Seasonal Influence on Phenology and Accumulated Heat Units in Relation to Yield of Baby Corn

Thavapraka, N.; Jagannatha, R.; Velayudham, K.; ., L. Gurusamy

doi:10.3923/ijar.2007.826.831

Cited by 10 publications

(8 citation statements)

References 4 publications

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“…This weather phenomenon accelerated the physio-chemical process of crops, so enhanced their growth and development. This was in line with the findings of Thavaprakaash et al (2007), who noted that the baby corn crop attained phenophases early during the summer season and delayed during the late rabi season in Coimbatore, Tamilnadu. They also reported that the increasing temperature significantly lowered the time to 50% flowering and total crop duration.…”

Section: Baby Corn Phenophases Durationsupporting

confidence: 92%

Evaluating the seasonal accumulation of Heat units as an agroclimatic indicator on Baby corn (Zea mays L.) under different sowing windows

Sankar

Ramanathan

Kokilavani

et al. 2023

JANS

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Temperature determines the plant's growth and development, which decides the onset of different phenophasic stages of the Baby corn. This study aimed to evaluate the phenological behaviour and yield of Baby corn (Zea mays L.) influenced by sowing windows and heat units with the field investigations carried out during winter (January – April) and kharif (June – September) 2022 at Eastern Block Farm of Tamil Nadu Agricultural University, Coimbatore. Growing Degree Days (GDD), Photo Thermal Units (PTU), Helio Thermal Units (HTU), Relative Temperature Disparity (RTD), Heat Unit Efficiency (HUE) and seasonal efficiency were calculated at different phenological stages. The results revealed that early attainment of phenophases was noticed during winter (62.5 days - January 21st to 27th April) than kharif (77.1 days – 15th June to 4th October). Among seasons, higher accumulation of GDD (1553) and PTU (19099) was observed during kharif 2022, whereas maximum accumulation of HTU (9923) and RTD (2146) was observed in winter 2022. Seasonal efficiency was higher during kharif (118) than during the winter season (81). The sowing windows significantly influenced the higher accumulation of heat units and yield attributes. Hence, higher yield (11922.7 kg ha-1) and HUE (7.3) were obtained during kharif than in winter 2022 (yield – 7849 kg ha-1 and HUE – 5.8). Weather parameters showed a negative correlation except RH-I, WS, SR and HUE during winter 2022 (R2=0.802) and RH-II, WS, RF, Daylength, HUE during kharif 2022, which had a positive correlation (R2=0.795). Baby corn is highly sensitive to increasing temperature. Hence, the study expresses the effect of varying ambient temperature on the duration between the phenological stages and yield.

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Section: Baby Corn Phenophases Durationsupporting

confidence: 92%

Evaluating the seasonal accumulation of Heat units as an agroclimatic indicator on Baby corn (Zea mays L.) under different sowing windows

Sankar

Ramanathan

Kokilavani

et al. 2023

JANS

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“…The prevalence of higher temperature, solar radiation and longer day length during the summer season has provided an improved crop growth resulting in earlier tasseling and silking, while in Rabi due to lower temperature, solar radiation and shorter day length delayed the tasseling and silking process. The results were substantiated by Thavaprakaash et al (2007), who observed in the study that higher amount of solar radiation and daily mean temperature during summer months might have encouraged the early attainment of phenophases of baby corn which supports the results of the present study.…”

Section: Days Taken For Different Phenophasessupporting

confidence: 90%

“…The efficiency values of the Kharif and Rabi seasons were higher than 100, which shows that these seasons are more suitable for growing maize than the late rabi and summer seasons. This was similar to the outcomes of Thavaprakaash et al (2007), who reported that the seasonal efficiency was higher than 100 in Kharif, Rabi and summer seasons while it was less than 100 in late rabi season, which expressed the nonsuitability of the season.…”

Section: Seasonal Efficiencysupporting

confidence: 88%

Influence of Agro Meteorological Indices on Different Sowing Time of Irrigated Maize in Western Agro-Climatic Zone of Tamil Nadu

Sowmiya¹,

Krishnan²,

Karthikeyan³

et al. 2022

MAJ

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A field trial with different sowing windows of the maize crop was done in the Eastern Block Farm of Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India. The sowing windows were scheduled mid of every month for four seasons. The treatments were Kharif (2019) – June 15th, July 15th, and August 15th; Rabi (2019-2020) – September 15th, October 15th, and November 15th; Late Rabi (2020-2021) – December 15th, January 15th, February 15th, and Summer (2021) – March 15th, April 15th, and May 15th. The agrometeorological indices viz., growing degree days (GDD), helio thermal unit (HTU), photo thermal unit (PTU), relative temperature disparity (RTD) and seasonal efficiency were worked out to find the suitable maize cropping period for maximum yield in this changing climatic scenario. Of the four seasons taken for study, Kharif and Rabi seasons were more suitable for maize cultivation and provided better yield than other seasons in the western agroclimatic zone of Tamil Nadu.

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“…The basic agro-climatic indices, that is growing degree days (GDD), sum of active temperatures (SAT), Crop Heat Units (CHUs) and HTI (Selyaninov’s Hydrothermal Coefficient), were used to describe hydrothermal conditions affecting plant growth (Garcia-Mozo et al 2000 ; Thavaprakaash et al 2007 ; OMAFRA 2009 ). The CHU and HTI indices were considered to be the best to characterise thermal and humidity conditions prevailing in the growing period preceding the pollen season.…”

Section: Methodsmentioning

confidence: 99%

Types of Artemisia pollen season depending on the weather conditions in Wrocław (Poland), 2002–2011

et al. 2013

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The aim of the study was to characterise Artemisia pollen season types according to weather conditions in Wrocław (south-western Poland) in the years 2002–2011. Over the period analysed, the start date of the pollen season (determined by the 95 % method) ranged from 10 July 2002 to 28 July 2010. The start date of the pollen season can be determined by using Crop Heat Units (CHUs). During the period 2002–2011, the Artemisia pollen season started after the cumulative value of CHUs had reached 2,000–2,100 °C. The three distinguished types of Artemisia pollen season are best described by the frequency of weather types defined by the type of circulation, mean daily air temperature, and the occurrence of rain. The variation in these factors affected the dynamics of the pollen season. The noteworthy frequency of days with rain and high seasonal sum of precipitation totals as well as the dominance of cyclonic weather from the westerly direction had an impact on the extension of the pollen season. The meteorological factors that directly affect pollen release and transport primarily include air humidity, expressed as vapour pressure (r > 0.3, p < 0.01), temperature(r from 0.2 to 0.4, p < 0.01). The relationships between averaged meteorological data and daily pollen concentration were stronger (r > 0.5, p < 0.01). Based on the correlation analysis, the meteorological variables were selected and regression equations were established using stepwise backward regression analysis.

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Seasonal Influence on Phenology and Accumulated Heat Units in Relation to Yield of Baby Corn

Cited by 10 publications

References 4 publications

Evaluating the seasonal accumulation of Heat units as an agroclimatic indicator on Baby corn (Zea mays L.) under different sowing windows

Evaluating the seasonal accumulation of Heat units as an agroclimatic indicator on Baby corn (Zea mays L.) under different sowing windows

Influence of Agro Meteorological Indices on Different Sowing Time of Irrigated Maize in Western Agro-Climatic Zone of Tamil Nadu

Types of Artemisia pollen season depending on the weather conditions in Wrocław (Poland), 2002–2011

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