Abstract
A field experiment was conducted to assess the effect of chemical herbicides on nutrient uptake, yield and economics of maize (Zea mays L.) maize during kharif season of 2013 at the Crop Research Centre, Chirori of Sardar Vallabhbhai Patel University of Agriculture and Technology; Meerut, Uttar Pradesh (India). The results revealed that the among chemical methods of weed control, the maximum uptake of N and P in maize grains was observed with Alachlor+Metribuzin @ 750+375 g ha-1 (T6) and the maximum K uptake by maize grains was observed with Atrazine+Pendimethalin @ 750+500 g ha-1 (T7) and maximum N, P and K uptake in maize stover was observed with Atrazine+Pendimethalin @ 750+500 g ha-1 (T7) along with grain yield (q ha-1), stover yield (q ha-1) as well as harvest index, respectively. The minimum uptake of N, P and K in maize grain and stover was observed under weedy check along with grain yield (q ha-1 ), stover yield (q ha-1) as well as harvest index, respectively. Protein content in maize grain found highest in weed free (T11) (8.7%). The higher dry weight, NPK content and uptake by weed under Atrazine+2, 4-D @ 500+500 g ha-1 (T8) and the higher weed index was found under Sesbania (BC)+2,4-D @ 500 g ha-1 30 DAS (T9) treatment. The higher gross return, net return and B:C ratio was observed under Atrazine+Pendimethalin @ 750+500 g ha-1 (T7). These values were very close to weed free treatment. The per cent increase in grains and stover yield was to the tune of 107.14 and 57.26 as compared to weedy check.
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Claims 11
Claim · model-written summary
Alachlor+Metribuzin gave the maximum N and P uptake in maize grain among chemical weed control methods.
- Treatment
- Alachlor+Metribuzin @ 750+375 g ha-1 (T6)e1
- Outcome
- uptake of N and P in maize grainse1
- Direction
- maximume1
- Comparator
- among chemical methods of weed controle1
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“among chemical methods of weed control, the maximum uptake of N and P in maize grains was observed with Alachlor+Metribuzin @ 750+375 g ha-1 (T6)”
e0“to assess the effect of chemical herbicides on nutrient uptake, yield and economics of maize (Zea mays L.)”
Claim · model-written summary
Atrazine+Pendimethalin gave the maximum K uptake by maize grain among chemical weed control methods.
- Treatment
- Atrazine+Pendimethalin @ 750+500 g ha-1 (T7)e2
- Outcome
- K uptake by maize grainse2
- Direction
- maximume2
- Comparator
- among chemical methods of weed controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“among chemical methods of weed control, the maximum uptake of N and P in maize grains”
e2“the maximum K uptake by maize grains was observed with Atrazine+Pendimethalin @ 750+500 g ha-1 (T7)”
e0“to assess the effect of chemical herbicides on nutrient uptake, yield and economics of maize (Zea mays L.)”
Claim · model-written summary
Atrazine+Pendimethalin gave the maximum N, P and K uptake in maize stover among chemical weed control methods.
- Treatment
- Atrazine+Pendimethalin @ 750+500 g ha-1 (T7)e3
- Outcome
- N, P and K uptake in maize stovere3
- Direction
- maximume3
- Comparator
- among chemical methods of weed controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“among chemical methods of weed control, the maximum uptake of N and P in maize grains”
e3“maximum N, P and K uptake in maize stover was observed with Atrazine+Pendimethalin @ 750+500 g ha-1 (T7)”
e0“to assess the effect of chemical herbicides on nutrient uptake, yield and economics of maize (Zea mays L.)”
Claim · model-written summary
Atrazine+Pendimethalin gave the maximum grain yield and stover yield among chemical weed control methods.
