Seed quality of runner peanuts as affected by gypsum and soil calcium

Adams, J.F. and Hartzog, D.L. (1991) Seed quality of runner peanuts as affected by gypsum and soil calcium. Journal of Plant Nutrition , 14 (8). pp. 841-851.

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There is only weak evidence that supplemental soil Ca may be beneficial beyond its obvious effects on yield and sound mature kernel (SMK) of runner peanuts (Arachis hypogea L.). This study was initiated to determine the effect of applied Ca on seed Ca, seed germination, and seedling vigor on sites varying in extractable soil Ca and to determine the minimum seedCa concentration required for maximum germination and seedling vigor of runner peanuts. Eight on‐farm experiments with replicated gypsum and no‐gypsum treatments were established on soils with 130 to 625 mg/kg Melich‐1 extractable Ca. Yield and SMK were generally unaffected by the gypsum topdressing, but there were effects on seed concentrations of Ca, Mg, and K. One site showed a highly significant increase in germination and seedling vigor from the gypsum application and two other sites had a significant increase in seedling survival without a simultaneous increase in germination. The minimum seed Ca needed for maximum germination was 282 mg/kg, while the minimum needed for maximum seedling survival was 260 mg/kg. The data suggest that a higher level of available soil Ca is needed for maximum seed quality than is needed to obtain maximum yield or SMK.

Item Type: Article
Additional Information: SNNigam collections
Author Affiliation: Department of Agronomy and Soils, Auburn University, Auburn, AL 36849, USA
Subjects: Plant Production
Soil Science and Microbiology
Crop Improvement
Divisions: Groundnut
Depositing User: Mr T L Gautham
Date Deposited: 27 Sep 2013 05:26
Last Modified: 27 Sep 2013 05:26
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