L.) növekedésének és növekedési jellemzőinek dinamikájára eltérő évjáratokban. (Dynamics of growth and growth characteristics in different years as affected by N fertilization in maize (
Authors:A. Megyes, J. Nagy, T. Rátonyi and L. Huzsvai
évjáratokban. (Evaluating the effect of fertilization on the yield of maize (ZeamaysL.) in different years.) Növénytermelés , 44 , 493-506.
A műtrágyázás hatásának értékelése a kukorica (Zea mays L.) termésére eltérő évjáratokban
Berzsenyi, Z. (1996): A N-műtrágyázás hatásának vizsgálata a kukorica (
L.) növekedésére Hunt-Parsons modellel. [Studies on the effect of N fertilisation on maize (
ZeamaysL.) growth using the
In the tropics, maize (
L.) is often grown under low N conditions. Information on the respective role of N uptake and partitioning at anthesis in determining grain yield under low N is scarce. Senescence traits have been proposed as secondary traits to select for low N tolerance, but the stability of their association with yield under different environmental conditions has been rarely described. In the present study we analyzed the associations between grain yield, N uptake and partitioning at anthesis, dry matter matter partitioning, and senescence traits during two seaons in QPM (quality protein maize) hybrids. Association between grain yield and N uptake at anthesis, when found, was mainly explained by a close relationship between grain yield and above-ground biomass. No relationship was found between grain yield and N partitioning at anthesis. In both seasons grain yield was significantly positively associated with ear to above-ground biomass and ear to tassel weight ratios. The magnitude of the correlation between grain yield and senescence traits highly depended on climatic conditions.