Relation between soil temperature and biophysical parameters in Indian mustard seeds

• Autorzy: Adak T. , Chakravarty N. V. K.
• Języki publikacji: EN

Abstrakty

EN

Temporal changes in surface soil temperature were studied in winter crop. Significant changes in bare and cropped soil temperature were revealed. Air temperature showed a statistically positive and strong relationship (R2 = 0.79** to 0.92**) with the soil temperature both at morning and afternoon hours. Linear regression analysis indicated that each unit increase in ambient temperature would lead to increase in minimum and maximum soil temperatures by 1.04 and 1.02 degree, respectively. Statistically positive correlation was revealed among biophysical variables with the cumulative surface soil temperature. Linear and non-linear regression analysis indicated 62-69, 72-86 and 72-80% variation in Leaf area index, dry matter production and heat use efficiency in Indian mustard crop as a function of soil degree days. Below 60% variation in yield in Indian mustard was revealed as a function of soil temperature. In contrast, non-significant relationship between oil content and soil temperature was found, which suggests that oil accumulation in oilseed crops was not affected significantly by the soil temperature as an independent variable.

• Wydawca: -
• Czasopismo: International Agrophysics
• Rocznik: 2013
• Tom: 27
• Numer: 4
• Opis fizyczny: p.359-367,fig.,ref.

Twórcy

autor

Adak T.

• Division of Crop Production, CISH, Rehmankhera, Lucknow, Uttar Pradesh, India

autor

Chakravarty N. V. K.

• Division of Agricultural Physics, Indian Agricultural Research Institute, New Delhi,India

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