Effect of tillage and burial depth and density of seed on viability and seedling emergence of weedy rice

Zhang, Zheng; Gao, Pinglei; Dai, Weimin; Song, Xiaoling; Hu, Feng; Qiang, Sheng

doi:10.1016/s2095-3119(19)62583-9

Cited by 18 publications

(23 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The plowing of rice fields is a common preparatory tillage practice in many areas in the world, as was also demonstrated in a similar survey on rice cultivation techniques adopted in the United States (Kanapeckas et al 2018). Plowing moves the shed O. sativa seeds deep into the soil, which results in a lower weed emergence, while shallow tillage generally concentrates O. sativa seeds close to the soil surface, thus favoring their emergence (Zhang et al 2019).…”

Section: Agronomic Practices and Oryza Sativa Infestation Levelmentioning

confidence: 83%

“…Autumn tillage, after the rice harvest, is carried out on about 60% of Italian rice fields, and plowing is the most common technique (Fogliatto et al 2011). Weed seeds, including those of O. sativa, are more widely distributed through the soil profile after plowing, while minimum tillage keeps seeds on the soil surface or at shallow depths, thus favoring their emergence (Zhang et al 2019).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Relationship between weedy rice (Oryza sativa) infestation level and agronomic practices in Italian rice farms

et al. 2020

View full text Add to dashboard Cite

Weedy rice (Oryza sativa L.) is a troublesome rice (Oryza sativa L.) weed in Italy and in many other rice areas. The objective of this study was to correlate the O. sativa infestation level in northern Italy, the main European rice-growing area, with agricultural practices adopted by farmers by using data obtained from a farmer survey. In 2018 to 2019, a survey was carried out on 98 rice farms chosen to ensure different sizes, different cultivation practices, and variable degrees of O. sativa infestation. The following information was acquired: farm size; area cultivated with Clearfield® varieties; the most-adopted agronomic practices (type of tillage, crop rotation, type of sowing, water management, origin of seeds, adoption of stale seedbed, use of imazamox, presence of O. sativa resistant to imazamox); and level of O. sativa infestation: low (≤5 plants m−2), medium (>5 to 20 plants m−2), and high (>20 plants m−2). The data were analyzed through descriptive statistics and ordinal logistic regression to determine which agronomic practices influenced the level of O. sativa infestation. Farm clustering was also determined through two-step cluster analysis. Rice was cultivated as a monocrop and mainly sown in water, using purchased seeds, in plowed fields. More than half of the farms used the stale seedbed practice, and 63% adopted Clearfield® varieties, while about 45% of the farms reported imazamox-resistant O. sativa. The ordinal logistic regression underlined that use of a stale seedbed was correlated with the infestation level of O. sativa, and the two-step cluster analysis showed that the farms were mainly grouped based on the use of this technique. Most of the farms that used a stale seedbed had higher O. sativa infestation than those that did not use it, meaning that this practice was mainly applied in zones where O. sativa infestations were more serious.

show abstract

Section: Agronomic Practices and Oryza Sativa Infestation Levelmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Relationship between weedy rice (Oryza sativa) infestation level and agronomic practices in Italian rice farms

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Generally, little is known about the storability of buried tree seeds in the soil as a function of mineral soil depth (Toole & Brown 1946, Van et al 2005. Zhang et al (2019) and Mennan (2003) observed for some weed species a trend of reducing seed viability loss with increasing soil depth. This evidence is lacking for tree species of temperate woodlands, thus it deserves specific investigations.…”

Section: Introductionmentioning

confidence: 96%

Is there an effect of storage depth on the persistence of silver birch (Betula pendula Roth) and rowan (Sorbus aucuparia L.) seeds? A seed burial experiment

Tiebel¹,

Huth²,

Wagner³

2021

iForest

View full text Add to dashboard Cite

show abstract

“…California rice growers who practice wet direct seeding do not have the option of changing their planting depths, unlike farmers in the southern United States who practice dry direct seeding. It is important, however, to acknowledge that tillage depth is an important factor in weed suppression in both climates (Zhang et al 2019). Information about seed survivability at various soil tillage depths can be used to determine how deep O. sativa spontanea seeds should be tilled into the soil or whether to implement preplant control options, such as a stale seedbed (Rathore et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Flooding depths and burial effects on seedling emergence of five California weedy rice (Oryza sativa spontanea) accessions

et al. 2022

View full text Add to dashboard Cite

Weedy rice (Oryza sativa f. spontanea Roshev.) has recently become a significant botanical pest in California rice (Oryza sativa L.) production systems. The conspecificity of this pest with cultivated rice, Oryza sativa (L.), negates the use of selective herbicides, rendering the development of non-chemical methods a necessary component of creating management strategies for this weed. Experiments were conducted to determine the emergence and early growth responses of O. sativa spontanea to flooding soil and burial conditions. Treatment combinations of four flooding depths (0, 5, 10, and 15 cm) and four burial depths (1.3, 2.5, 5, and 10 cm) were applied to test the emergence of five O. sativa spontanea accessions as well as ‘M-206’, a commonly used rice cultivar in California, for comparison. Results revealed that burial depth had a significant effect on seedling emergence. There was a 43-91% decrease in emergence between seedlings buried at 1.3 and 2.5 cm depending on the flooding depth and accession, and an absence of emergence from seedlings buried at or below 5 cm. Flooding depth did not affect emergence, but there was a significant interaction between burial and flooding treatments. There was no significant difference between total O. sativa spontanea emergence from the soil and water surfaces regardless of burial or flooding depths, implying that once the various accessions have emerged from the soil they will also emerge from the floodwater. Most accessions had similar total emergence compared to M-206 cultivated rice, but produced more dry weight than M-206 when planted at 1.3 cm in the soil. The results of this experiment can be used to inform stakeholders of the flooding conditions necessary as well as soil burial depths that will promote or inhibit the emergence of California O. sativa spontanea accessions from the weed seedbank.

show abstract

Effect of tillage and burial depth and density of seed on viability and seedling emergence of weedy rice

Cited by 18 publications

References 31 publications

Relationship between weedy rice (Oryza sativa) infestation level and agronomic practices in Italian rice farms

Relationship between weedy rice (Oryza sativa) infestation level and agronomic practices in Italian rice farms

Is there an effect of storage depth on the persistence of silver birch (Betula pendula Roth) and rowan (Sorbus aucuparia L.) seeds? A seed burial experiment

Flooding depths and burial effects on seedling emergence of five California weedy rice (Oryza sativa spontanea) accessions

Contact Info

Product

Resources

About