Response of Corn Hybrids (Zea Mays L.) to Rate and Date of Planting PDF Download
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Author: William David Luebbe
Publisher:
ISBN:
Category :
Languages : en
Pages : 176
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Book Description
Author: William David Luebbe
Publisher:
ISBN:
Category :
Languages : en
Pages : 176
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Book Description
Author: Ali M. Al-Darby
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 198
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Book Description
Author: Noel Winston Kirton
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 160
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Book Description
Author: Julius Alani B. Oyedokun
Publisher:
ISBN:
Category : Grain
Languages : en
Pages : 162
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Book Description
Author: David Mfinzi Noah Mbewe
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 176
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Book Description
Author: William Duane Butler
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 56
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Book Description
Author: Cyril Reed Funk
Publisher:
ISBN:
Category :
Languages : en
Pages : 262
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Author: Sultan Hussein Begna
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 182
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Book Description
"The yield of short-season hybrids is lower than long-season hybrids, mainly as a result of the low final leaf area developed by the short-season plants. This is due to the smaller plant stature and smaller leaf number and size of short-season adapted hybrids. In addition, in short-season areas the thermal-time available may be insufficient to mature grain of current maize hybrids. Maize hybrids which accumulate leaf area quickly, mature earlier, yield well and tolerate higher population densities better than the currently available hybrids would be more suitable for production in short-season areas. The "Leafy reduced-stature" maize hybrids, which have only recently been developed, have traits which address these criteria. There has been no previous effort to evaluate the effects of more than two plant population densities or the effects of planting patterns on the yield, yield components and vegetative growth of these hybrids. in 1995, field experiments were conducted at two sites near Montreal to compare the response of leafy reduced-stature (LRS), non-leafy normal stature (NLNS), and non-leafy reduced-stature (NLRS) maize hybrids to plant population densities and planting patterns. LRS maize hybrids showed the most rapid growth of the first ear, and the highest yield per single plant and per hectare at high plant population densities in paired rows. LRS hybrids also had longer grain filling periods, lower grain moisture contents and higher harvest indices than conventional (NLNS) hybrids. Rapid growth of the first ear and a higher harvest index are indications that LRS hybrids should be more tolerant of higher population densities than currently available hybrids. Therefore, LRS hybrids show promise for production in short-season areas at high plant population densities where maize cultivation is not currently economical due to shortness of the growing-season." --
Author: Calvin Robert Shumway
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 208
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Book Description
Author: M. Bänzinger
Publisher: CIMMYT
ISBN: 9706480463
Category :
Languages : en
Pages : 69
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Book Description
Introduction - why breed for drought and low N tolerance?; Conceptual framework - breeding; Conventional approaches to improving the drought and low N tolerance of maize; Conventional approaches challenged; The challenge of breeding for drought and low N tolerance; Maize under drought and low N stress; Conceptual framework - physiology; Water and the maize plant; Nitrogen and the maize plant; Maize under drought and low N stress - consequences for breeding; Stress management; Drought; Low N stress; Statistical designs and layout of experiments; Increasing the number of replicates; Improved statistical designs; Field layout; Border effects from alleys; Secondary traits; Why use secondary traits?; How do we decide on the value of secondary traits in a drought or low N breeding program?; Secondary traits that help to identify drought tolerance; Secondary traits that help to identify low N tolerance: Selection indices - Combining information on secondary traits with grain yield; Combining information from various experiments; Breeding strategies; Choice of germplasm; Breeding schemes; Biotechnology: potential and constraints for improving drought and low N tolerance; The role of the farmer in selection; What is farmer participatory research and why is it important?; What is new about farmer participatory research?; Participatory methodologies.
