Growth, Yield and Nitrogen Use Efficiency of New Rice Variety under Variable Nitrogen Rates

Haque, Anamul; Haque, Moududul

doi:10.4236/ajps.2016.73054

Cited by 37 publications

(31 citation statements)

References 37 publications

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“…6). A reduction over time was also observed for NAR, which is consistent with many previous studies (Karimi and Siddique, 1991;Lima et al, 2005;Antonio et al, 2017) and is commonly attributed to selfshading and an increase in the proportion of older leaves, resulting in lower photosynthetic rates per unit leaf area (Singh et al, 2009;Haque and Haque, 2016). Consistent with thinner leaves, the LV genotype exhibited a greater LAR than the other three genotypes under greenhouse as well as field conditions.…”

Section: Discussionsupporting

confidence: 89%

Morphological Traits Underlying Differences in Early Vigor among Four Cotton Genotypes

et al. 2019

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In comparison with other annual crops, cotton (Gossypium hirsutum L.) seedlings develop slowly after emergence. More rapid seedling development can provide advantages in limiting disease, insect, and weed impacts on cotton seedlings. Information on the mechanisms determining early vigor in cotton is limited. Therefore, three genotypes previously identified to differ in seedling vigor and one commercial cultivar were selected for detailed characterization of early growth in greenhouse and field conditions. Growing environment and genotype effects were significant for many of the measured traits. Environmental conditions prevailing in field and greenhouse conditions differentially affected seedling growth, including cotyledon biomass, root weight ratio (RWR), net assimilation rate (NAR), and specific leaf area (SLA). Genotypic differences were found in one or both environments for cotyledon area, area of the first leaf, total leaf area, and leaf, stem, root, and total biomass. Leaf weight ratio (LWR), stem weight ratio (SWR), RWR, LAR, and SLA differed among genotypes at most stages, but this was not the case for relative growth rate and NAR. The high‐vigor genotype generally had longer roots, larger cotyledons, greater cotyledon, stem, and total biomass, and greater SWR and RWR than the low‐vigor genotype. The low‐vigor genotype had the greatest LAR, SLA, and LWR among the four genotypes. Results obtained in this study suggest that factors such as the efficiency of photoassimilate conversion into biomass, energy density of the biomass, root carbon exudation, and/or photosynthetic rates differ between the low‐vigor and high‐vigor genotypes.

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Section: Discussionsupporting

confidence: 89%

Morphological Traits Underlying Differences in Early Vigor among Four Cotton Genotypes

et al. 2019

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“…Global demands for food and fiber will increase up to 70% by 2050 (Singh and Trivedi, 2017). An increase of 2% -3% year -1 in rice production has to be maintained to ensure the self-sufficiency in rice, within limited arable land (Haque and Haque, 2016). Further, the use of chemical fertilizer has been rapidly increasing to meet the continuously growing demands of increased yield from the existing land.…”

Section: Introductionmentioning

confidence: 99%

“…Further, nitrogen fertilizer is costly, thus it is important to minimize the losses of nitrogen fertilizers and maximize the economic utility. Nitrogen use efficiency (NUE) of different rice cultivars such as BRRI dhan1 (Haque and Haque, 2016), BRRI dhan28, BRRI dhan36 (Alim, 2012), BRRI dhan29 (Hasan et al, 2016;Alam et al, 2010) has been studied.…”

Section: Introductionmentioning

confidence: 99%

Study of nitrogen use efficiency and yield of rice influenced by deep placement of nitrogen fertilizers

et al. 2019

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Continuous increase of nitrogen fertilizer use adversely affecting the soil health as well as the environment. It necessitates the systematic study of the impact of nitrogen (N) fertilizer use-reduction on crop yield. In this article, the effects of deep placement of nitrogen fertilizers on nitrogen use efficiency (NUE) and yield of rice variety “BRRI dhan46” were investigated and compared for three N formulations: urea super granule (USG), NPK briquettes and prilled urea (PU). The experiment was conducted in randomized complete block design (RCBD) with eight N treatments replicated three times. The treatments were applied by varying doses (0, 52, 78 and 104 kg ha-1) of nitrogen fertilizers in a known identical soil and weather condition. Applications of PU, USG and NPK briquettes exhibited significant differences on yield attributes of rice. Results revealed maximum grain yield of 6.391 t ha-1 (54% increases over control) for the dose USG 104 kg ha-1 which is statistically similar to the dose USG 78 kg ha-1 and NPK briquettes 104 kg ha-1. The deep placement of USG and NPK briquettes enhanced both the recovery of applied N and N use efficiency compared to broadcast application of prilled urea. However, USG 78 kg ha-1 showed maximum apparent N recovery, N use efficiency, gross margin and marginal benefit-cost ratio. Thus, an application of 78 kg ha-1 USG can be recommended for profitable cultivation of rice variety BRRI dhan46. SAARC J. Agri., 17(1): 93-103 (2019)

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“…Other studies reported that N application increased panicle per hill, total grain per panicle (Haque & Haque, 2016), 1000 grain weight and yield of the grain (Tabar, 2012;Tayefe, Gerayzade, Amiri, & Zade, 2014;Haque & Haque, 2016).…”

Section: Effect Of Nitrogen Fertilizermentioning

confidence: 98%

Response of Two Local Rice Cultivars to Different Doses of Nitrogen Fertilizer in Two Paddy Fields

Rusdiansyah

Saleh

2017

Agrivita.J.Agr.Sci

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The study aimed to determine the response of two local rice cultivars subjected to different doses of nitrogen (N) fertilizer in two paddy fields, namely Petung and Gunung Makmur in Penajam Paser Utara, East Kalimantan. The research was arranged in Nested Design with five doses of N fertilizers, two cultivars, and two locations as treatments. The doses of N fertilizers were 0, 25, 50, 75 and 100 kg N.ha -1 nested in two cultivars (Nanung and Pance Kuning) and two locations (Petung and Gunung Makmur). Each treatment was conducted in three replicates. The result showed that the Pance Kuning cultivar was superior than Nanung in Petung location in terms of the number of tillers per hill, number of productive tillers per hill, percentage of filled grain per panicle, weight of 1000 grains and potential yield. A different effect of N fertilizer was observed on the number of tillers per hill, percentage of filled grain per panicle and weight of 1000 grains. Nanung and Pance Kuning showed positive responses to the application of 75 kg N.ha -1 in Petung for the parameters of tiller number and weight of 1000 grains.

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Growth, Yield and Nitrogen Use Efficiency of New Rice Variety under Variable Nitrogen Rates

Cited by 37 publications

References 37 publications

Morphological Traits Underlying Differences in Early Vigor among Four Cotton Genotypes

Morphological Traits Underlying Differences in Early Vigor among Four Cotton Genotypes

Study of nitrogen use efficiency and yield of rice influenced by deep placement of nitrogen fertilizers

Response of Two Local Rice Cultivars to Different Doses of Nitrogen Fertilizer in Two Paddy Fields

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