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Titolo:
Phosphorus deficiency diagnosis and fertilization in mungbean grown in rainfed calcareous soils of Pakistan
Autore:
Rashid, A; Din, J; Bashir, M;
Indirizzi:
Natl Agr Res Ctr, Land Resource Res Inst, Islamabad 45500, Pakistan Natl Agr Res Ctr Islamabad Pakistan 45500 nst, Islamabad 45500, Pakistan Natl Agr Res Ctr, Food Legume Program, Islamabad 45500, Pakistan Natl Agr Res Ctr Islamabad Pakistan 45500 ram, Islamabad 45500, Pakistan
Titolo Testata:
COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS
fascicolo: 13-14, volume: 30, anno: 1999,
pagine: 2045 - 2056
SICI:
0010-3624(1999)30:13-14<2045:PDDAFI>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
AVAILABILITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Rashid, A Natl Agr Res Ctr, Land Resource Res Inst, Islamabad 45500, Pakistan Natl Agr Res Ctr Islamabad Pakistan 45500 abad 45500, Pakistan
Citazione:
A. Rashid et al., "Phosphorus deficiency diagnosis and fertilization in mungbean grown in rainfed calcareous soils of Pakistan", COMM SOIL S, 30(13-14), 1999, pp. 2045-2056

Abstract

Mungbean [Vigna radiata (L). Wilczek] grown in rainfed calcareous soils suffers with phosphorus (P) deficiency. In view of high cost and low use efficiency of P fertilizer, greenhouse, incubation, and field experiments were carried out for determining P deficiency diagnostic criteria and efficient method of P fertilizer application in mungbean. In a pot culture experimentusing a P-deficient Typic Ustocherpt, maximum increase in grain yield withP was 686% over the control; and fertilizer requirement for near-maximum (95%) grain yield was 30 mg P kg(-1) soil where fertilizer was mixed with the whole soil volume (broadcast) acid 14 mg P kg(-1) where mixed with 1/4th soil volume (band placement). In a field experiment on a P-deficient Typic Camborthid, however, maximum increase in grain yield was 262% over the control. Band placement resulted in 73% fertilizer saving as P requirement was 66 kg ha(-1) by broadcast and only 18 kg ha(-1) by band placement. CriticalP concentration range appears to be 0.27-0.33% in young whole shoots (lessthan or equal to 30 cm tall) and 0.25-0.30% in recently matured leaves. Inan incubation study using the same Typic Ustochrept, P extracted by the sodium bicarbonate (NaHCO3), the ammonium bicarbonate-diethlylenetriaminepentaacetic acid (AB)-DTPA), and the Mehlich 3 soil tests correlated closely with each other, P concentration of whole shoots, and total P uptake by mungbean plants. Critical soil test P levels for pot grown mungbean were NaHCO3,9 mg kg(-1); AB-DTPA, 7 mg kg(-1); and Mehlich 3, 23 mg dm(-3) soil. The more efficient and economical 'universal' soil test, AB-DTPA, is recommendedfor P fertility evaluation of calcareous soils.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/03/20 alle ore 19:44:03