Abstract
Sandy coastal area in Indonesia is potential for upland rice cultivation, but it has constraints low of nutrient availability such as nitrogen. To solve the low fertility of the sandy land can be done by planting soybean between upland rice under intercropping system due to the soybean is able to provide nitrogen in soil through fixation of N2 in the air by root nodules. Intercropping is an alternative cropping system to increase land productivity, but there is competition between crops under an intercropping system. Reducing of the competition on the system is needed by crops proportion adjustment. The objective of the study is to examine growth and yield component of upland rice at different crops proportion under an intercropping system with soybean in the sandy coastal area. The research was conducted in Samas sandy coastal area, Bantul, Yogyakarta. This research used randomized complete block design (RCBD) with one factor and three blocks. The treatment of this research was five level crops proportion between upland rice and soybean under intercropping system, namely: 100:0; 80:20; 60:40; 40:60; and 20:80, respectively. The results showed that crop growth rate and yield per clump of upland rice increased on crops proportion adjustment under intercropping system with soybean. The crops proportion of 60:40 and 40:60 gave higher crop growth rates that were 1.45 g.dm-2.wk-1 and 1.44 1.45 g.dm-2.wk-1 than upland rice under monoculture (100:0) that was 1.09 g.dm-2.wk-1. The higher crop growth rates in crops proportion of 60:40 and 40:60 were able to give better yield per clump than other that were 17.17 g and 16.46 g, respectively. The yield of upland rice was not different under crops proportion of 100:0, 80:20, and 60:40 and decreased of upland rice proportion until ≤ 40% affected the low yield of upland rice.
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Claims 8
Claim · model-written summary
Intercropping proportion adjustment increased upland rice crop growth rate.
- Taxon
- upland rice
Oryza sativae0 - Treatment
- crops proportion adjustment under intercropping system with soybeane0
- Interactor
- soybean
Glycine maxe0other - Outcome
- crop growth ratee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“crop growth rate and yield per clump of upland rice increased on crops proportion adjustment under intercropping system with soybean.”
Claim · model-written summary
Intercropping proportion adjustment increased upland rice yield per clump.
- Taxon
- upland riceOryza sativae0
- Treatment
- crops proportion adjustment under intercropping system with soybeane0
- Interactor
- soybeanGlycine maxe0other
- Outcome
- yield per clumpe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“crop growth rate and yield per clump of upland rice increased on crops proportion adjustment under intercropping system with soybean.”
Claim · model-written summary
At a 60:40 rice soybean proportion, crop growth rate was higher at 1.45 g.dm-2.wk-1 versus 1.09 g.dm-2.wk-1 in monoculture.
- Taxon
- upland riceOryza sativae0
- Treatment
- 60:40e0
- Interactor
- soybeanGlycine maxe1other
- Outcome
- crop growth ratese0
- Direction
- highere0
- Value
- 1.45 g.dm-2.wk-1e0
- Qualifier
- 1.09 g.dm-2.wk-1e0
- Comparator
- monoculture (100:0)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The crops proportion of 60:40 and 40:60 gave higher crop growth rates that were 1.45 g.dm-2.wk-1 and 1.44 1.45 g.dm-2.wk-1 than upland rice under monoculture (100:0) that was 1.09 g.dm-2.wk-1.”
e1“intercropping system with soybean in the sandy coastal area”
Claim · model-written summary
At a 40:60 rice soybean proportion, crop growth rate was higher at a reported 1.44 1.45 g.dm-2.wk-1 versus monoculture.
- Taxon
- upland riceOryza sativae0
- Treatment
- 40:60e0
- Interactor
- soybeanGlycine maxe1other
- Outcome
- crop growth ratese0
- Direction
- highere0
- Value
- 1.44 1.45 g.dm-2.wk-1e0
- Qualifier
- 1.09 g.dm-2.wk-1e0
- Comparator
- monoculture (100:0)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The crops proportion of 60:40 and 40:60 gave higher crop growth rates that were 1.45 g.dm-2.wk-1 and 1.44 1.45 g.dm-2.wk-1 than upland rice under monoculture (100:0) that was 1.09 g.dm-2.wk-1.”
e1“intercropping system with soybean in the sandy coastal area”
Claim · model-written summary
The 60:40 proportion gave 17.17 g rice yield per clump, better than other proportions.
- Taxon
- upland riceOryza sativae1
- Treatment
- 60:40e0
- Interactor
- soybeanGlycine maxe2other
- Outcome
- yield per clumpe0
- Direction
- bettere0
- Value
- 17.17 ge0
- Comparator
- othere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher crop growth rates in crops proportion of 60:40 and 40:60 were able to give better yield per clump than other that were 17.17 g and 16.46 g, respectively.”
e1“yield component of upland rice”
e2“intercropping system with soybean in the sandy coastal area”
Claim · model-written summary
The 40:60 proportion gave 16.46 g rice yield per clump, better than other proportions.
- Taxon
- upland riceOryza sativae1
- Treatment
- 40:60e0
- Interactor
- soybeanGlycine maxe2other
- Outcome
- yield per clumpe0
- Direction
- bettere0
- Value
- 16.46 ge0
- Comparator
- othere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher crop growth rates in crops proportion of 60:40 and 40:60 were able to give better yield per clump than other that were 17.17 g and 16.46 g, respectively.”
e1“yield component of upland rice”
e2“intercropping system with soybean in the sandy coastal area”
Claim · model-written summary
Rice yield did not differ among 100:0, 80:20 and 60:40 proportions.
- Taxon
- upland riceOryza sativae0
- Treatment
- crops proportion of 100:0, 80:20, and 60:40e0
- Interactor
- soybeanGlycine maxe1other
- Outcome
- yield of upland ricee0
- Direction
- not differente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of upland rice was not different under crops proportion of 100:0, 80:20, and 60:40”
e1“intercropping system with soybean in the sandy coastal area”
Claim · model-written summary
Reducing rice proportion to 40% or below decreased upland rice yield.
- Taxon
- upland riceOryza sativae0
- Treatment
- upland rice proportion until ≤ 40%e0
- Interactor
- soybeanGlycine maxe1other
- Outcome
- yield of upland ricee0
- Direction
- lowe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreased of upland rice proportion until ≤ 40% affected the low yield of upland rice.”
e1“intercropping system with soybean in the sandy coastal area”
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See all 20 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.