Author: Andrew J. Tesha
Publisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 258
Book Description
The Effect of Nitrogen Fertilizaton on Drought Resistance in Sweet Corn Plants (Zea Mays L. Cv Iochief)
Author: Andrew J. Tesha
Publisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 258
Book Description
Publisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 258
Book Description
Nitrogen Nutrition and Susceptibility of Sweet Corn (Zea Mays L. Var. Rugosa) to Drought
Author: Jean Pierre Mvondo Awono
Publisher:
ISBN:
Category :
Languages : en
Pages : 242
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 242
Book Description
Dissertation Abstracts International
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 572
Book Description
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 572
Book Description
Breeding for drought and nitrogen stress tolerance in maize: From theory to practice
Author: M. Bänzinger
Publisher: CIMMYT
ISBN: 9706480463
Category :
Languages : en
Pages : 69
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.
Publisher: CIMMYT
ISBN: 9706480463
Category :
Languages : en
Pages : 69
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.
Effects of Tillage, Nitrogen Fertilization, and Surface Mulch on Corn (Zea Mays L.) Yield
The Effect of Time of Nitrogen Application on the Yield
Author: Patrick Bioma Kiadii
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 144
Book Description
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 144
Book Description
Factors Affecting Emergence of Sweet Corn (Zea Mays L., Cv. Florida Stay Sweet) Planted with Pop-up Fertilizers Containing Both Nitrogen and Phosphorus
Author: John Michael Gier
Publisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 118
Book Description
Publisher:
ISBN:
Category : Nitrogen fertilizers
Languages : en
Pages : 118
Book Description
American Doctoral Dissertations
Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 604
Book Description
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 604
Book Description
The Effects of Planting Date, Nitrogen and Boron Application on Mineral Element Concentration, Yield, Dry Weight and Fresh Weight of Sweet Corn
Author: Jonathan Anthony Sisson
Publisher:
ISBN:
Category : Sweet corn
Languages : en
Pages : 116
Book Description
The effects of planting date on mineral element concentration in sweet corn (Zea mays L. cv. Jubilee) at six developmental stages and on yield were investigated. Planting dates were chosen to correspond to early, mid-season, and late commercial plantings. Two nitrogen rates were applied since nitrogen is more often limiting than any other nutrient for sweet corn grown in Western Oregon. Boron was also applied since it has been shown to be limiting in many other crops grown in the Willamette Valley. Planting date significantly affected N, P, K, Ca, Mg, Mn, Fe, Cu, B, and Zn concentration in the whole plants during the vegetative growth stages and in the ear leaves during the stages between tasseling and harvest. During the early stage of growth, N, P, K, Ca, Mg, B, and Zn tended to be higher in the early planted corn plants, while later in the development of corn the effects of planting date were more variable. Planting date also affected the fresh and dry weight of whole plants; the later planting produced more dry weight than the earlier two plantings, while the early planted corn produced more fresh weight at harvest than the later two plantings. Consequently, when analyzing sweet corn for nutritional status, date of planting should be considered when interpreting the plant analysis data. The application of B had no effect on yield, fresh weight or dry weight and only increased B concentration at the first developmental stage. The additional application of N, did not significantly increase yield for the late planted corn, but did for early planted corn. N concentration, as well as Mg, Mn, Cu, and Zn concentrations increased with the higher rate of N fertilizer applied (125 kg/ha). Fresh weight and dry weight were both higher in the plants receiving the higher rate of N, with the difference becoming greater as the plants matured.
Publisher:
ISBN:
Category : Sweet corn
Languages : en
Pages : 116
Book Description
The effects of planting date on mineral element concentration in sweet corn (Zea mays L. cv. Jubilee) at six developmental stages and on yield were investigated. Planting dates were chosen to correspond to early, mid-season, and late commercial plantings. Two nitrogen rates were applied since nitrogen is more often limiting than any other nutrient for sweet corn grown in Western Oregon. Boron was also applied since it has been shown to be limiting in many other crops grown in the Willamette Valley. Planting date significantly affected N, P, K, Ca, Mg, Mn, Fe, Cu, B, and Zn concentration in the whole plants during the vegetative growth stages and in the ear leaves during the stages between tasseling and harvest. During the early stage of growth, N, P, K, Ca, Mg, B, and Zn tended to be higher in the early planted corn plants, while later in the development of corn the effects of planting date were more variable. Planting date also affected the fresh and dry weight of whole plants; the later planting produced more dry weight than the earlier two plantings, while the early planted corn produced more fresh weight at harvest than the later two plantings. Consequently, when analyzing sweet corn for nutritional status, date of planting should be considered when interpreting the plant analysis data. The application of B had no effect on yield, fresh weight or dry weight and only increased B concentration at the first developmental stage. The additional application of N, did not significantly increase yield for the late planted corn, but did for early planted corn. N concentration, as well as Mg, Mn, Cu, and Zn concentrations increased with the higher rate of N fertilizer applied (125 kg/ha). Fresh weight and dry weight were both higher in the plants receiving the higher rate of N, with the difference becoming greater as the plants matured.