Abstract
ABSTRACT Amounts of N from green manures not absorbed in the first cycle can be absorbed by the subsequent crops. Therefore, it is important to quantify and monitor the residual effects of green manure to increase the agronomic benefits of its use in cropping systems. Our purpose was to study the residual effect of doses of the Crotalaria juncea green manure applied in broccoli crop in the zucchini-maize succession. This study was carried out in a crop succession system organized in three crops, with seven treatments and four major doses of green manure as 0, 3, 6, and 9 t ha-1. The control treatments consisted of a mineral fertilization, a treatment with 25 t ha-1 compost, and another as absolute control without organic compost or mineral fertilizer. The experimental plot consisted of five rows spaced 0.8 m with 3 m in length. The experimental design was a completely randomized block with four replications in a split-plot scheme in time for growth with variables of adjustment of statistical models by the response surface methodology. With the highest dose of green manure, the yield of zucchini plants was greater than the yield with 25 t ha-1 compost control and similar with mineral fertilizer. As for the maize yield in the dose of 9 t ha-1 green manure, the yield was superior only to absolute control. There was a residual effect of C. juncea mass, which was applied in broccoli crop for growth and yield of zucchini and maize grown in succession. The residual effect is dependent on the amount of weight of C. juncea applied, with the greatest effects in larger doses.
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Claims 5
Claim · model-written summary
At the highest green manure dose, zucchini yield exceeded the compost control.
- Taxon
- zucchini
Cucurbita pepo subsp. pepoe0 - Treatment
- highest dose of green manuree0
- Outcome
- yielde0
- Direction
- greatere0
- Comparator
- 25 t ha-1 compost controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the highest dose of green manure, the yield of zucchini plants was greater than the yield with 25 t ha-1 compost control”
Claim · model-written summary
At the highest green manure dose, zucchini yield was similar to mineral fertilizer.
- Taxon
- zucchiniCucurbita pepo subsp. pepoe0
- Treatment
- highest dose of green manuree0
- Outcome
- yielde0
- Direction
- similare0
- Comparator
- mineral fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With the highest dose of green manure, the yield of zucchini plants was greater than the yield with 25 t ha-1 compost control and similar with mineral fertilizer”
Claim · model-written summary
At 9 t ha-1, green manure increased maize yield only relative to the absolute control.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As for the maize yield in the dose of 9 t ha-1 green manure, the yield was superior only to absolute control”
Claim · model-written summary
Residual Crotalaria juncea increased succeeding zucchini growth and yield, with larger effects at larger applied masses.
- Taxon
- zucchiniCucurbita pepo subsp. pepoe0
- Treatment
- C. juncea masse0
- Outcome
- growth and yield of zucchinie0
- Direction
- greatest effects in larger dosese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a residual effect of C. juncea mass, which was applied in broccoli crop for growth and yield of zucchini and maize grown in succession. The residual effect is dependent on the amount of weight of C. juncea applied, with the greatest effects in larger doses”
Claim · model-written summary
Residual Crotalaria juncea affected succeeding maize growth and yield, with larger effects at larger applied masses.
- Treatment
- C. juncea masse0
- Outcome
- growth and yield of zucchini and maizee0
- Direction
- greatest effects in larger dosese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a residual effect of C. juncea mass, which was applied in broccoli crop for growth and yield of zucchini and maize grown in succession. The residual effect is dependent on the amount of weight of C. juncea applied, with the greatest effects in larger doses”
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