Effect of Fertilizer Level Soil Moisture Regime and Seeding Date on Growth Development And Yield of Wheat
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Date
1994
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Birsa Agricultural University, Ranchi
Abstract
An experiment was conducted at the Birsa Agricultural University Parm, Ranchi during winter season of 1992-93 on sandy loam soil having 190. 25 and 205 kg ha available N. P;0; and K,0, respectively with pH 6.5 to study the effect of fertilizer, seeding date and soil moisture regime on growth, development and yield of wheat. Treatments consisted of 2 fertilizer levels (100 and 508 recommended fertilizer, 100 kG N. 50 kg P, 0 and 25 kg K,O ha), two seeding dates (November 24 and December 18) and 3 irrigation (CRI + boot, CRI+ boot + milk and CRI + maximum ti1lering + boot milk) and replicated three times in a randomized block design.
Results revealed that grain and straw yield of wheat was influenced by all the three production factors and interaction between sowing date and fertilizer. Four irrigations produced 45% higher grain yield than two irrigations (2289 kg ha). Seeding on November 24 produced 428 higher grain yield than late seeding (2345 kg has). The magnitude of yield loss was 41 kg ha day , Recommended fertilizer produced 37% higher grain yield than half dose Yield reduction of wheat under stress environment was attributed to reduced productive tillers, fertile spikelet per ear, number of grains per ear and grain weight per ear. Consumptive use and water use efficiency also increased with irrigation frequency timely seeding and recommended fertilizer. Increase in irrigation level and recommended fertilizer increased the days taken to attain various phenophases whereas, late seeding reduced it. Degree days taken to attain various phenophases followed the similar pattern for irrigation an fertilizer, however, sowing date in contrast did not influenced it. Grain yield of wheat mostly depend on consumptive use (65%), followed by fertilizer (15%) and least (28) on heat unit requirement.