Abstract
Soil erosion and crop production from the viewpoint of nutritional balance for family consumption in upland cropping systems were evaluated over period of 9 y. Cassava-based cropping pattern was adopted from the 1987/88 to 1989/90 cropping seasons and cassava cultivation with an intercrop was compared with other sequential cropping patterns from the 1990/91 to 1995/96 cropping season. The experiments were conducted in fields with Red-yellow Podozolic soil in Central Lampung, South Sumatra, Indonesia. The results obtained were as follows: 1) The yield of cassava planted in monoculture decreased from year to year without fertilizer application. In contrast, with fertilization, the yield was high and constant. The yield of cassava depended on the growth duration of cassava. The yield of upland rice and maize in monoculture was 2 to 4 times higher than that of intercropped upland rice and maize. 2) Cassava cultivation with intercropping of upland rice and maize as the first intercrop followed by peanut or soybean as the second intercrop or sequential cropping pattern of maize-maize performed well from the view points of yield and production of calorie and protein. 3) The amount of eroded soil during the first 4-month period in the rainy season was about 90% of the annual amount. Cassava cultivation with intercropping of upland rice and maize as the first intercrop reduced the amount of soil erosion. Soil erosion decreased appreciably from year to year. 4) Cassava intercropped with upland rice and maize followed by peanut or soybean was suitable from the view points of crop yield and maintenance of soil fertility in upland areas with Red-yellow Podzolic soil.
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Claims 11
Claim · model-written summary
Cassava monoculture yield declined annually without fertilizer.
- Taxon
- cassava
Manihot esculentae0 - Treatment
- without fertilizer applicatione0
- Outcome
- yielde0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of cassava planted in monoculture decreased from year to year without fertilizer application.”
Claim · model-written summary
Fertilized cassava yield remained high and constant.
Not reportedTaxon
Verbatim
e0“with fertilization, the yield was high and constant.”
Claim · model-written summary
Cassava yield depended on growth duration.
- Taxon
- cassavaManihot esculentae0
- Organ / stage
- growth duratione0
- Outcome
- yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of cassava depended on the growth duration of cassava.”
Claim · model-written summary
Monoculture upland rice yielded two to four times intercropped upland rice.
- Taxon
- upland rice
Oryza sativae0 - Outcome
- yielde0
- Direction
- highere0
- Value
- 2 to 4 timese0
- Comparator
- intercropped upland ricee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of upland rice and maize in monoculture was 2 to 4 times higher than that of intercropped upland rice and maize.”
Claim · model-written summary
Monoculture maize yielded two to four times intercropped maize.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of upland rice and maize in monoculture was 2 to 4 times higher than that of intercropped upland rice and maize.”
Claim · model-written summary
Cassava with rice and maize followed by peanut or soybean performed well for yield, calorie and protein production.
- Taxon
- CassavaManihot esculentae0
- Treatment
- intercropping of upland rice and maizee0
- Outcome
- yield and production of calorie and proteine0
- Direction
- performed welle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cassava cultivation with intercropping of upland rice and maize as the first intercrop followed by peanut or soybean as the second intercrop or sequential cropping pattern of maize-maize performed well from the view points of yield and production of calorie and protein.”
Claim · model-written summary
Sequential maize-maize performed well for yield, calorie and protein production.
- Treatment
- sequential cropping pattern of maize-maizee0
- Outcome
- yield and production of calorie and proteine0
- Direction
- performed welle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sequential cropping pattern of maize-maize performed well from the view points of yield and production of calorie and protein.”
Claim · model-written summary
About 90% of annual soil erosion occurred in the first four rainy-season months.
Not reportedTaxon
Verbatim
e0“The amount of eroded soil during the first 4-month period in the rainy season was about 90% of the annual amount.”
Claim · model-written summary
Cassava intercropping with upland rice and maize reduced soil erosion.
- Taxon
- CassavaManihot esculentae0
- Treatment
- intercropping of upland rice and maizee0
- Outcome
- amount of soil erosione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cassava cultivation with intercropping of upland rice and maize as the first intercrop reduced the amount of soil erosion.”
Claim · model-written summary
Soil erosion declined appreciably year by year.
Not reportedTaxon
Verbatim
e0“Soil erosion decreased appreciably from year to year.”
Claim · model-written summary
Cassava with rice and maize followed by peanut or soybean was considered suitable for yield and soil fertility in uplands.
- Taxon
- CassavaManihot esculentae0
- Outcome
- Cassava intercropped with upland rice and maize followed by peanut or soybeane0
- Setting
- upland areas with Red-yellow Podzolic soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cassava intercropped with upland rice and maize followed by peanut or soybean was suitable from the view points of crop yield and maintenance of soil fertility in upland areas with Red-yellow Podzolic soil.”
The same questions in other papers
intercropping · soil: physics · Manihot esculenta (cassava)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
3 papers more in this group
See all 7 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.