Response of Integrated Weed Management Practices on Growth and Yield of Pigeonpea (Cajanus cajan (L.) Millsp.)

Pigeonpea is cultivated as a major source of protein for poor farmers with reduced yields. The low yield of pigeonpea is due to faulty agro techniques. The present investigation was conducted to see the effect of integrated agro-techniques on growth and growth attributes of pigeonpea and designed with block randomization having eight treatments viz., integrated nutrient management (INM), integrated weed management (IWM), integrated pest management (IPM) and its combos at AICRP experimental farm, College of Agriculture Tripura. Growth and yield attributes differed significantly due to integrated agro-techniques with poor weed population in IWM. The net come was highest in INM+IWM+IPM (Rs. 49243.85 and Rs. 47757.63). Results revealed that INM+IWM+IPM yielded higher followed by INM+IWM however each of them was statistically at par throughout the study. Economics led INM+IWM as best treatment than the combination of 3 agro-techniques, where additional price occurred.

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Effect of integrated weed management practices on performance of dry direct seeded rice (Oryza sativa L.)

Agronomy Journal of Nepal ◽

10.3126/ajn.v3i0.9006 ◽

2013 ◽

Vol 3 ◽

pp. 53-63 ◽

Cited By ~ 3

Author(s):

KP Bhurer ◽

DN Yadav ◽

JK Ladha ◽

RB Thapa ◽

K Pandey

Keyword(s):

Weed Management ◽

Management Practices ◽

Growth And Yield ◽

Integrated Weed Management ◽

Research Station ◽

Yield Attributes ◽

Net Return ◽

Free Treatment ◽

Direct Seeded ◽

Hand Weeding

Weeds are serious problem in dry direct seeded rice (DDSR). A field experiment was conducted during rainy seasons of 2010 and 2011 at research farm of the Regional Agricultural Research Station (RARS) Parwanipur, to study the effect of integrated weed management practices on the performance of dry direct seeded rice. Ten treatment combinations viz; weedy, weed free (weekly), Pendimethalin fb (followed by) Bispyribac, Pendimethalin fb two hand weeding, Stale seedbed fb Bispyribac, Stale seedbed fb Pendimethalin fb Bispyribac, Mulch 4 t/ha fb Bispyribac fb one hand weeding, Stale seedbed fb mulch 4 t/ha fb Bispyribac, Pendimethalin and Sesbania co-culture fb 2,4-D Na salt fb one hand weeding and Pendimethalin fb 2,4-D fb one hand weeding were tested in a randomized complete block design and replicated thrice. Observations were taken on weed, plant growth and yield attributes, yield, and socio-economic parameters. All weed control treatments significantly reduced the weed density and dry weight of weed resulting significant increase in yield of DSR over weedy check in both years. Weed free treatment resulted the highest yield, however, it was not economical due to high cost of cultivation. The use of Pendimethalin fb 2,4-D fb one hand weeding produced yield (5161 in 2010 and 6160 kg/ha in 2011) which were statistically at par with yield (5305 in 2010 and 6319 kg/ha in 2011) obtained under the weed free treatment. Further, the highest benefit cost ratio (CBR) 1.77 and 2.22 and net return Rs 47700 and 75084/ha during 2010 and 2011, respectively, were obtained under this treatment indicating its superiority over other treatments. The grain yield, yield attributing characters viz. panicles per m2, panicle weight, filled grain per panicle, thousand grain weight as influenced by different weed management practices revealed that higher yield resulted from weed free plot followed by Pendimethalin followed by two hand weeding and Pendimethalin followed by 2,4-D followed by one hand weeding. However, the net return per unit investment resulted highest in Pendimethalin followed by 2,4-D followed by one hand weeding. This proved that amid increasing wage rate and labor scarcity integrated weed management through Pendimethalin 30 EC (stomp) @ 1 kg a. i./ha as pre- emergence herbicide application followed by 2,4-D sodium salt 80 WP @ 0.5 kg a.i./ha followed by one hand weeding or stale seed bed followed by Pendimethalin 30 EC (stomp) @ 1 kg a. i./ha followed by Bispyribac (nominee gold) @ 25 g a. i./ha 10 % @ 200 ml/ha at 20 days of seeding resulted best alternative for manual hand weeding practices giving higher net return per unit investment. Agronomy Journal of Nepal (Agron JN) Vol. 3. 2013, Page 53-63 DOI: http://dx.doi.org/10.3126/ajn.v3i0.9006

