|
| << vorige | volgende >> |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 159 van 183 gevonden artikelen
| Titel: |
Soil boron and soybean leaf boron in relation to soybean yield |
| Auteur: |
Woodruff, J. R. |
| Verschenen in: |
Communications in soil science and plant analysis |
| Paginering: | Jaargang 10 (1979) nr. 6 pagina's 941-952 |
| Jaar: |
1979 |
| Inhoud: |
Boron applied in 2 soybean field experiments at rates up to 2.12 kg/ha was not detectable in Ap or B2 horizon soil extracts approximately 6 weeks after B addition, although leaf B contents reflected added B. There was a measurable difference between the 2 fields in extractable B. Where the Ap horizon averaged 0.05 ppm B, soybean leaf content ranged 14 to 40 ppm B and no yield response was obtained with 0.56 to 2.24 kg/ha of added B. Where the Ap horizon averaged 0.11 ppm B, and leaf content reached 63 ppm B, soybean yield was reduced approximately two-thirds by 2.24 kg/ha of added B. Data from these 2 field experiments and previous micronutrient field studies, where yield response to B fertilization was obtained when leaf B was 9 to 10 ppm in soybean leaves, suggest that plant tissue analyses for B can be used to evaluate B fertilization needs. Soil tests may not be useful for detecting B deficiency in coarse-textured soils, but may aid in detection of areas where B levels are high. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 159 van 183 gevonden artikelen
| << vorige | volgende >> |