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- W2757937771 abstract "The farmers of rainfed areas get low yields as rich as compared to the ones from the irrigated land, due to several natural constraints among which water availability is the major one. It is considered reasonable that yield forecast should be made as early as possible before harvesting. For rainfed areas yield assessment (of wheat crop) can be made based on Tillering to reproductive stage in late February or early March. Although the growth of any crop is not only dependant on weather parameters yet they have a great impact on final yield produced. This study revealed that at a particular time some meteorological parameters act as the main actor for the physical growth of wheat crop and the final yield in the end. During the 1st & 2nd decade of January, the moderate amount of rainfall (up to 40 mm) is favourable for a better yield. Heavy rains at this stage may have adverse effects on the final yield. Throughout the wheat grown season, if rainfall exceeds 120 mm then the final yield obtained may be good or above average. Reproductive stage (heading to grain formation) is the most critical period in the life cycle of wheat crop. A slight shortfall or excess of water produces drastic changes in the economic yield of the crop. Heat units during the early age and particularly at the beginning of reproductive stage should be equal to or slightly above than the normal to get optimum yield. Mean minimum temperature should be higher during first two decades of January and lower in the 2nd decade of February to harvest good economic yield. Higher than normal temperatures in February shorten the period for reproduction. Less number of grains per spike, smaller size and weight of grain are the outcome. During the 3rd decade of January & 1st decade of March higher duration of bright sunshine is favourable for a better yield." @default.
- W2757937771 created "2017-10-06" @default.
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- W2757937771 date "2009-01-01" @default.
- W2757937771 modified "2023-09-25" @default.
- W2757937771 title "Early Yield Assessment of Wheat on Meteorological Basis for Potohar Region" @default.
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