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Integrated weed management practices and sustainable food production among farmers in Kwara State, Nigeria

Open Agriculture ◽

10.1515/opag-2021-0221 ◽

2021 ◽

Vol 6 (1) ◽

pp. 124-134

Author(s):

Emmanuel Oyamedan Imoloame ◽

Ibrahim Folorunsho Ayanda ◽

Olayinka Jelili Yusuf

Keyword(s):

Weed Management ◽

Food Production ◽

Management Practices ◽

Sampling Technique ◽

Structured Interview ◽

Integrated Weed Management ◽

Sustainable Food ◽

Arable Crops ◽

Multi Stage ◽

Self Sufficiency

Abstract A survey was conducted in the Kwara State of Nigeria to study the integrated weed management (IWM) practices by farmers. This was in view of the poor weed management practices adopted by farmers, which is a major factor responsible for low yields of many arable crops in Kwara State. A multi-stage sampling technique was used to select a sample size of 480 respondents, and a structured interview schedule was used to elicit information from them. Data obtained were analyzed using descriptive statistics. Factor analysis was also carried out to examine the perception of farmers’ benefits of IWM. Results showed that the majority of farmers (29.4%) were youths, married (89.1%), and involved in medium-scale farming (47.2%). Furthermore, 50.8% of the farmers had primary or secondary education. Although farmers use different weed control methods, more than half of them (54.7%) use herbicides. Most farmers (92.6%) are engaged in the use of IWM, However, 73.5% of them use a combination of herbicides and hoe weeding. Although not properly practiced, farmers perceived IWM as having socio-environmental (29.229%) and techno-efficacious (23.495%) benefits over either hoe weeding or herbicides used alone. The findings suggest a need to train farmers on all aspects of IWM to achieve self-sufficiency in food production in Kwara State.

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Upland rice growth and yield response to weed management practices under rainfed conditions in Morogoro, Tanzania

African Journal of Agricultural Research ◽

10.5897/ajar2016.11771 ◽

2017 ◽

Vol 12 (10) ◽

pp. 829-840 ◽

Cited By ~ 1

Author(s):

S. Kolleh David ◽

P. Sibuga Kallunde ◽

F. King Charles

Keyword(s):

Weed Management ◽

Management Practices ◽

Upland Rice ◽

Growth And Yield ◽

Yield Response ◽

Rice Growth ◽

Rainfed Conditions

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Sensitivity of imidazolinone-resistant red rice (Oryza sativa L.) to glyphosate and glufosinate

Ciência Rural ◽

10.1590/0103-8478cr20140896 ◽

2015 ◽

Vol 45 (9) ◽

pp. 1557-1563 ◽

Cited By ~ 4

Author(s):

Guilherme Vestena Cassol ◽

Luis Antonio de Avila ◽

Carla Rejane Zemolin ◽

Andrey Piveta ◽

Dirceu Agostinetto ◽

...

Keyword(s):

Weed Management ◽

Management Practices ◽

Oryza Sativa L ◽

Dry Weight ◽

Integrated Weed Management ◽

Rio Grande Do Sul ◽

Red Rice ◽

Resistance Evolution ◽

Logistic Analysis ◽

Imidazolinone Herbicides

Dose-response experiments were carried out to evaluate the sensitivity of imidazolinone-resistant red rice to nonselective herbicides currently used in rice-soybean rotation in Rio Grande do Sul. Two red rice biotypes previously identified as resistant and susceptible to the imidazolinone herbicides were treated with imazapic plus imazapic, glyphosate and glufosinate under nine herbicide rates. A non-linear log-logistic analysis was used to estimate the herbicide rate that provided 50% red rice control and dry weight reduction (GR50). Imidazolinone-resistant red rice exhibited greater GR50 values than imidazolinone-susceptible biotype for imazapyr plus imazapic. In contrast, both imidazolinone-resistant and susceptible red rice showed similar GR50values for glyphosate and glufosinate. These results indicate that glyphosate and glufosinate effectively control imidazolinone-resistant red rice at similar herbicide rates used to control imidazolinone-susceptible; however, integrated weed management practices must be adopted in rice-soybean rotation to delay resistance evolution of red rice populations to glyphosate and glufosinate

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