- Treatment
- Atrazine+Pendimethalin @ 750+500 g ha-1 (T7)e3
- Outcome
- grain yield (q ha-1), stover yield (q ha-1)e5
- Direction
- maximume3
- Comparator
- among chemical methods of weed controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“maximum N, P and K uptake in maize stover was observed with Atrazine+Pendimethalin @ 750+500 g ha-1 (T7)”
e5“along with grain yield (q ha-1), stover yield (q ha-1) as well as harvest index, respectively”
e1“among chemical methods of weed control”
e0“to assess the effect of chemical herbicides on nutrient uptake, yield and economics of maize (Zea mays L.)”
Claim · model-written summary
The weedy check gave the minimum N, P and K uptake in maize grain and stover.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The minimum uptake of N, P and K in maize grain and stover was observed under weedy check”
e0“to assess the effect of chemical herbicides on nutrient uptake, yield and economics of maize (Zea mays L.)”
Claim · model-written summary
Weed free treatment gave the highest protein content in maize grain (8.7%).
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Protein content in maize grain found highest in weed free (T11) (8.7%)”
e0“to assess the effect of chemical herbicides on nutrient uptake, yield and economics of maize (Zea mays L.)”
Claim · model-written summary
Atrazine+2,4-D increased the dry weight, NPK content and uptake of the weed.
- Treatment
- Atrazine+2, 4-D @ 500+500 g ha-1 (T8)e6
- Interactor
- weede6weed
- Outcome
- dry weight, NPK content and uptake by weede6
- Direction
- highere6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The higher dry weight, NPK content and uptake by weed under Atrazine+2, 4-D @ 500+500 g ha-1 (T8)”
e0“to assess the effect of chemical herbicides on nutrient uptake, yield and economics of maize (Zea mays L.)”
Claim · model-written summary
Sesbania with 2,4-D 30 DAS gave the higher weed index in maize.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“the higher weed index was found under Sesbania (BC)+2,4-D @ 500 g ha-1 30 DAS (T9) treatment”
e0“to assess the effect of chemical herbicides on nutrient uptake, yield and economics of maize (Zea mays L.)”
Claim · model-written summary
Atrazine+Pendimethalin gave the higher gross return, net return and B:C ratio.
- Treatment
- Atrazine+Pendimethalin @ 750+500 g ha-1 (T7)e4
- Outcome
- gross return, net return and B:C ratioe4
- Direction
- highere4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The higher gross return, net return and B:C ratio was observed under Atrazine+Pendimethalin @ 750+500 g ha-1 (T7)”
e0“to assess the effect of chemical herbicides on nutrient uptake, yield and economics of maize (Zea mays L.)”
Claim · model-written summary
The gross return, net return and B:C ratio under Atrazine+Pendimethalin were very close to the weed free treatment.
- Treatment
- Atrazine+Pendimethalin @ 750+500 g ha-1 (T7)e4
- Outcome
- gross return, net return and B:C ratioe4
- Direction
- very closee5
- Comparator
- weed free treatmente5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The higher gross return, net return and B:C ratio was observed under Atrazine+Pendimethalin @ 750+500 g ha-1 (T7)”
e5“These values were very close to weed free treatment.”
e0“to assess the effect of chemical herbicides on nutrient uptake, yield and economics of maize (Zea mays L.)”
Claim · model-written summary
Grain and stover yield increased by 107.14 and 57.26 per cent compared with the weedy check.
- Treatment
- chemical herbicidese0
- Outcome
- The per cent increase in grains and stover yielde6
- Direction
- increasee6
- Value
- 107.14 and 57.26e6
- Comparator
- weedy checke6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The per cent increase in grains and stover yield was to the tune of 107.14 and 57.26 as compared to weedy check”
e0“to assess the effect of chemical herbicides on nutrient uptake, yield and economics of maize (Zea mays L.)”
The same questions in other papers
Sesbania · weed · Zea mays (maize)Positive and negative results
2 in the opposite direction
- positive
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2,4-D · weed · Zea mays (maize)Positive and negative results
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- negative
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499 papers in the same direction as this paper · 127 in the opposite direction · 24 reporting no difference from an alternative
- negative
- negative
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See all 651 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.