Weeding Frequencies Decreased Rice–Weed Competition and Increased Rice N Uptake in Organic Paddy Field

Maimunah, Margi Asih; Kautsar, Valensi; Bimantara, Putu Oki; Kimani, Samuel Munyaka; Torita, Ren; Tawaraya, Keitaro; Murayama, Hideki; Utami, Sri Nuryani Hidayah; Purwanto, Benito Heru; Cheng, Weiguo

doi:10.3390/agronomy11101904

Cited by 11 publications

(3 citation statements)

References 30 publications

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“…In this study, NH 4 + and NO 3 could be produced from the remaining rice straw and weeds decomposition. In line with Maimunah et al (2021), adding more weeds (in weeding practical) increased the N concentration of both rice and weeds. Then, the returns of plants biomass could support a high amount of NH 4 + in the organic fields.…”

Section: Soil Carbon and Nitrogenmentioning

confidence: 77%

Weeding Frequencies Improve Soil Available Nitrogen in Organic Paddy Field

et al. 2022

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Appropriate weeds control is needed against weeds constraints in field, especially the organic field. With the appropriate management, weeding would benefit the organic field not only in reducing weeds but also in increasing nitrogen (N) availability in organic rice fields. This research aims to observe soil available N changes affected by weeding frequencies in organic paddy fields. Treatments applied were five weeding frequencies (WF) such as 0 WF, 2 WF, 4 WF, 6 WF, and 8 WF, to study the effect of various weeding frequencies on soil total N and available N ( NH4+ and NO3–) in the organic rice field. The soil in the conventional field was analyzed as a comparison to organic field soil. The results showed that soil C and N contents are similar in all treatments. Meanwhile, 6 WF performed the highest soil NH4+ among organic plots (10.36 mg N kg–1) and 8 WF enhanced soil NO3– to the highest average among all plots (10.12 mg N kg–1). The treatment of 6 WF and 8 WF also maintain the increase of soil NH4+ to 51 days after transplanting (DAT), meanwhile 0 WF, 2 WF, and 4 WF decreased after 40 DAT. Water samples from fields inlet-outlet and river showed that NH4+ content found in water sample was higher than NO3–. We concluded that the more frequencies of weeding applied to organic fields potentially preserved soil inorganic N longer, which is very important in supporting rice growth.

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Section: Soil Carbon and Nitrogenmentioning

confidence: 77%

Weeding Frequencies Improve Soil Available Nitrogen in Organic Paddy Field

et al. 2022

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“…The weeds found in this study were quite different from those usually found in a study. Common weeds that grow in paddy fields include Echinochloa cruss galli, Schoenoplectus juncoides, and Monochoria vaginalis which can reduce biomass by 79% per square meter (Maimunah et. al., 2021).…”

Section: Resultsmentioning

confidence: 99%

The Effect of Weed Management on Seed Banks in Paddy Rice Fields

Sumekar

Widayat

2021

Preprint

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Weeds are one of the problems in rice plants, so the presence of weeds in rice fields must be controlled. Different ways of managing weeds on agricultural land can affect the seed bank of weeds in the soil. This study aims to determine differences in weed seed banks due to differences in weed management, especially the use of herbicides in lowland rice. The study was conducted at the Agricultural Training and Development Research Center, Faculty of Agriculture, Padjadjaran University, Bandung Regency, Indonesia from May–July 2020. The study used a paddy field plot consisting of intensive, less intensive use of herbicides and non-herbicide use. This research was conducted with survey and descriptive methods to see the type and composition of weeds at a certain depth and to see differences in seed banks. Observations were made including analysis of weed vegetation, community coefficients, weed diversity, weed dominance and differences in seed bank from depth. The results showed that there were 7 weed species found, namely Rorippa palustris, Monochoria vaginalis, Leptochloa chinensis, Echinochloa crus-galli, Eclipta prostate, Lindernia procumbens, and Marchantia polymorpha. Weed management with herbicides is proven to reduce weed populations that grow.

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“…Weed control after the critical period did not result in any positive effect on the growth and development of the crop [17]. There is evidence that the critical period exists during which weeds should be controlled to prevent losses [18]. Weeding frequencies had an impact on several conditions in both rice and weeds.…”

Section: Critical Period Of Crop Weed Competetion In Transplanted Ricementioning

confidence: 95%

A Review on Integrated Weed Management in Transplanted Rice

Yakadri

Suvidh

Vaishnav

2022

IJPSS

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Rice plays a pivotal role in agrarian economy of the most of the Asian and South east Asian nations particularly India. Transplanted rice crop suffers much from biotic production constraints among which weed competition is the important one. The reduction in paddy yield ranges from 9-51 per cent due to infestation of wide range of weed species viz. grasses, sedges and broadleaved weeds. The severity of yield loss is aggravated further when weed infestation coincides with critical period of rice growth depriving it from moisture, nutrients, sunlight and acting as alternate host to some pests and diseases. The cost of weed management in transplanted rice is higher than other operations due to exorbitant wage rate combining with low efficiency moreover due to scarcity of labour during peak period, weeding operation has become a cumbersome, time consuming and costly affair for rice farmers. Therefore, herbicide technology offers a mutual inclusive method of selective and economical control of weeds right from the beginning and forms a major component of integrated weed management of rice farming for reaping bumper yield.

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Weeding Frequencies Decreased Rice–Weed Competition and Increased Rice N Uptake in Organic Paddy Field

Cited by 11 publications

References 30 publications

Weeding Frequencies Improve Soil Available Nitrogen in Organic Paddy Field

Weeding Frequencies Improve Soil Available Nitrogen in Organic Paddy Field

The Effect of Weed Management on Seed Banks in Paddy Rice Fields

A Review on Integrated Weed Management in Transplanted Rice

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