Abstract
The present research entitled “Effect of herbicidal weed management on growth, yield attributes and productivity of Lathyrus (Lathyrus sativus L.) for Chhattisgarh" was conducted during Rabi season of 2020-21 at the Instructional Farm, College of Agriculture, Raipur (CG). The soil of experimental site was sandy loam, poor in available nitrogen, medium in available phosphorus and rich in potassium contents with neutral pH. The experiment was laid out in Randomized Block Design with three replications. The treatments consisted of fifteen weed management practices viz, T1: Oxadiargyl @ 80 g/ha 0-3 DAS, T2: Metribuzin @ 350 g/ha 0-3 DAS, T3: Topramezone @ 19.35 g/ha 2-3 Leaf stage of weed, T4: Topramezone @ 25.8 g/ha 2-3 Leaf stage of weed, T5: Topramezone @ 32.25 g/ha 2-3 Leaf stage of weed, T6: Topramezone (directed application) @ 25.8 g/ha 5-6 Leaf stage of weed, T7: Fluzifop-p-butyl 13.4 % + Fomesafen 11.1 % (directed application) @ 250 g/ha 5-6 Leaf stage of weed, T8: Metribuzin @ 350g/ha fb Topramezone @ 25.8 g/ha at 0-3 DAS & 2-3 Leaf stage of weed, T9: Metribuzin @ 350g/ha fb Metribuzin @ 350 g/ha at 0-3 DAS & 5-6 Leaf stage of weed, T10: Fluzifop-p-butyl 13.4 % + Fomesafen 11.1 % @ 250 g/ha 2-3 Leaf stage of weed, T11: Sodium acifluorfen 16.5 %+ clodinafop proparzyl 18 % (directed application) @ 187.5g/ha 2-3 leaf stage of weed T12: Mertibuzin (directed application) @ 350 g/ha 2-3 leaf stage of weed, T13: Metsulfuron (directed application) @ 4 g/ha 2-3 leaf stage of weed, T14: Hand weeding twice 20 & 40 DAS and T15: Unweeded control. The Lathyrus variety Prateek was sown on November 15, 2020 and harvested on March 8, 2021. The experimental finding showed that the growth characteristics viz. plant population, plant height, number of branches/plant, dry weight accumulation (g/plant), number of nodules/plant, dry weight nodules/plant and crop growth rate and yield attributes viz., number of seeds/plant, number of seeds/pod, seed yield, Stover yield, 100 seed weight and harvest index were found significantly superior in Hand weeding twice 20 & 40 DAS (T14), over other weed management practices but was at par with treatment T9: Metribuzin @ 350g/ha fb Metribuzin @ 350g/ha at 0-3 DAS & 5-6 Leaf stage of weed. The lower values of above characters have been observed in the unwedded control (T15) followed by Fluzifop-p-butyl 13.4 % + Fomesafen 11.1 % @ 250 g/ha 2-3 Leaf stage of weed (T10). Predominant weed species Medicago denticulate L., Cichorium intybus L., Chenopodium album L., Melilotus indica L, Alternanthera sessilis L, Echinochloa colona L. and Physallis minima L, intensified in the experimental field. Hand weeding twice 20 & 40 DAS (T14) followed by Topramezone @ 32.25 g/ha 2-3 Leaf stage of weed (T5) observed in effectively reducing weed density, weed dry matter accumulation, lowest weed growth rate and thus providing maximum weed control efficiency and weed control index. While, the weed index was higher at Unwedded control (T15). In term of economic returns, the gross returns and net return was maximum under Hand weeding twice 20 & 40 DAS (T14) followed Metribuzin @ 350 g/ha fb Metribuzin @ 350 g/ha at 0-3 DAS & 5-6 Leaf stage of weed (T9), whereas, net return and B: C ratio was maximum under Metribuzin @ 350 g/ha fb Metribuzin @ 350 g/ha at 0-3 DAS & 5-6 Leaf stage of weed (T9). This might be because of higher cost of cultivation due to continuous frequent weeding in Hand weeding twice 20 & 40 DAS plot (T14).
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Claims 11
Claim · model-written summary
Hand weeding twice gave significantly superior growth characteristics of Lathyrus compared with other weed management practices.
- Treatment
- Hand weeding twice 20 & 40 DASe2
- Outcome
- growth characteristicse1
- Direction
- significantly superiore2
- Qualifier
- at par with treatment T9e2
- Comparator
- other weed management practicese2
LathyrusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lathyrus (Lathyrus sativus L.) for Chhattisgarh”
e1“the growth characteristics viz. plant population, plant height, number of branches/plant, dry weight accumulation (g/plant), number of nodules/plant, dry weight nodules/plant and crop growth rate”
e2“were found significantly superior in Hand weeding twice 20 & 40 DAS (T14), over other weed management practices but was at par with treatment T9”
Claim · model-written summary
Hand weeding twice gave significantly superior yield attributes and seed yield of Lathyrus compared with other weed management practices.
