White Lupin Growth, Yield, and Yield Components in Eastern Canada: Influence of Management Factors

The risk of drought is high in the Sudan savannah zone of West and Central Africa because rainfall in this area is unpredictable in quantity and distribution. Thus, improved maize genotypes tolerant to drought could stabilize maize grain yield in this zone, where recurrent drought threatens grain production. Six maize genotypes, two each of hybrids, open-pollinated varieties (OPVs) and landraces, were evaluated for tolerance to terminal water deficit before flowering. Water deficit significantly reduced growth, grain yield and yield components of the maize genotypes. Significant differences were observed among genotypes for all the traits measured. One hybrid, 9011-30, and two improved OPVs, STR-EV-IWD and IYFD-C0, that showed tolerance to water stress recorded higher grain yield, and accumulated and partitioned more assimilates to the grain than the drought-susceptible genotypes. Also the drought-tolerant genotypes, 9011-30, STR-EV-IWD and IYFD-C0 had more ears/plant and greater numbers of kernels/ear. These genotypes could serve as sources of drought tolerance for the development and improvement of new drought-tolerant maize genotypes.

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Growth, Yield, and Yield Components of Safflower as Affected by Irrigation Regimes

Agronomy Journal ◽

10.2134/agronj1969.00021962006100010037x ◽

1969 ◽

Vol 61 (1) ◽

pp. 111-113 ◽

Cited By ~ 5

Author(s):

Leonard J. Erie ◽

Orrin F. French

Keyword(s):

Yield Components ◽

Growth Yield ◽

Irrigation Regimes ◽

Yield And Yield Components

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Effect of root pruning and irrigation regimes on pear tree: growth, yield and yield components

Horticultural Science ◽

10.17221/170/2013-hortsci ◽

2014 ◽

Vol 41 (No. 1) ◽

pp. 34-43 ◽

Cited By ~ 6

Author(s):

Y. Wang ◽

S. Travers ◽

M.G. Bertelsen ◽

K. Thorup-Kristensen ◽

K.K. Petersen ◽

...

Keyword(s):

Yield Components ◽

Growth Yield ◽

Fruit Yield ◽

Root Pruning ◽

Supplemental Irrigation ◽

Promising Alternative ◽

Yield And Yield Components ◽

Pear Orchard ◽

Negative Effect ◽

Control Tree

The effect of root pruning (RP) as compared with non-root pruning (NP) and the potential of supplemental irrigation in alleviating the negative effect of root pruning on fruit growth, yield and yield components were investigated in a pear orchard from 2010 to 2011. Results showed that the total shoot length and the number of shoots per tree decreased by 72% and 43%, respectively, in the RP compared to the NP trees; however lateral root growth was stimulated by the RP treatment in the upper soil layers (30–40 cm). Full irrigation and deficit irrigation treatments stabilized the return bloom and improved fruit yield and size compared with the non-irrigated treatment without stimulating vegetative growth. Conclusively, the results indicate that root pruning is an effective practice controlling excessive shoot growth, and supplemental irrigation can improve fruit yield and quality in the root pruned trees. Therefore, a combination of root pruning and irrigation could be a promising alternative to control tree size and secure a stable fruit yield in pear orchards.  

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Response of irrigated sunflower (Helianthus annuus L.) hybrids to nitrogen fertilization: growth, yield and yield components

Plant Soil and Environment ◽

10.17221/4023-pse ◽

2011 ◽

Vol 50 (No. 5) ◽

pp. 205-211 ◽

Cited By ~ 18

Author(s):

H. Özer ◽

T. Polat ◽

E. Öztürk

Keyword(s):

Helianthus Annuus ◽

Nitrogen Fertilization ◽

Yield Components ◽

Growth Yield ◽

N Fertilization ◽

Yield Response ◽

Sufficient Information ◽

Helianthus Annuus L ◽

Application Rates ◽

Yield And Yield Components

N fertilization has a substantial influence on sunflower (Helianthus annuus L.) seed yield and quality. It was also well established that high-yielding sunflower hybrids had more N requirement than old cultivars such as open-pollinated ones. However, in Turkey, no sufficient information regarding the response of new developed oilseed sunflower hybrids to nitrogen fertilization under irrigated conditions. Therefore, a 2-year study was conducted to determine the effects of nitrogen application rates on the growth, yield, and yield components of two oilseed sunflower hybrids (AS-508 and Super 25) under irrigated conditions. In this study, all plant parameters were significantly influenced by applied nitrogen fertilizer rates. Yield response to nitrogen rates was positive and linear. Our research data indicated that under irrigated conditions N rate of 120 kg/ha was adequate for sunflower production in this region.

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