Claim · model-written summary
Weed N uptake decreased under treatments that gave effective weed control.
- Treatment
- treatments that provided effective control of weedse2
- Interactor
- weedse2weed
- Outcome
- that by weedse2
- Direction
- decreasede2
- Setting
- New Delhie1
Zea maysNot reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleComparatorValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth and yield performance of maize (Zea mays L.)”
e1“A field experiment was conducted during rainy season 2004 and 2005 at New Delhi”
e2“Nitrogen uptake by maize increased while that by weeds decreased under the treatments that provided effective control of weeds”
Title
Ranjeet Singh; Archana Sharma; U.K. Behera The Indian Journal of Agricultural Sciences 2007
Other claims from this paper (19)
- Intervention effect Unchecked weed infestation caused a mean loss of 43.5-46.4% in maize grain yield.
- Intervention effect Stale seed-bed practice reduced weed count by 18.8-34.1% compared with conventional tillage flat bed in 2005.
- Intervention effect Stale seed-bed practice reduced weed dry weight by 21.3% compared with conventional tillage flat bed.
- Intervention effect Stale seed-bed produced the highest maize grain yield (2.90 tonnes/ha) compared with conventional tillage flat bed.
- Intervention effect Stale seed-bed significantly increased maize grain yield by 13.7% compared with conventional tillage flat bed.
- Intervention effect Bed planting systems had similar weed infestation to conventional tillage flat bed.
- Intervention effect Bed planting systems gave a relatively higher maize grain yield (6.9-14.6%) than conventional tillage flat bed.
- Intervention effect Minimum tillage gave the lowest maize yield (2.30-2.60 tonnes/ha), due to poor maize growth associated with higher weed infestation.
- Intervention effect Pre-emergence atrazine gave good early control of the few broad-leaved weed species.
- Intervention effect Pre-emergence atrazine only partially controlled the grassy weeds dominated by Echinochloa colonum.
- Recommendation Supplementation with manual weeding or paraquat directed spray after a month is necessary to achieve season-long weed control in maize.
- Intervention effect Supplementation with manual weeding or paraquat directed spray increased maize productivity.
- Recommendation Growing maize with stale seed-bed and atrazine pre-emergence plus paraquat post-emergence spray is recommended for higher productivity and profitability.
- Intervention effect Unweeded control gave negative returns under all tillage practices (-682 to -1594 Rs/ha).
- Intervention effect Stale seed-bed with atrazine plus paraquat gave the highest net returns per rupee invested (0.565).
- Intervention effect Atrazine with manual weeding gave the second-highest net returns per rupee invested (0.512).
- Association Maize yield was negatively correlated with weed yield (r = -0.937).
- Association Maize N uptake was negatively correlated with weed N uptake (r = -0.958).
- Intervention effect Maize N uptake increased under treatments that gave effective weed control.