Intercropping; Land Equivalent Ratio (LER); Dominance; Substitution
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Claims 9
Claim · model-written summary
Higher density increased radiation absorption.
- Taxon
- maize and potato
Solanum tuberosum
Zea mayst0 - Treatment
- increase in plant density from 3.8 to 5.3 plant per square metere0
- Outcome
- radiation absorptione0
- Direction
- increasee0
- Comparator
- 3.8e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was an increase observed in the radiation absorption and in Leaf Area Index (LAI) with an increase in plant density from 3.8 to 5.3 plant per square meter.”
t0“maize and potato”
Claim · model-written summary
Higher density increased leaf area index.
- Taxon
- maize and potatoSolanum tuberosumZea mayst0
- Treatment
- increase in plant density from 3.8 to 5.3 plant per square metere0
- Outcome
- Leaf Area Index (LAI)e0
- Direction
- increasee0
- Comparator
- 3.8e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was an increase observed in the radiation absorption and in Leaf Area Index (LAI) with an increase in plant density from 3.8 to 5.3 plant per square meter.”
t0“maize and potato”
Claim · model-written summary
Potato yield reached a maximum of 20390 kg/ha at the 3:1 crop ratio.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- 3:1 crop ratioe0
- Outcome
- potato yielde0
- Direction
- Maximume0
- Value
- 20390 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum potato yield (20390 kg/ha) was obtained from 3:1 crop ratio”
Claim · model-written summary
Maize yield reached a maximum of 8898 kg/ha at the 1:1 intercrop ratio.
- Treatment
- 1:1 ratio of intercropping systeme0
- Outcome
- yield of maizee0
- Direction
- maximume0
- Value
- 8898 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum yield of maize (8898 kg/ha) from the 1:1 ratio of intercropping system”
Claim · model-written summary
Cropping system had a significant effect on potato yield, branch number and tuber weight.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- intercroppinge1
- Outcome
- yield, mean number of branches per plant, as well as in mean weight of potato tuberse0
- Value
- ? = 0.05e0
- Comparator
- sole croppinge2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant (? = 0.05) observed in yield, mean number of branches per plant, as well as in mean weight of potato tubers”
e1“maximum yield of maize (8898 kg/ha) from the 1:1 ratio of intercropping system”
e2“rather than each grown alone in a sole cropping system”
Claim · model-written summary
Cropping system significantly affected maize yield, ears per plant and seeds per year.
- Treatment
- cropping systeme0
- Outcome
- yield, mean number of ears per plant as well as on mean number of seeds per yeare0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cropping system revealed a significant effect on yield, mean number of ears per plant as well as on mean number of seeds per year”
t0“maize and potato”
Claim · model-written summary
All intercropping treatments had land equivalent ratio above one.
- Taxon
- maize and potatoSolanum tuberosumZea mayst0
- Outcome
- Land Equivalent Ratio (LER)e0
- Direction
- more than onee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Land Equivalent Ratio (LER) was shown to be more than one for all the treatments”
t0“maize and potato”
Claim · model-written summary
The highest potato land equivalent ratio was 1.58 at the 3:1 ratio.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- 3:1 ratio treatmente0
- Outcome
- LERe0
- Direction
- higheste0
- Value
- 1.58e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest LER for either one of the crops in intercropping system was 1.58. This was obtained for potato in the 3:1 ratio treatment”
Claim · model-written summary
The highest maize land equivalent ratio was 1.58 at the 1:1 ratio.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest LER for either one of the crops in intercropping system was 1.58. This was obtained for potato in the 3:1 ratio treatment while for maize it was obtained for the treatment of 1:1 ratio.”
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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.