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How Planting Date Affects Yield of Sunflower

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Title: How Planting Date Affects Yield of Sunflower
Author: Olson, H.M.; Schatz, G.; Gardner, J.C.
Description: The addition of the sunflower into crop rotation in North Dakota has been quite successful. The sunflower has provided North Dakota with a dependable, full season dryland row crop that's capable of relatively stable yield form one year to the next. The adaption of the sunflower to the cool and short growing season is unique to the state. The short growing season 'window' for planting is from May to late June. The yields components of sunflower, heads per acre, seeds per head and weight per seed are all determined during different periods of growth. The prevailing environmental growing conditions during these growth stages thus determine yields. The components of yield are given - their stages. Knowledge of sunflower yield components, the climatic data and crop development must be viewed together to understand how planting date affects yield. Moisture is the most limiting factor in yield in the Northern Plains. Each growing season is unique. However, long term climatic norms have been established for most North Dakota locations and can be utilized when planning for planting dates. Maximum yields will usually be received from the middle of the planting window.
Date: 1986
Subject: Sunflower
Sowing
Crop production
Permalink: http://hdl.handle.net/10365/8080

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