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Titolo:
Effects of interactions of moisture regime and nutrient addition on nodulation and carbon partitioning in two cultivars of bean (Phaseolus vulgaris L)
Autore:
Boutraa, T; Sanders, FE;
Indirizzi:
Univ Leeds, Sch Biol, Leeds LS2 9JT, W Yorkshire, England Univ Leeds Leeds W Yorkshire England LS2 9JT S2 9JT, W Yorkshire, England
Titolo Testata:
JOURNAL OF AGRONOMY AND CROP SCIENCE-ZEITSCHRIFT FUR ACKER UND PFLANZENBAU
fascicolo: 4, volume: 186, anno: 2001,
pagine: 229 - 237
SICI:
0931-2250(200106)186:4<229:EOIOMR>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOIL-MOISTURE; WATER-STRESS; BIOMASS ALLOCATION; GROWTH; SHOOT; ROOT; POTASSIUM; PHOSPHORUS; DROUGHT; FERTILIZER;
Keywords:
carbon partitioning; common bean; fertilizer; moisture regime; nodulation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Boutraa, T Univ Leeds, Sch Biol, Leeds LS2 9JT, W Yorkshire, England Univ Leeds Leeds W Yorkshire England LS2 9JT orkshire, England
Citazione:
T. Boutraa e F.E. Sanders, "Effects of interactions of moisture regime and nutrient addition on nodulation and carbon partitioning in two cultivars of bean (Phaseolus vulgaris L)", J AGRON CR, 186(4), 2001, pp. 229-237

Abstract

Major limitations of bean (Phaseolus vulgaris L.) production in and and semiarid regions are lack of moisture and low soil fertility. An experiment was conducted to determine the effects of soil moisture and N : P : K (20 : 10 : 10) fertilizer on root and shoot growth of two cultivars of bean: cv. Carioca, an indeterminate Brazilian landrace, and cv. Prince, a determinatecultivar grown in Europe. Carioca appears generally stress-tolerant while Prince is intolerant. Seedlings were grown in pots of nonsterile soil at 30, 60 or 90 % field capacity (FC), and given 0, 0.1 or 1 g (kg soil)(-1) of compound fertilizer. The soil contained a population of effective Rhizobium. Growth of both cultivars was greatest in the high moisture and high nutrient treatments. Root fractions were highest at low nutrient supply; the effect of water was not significant. Leaf fraction decreased as root fraction increased. Numbers of nodules were highest at high and intermediate moisture when no fertilizer was applied. Numbers were lowest at 30 % FC and at thehighest fertilizer rate. Masses of nodules and fractions followed the samepattern. Decreasing water regime reduced the relative growth rate (RGR) ofPrince, while Carioca maintained high RGR at unfavourable conditions of water and nutrients. Net assimilation rates (NAR) were unaffected by nutrientaddition, and reduced by low moisture regime. Water use efficiencies (WUEs) were reduced by water stress but increased by nutrient deficiency. The water utilization for dry matter production was optimal at 60 % FC.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/07/20 alle ore 13:19:07