Physiological and yield responses of field-grown cotton to application of urea with the urease inhibitor NBPT and the nitrification inhibitor DCD

Kawakami, Eduardo M.; Oosterhuis, Derrick M.; Snider, John L.; Mozaffari, M.

doi:10.1016/j.eja.2012.06.005

Cited by 64 publications

(48 citation statements)

References 48 publications

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“…Many reports showed that it could increase grain yield in rice, wheat, corn and so on (McKenzie et al, 2010;Kawakami et al, 2012;Liu et al, 2014). In our study, the grain yield of rice in NBPT with urea increased than no NBPT by 11.9-33.0% and 8.4-29.7%, and the straw increased by 3.5-24.3% and 2.5-37.6%.…”

Section: Discussionsupporting

confidence: 48%

Estimating Grain Yield Based on BSW and SPAD at Grain Filling Stage in Double Rice Cropping System of China

Liu¹,

Li²,

PaoLan³

et al. 2016

IJAB

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It may be good to estimate rice yield based on root bleeding snap weight (BSW) and leaf soil plant analysis development (SPAD) at grain filling stages in southeast China. There were seven treatments: (N-butyl) thiophosphoric triamide (NBPT) applied at rates of 0.00, 0.50, 0.75, 1.00, 1.25, 1.50% with urea @ 135 kg N ha -1 and CK (no NBPT or urea). All treatments received 75 kg P2O5 ha -1 (superphosphate, P2O5 12%) and 150 kg K2O ha -1 (potassium sulfate, K2O 60%), and then all fertilizer and inhibitor were applied once as base fertilizer. At grain filling stage, both of early and late rice, root BSW and leaf SPAD readings were obtained and grain yield determined at harvesting. In addition, the relationship between BSW, SPAD and grain yield was established. The results showed that the grain yield of rice, root BSW and leaf SPAD were increased significantly in application of NBPT with urea. Compared with 0% NBPT, grain yield, BSW and SPAD in 1.00% NBPT were improved by11.9-33.0%, 7.1-74.3% and 4.6-31.7% in early rice; and increased by 8.4-33.0%, 7.9-75.0% and 4.4-19.5% in late rice. However, these decreased when NBPT was less or more than 1.00%. On the other hand, the relationship between BSW, SPAD at grain filling stage and grain yield could be fitted by two-variable linear equation (p<0.05); and which provided better of validation experiment. Therefore, the grain yield could be predicted better by BSW and SPAD at grain filling stage in double rice cropping system.

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Section: Discussionsupporting

confidence: 48%

Estimating Grain Yield Based on BSW and SPAD at Grain Filling Stage in Double Rice Cropping System of China

Liu¹,

Li²,

PaoLan³

et al. 2016

IJAB

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“…It can reduce urease activity, slow down the hydrolysis of urease decomposition, prolong urease diffusion time and decrease the concentration of ammonia present near the soil surface, and thereby improve N use efficiency and crop yield [3][4][5]. In this study, rice yield increased significantly when urea was applied with NBPT.…”

Section: Discussionmentioning

confidence: 67%

“…All these factors reduce the potential for volatilization and allow urea to move deeper into the soil under irrigation or rainfall [3,4]. In addition, if applied with urea, NBPT will increase leaf chlorophyll content, plant growth and fiber quality of cotton by improving N use efficiency and lint yield [5]. Ding et al found that NBPT increase maize yield from fluvo-aquic soil on the North China Plain.…”

Section: Introductionmentioning

confidence: 99%

Estimating the effect of urease inhibitor on rice yield based on NDVI at key growth stages

Liu¹,

Li²,

Hu³

2014

Front. Agr. Sci. Eng.

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The effect of the urease inhibitor, N-(n-butyl) thiophosphoric triamide (NBPT) at a range of application rates on rice production was examined in a field experiment at Jinxian County, Jiangxi Province, China. The normalized difference vegetation index (NDVI) was measured at key growth stages in both early and late rice. The results showed that the grain yield increased significantly when urea was applied with NBPT, with the highest yield observed at 1.00% NBPT (wt/wt). NDVI differed with the growth stage of rice; it remained steady from the heading to the filling stage. Rice yield could be predicted from the NDVI taken at key rice growing stages, with R 2 ranging from 0.34 to 0.69 in early rice and 0.49 to 0.70 in late rice. The validation test showed that RMSE (t$hm -2 ) values were 0.77 and 0.87 in early and late rice, respectively. Therefore, it was feasible to estimate rice yield for different amounts of urease inhibitor using NDVI.

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“…One of the most promising methods to reduce N 2 O emissions and decrease overall N losses is the addition of nitrification inhibitors to ammonium (NH 4 + )-based fertilisers (Linzmeier et al 2001b;Pasda et al 2001;Kawakami et al 2012). Nitrification inhibitors are antibiotics that slow the activity of the Nitrosomonas spp.…”

Section: Introductionmentioning

confidence: 99%

Comparison of grain yields and N2O emissions on Oxisol and Vertisol soils in response to fertiliser N applied as urea or urea coated with the nitrification inhibitor 3,4-dimethylpyrazole phosphate

Migliorati

Bell

Lester³

et al. 2016

Soil Res.

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Abstract. The potential for elevated nitrous oxide (N 2 O) losses is high in subtropical cereal cropping systems in northeast Australia, where the fertiliser nitrogen (N) input is one single application at or before planting. The use of urea coated with the nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP) has been reported to substantially decrease N 2 O emissions and increase crop yields in humid, high-intensity rainfall environments. However, it is still uncertain whether this product is similarly effective in contrasting soil types in the cropping region of north-east Australia. In this study the grain yield response of sorghum (Sorghum bicolor L. Moench) to rates of fertiliser N applied as urea or urea coated with DMPP were compared in crops grown on a Vertisol and an Oxisol in southern Queensland. Seasonal N 2 O emissions were monitored on selected treatments for the duration of the cropping season and the early stages of a subsequent fallow period using a fully automated high-frequency greenhouse gas measuring system. On each soil the tested treatments included an unfertilised control (0 kg N ha -1 ) and two fertilised treatments chosen on the basis of delivering at least 90% of seasonal potential grain yield (160 and 120 kg N ha -1 on the Vertisol and Oxisol respectively) or at a common (suboptimal) rate at each site (80 kg N ha -1 ). During this study DMPP had a similar impact at both sites, clearly inhibiting nitrification for up to 8 weeks after fertiliser application. Despite the relatively dry seasonal conditions during most of the monitoring period, DMPP was effective in abating N 2 O emissions on both soils and on average reduced seasonal N 2 O emissions by 60% compared with conventional urea at fertiliser N rates equivalent to those producing 90% of site maximum grain yield. The significant abatement of N 2 O emissions observed with DMPP, however, did not translate into significant yield gains or improvements in agronomic efficiencies of fertiliser N use. These results may be due to the relatively dry growing season conditions before the bulk of crop N acquisition, which limited the exposure of fertiliser N to large losses due to leaching and denitrification.

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Physiological and yield responses of field-grown cotton to application of urea with the urease inhibitor NBPT and the nitrification inhibitor DCD

Cited by 64 publications

References 48 publications

Estimating Grain Yield Based on BSW and SPAD at Grain Filling Stage in Double Rice Cropping System of China

Estimating Grain Yield Based on BSW and SPAD at Grain Filling Stage in Double Rice Cropping System of China

Estimating the effect of urease inhibitor on rice yield based on NDVI at key growth stages

Comparison of grain yields and N2O emissions on Oxisol and Vertisol soils in response to fertiliser N applied as urea or urea coated with the nitrification inhibitor 3,4-dimethylpyrazole phosphate

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