Effects of High Nitrogen Fertilization and Lodging on Rice Yield<sup>1</sup>

Basak, M. N.; Sen, Sidharth; Bhattacharjee, P. K.

doi:10.2134/agronj1962.00021962005400060003x

Cited by 16 publications

(12 citation statements)

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“…So well established is this fact that it needs no further verification. Good examples of experimental evidence, however, can be found in Chang (1964), Jennings and Sornchai (1964), Singh and Takahashi (1962), Umali, Castillo, and Castillo (1956), and Basak, Sen, and Bhattacharjee (1962).…”

Section: Morphological Characteristics Associated With Responsivementioning

confidence: 99%

Plant Morphology and Stand Geometry in Relation to Nitrogen

Chandler

2015

Physiological Aspects of Crop Yield

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Section: Morphological Characteristics Associated With Responsivementioning

confidence: 99%

Plant Morphology and Stand Geometry in Relation to Nitrogen

Chandler

2015

Physiological Aspects of Crop Yield

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“…However, variety trial data indicates that many modern, high-yielding cultivars are highly-susceptible to lodging . High of N fertilizer are oft en associated with increased lodging (Basak et al, 1962), but limiting N fertilization in an eff ort to minimize lodging may severely limit the yield potential of modern rice cultivars . Alternative management strategies to limit plant height and reduce lodging without limiting N fertilization rates may be benefi cial to rice production systems.…”

mentioning

confidence: 99%

Evaluation of Trinexapac‐Ethyl and Nitrogen Management to Minimize Lodging in Rice

et al. 2016

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Rice (Oryza sativa L.) is an important crop in the midsouthern United States. However, some high‐yielding cultivars are highly susceptible to lodging. The plant growth regulator, trinexapac‐ethyl (TE), has been shown to decrease lodging in upland cereal crops, but data are scarce that demonstrate rice response to TE. The objective of this study was to determine the effect of TE on rice plant height, lodging, and grain yield. Experiments were established at multiple locations during the 2012 and 2013 growing seasons in Mississippi. Trinexapac‐ethyl was applied to a lodging‐susceptible rice cultivar at 12, 24, and 48 g a.i. ha−1 at two timings: panicle differentiation (R1) and R1 + 14 d. Rice response to TE was determined for rice that received 100% of N applied at V3 and rice that received a two‐way split N strategy (75% N at V3 and 25% at R1). On both clay and silt‐loam soils all rates of TE reduced plant height and lodging compared to nontreated rice. The effect of TE on rice grain yield was variable. On silt‐loam soils 12 g a.i. ha−1 TE resulted in rice grain yield similar to nontreated rice when applied at R1, but decreased grain yield when applied to rice at R1+ 14 d. The 48 kg a.i. ha−1 rate decreased rice grain yield on both soil textures. The results of this study indicate that trinexapac‐ethyl may be a useful tool to manage lodging, but further research is needed refine TE use guidelines in rice. Trinexapac‐ethyl decreased rice plant height and lodging on both clay and silt loam soils. Trinexapac‐ethyl at 12 g a.i. ha−1 did not decrease grain yield when applied at panicle differentiation on silt loam soils. Grain yield response to trinexapac‐ethyl varied by soil texture and N management strategy.

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“…And, the measurement for one culm was finished within ten minutes. The relationship between the deformation of the culm and the applied force, namely, the bending moment-curvature diagrams is approximately expressed by two equations [5] and [6].…”

Section: Ja-·da=o Ja-7j·da=mmentioning

confidence: 99%

“…When the value of bending moment is, respectively, as follows: [5] ( [6] M., is the maximum bending moment for a certain culm, and K, and K .. are the constant which are determined by the property of the the culm.…”

Section: Ja-·da=o Ja-7j·da=mmentioning

confidence: 99%

“…Therefore, lodging has been an important problem in crop culture. It usually occurs when excessive fertilizers, especially nitrogen, are supplied in the hope of gaining much grain (6,17,43,48,59,71). As lodging is such a serious question in agriculture, investigations into the cause of lodging have been published from as far as the second half of the nineteen century, and extensive research has been done since then.…”

mentioning

confidence: 99%

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