- Treatment
- Hand weeding twice 20 & 40 DASe2
- Outcome
- yield attributese1
- Direction
- significantly superiore2
- Qualifier
- at par with treatment T9e2
- Comparator
- other weed management practicese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lathyrus (Lathyrus sativus L.) for Chhattisgarh”
e1“yield attributes viz., number of seeds/plant, number of seeds/pod, seed yield, Stover yield, 100 seed weight and harvest index”
e2“were found significantly superior in Hand weeding twice 20 & 40 DAS (T14), over other weed management practices but was at par with treatment T9”
Claim · model-written summary
Hand weeding twice reduced weed density.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lathyrus (Lathyrus sativus L.) for Chhattisgarh”
e2“Hand weeding twice 20 & 40 DAS (T14) followed by Topramezone @ 32.25 g/ha 2-3 Leaf stage of weed (T5) observed in effectively reducing weed density, weed dry matter accumulation, lowest weed growth rate and thus providing maximum weed control efficiency and weed control index”
Claim · model-written summary
Hand weeding twice reduced weed dry matter accumulation.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lathyrus (Lathyrus sativus L.) for Chhattisgarh”
e2“Hand weeding twice 20 & 40 DAS (T14) followed by Topramezone @ 32.25 g/ha 2-3 Leaf stage of weed (T5) observed in effectively reducing weed density, weed dry matter accumulation, lowest weed growth rate and thus providing maximum weed control efficiency and weed control index”
Claim · model-written summary
Hand weeding twice gave the lowest weed growth rate.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lathyrus (Lathyrus sativus L.) for Chhattisgarh”
e2“Hand weeding twice 20 & 40 DAS (T14) followed by Topramezone @ 32.25 g/ha 2-3 Leaf stage of weed (T5) observed in effectively reducing weed density, weed dry matter accumulation, lowest weed growth rate and thus providing maximum weed control efficiency and weed control index”
Claim · model-written summary
Hand weeding twice gave the maximum weed control efficiency and weed control index.
- Treatment
- Hand weeding twice 20 & 40 DASe2
- Outcome
- weed control efficiency and weed control indexe2
- Direction
- maximume2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lathyrus (Lathyrus sativus L.) for Chhattisgarh”
e2“Hand weeding twice 20 & 40 DAS (T14) followed by Topramezone @ 32.25 g/ha 2-3 Leaf stage of weed (T5) observed in effectively reducing weed density, weed dry matter accumulation, lowest weed growth rate and thus providing maximum weed control efficiency and weed control index”
Claim · model-written summary
The unweeded control gave lower values of the growth and yield characters of Lathyrus.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lathyrus (Lathyrus sativus L.) for Chhattisgarh”
e3“The lower values of above characters have been observed in the unwedded control (T15) followed by Fluzifop-p-butyl 13.4 % + Fomesafen 11.1 % @ 250 g/ha 2-3 Leaf stage of weed (T10)”
Claim · model-written summary
The weed index was higher in the unweeded control.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lathyrus (Lathyrus sativus L.) for Chhattisgarh”
e4“the weed index was higher at Unwedded control (T15)”
Claim · model-written summary
Hand weeding twice gave the maximum gross returns and net return.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lathyrus (Lathyrus sativus L.) for Chhattisgarh”
e5“the gross returns and net return was maximum under Hand weeding twice 20 & 40 DAS (T14) followed Metribuzin @ 350 g/ha fb Metribuzin @ 350 g/ha at 0-3 DAS & 5-6 Leaf stage of weed (T9)”
Claim · model-written summary
Metribuzin applied twice gave the maximum net return and B:C ratio.
- Treatment
- Metribuzin @ 350 g/ha fb Metribuzin @ 350 g/ha at 0-3 DAS & 5-6 Leaf stage of weede6
- Outcome
- net return and B: C ratioe6
- Direction
- maximume6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lathyrus (Lathyrus sativus L.) for Chhattisgarh”
e6“whereas, net return and B: C ratio was maximum under Metribuzin @ 350 g/ha fb Metribuzin @ 350 g/ha at 0-3 DAS & 5-6 Leaf stage of weed (T9)”
Claim · model-written summary
Predominant weed species, including Medicago denticulate and Cichorium intybus, intensified in the Lathyrus field.
- Interactor
- Medicago denticulate L.e7weed
- Second interactor
- Cichorium intybus L.
Cichorium intybuse7weed - Outcome
- predominant weed speciese7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lathyrus (Lathyrus sativus L.) for Chhattisgarh”
e7“Predominant weed species Medicago denticulate L., Cichorium intybus L., Chenopodium album L., Melilotus indica L, Alternanthera sessilis L, Echinochloa colona L. and Physallis minima L, intensified in the experimental field”
The same questions in other papers
metribuzin · yield · LathyrusResults agree
1 paper in the same direction as this paper
- positive
herbicide · yield · LathyrusPositive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
herbicide · growth · LathyrusResults agree
1 paper in the same direction as this paper
- positive
herbicide · weed · LathyrusResults agree
1 paper in the same direction as this paper
- positive
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.