Influence of Nitrogen Supply on Photosynthesis, Chlorophyll Content and Yield of Improved Rice Varieties under Upland Conditions in Western Kenya

Sikuku, PA; Kimani, John; Kamau, Joseph; Njinju, Symon Mugo

doi:10.9734/ajea/2016/13859

Cited by 4 publications

(4 citation statements)

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“…The highest chlorophyll content was attributed due to differences in the genetic makeup of the varieties. Similarly, varieties had a significant effect on total chlorophyll content was also reported by Sikuku et al (2016). Nutrient management had significant effect on leaf chlorophyll content at all sampling dates (Figure 3D).…”

Section: Leaf Chlorophyll Content (Spad Value)supporting

confidence: 70%

Assessing the influence of integrated nutrient management on growth performance of aromatic fine rice

Laila

Paul

Imran

et al. 2022

Arch. Agric. Environ. Sci.

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An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during July 2017 to December 2017 to study the combined effect of vermicompost with inorganic fertilizers on the growth attributes of aromatic fine rice varieties. The experiment comprised three varieties viz. BRRI dhan34, Binadhan-13 and Kalizira, and five nutrient managements viz. Control (no application of manures and fertilizer), Recommended dose of inorganic fertilizers ( i.e. 150, 95, 70, 60, 12 kg ha-1 of Urea, TSP, MOP, Gypsum and Zinc Sulphate, respectively), vermicompost @ 3 t ha-1, 25% less than recommended dose of inorganic fertilizer + vermicompost @ 1.5 t ha-1, 50 % less than recommended dose of inorganic fertilizer + vermicompost @ 3 t ha-1. The experiment was laid out in a randomized complete block design with three replications. Growth characters of aromatic fine rice were significantly influenced by variety, nutrient management and interaction of variety and nutrient management. In case of variety, the highest number of total tillers hill-1 leaf area index, total dry matter production and chlrophyll content were obtained from Binadhan-13 at all sampling dates. While, Kalizira produced the lowest number of total tillers hill-1, total dry matter, leaf area index and chlorophyll content except plant height at all sampling dates. In case of nutrient management, the tallest plant, the highest number of total tillers hill-1, total dry matter production, leaf area index and chlrophyll content were obtained from 50 % less than recommended dose of inorganic fertilizer + vermicompost @ 3 t ha-1 at all sampling dates. But the shortest plant, the lowest number of total tillers hill-1, leaf area index, total dry matter production, crop growth rate and chlorophyll content were found in control (no manures and fertilizers) at all sampling dates. In case of interaction of variety and nutrient management, the highest number of total tillers hill-1, leaf area index, total dry matter production and chlorophyll content were found in Binadhan-13 along with 50 % less than recommended dose of inorganic fertilizer + vermicompost @ 3 t ha-1 at all sampling dates. So, it can be concluded that Binadhan-13 along with 50% less than the recommended dose of inorganic fertilizers + vermicompost @ 3 t ha-1 combination might be a promising practice for aromatic fine rice cultivation.

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Section: Leaf Chlorophyll Content (Spad Value)supporting

confidence: 70%

Assessing the influence of integrated nutrient management on growth performance of aromatic fine rice

Laila

Paul

Imran

et al. 2022

Arch. Agric. Environ. Sci.

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“…The retention of crop residues in the field could have contributed to increase in soil nutrients which were further absorerd by the crop roots and hence chlorophyll increase in plant leaves. These results are in agreement with findings reported by Aminifard et al (2012) and Sikuku et al (2016).…”

Section: Effects Of Tsfs Cropping System On Physiological Responses I...supporting

confidence: 94%

Adopting a three-strata forage system for an integral food, feed outputs and agro-ecological sustenance

Dorine,

Erick,

Samuel

et al. 2023

Afr. J. Agric. Res.

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The exploitation of diverse cropping practices alongside residue incorporation has remained low among small-holder rural farming households in Sub-Saharan Africa. Three-stratum forage system (TSFS) which integrates forages for animal feeds with food crops is a significant sustainable strategy for enhancing residue incorporation. This study was conducted in Busia County in Kenya to; (i) determine the effects of TSFS on yield of diversified food crops grown (ii) to determine the effect of TSFS on growth and physiological responses in food crops grown. In TSFS system, desmodium, brachiaria grass and pigeon peas were grown in the peripheral area of the farm as forages. The treatments were laid on a randomized complete block design at two locations for 3 years (2019, 2020 and 2021), yield in t ha -1 , growth and physiological responses in plants measured. The data collected were subjected to Analysis of variance (ANOVA) in SAS software and means separated using LSD at 5% level of significance. Plant growth vigor, physiological responses and yield in t ha -1 were significantly higher in TSFS system where residues were incorporated than in no TSFS system (P<0.001). The results revealed that TSFS cropping system could be a better solution to food security and agro-ecological sustenance.

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“…Under the water restriction, delayed senescence (or stay-green) may reflect the maintenance of photosynthetic activity and capacity for light harvesting during the re-mobilization of carbon products to the harvested organs of the plant [22][23]. Maintenance of SPAD under drought stress can be considered a positive trait as it indicates the reduction of chlorophyll degradation [24].…”

Section: The Physiological Responsementioning

confidence: 99%

Influence of Watering Regimes on Physiological Traits, Growth, Yield, and Capsaicin Content of Chilies

Jinagool

Arom

2023

ASEAN Sci Tech Rept

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Water stress is a major limiting factor affecting the physiological processes, growth, and productivity of crop plants, including chili. This study evaluated chili plants' responses regarding physiological traits, growth, yield, and capsaicin content under different irrigation levels. The experimental design was a 2x4 factorial in CBD. A pot experiment was conducted on two species of chilies: Capsicum annuum ‘Super-Hot 2’ and ‘Huay-Siiton’ and C. frutescent ‘Prik-Kee-Nu-Suan.’ The plants were irrigated at four watering regimes such as 100%, 80%, 60%, and 40% of maximum water holding capacity (MWHC) after the anthesis through fruit development. Midday leaf water potential (LWPmd) was ranked between -1.30 MPa in 100% MWHC to -2.11 MPa in 40% MWHC indicating the level of water stress. The 40% MWHC caused a drastic decrease in LWPmd and reduced the maximum quantum yield of PSII (Fv/Fm) and growth rate in canopy width. Observed leaf greenness was maximized at 60% MWHC. The irrigation regimes also affected the yield of chili, especially the 60% and 40% MWHC, with a reduced number of fruits/plant, fruit fresh and dry weights, and fruit sizes. In the case of 40% MWHC, the dry yield was too low, and it was impossible to analyze the capsaicin content. The reduced irrigation (80% and 60% MWHC) did not significantly induce the capsaicin content or pungency of the studied chili cultivars. Thus the capsaicin yield of studied chili cultivars was reduced considerably by severe reduction of dry fruit yield under restricted water.

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Influence of Nitrogen Supply on Photosynthesis, Chlorophyll Content and Yield of Improved Rice Varieties under Upland Conditions in Western Kenya

Cited by 4 publications

References 0 publications

Assessing the influence of integrated nutrient management on growth performance of aromatic fine rice

Assessing the influence of integrated nutrient management on growth performance of aromatic fine rice

Adopting a three-strata forage system for an integral food, feed outputs and agro-ecological sustenance

Influence of Watering Regimes on Physiological Traits, Growth, Yield, and Capsaicin Content of Chilies

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